[llvm] r325128 - [X86] Reduce Store Forward Block issues in HW - Recommit after fixing Bug 36346

Lama Saba via llvm-commits llvm-commits at lists.llvm.org
Wed Feb 14 06:58:53 PST 2018


Author: lsaba
Date: Wed Feb 14 06:58:53 2018
New Revision: 325128

URL: http://llvm.org/viewvc/llvm-project?rev=325128&view=rev
Log:
[X86] Reduce Store Forward Block issues in HW - Recommit after fixing Bug 36346

If a load follows a store and reloads data that the store has written to memory, Intel microarchitectures can in many cases forward the data directly from the store to the load, This "store forwarding" saves cycles by enabling the load to directly obtain the data instead of accessing the data from cache or memory.
A "store forward block" occurs in cases that a store cannot be forwarded to the load. The most typical case of store forward block on Intel Core microarchiticutre that a small store cannot be forwarded to a large load.
The estimated penalty for a store forward block is ~13 cycles.

This pass tries to recognize and handle cases where "store forward block" is created by the compiler when lowering memcpy calls to a sequence
of a load and a store.

The pass currently only handles cases where memcpy is lowered to XMM/YMM registers, it tries to break the memcpy into smaller copies.
breaking the memcpy should be possible since there is no atomicity guarantee for loads and stores to XMM/YMM.

Change-Id: Ic41aa9ade6512e0478db66e07e2fde41b4fb35f9

Added:
    llvm/trunk/lib/Target/X86/X86FixupSFB.cpp
    llvm/trunk/test/CodeGen/X86/fixup-sfb-32.ll
    llvm/trunk/test/CodeGen/X86/fixup-sfb.ll
Modified:
    llvm/trunk/lib/Target/X86/CMakeLists.txt
    llvm/trunk/lib/Target/X86/X86.h
    llvm/trunk/lib/Target/X86/X86TargetMachine.cpp

Modified: llvm/trunk/lib/Target/X86/CMakeLists.txt
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/CMakeLists.txt?rev=325128&r1=325127&r2=325128&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/CMakeLists.txt (original)
+++ llvm/trunk/lib/Target/X86/CMakeLists.txt Wed Feb 14 06:58:53 2018
@@ -31,6 +31,7 @@ set(sources
   X86FastISel.cpp
   X86FixupBWInsts.cpp
   X86FixupLEAs.cpp
+  X86FixupSFB.cpp
   X86FixupSetCC.cpp
   X86FloatingPoint.cpp
   X86FrameLowering.cpp

Modified: llvm/trunk/lib/Target/X86/X86.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86.h?rev=325128&r1=325127&r2=325128&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86.h (original)
+++ llvm/trunk/lib/Target/X86/X86.h Wed Feb 14 06:58:53 2018
@@ -70,6 +70,9 @@ FunctionPass *createX86OptimizeLEAs();
 /// Return a pass that transforms setcc + movzx pairs into xor + setcc.
 FunctionPass *createX86FixupSetCC();
 
+/// Return a pass that avoids creating store forward block issues in the hardware.
+FunctionPass *createX86FixupSFB();
+
 /// Return a pass that expands WinAlloca pseudo-instructions.
 FunctionPass *createX86WinAllocaExpander();
 

Added: llvm/trunk/lib/Target/X86/X86FixupSFB.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86FixupSFB.cpp?rev=325128&view=auto
==============================================================================
--- llvm/trunk/lib/Target/X86/X86FixupSFB.cpp (added)
+++ llvm/trunk/lib/Target/X86/X86FixupSFB.cpp Wed Feb 14 06:58:53 2018
@@ -0,0 +1,580 @@
+//===- X86FixupSFB.cpp - Avoid HW Store Forward Block issues -----------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// If a load follows a store and reloads data that the store has written to
+// memory, Intel microarchitectures can in many cases forward the data directly
+// from the store to the load, This "store forwarding" saves cycles by enabling
+// the load to directly obtain the data instead of accessing the data from
+// cache or memory.
+// A "store forward block" occurs in cases that a store cannot be forwarded to
+// the load. The most typical case of store forward block on Intel Core
+// microarchitecture that a small store cannot be forwarded to a large load.
+// The estimated penalty for a store forward block is ~13 cycles.
+//
+// This pass tries to recognize and handle cases where "store forward block"
+// is created by the compiler when lowering memcpy calls to a sequence
+// of a load and a store.
+//
+// The pass currently only handles cases where memcpy is lowered to
+// XMM/YMM registers, it tries to break the memcpy into smaller copies.
+// breaking the memcpy should be possible since there is no atomicity
+// guarantee for loads and stores to XMM/YMM.
+//
+// It could be better for performance to solve the problem by loading
+// to XMM/YMM then inserting the partial store before storing back from XMM/YMM
+// to memory, but this will result in a more conservative optimization since it
+// requires we prove that all memory accesses between the blocking store and the
+// load must alias/don't alias before we can move the store, whereas the
+// transformation done here is correct regardless to other memory accesses.
+//===----------------------------------------------------------------------===//
+
+#include "X86InstrInfo.h"
+#include "X86Subtarget.h"
+#include "llvm/CodeGen/MachineBasicBlock.h"
+#include "llvm/CodeGen/MachineFunction.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/CodeGen/MachineInstrBuilder.h"
+#include "llvm/CodeGen/MachineOperand.h"
+#include "llvm/CodeGen/MachineRegisterInfo.h"
+#include "llvm/IR/DebugInfoMetadata.h"
+#include "llvm/IR/DebugLoc.h"
+#include "llvm/IR/Function.h"
+#include "llvm/MC/MCInstrDesc.h"
+
+using namespace llvm;
+
+#define DEBUG_TYPE "x86-fixup-SFB"
+
+static cl::opt<bool> DisableX86FixupSFB("disable-fixup-SFB", cl::Hidden,
+                                        cl::desc("X86: Disable SFB fixup."),
+                                        cl::init(false));
+namespace {
+
+class FixupSFBPass : public MachineFunctionPass {
+public:
+  FixupSFBPass() : MachineFunctionPass(ID) {}
+
+  StringRef getPassName() const override {
+    return "X86 Fixup Store Forward Block";
+  }
+
+  bool runOnMachineFunction(MachineFunction &MF) override;
+
+private:
+  MachineRegisterInfo *MRI;
+  const X86InstrInfo *TII;
+  const X86RegisterInfo *TRI;
+  SmallVector<std::pair<MachineInstr *, MachineInstr *>, 2> BlockedLoadsStores;
+  SmallVector<MachineInstr *, 2> ForRemoval;
+  bool Is64Bit;
+
+  /// \brief Returns couples of Load then Store to memory which look
+  ///  like a memcpy.
+  void findPotentiallylBlockedCopies(MachineFunction &MF);
+  /// \brief Break the memcpy's load and store into smaller copies
+  /// such that each memory load that was blocked by a smaller store
+  /// would now be copied separately.
+  void
+  breakBlockedCopies(MachineInstr *LoadInst, MachineInstr *StoreInst,
+                     const std::map<int64_t, unsigned> &BlockingStoresDisp);
+  /// \brief Break a copy of size Size to smaller copies.
+  void buildCopies(int Size, MachineInstr *LoadInst, int64_t LdDispImm,
+                   MachineInstr *StoreInst, int64_t StDispImm,
+                   int64_t LMMOffset, int64_t SMMOffset);
+
+  void buildCopy(MachineInstr *LoadInst, unsigned NLoadOpcode, int64_t LoadDisp,
+                 MachineInstr *StoreInst, unsigned NStoreOpcode,
+                 int64_t StoreDisp, unsigned Size, int64_t LMMOffset,
+                 int64_t SMMOffset);
+
+  unsigned getRegSizeInBytes(MachineInstr *Inst);
+  static char ID;
+};
+
+} // end anonymous namespace
+
+char FixupSFBPass::ID = 0;
+
+FunctionPass *llvm::createX86FixupSFB() { return new FixupSFBPass(); }
+
+static bool isXMMLoadOpcode(unsigned Opcode) {
+  return Opcode == X86::MOVUPSrm || Opcode == X86::MOVAPSrm ||
+         Opcode == X86::VMOVUPSrm || Opcode == X86::VMOVAPSrm ||
+         Opcode == X86::VMOVUPDrm || Opcode == X86::VMOVAPDrm ||
+         Opcode == X86::VMOVDQUrm || Opcode == X86::VMOVDQArm ||
+         Opcode == X86::VMOVUPSZ128rm || Opcode == X86::VMOVAPSZ128rm ||
+         Opcode == X86::VMOVUPDZ128rm || Opcode == X86::VMOVAPDZ128rm ||
+         Opcode == X86::VMOVDQU64Z128rm || Opcode == X86::VMOVDQA64Z128rm ||
+         Opcode == X86::VMOVDQU32Z128rm || Opcode == X86::VMOVDQA32Z128rm;
+}
+static bool isYMMLoadOpcode(unsigned Opcode) {
+  return Opcode == X86::VMOVUPSYrm || Opcode == X86::VMOVAPSYrm ||
+         Opcode == X86::VMOVUPDYrm || Opcode == X86::VMOVAPDYrm ||
+         Opcode == X86::VMOVDQUYrm || Opcode == X86::VMOVDQAYrm ||
+         Opcode == X86::VMOVUPSZ256rm || Opcode == X86::VMOVAPSZ256rm ||
+         Opcode == X86::VMOVUPDZ256rm || Opcode == X86::VMOVAPDZ256rm ||
+         Opcode == X86::VMOVDQU64Z256rm || Opcode == X86::VMOVDQA64Z256rm ||
+         Opcode == X86::VMOVDQU32Z256rm || Opcode == X86::VMOVDQA32Z256rm;
+}
+
+static bool isPotentialBlockedMemCpyLd(unsigned Opcode) {
+  return isXMMLoadOpcode(Opcode) || isYMMLoadOpcode(Opcode);
+}
+
+std::map<unsigned, std::pair<unsigned, unsigned>> PotentialBlockedMemCpy{
+    {X86::MOVUPSrm, {X86::MOVUPSmr, X86::MOVAPSmr}},
+    {X86::MOVAPSrm, {X86::MOVUPSmr, X86::MOVAPSmr}},
+    {X86::VMOVUPSrm, {X86::VMOVUPSmr, X86::VMOVAPSmr}},
+    {X86::VMOVAPSrm, {X86::VMOVUPSmr, X86::VMOVAPSmr}},
+    {X86::VMOVUPDrm, {X86::VMOVUPDmr, X86::VMOVAPDmr}},
+    {X86::VMOVAPDrm, {X86::VMOVUPDmr, X86::VMOVAPDmr}},
+    {X86::VMOVDQUrm, {X86::VMOVDQUmr, X86::VMOVDQAmr}},
+    {X86::VMOVDQArm, {X86::VMOVDQUmr, X86::VMOVDQAmr}},
+    {X86::VMOVUPSZ128rm, {X86::VMOVUPSZ128mr, X86::VMOVAPSZ128mr}},
+    {X86::VMOVAPSZ128rm, {X86::VMOVUPSZ128mr, X86::VMOVAPSZ128mr}},
+    {X86::VMOVUPDZ128rm, {X86::VMOVUPDZ128mr, X86::VMOVAPDZ128mr}},
+    {X86::VMOVAPDZ128rm, {X86::VMOVUPDZ128mr, X86::VMOVAPDZ128mr}},
+    {X86::VMOVUPSYrm, {X86::VMOVUPSYmr, X86::VMOVAPSYmr}},
+    {X86::VMOVAPSYrm, {X86::VMOVUPSYmr, X86::VMOVAPSYmr}},
+    {X86::VMOVUPDYrm, {X86::VMOVUPDYmr, X86::VMOVAPDYmr}},
+    {X86::VMOVAPDYrm, {X86::VMOVUPDYmr, X86::VMOVAPDYmr}},
+    {X86::VMOVDQUYrm, {X86::VMOVDQUYmr, X86::VMOVDQAYmr}},
+    {X86::VMOVDQAYrm, {X86::VMOVDQUYmr, X86::VMOVDQAYmr}},
+    {X86::VMOVUPSZ256rm, {X86::VMOVUPSZ256mr, X86::VMOVAPSZ256mr}},
+    {X86::VMOVAPSZ256rm, {X86::VMOVUPSZ256mr, X86::VMOVAPSZ256mr}},
+    {X86::VMOVUPDZ256rm, {X86::VMOVUPDZ256mr, X86::VMOVAPDZ256mr}},
+    {X86::VMOVAPDZ256rm, {X86::VMOVUPDZ256mr, X86::VMOVAPDZ256mr}},
+    {X86::VMOVDQU64Z128rm, {X86::VMOVDQU64Z128mr, X86::VMOVDQA64Z128mr}},
+    {X86::VMOVDQA64Z128rm, {X86::VMOVDQU64Z128mr, X86::VMOVDQA64Z128mr}},
+    {X86::VMOVDQU32Z128rm, {X86::VMOVDQU32Z128mr, X86::VMOVDQA32Z128mr}},
+    {X86::VMOVDQA32Z128rm, {X86::VMOVDQU32Z128mr, X86::VMOVDQA32Z128mr}},
+    {X86::VMOVDQU64Z256rm, {X86::VMOVDQU64Z256mr, X86::VMOVDQA64Z256mr}},
+    {X86::VMOVDQA64Z256rm, {X86::VMOVDQU64Z256mr, X86::VMOVDQA64Z256mr}},
+    {X86::VMOVDQU32Z256rm, {X86::VMOVDQU32Z256mr, X86::VMOVDQA32Z256mr}},
+    {X86::VMOVDQA32Z256rm, {X86::VMOVDQU32Z256mr, X86::VMOVDQA32Z256mr}},
+};
+
+static bool isPotentialBlockedMemCpyPair(unsigned LdOpcode, unsigned StOpcode) {
+  auto PotentialStores = PotentialBlockedMemCpy.at(LdOpcode);
+  return PotentialStores.first == StOpcode ||
+         PotentialStores.second == StOpcode;
+}
+
+static bool isPotentialBlockingStoreInst(int Opcode, int LoadOpcode) {
+  bool PBlock = false;
+  PBlock |= Opcode == X86::MOV64mr || Opcode == X86::MOV64mi32 ||
+            Opcode == X86::MOV32mr || Opcode == X86::MOV32mi ||
+            Opcode == X86::MOV16mr || Opcode == X86::MOV16mi ||
+            Opcode == X86::MOV8mr || Opcode == X86::MOV8mi;
+  if (isYMMLoadOpcode(LoadOpcode))
+    PBlock |= Opcode == X86::VMOVUPSmr || Opcode == X86::VMOVAPSmr ||
+              Opcode == X86::VMOVUPDmr || Opcode == X86::VMOVAPDmr ||
+              Opcode == X86::VMOVDQUmr || Opcode == X86::VMOVDQAmr ||
+              Opcode == X86::VMOVUPSZ128mr || Opcode == X86::VMOVAPSZ128mr ||
+              Opcode == X86::VMOVUPDZ128mr || Opcode == X86::VMOVAPDZ128mr ||
+              Opcode == X86::VMOVDQU64Z128mr ||
+              Opcode == X86::VMOVDQA64Z128mr ||
+              Opcode == X86::VMOVDQU32Z128mr || Opcode == X86::VMOVDQA32Z128mr;
+  return PBlock;
+}
+
+static const int MOV128SZ = 16;
+static const int MOV64SZ = 8;
+static const int MOV32SZ = 4;
+static const int MOV16SZ = 2;
+static const int MOV8SZ = 1;
+
+std::map<unsigned, unsigned> YMMtoXMMLoadMap = {
+    {X86::VMOVUPSYrm, X86::VMOVUPSrm},
+    {X86::VMOVAPSYrm, X86::VMOVUPSrm},
+    {X86::VMOVUPDYrm, X86::VMOVUPDrm},
+    {X86::VMOVAPDYrm, X86::VMOVUPDrm},
+    {X86::VMOVDQUYrm, X86::VMOVDQUrm},
+    {X86::VMOVDQAYrm, X86::VMOVDQUrm},
+    {X86::VMOVUPSZ256rm, X86::VMOVUPSZ128rm},
+    {X86::VMOVAPSZ256rm, X86::VMOVUPSZ128rm},
+    {X86::VMOVUPDZ256rm, X86::VMOVUPDZ128rm},
+    {X86::VMOVAPDZ256rm, X86::VMOVUPDZ128rm},
+    {X86::VMOVDQU64Z256rm, X86::VMOVDQU64Z128rm},
+    {X86::VMOVDQA64Z256rm, X86::VMOVDQU64Z128rm},
+    {X86::VMOVDQU32Z256rm, X86::VMOVDQU32Z128rm},
+    {X86::VMOVDQA32Z256rm, X86::VMOVDQU32Z128rm},
+};
+
+std::map<unsigned, unsigned> YMMtoXMMStoreMap = {
+    {X86::VMOVUPSYmr, X86::VMOVUPSmr},
+    {X86::VMOVAPSYmr, X86::VMOVUPSmr},
+    {X86::VMOVUPDYmr, X86::VMOVUPDmr},
+    {X86::VMOVAPDYmr, X86::VMOVUPDmr},
+    {X86::VMOVDQUYmr, X86::VMOVDQUmr},
+    {X86::VMOVDQAYmr, X86::VMOVDQUmr},
+    {X86::VMOVUPSZ256mr, X86::VMOVUPSZ128mr},
+    {X86::VMOVAPSZ256mr, X86::VMOVUPSZ128mr},
+    {X86::VMOVUPDZ256mr, X86::VMOVUPDZ128mr},
+    {X86::VMOVAPDZ256mr, X86::VMOVUPDZ128mr},
+    {X86::VMOVDQU64Z256mr, X86::VMOVDQU64Z128mr},
+    {X86::VMOVDQA64Z256mr, X86::VMOVDQU64Z128mr},
+    {X86::VMOVDQU32Z256mr, X86::VMOVDQU32Z128mr},
+    {X86::VMOVDQA32Z256mr, X86::VMOVDQU32Z128mr},
+};
+
+static int getAddrOffset(MachineInstr *MI) {
+  const MCInstrDesc &Descl = MI->getDesc();
+  int AddrOffset = X86II::getMemoryOperandNo(Descl.TSFlags);
+  assert(AddrOffset != -1 && "Expected Memory Operand");
+  AddrOffset += X86II::getOperandBias(Descl);
+  return AddrOffset;
+}
+
+static MachineOperand &getBaseOperand(MachineInstr *MI) {
+  int AddrOffset = getAddrOffset(MI);
+  return MI->getOperand(AddrOffset + X86::AddrBaseReg);
+}
+
+static MachineOperand &getDispOperand(MachineInstr *MI) {
+  int AddrOffset = getAddrOffset(MI);
+  return MI->getOperand(AddrOffset + X86::AddrDisp);
+}
+
+// Relevant addressing modes contain only base register and immediate
+// displacement or frameindex and immediate displacement.
+// TODO: Consider expanding to other addressing modes in the future
+static bool isRelevantAddressingMode(MachineInstr *MI) {
+  int AddrOffset = getAddrOffset(MI);
+  MachineOperand &Base = MI->getOperand(AddrOffset + X86::AddrBaseReg);
+  MachineOperand &Disp = MI->getOperand(AddrOffset + X86::AddrDisp);
+  MachineOperand &Scale = MI->getOperand(AddrOffset + X86::AddrScaleAmt);
+  MachineOperand &Index = MI->getOperand(AddrOffset + X86::AddrIndexReg);
+  MachineOperand &Segment = MI->getOperand(AddrOffset + X86::AddrSegmentReg);
+
+  if (!((Base.isReg() && Base.getReg() != X86::NoRegister) || Base.isFI()))
+    return false;
+  if (!Disp.isImm())
+    return false;
+  if (Scale.getImm() != 1)
+    return false;
+  if (!(Index.isReg() && Index.getReg() == X86::NoRegister))
+    return false;
+  if (!(Segment.isReg() && Segment.getReg() == X86::NoRegister))
+    return false;
+  return true;
+}
+
+// Collect potentially blocking stores.
+// Limit the number of instructions backwards we want to inspect
+// since the effect of store block won't be visible if the store
+// and load instructions have enough instructions in between to
+// keep the core busy.
+static const unsigned LIMIT = 20;
+static SmallVector<MachineInstr *, 2>
+findPotentialBlockers(MachineInstr *LoadInst) {
+  SmallVector<MachineInstr *, 2> PotentialBlockers;
+  unsigned BlockLimit = 0;
+  for (MachineBasicBlock::iterator LI = LoadInst,
+                                   BB = LoadInst->getParent()->begin();
+       LI != BB; --LI) {
+    BlockLimit++;
+    if (BlockLimit >= LIMIT)
+      break;
+    MachineInstr &MI = *LI;
+    if (MI.getDesc().isCall())
+      break;
+    PotentialBlockers.push_back(&MI);
+  }
+  // If we didn't get to the instructions limit try predecessing blocks.
+  // Ideally we should traverse the predecessor blocks in depth with some
+  // coloring algorithm, but for now let's just look at the first order
+  // predecessors.
+  if (BlockLimit < LIMIT) {
+    MachineBasicBlock *MBB = LoadInst->getParent();
+    int LimitLeft = LIMIT - BlockLimit;
+    for (MachineBasicBlock::pred_iterator PB = MBB->pred_begin(),
+                                          PE = MBB->pred_end();
+         PB != PE; ++PB) {
+      MachineBasicBlock *PMBB = *PB;
+      int PredLimit = 0;
+      for (MachineBasicBlock::reverse_iterator PMI = PMBB->rbegin(),
+                                               PME = PMBB->rend();
+           PMI != PME; ++PMI) {
+        PredLimit++;
+        if (PredLimit >= LimitLeft)
+          break;
+        if (PMI->getDesc().isCall())
+          break;
+        PotentialBlockers.push_back(&*PMI);
+      }
+    }
+  }
+  return PotentialBlockers;
+}
+
+void FixupSFBPass::buildCopy(MachineInstr *LoadInst, unsigned NLoadOpcode,
+                             int64_t LoadDisp, MachineInstr *StoreInst,
+                             unsigned NStoreOpcode, int64_t StoreDisp,
+                             unsigned Size, int64_t LMMOffset,
+                             int64_t SMMOffset) {
+  MachineOperand &LoadBase = getBaseOperand(LoadInst);
+  MachineOperand &StoreBase = getBaseOperand(StoreInst);
+  MachineBasicBlock *MBB = LoadInst->getParent();
+  MachineMemOperand *LMMO = *LoadInst->memoperands_begin();
+  MachineMemOperand *SMMO = *StoreInst->memoperands_begin();
+
+  unsigned Reg1 = MRI->createVirtualRegister(
+      TII->getRegClass(TII->get(NLoadOpcode), 0, TRI, *(MBB->getParent())));
+  BuildMI(*MBB, LoadInst, LoadInst->getDebugLoc(), TII->get(NLoadOpcode), Reg1)
+      .add(LoadBase)
+      .addImm(1)
+      .addReg(X86::NoRegister)
+      .addImm(LoadDisp)
+      .addReg(X86::NoRegister)
+      .addMemOperand(
+          MBB->getParent()->getMachineMemOperand(LMMO, LMMOffset, Size));
+  DEBUG(LoadInst->getPrevNode()->dump());
+  // If the load and store are consecutive, use the loadInst location to
+  // reduce register pressure.
+  MachineInstr *StInst = StoreInst;
+  if (StoreInst->getPrevNode() == LoadInst)
+    StInst = LoadInst;
+  BuildMI(*MBB, StInst, StInst->getDebugLoc(), TII->get(NStoreOpcode))
+      .add(StoreBase)
+      .addImm(1)
+      .addReg(X86::NoRegister)
+      .addImm(StoreDisp)
+      .addReg(X86::NoRegister)
+      .addReg(Reg1)
+      .addMemOperand(
+          MBB->getParent()->getMachineMemOperand(SMMO, SMMOffset, Size));
+  DEBUG(StInst->getPrevNode()->dump());
+}
+
+void FixupSFBPass::buildCopies(int Size, MachineInstr *LoadInst,
+                               int64_t LdDispImm, MachineInstr *StoreInst,
+                               int64_t StDispImm, int64_t LMMOffset,
+                               int64_t SMMOffset) {
+  int LdDisp = LdDispImm;
+  int StDisp = StDispImm;
+  while (Size > 0) {
+    if ((Size - MOV128SZ >= 0) && isYMMLoadOpcode(LoadInst->getOpcode())) {
+      Size = Size - MOV128SZ;
+      buildCopy(LoadInst, YMMtoXMMLoadMap.at(LoadInst->getOpcode()), LdDisp,
+                StoreInst, YMMtoXMMStoreMap.at(StoreInst->getOpcode()), StDisp,
+                MOV128SZ, LMMOffset, SMMOffset);
+      LdDisp += MOV128SZ;
+      StDisp += MOV128SZ;
+      LMMOffset += MOV128SZ;
+      SMMOffset += MOV128SZ;
+      continue;
+    }
+    if (Size - MOV64SZ >= 0 && Is64Bit) {
+      Size = Size - MOV64SZ;
+      buildCopy(LoadInst, X86::MOV64rm, LdDisp, StoreInst, X86::MOV64mr, StDisp,
+                MOV64SZ, LMMOffset, SMMOffset);
+      LdDisp += MOV64SZ;
+      StDisp += MOV64SZ;
+      LMMOffset += MOV64SZ;
+      SMMOffset += MOV64SZ;
+      continue;
+    }
+    if (Size - MOV32SZ >= 0) {
+      Size = Size - MOV32SZ;
+      buildCopy(LoadInst, X86::MOV32rm, LdDisp, StoreInst, X86::MOV32mr, StDisp,
+                MOV32SZ, LMMOffset, SMMOffset);
+      LdDisp += MOV32SZ;
+      StDisp += MOV32SZ;
+      LMMOffset += MOV32SZ;
+      SMMOffset += MOV32SZ;
+      continue;
+    }
+    if (Size - MOV16SZ >= 0) {
+      Size = Size - MOV16SZ;
+      buildCopy(LoadInst, X86::MOV16rm, LdDisp, StoreInst, X86::MOV16mr, StDisp,
+                MOV16SZ, LMMOffset, SMMOffset);
+      LdDisp += MOV16SZ;
+      StDisp += MOV16SZ;
+      LMMOffset += MOV16SZ;
+      SMMOffset += MOV16SZ;
+      continue;
+    }
+    if (Size - MOV8SZ >= 0) {
+      Size = Size - MOV8SZ;
+      buildCopy(LoadInst, X86::MOV8rm, LdDisp, StoreInst, X86::MOV8mr, StDisp,
+                MOV8SZ, LMMOffset, SMMOffset);
+      LdDisp += MOV8SZ;
+      StDisp += MOV8SZ;
+      LMMOffset += MOV8SZ;
+      SMMOffset += MOV8SZ;
+      continue;
+    }
+  }
+  assert(Size == 0 && "Wrong size division");
+}
+
+static void updateKillStatus(MachineInstr *LoadInst, MachineInstr *StoreInst) {
+  MachineOperand &LoadBase = getBaseOperand(LoadInst);
+  MachineOperand &StoreBase = getBaseOperand(StoreInst);
+  if (LoadBase.isReg()) {
+    MachineInstr *LastLoad = LoadInst->getPrevNode();
+    // If the original load and store to xmm/ymm were consecutive
+    // then the partial copies were also created in
+    // a consecutive order to reduce register pressure,
+    // and the location of the last load is before the last store.
+    if (StoreInst->getPrevNode() == LoadInst)
+      LastLoad = LoadInst->getPrevNode()->getPrevNode();
+    getBaseOperand(LastLoad).setIsKill(LoadBase.isKill());
+  }
+  if (StoreBase.isReg()) {
+    MachineInstr *StInst = StoreInst;
+    if (StoreInst->getPrevNode() == LoadInst)
+      StInst = LoadInst;
+    getBaseOperand(StInst->getPrevNode()).setIsKill(StoreBase.isKill());
+  }
+}
+
+void FixupSFBPass::findPotentiallylBlockedCopies(MachineFunction &MF) {
+  for (auto &MBB : MF)
+    for (auto &MI : MBB)
+      if (isPotentialBlockedMemCpyLd(MI.getOpcode())) {
+        int DefVR = MI.getOperand(0).getReg();
+        if (MRI->hasOneUse(DefVR))
+          for (auto UI = MRI->use_nodbg_begin(DefVR), UE = MRI->use_nodbg_end();
+               UI != UE;) {
+            MachineOperand &StoreMO = *UI++;
+            MachineInstr &StoreMI = *StoreMO.getParent();
+            if (isPotentialBlockedMemCpyPair(MI.getOpcode(),
+                                             StoreMI.getOpcode()) &&
+                (StoreMI.getParent() == MI.getParent()))
+              if (isRelevantAddressingMode(&MI) &&
+                  isRelevantAddressingMode(&StoreMI))
+                BlockedLoadsStores.push_back(
+                    std::pair<MachineInstr *, MachineInstr *>(&MI, &StoreMI));
+          }
+      }
+}
+unsigned FixupSFBPass::getRegSizeInBytes(MachineInstr *LoadInst) {
+  auto TRC = TII->getRegClass(TII->get(LoadInst->getOpcode()), 0, TRI,
+                              *LoadInst->getParent()->getParent());
+  return TRI->getRegSizeInBits(*TRC) / 8;
+}
+
+void FixupSFBPass::breakBlockedCopies(
+    MachineInstr *LoadInst, MachineInstr *StoreInst,
+    const std::map<int64_t, unsigned> &BlockingStoresDisp) {
+  int64_t LdDispImm = getDispOperand(LoadInst).getImm();
+  int64_t StDispImm = getDispOperand(StoreInst).getImm();
+  int64_t LMMOffset = (*LoadInst->memoperands_begin())->getOffset();
+  int64_t SMMOffset = (*StoreInst->memoperands_begin())->getOffset();
+
+  int64_t LdDisp1 = LdDispImm;
+  int64_t LdDisp2 = 0;
+  int64_t StDisp1 = StDispImm;
+  int64_t StDisp2 = 0;
+  unsigned Size1 = 0;
+  unsigned Size2 = 0;
+  int64_t LdStDelta = StDispImm - LdDispImm;
+  for (auto inst : BlockingStoresDisp) {
+    LdDisp2 = inst.first;
+    StDisp2 = inst.first + LdStDelta;
+    Size1 = std::abs(std::abs(LdDisp2) - std::abs(LdDisp1));
+    Size2 = inst.second;
+    buildCopies(Size1, LoadInst, LdDisp1, StoreInst, StDisp1, LMMOffset,
+                SMMOffset);
+    buildCopies(Size2, LoadInst, LdDisp2, StoreInst, StDisp2, LMMOffset + Size1,
+                SMMOffset + Size1);
+    LdDisp1 = LdDisp2 + Size2;
+    StDisp1 = StDisp2 + Size2;
+    LMMOffset += Size1 + Size2;
+    SMMOffset += Size1 + Size2;
+  }
+  unsigned Size3 = (LdDispImm + getRegSizeInBytes(LoadInst)) - LdDisp1;
+  buildCopies(Size3, LoadInst, LdDisp1, StoreInst, StDisp1, LMMOffset,
+              LMMOffset);
+}
+
+bool FixupSFBPass::runOnMachineFunction(MachineFunction &MF) {
+  bool Changed = false;
+
+  if (DisableX86FixupSFB || skipFunction(MF.getFunction()))
+    return false;
+
+  MRI = &MF.getRegInfo();
+  assert(MRI->isSSA() && "Expected MIR to be in SSA form");
+  TII = MF.getSubtarget<X86Subtarget>().getInstrInfo();
+  TRI = MF.getSubtarget<X86Subtarget>().getRegisterInfo();
+  Is64Bit = MF.getSubtarget<X86Subtarget>().is64Bit();
+  DEBUG(dbgs() << "Start X86FixupSFB\n";);
+  // Look for a load then a store to XMM/YMM which look like a memcpy
+  findPotentiallylBlockedCopies(MF);
+
+  for (auto LoadStoreInst : BlockedLoadsStores) {
+    MachineInstr *LoadInst = LoadStoreInst.first;
+    SmallVector<MachineInstr *, 2> PotentialBlockers =
+        findPotentialBlockers(LoadInst);
+
+    MachineOperand &LoadBase = getBaseOperand(LoadInst);
+    int64_t LdDispImm = getDispOperand(LoadInst).getImm();
+    std::map<int64_t, unsigned> BlockingStoresDisp;
+    int LdBaseReg = LoadBase.isReg() ? LoadBase.getReg() : LoadBase.getIndex();
+
+    for (auto PBInst : PotentialBlockers) {
+      if (isPotentialBlockingStoreInst(PBInst->getOpcode(),
+                                       LoadInst->getOpcode())) {
+        if (!isRelevantAddressingMode(PBInst))
+          continue;
+        MachineOperand &PBstoreBase = getBaseOperand(PBInst);
+        int64_t PBstDispImm = getDispOperand(PBInst).getImm();
+        assert(PBInst->hasOneMemOperand() && "Expected One Memory Operand");
+        unsigned PBstSize = (*PBInst->memoperands_begin())->getSize();
+        int PBstBaseReg =
+            PBstoreBase.isReg() ? PBstoreBase.getReg() : PBstoreBase.getIndex();
+        // This check doesn't cover all cases, but it will suffice for now.
+        // TODO: take branch probability into consideration, if the blocking
+        // store is in an unreached block, breaking the memcopy could lose
+        // performance.
+        if (((LoadBase.isReg() && PBstoreBase.isReg()) ||
+             (LoadBase.isFI() && PBstoreBase.isFI())) &&
+            LdBaseReg == PBstBaseReg &&
+            ((PBstDispImm >= LdDispImm) &&
+             (PBstDispImm <=
+              LdDispImm + (getRegSizeInBytes(LoadInst) - PBstSize)))) {
+          if (BlockingStoresDisp.count(PBstDispImm)) {
+            if (BlockingStoresDisp[PBstDispImm] > PBstSize)
+              BlockingStoresDisp[PBstDispImm] = PBstSize;
+
+          } else
+            BlockingStoresDisp[PBstDispImm] = PBstSize;
+        }
+      }
+    }
+
+    if (BlockingStoresDisp.size() == 0)
+      continue;
+
+    // We found a store forward block, break the memcpy's load and store
+    // into smaller copies such that each smaller store that was causing
+    // a store block would now be copied separately.
+    MachineInstr *StoreInst = LoadStoreInst.second;
+    DEBUG(dbgs() << "Blocked load and store instructions: \n");
+    DEBUG(LoadInst->dump());
+    DEBUG(StoreInst->dump());
+    DEBUG(dbgs() << "Replaced with:\n");
+    breakBlockedCopies(LoadInst, StoreInst, BlockingStoresDisp);
+    updateKillStatus(LoadInst, StoreInst);
+    ForRemoval.push_back(LoadInst);
+    ForRemoval.push_back(StoreInst);
+  }
+  for (auto RemovedInst : ForRemoval) {
+    RemovedInst->eraseFromParent();
+  }
+  ForRemoval.clear();
+  BlockedLoadsStores.clear();
+  DEBUG(dbgs() << "End X86FixupSFB\n";);
+
+  return Changed;
+}

Modified: llvm/trunk/lib/Target/X86/X86TargetMachine.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86TargetMachine.cpp?rev=325128&r1=325127&r2=325128&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86TargetMachine.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86TargetMachine.cpp Wed Feb 14 06:58:53 2018
@@ -449,6 +449,7 @@ void X86PassConfig::addPreRegAlloc() {
     addPass(createX86FixupSetCC());
     addPass(createX86OptimizeLEAs());
     addPass(createX86CallFrameOptimization());
+    addPass(createX86FixupSFB());
   }
 
   addPass(createX86WinAllocaExpander());

Added: llvm/trunk/test/CodeGen/X86/fixup-sfb-32.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/fixup-sfb-32.ll?rev=325128&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/fixup-sfb-32.ll (added)
+++ llvm/trunk/test/CodeGen/X86/fixup-sfb-32.ll Wed Feb 14 06:58:53 2018
@@ -0,0 +1,1926 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=i686-linux | FileCheck %s -check-prefix=CHECK
+; RUN: llc < %s -mtriple=i686-linux --disable-fixup-SFB | FileCheck %s --check-prefix=DISABLED
+; RUN: llc < %s -mtriple=i686-linux -mattr +sse4.1 | FileCheck %s -check-prefix=CHECK-AVX2
+; RUN: llc < %s -mtriple=i686-linux -mattr=+avx512f,+avx512bw,+avx512vl,+avx512dq | FileCheck %s -check-prefix=CHECK-AVX512
+
+%struct.S = type { i32, i32, i32, i32 }
+
+; Function Attrs: nounwind uwtable
+define void @test_conditional_block(%struct.S* nocapture %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3, %struct.S* nocapture readonly %s4) local_unnamed_addr #0 {
+; CHECK-LABEL: test_conditional_block:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %edi
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    pushl %esi
+; CHECK-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-NEXT:    .cfi_offset %esi, -12
+; CHECK-NEXT:    .cfi_offset %edi, -8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    cmpl $18, %edi
+; CHECK-NEXT:    jl .LBB0_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %edi, 4(%ecx)
+; CHECK-NEXT:  .LBB0_2: # %if.end
+; CHECK-NEXT:    movups (%esi), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%edx)
+; CHECK-NEXT:    movl (%ecx), %edx
+; CHECK-NEXT:    movl %edx, (%eax)
+; CHECK-NEXT:    movl 4(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 4(%eax)
+; CHECK-NEXT:    movl 8(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 8(%eax)
+; CHECK-NEXT:    movl 12(%ecx), %ecx
+; CHECK-NEXT:    movl %ecx, 12(%eax)
+; CHECK-NEXT:    popl %esi
+; CHECK-NEXT:    popl %edi
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_conditional_block:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %edi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    pushl %esi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 12
+; DISABLED-NEXT:    .cfi_offset %esi, -12
+; DISABLED-NEXT:    .cfi_offset %edi, -8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; DISABLED-NEXT:    cmpl $18, %edi
+; DISABLED-NEXT:    jl .LBB0_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %edi, 4(%esi)
+; DISABLED-NEXT:  .LBB0_2: # %if.end
+; DISABLED-NEXT:    movups (%edx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%ecx)
+; DISABLED-NEXT:    movups (%esi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    popl %esi
+; DISABLED-NEXT:    popl %edi
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_conditional_block:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %edi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    pushl %esi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX2-NEXT:    .cfi_offset %esi, -12
+; CHECK-AVX2-NEXT:    .cfi_offset %edi, -8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    cmpl $18, %edi
+; CHECK-AVX2-NEXT:    jl .LBB0_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %edi, 4(%ecx)
+; CHECK-AVX2-NEXT:  .LBB0_2: # %if.end
+; CHECK-AVX2-NEXT:    movups (%esi), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, (%edx)
+; CHECK-AVX2-NEXT:    movl (%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, (%eax)
+; CHECK-AVX2-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX2-NEXT:    movl 8(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 8(%eax)
+; CHECK-AVX2-NEXT:    movl 12(%ecx), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX2-NEXT:    popl %esi
+; CHECK-AVX2-NEXT:    popl %edi
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_conditional_block:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %edi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    pushl %esi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX512-NEXT:    .cfi_offset %esi, -12
+; CHECK-AVX512-NEXT:    .cfi_offset %edi, -8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    cmpl $18, %edi
+; CHECK-AVX512-NEXT:    jl .LBB0_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %edi, 4(%ecx)
+; CHECK-AVX512-NEXT:  .LBB0_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%esi), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%edx)
+; CHECK-AVX512-NEXT:    movl (%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, (%eax)
+; CHECK-AVX512-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX512-NEXT:    movl 8(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 8(%eax)
+; CHECK-AVX512-NEXT:    movl 12(%ecx), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX512-NEXT:    popl %esi
+; CHECK-AVX512-NEXT:    popl %edi
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 1
+  store i32 %x, i32* %b, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S* %s3 to i8*
+  %1 = bitcast %struct.S* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  %2 = bitcast %struct.S* %s2 to i8*
+  %3 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 4, i1 false)
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define void @test_imm_store(%struct.S* nocapture %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3) local_unnamed_addr #0 {
+; CHECK-LABEL: test_imm_store:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-NEXT:    movl $0, (%edx)
+; CHECK-NEXT:    movl $1, (%ecx)
+; CHECK-NEXT:    movl (%edx), %ecx
+; CHECK-NEXT:    movl %ecx, (%eax)
+; CHECK-NEXT:    movl 4(%edx), %ecx
+; CHECK-NEXT:    movl %ecx, 4(%eax)
+; CHECK-NEXT:    movl 8(%edx), %ecx
+; CHECK-NEXT:    movl %ecx, 8(%eax)
+; CHECK-NEXT:    movl 12(%edx), %ecx
+; CHECK-NEXT:    movl %ecx, 12(%eax)
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_imm_store:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; DISABLED-NEXT:    movl $0, (%edx)
+; DISABLED-NEXT:    movl $1, (%ecx)
+; DISABLED-NEXT:    movups (%edx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_imm_store:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX2-NEXT:    movl $0, (%edx)
+; CHECK-AVX2-NEXT:    movl $1, (%ecx)
+; CHECK-AVX2-NEXT:    movl (%edx), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, (%eax)
+; CHECK-AVX2-NEXT:    movl 4(%edx), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 4(%eax)
+; CHECK-AVX2-NEXT:    movl 8(%edx), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 8(%eax)
+; CHECK-AVX2-NEXT:    movl 12(%edx), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_imm_store:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX512-NEXT:    movl $0, (%edx)
+; CHECK-AVX512-NEXT:    movl $1, (%ecx)
+; CHECK-AVX512-NEXT:    movl (%edx), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, (%eax)
+; CHECK-AVX512-NEXT:    movl 4(%edx), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 4(%eax)
+; CHECK-AVX512-NEXT:    movl 8(%edx), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 8(%eax)
+; CHECK-AVX512-NEXT:    movl 12(%edx), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %a = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 0
+  store i32 0, i32* %a, align 4
+  %a1 = getelementptr inbounds %struct.S, %struct.S* %s3, i64 0, i32 0
+  store i32 1, i32* %a1, align 4
+  %0 = bitcast %struct.S* %s2 to i8*
+  %1 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define void @test_nondirect_br(%struct.S* nocapture %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3, %struct.S* nocapture readonly %s4, i32 %x2) local_unnamed_addr #0 {
+; CHECK-LABEL: test_nondirect_br:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %edi
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    pushl %esi
+; CHECK-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-NEXT:    .cfi_offset %esi, -12
+; CHECK-NEXT:    .cfi_offset %edi, -8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    cmpl $18, %ecx
+; CHECK-NEXT:    jl .LBB2_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %ecx, 4(%eax)
+; CHECK-NEXT:  .LBB2_2: # %if.end
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    cmpl $14, %edx
+; CHECK-NEXT:    jl .LBB2_4
+; CHECK-NEXT:  # %bb.3: # %if.then2
+; CHECK-NEXT:    movl %edx, 12(%eax)
+; CHECK-NEXT:  .LBB2_4: # %if.end3
+; CHECK-NEXT:    movups (%edi), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%esi)
+; CHECK-NEXT:    movl (%eax), %edx
+; CHECK-NEXT:    movl %edx, (%ecx)
+; CHECK-NEXT:    movl 4(%eax), %edx
+; CHECK-NEXT:    movl %edx, 4(%ecx)
+; CHECK-NEXT:    movl 8(%eax), %edx
+; CHECK-NEXT:    movl %edx, 8(%ecx)
+; CHECK-NEXT:    movl 12(%eax), %eax
+; CHECK-NEXT:    movl %eax, 12(%ecx)
+; CHECK-NEXT:    popl %esi
+; CHECK-NEXT:    popl %edi
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_nondirect_br:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %edi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    pushl %esi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 12
+; DISABLED-NEXT:    .cfi_offset %esi, -12
+; DISABLED-NEXT:    .cfi_offset %edi, -8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB2_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %edx, 4(%eax)
+; DISABLED-NEXT:  .LBB2_2: # %if.end
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; DISABLED-NEXT:    cmpl $14, %ecx
+; DISABLED-NEXT:    jl .LBB2_4
+; DISABLED-NEXT:  # %bb.3: # %if.then2
+; DISABLED-NEXT:    movl %ecx, 12(%eax)
+; DISABLED-NEXT:  .LBB2_4: # %if.end3
+; DISABLED-NEXT:    movups (%edi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%esi)
+; DISABLED-NEXT:    movups (%eax), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%edx)
+; DISABLED-NEXT:    popl %esi
+; DISABLED-NEXT:    popl %edi
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_nondirect_br:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %edi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    pushl %esi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX2-NEXT:    .cfi_offset %esi, -12
+; CHECK-AVX2-NEXT:    .cfi_offset %edi, -8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    cmpl $18, %ecx
+; CHECK-AVX2-NEXT:    jl .LBB2_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %ecx, 4(%eax)
+; CHECK-AVX2-NEXT:  .LBB2_2: # %if.end
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    cmpl $14, %edx
+; CHECK-AVX2-NEXT:    jl .LBB2_4
+; CHECK-AVX2-NEXT:  # %bb.3: # %if.then2
+; CHECK-AVX2-NEXT:    movl %edx, 12(%eax)
+; CHECK-AVX2-NEXT:  .LBB2_4: # %if.end3
+; CHECK-AVX2-NEXT:    movups (%edi), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, (%esi)
+; CHECK-AVX2-NEXT:    movl (%eax), %edx
+; CHECK-AVX2-NEXT:    movl %edx, (%ecx)
+; CHECK-AVX2-NEXT:    movl 4(%eax), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 4(%ecx)
+; CHECK-AVX2-NEXT:    movl 8(%eax), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 8(%ecx)
+; CHECK-AVX2-NEXT:    movl 12(%eax), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 12(%ecx)
+; CHECK-AVX2-NEXT:    popl %esi
+; CHECK-AVX2-NEXT:    popl %edi
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_nondirect_br:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %edi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    pushl %esi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX512-NEXT:    .cfi_offset %esi, -12
+; CHECK-AVX512-NEXT:    .cfi_offset %edi, -8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    cmpl $18, %ecx
+; CHECK-AVX512-NEXT:    jl .LBB2_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %ecx, 4(%eax)
+; CHECK-AVX512-NEXT:  .LBB2_2: # %if.end
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    cmpl $14, %edx
+; CHECK-AVX512-NEXT:    jl .LBB2_4
+; CHECK-AVX512-NEXT:  # %bb.3: # %if.then2
+; CHECK-AVX512-NEXT:    movl %edx, 12(%eax)
+; CHECK-AVX512-NEXT:  .LBB2_4: # %if.end3
+; CHECK-AVX512-NEXT:    vmovups (%edi), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%esi)
+; CHECK-AVX512-NEXT:    movl (%eax), %edx
+; CHECK-AVX512-NEXT:    movl %edx, (%ecx)
+; CHECK-AVX512-NEXT:    movl 4(%eax), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 4(%ecx)
+; CHECK-AVX512-NEXT:    movl 8(%eax), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 8(%ecx)
+; CHECK-AVX512-NEXT:    movl 12(%eax), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 12(%ecx)
+; CHECK-AVX512-NEXT:    popl %esi
+; CHECK-AVX512-NEXT:    popl %edi
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 1
+  store i32 %x, i32* %b, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %cmp1 = icmp sgt i32 %x2, 13
+  br i1 %cmp1, label %if.then2, label %if.end3
+
+if.then2:                                         ; preds = %if.end
+  %d = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 3
+  store i32 %x2, i32* %d, align 4
+  br label %if.end3
+
+if.end3:                                          ; preds = %if.then2, %if.end
+  %0 = bitcast %struct.S* %s3 to i8*
+  %1 = bitcast %struct.S* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  %2 = bitcast %struct.S* %s2 to i8*
+  %3 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 4, i1 false)
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define void @test_2preds_block(%struct.S* nocapture %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3, %struct.S* nocapture readonly %s4, i32 %x2) local_unnamed_addr #0 {
+; CHECK-LABEL: test_2preds_block:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %ebx
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    pushl %edi
+; CHECK-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-NEXT:    pushl %esi
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    .cfi_offset %esi, -16
+; CHECK-NEXT:    .cfi_offset %edi, -12
+; CHECK-NEXT:    .cfi_offset %ebx, -8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; CHECK-NEXT:    movl %ebx, 12(%ecx)
+; CHECK-NEXT:    cmpl $18, %edi
+; CHECK-NEXT:    jl .LBB3_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %edi, 4(%ecx)
+; CHECK-NEXT:  .LBB3_2: # %if.end
+; CHECK-NEXT:    movups (%esi), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%edx)
+; CHECK-NEXT:    movl (%ecx), %edx
+; CHECK-NEXT:    movl %edx, (%eax)
+; CHECK-NEXT:    movl 4(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 4(%eax)
+; CHECK-NEXT:    movl 8(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 8(%eax)
+; CHECK-NEXT:    movl 12(%ecx), %ecx
+; CHECK-NEXT:    movl %ecx, 12(%eax)
+; CHECK-NEXT:    popl %esi
+; CHECK-NEXT:    popl %edi
+; CHECK-NEXT:    popl %ebx
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_2preds_block:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %ebx
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    pushl %edi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 12
+; DISABLED-NEXT:    pushl %esi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 16
+; DISABLED-NEXT:    .cfi_offset %esi, -16
+; DISABLED-NEXT:    .cfi_offset %edi, -12
+; DISABLED-NEXT:    .cfi_offset %ebx, -8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; DISABLED-NEXT:    movl %ebx, 12(%esi)
+; DISABLED-NEXT:    cmpl $18, %edi
+; DISABLED-NEXT:    jl .LBB3_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %edi, 4(%esi)
+; DISABLED-NEXT:  .LBB3_2: # %if.end
+; DISABLED-NEXT:    movups (%edx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%ecx)
+; DISABLED-NEXT:    movups (%esi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    popl %esi
+; DISABLED-NEXT:    popl %edi
+; DISABLED-NEXT:    popl %ebx
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_2preds_block:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %ebx
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    pushl %edi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX2-NEXT:    pushl %esi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX2-NEXT:    .cfi_offset %esi, -16
+; CHECK-AVX2-NEXT:    .cfi_offset %edi, -12
+; CHECK-AVX2-NEXT:    .cfi_offset %ebx, -8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; CHECK-AVX2-NEXT:    movl %ebx, 12(%ecx)
+; CHECK-AVX2-NEXT:    cmpl $18, %edi
+; CHECK-AVX2-NEXT:    jl .LBB3_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %edi, 4(%ecx)
+; CHECK-AVX2-NEXT:  .LBB3_2: # %if.end
+; CHECK-AVX2-NEXT:    movups (%esi), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, (%edx)
+; CHECK-AVX2-NEXT:    movl (%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, (%eax)
+; CHECK-AVX2-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX2-NEXT:    movl 8(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 8(%eax)
+; CHECK-AVX2-NEXT:    movl 12(%ecx), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX2-NEXT:    popl %esi
+; CHECK-AVX2-NEXT:    popl %edi
+; CHECK-AVX2-NEXT:    popl %ebx
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_2preds_block:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %ebx
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    pushl %edi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX512-NEXT:    pushl %esi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX512-NEXT:    .cfi_offset %esi, -16
+; CHECK-AVX512-NEXT:    .cfi_offset %edi, -12
+; CHECK-AVX512-NEXT:    .cfi_offset %ebx, -8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; CHECK-AVX512-NEXT:    movl %ebx, 12(%ecx)
+; CHECK-AVX512-NEXT:    cmpl $18, %edi
+; CHECK-AVX512-NEXT:    jl .LBB3_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %edi, 4(%ecx)
+; CHECK-AVX512-NEXT:  .LBB3_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%esi), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%edx)
+; CHECK-AVX512-NEXT:    movl (%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, (%eax)
+; CHECK-AVX512-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX512-NEXT:    movl 8(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 8(%eax)
+; CHECK-AVX512-NEXT:    movl 12(%ecx), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX512-NEXT:    popl %esi
+; CHECK-AVX512-NEXT:    popl %edi
+; CHECK-AVX512-NEXT:    popl %ebx
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %d = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 3
+  store i32 %x2, i32* %d, align 4
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 1
+  store i32 %x, i32* %b, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S* %s3 to i8*
+  %1 = bitcast %struct.S* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  %2 = bitcast %struct.S* %s2 to i8*
+  %3 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 4, i1 false)
+  ret void
+}
+%struct.S2 = type { i64, i64 }
+
+; Function Attrs: nounwind uwtable
+define void @test_type64(%struct.S2* nocapture %s1, %struct.S2* nocapture %s2, i32 %x, %struct.S2* nocapture %s3, %struct.S2* nocapture readonly %s4) local_unnamed_addr #0 {
+; CHECK-LABEL: test_type64:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %edi
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    pushl %esi
+; CHECK-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-NEXT:    .cfi_offset %esi, -12
+; CHECK-NEXT:    .cfi_offset %edi, -8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    cmpl $18, %edi
+; CHECK-NEXT:    jl .LBB4_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %edi, 8(%ecx)
+; CHECK-NEXT:    sarl $31, %edi
+; CHECK-NEXT:    movl %edi, 12(%ecx)
+; CHECK-NEXT:  .LBB4_2: # %if.end
+; CHECK-NEXT:    movups (%esi), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%edx)
+; CHECK-NEXT:    movl (%ecx), %edx
+; CHECK-NEXT:    movl %edx, (%eax)
+; CHECK-NEXT:    movl 4(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 4(%eax)
+; CHECK-NEXT:    movl 8(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 8(%eax)
+; CHECK-NEXT:    movl 12(%ecx), %ecx
+; CHECK-NEXT:    movl %ecx, 12(%eax)
+; CHECK-NEXT:    popl %esi
+; CHECK-NEXT:    popl %edi
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_type64:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %edi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    pushl %esi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 12
+; DISABLED-NEXT:    .cfi_offset %esi, -12
+; DISABLED-NEXT:    .cfi_offset %edi, -8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; DISABLED-NEXT:    cmpl $18, %edi
+; DISABLED-NEXT:    jl .LBB4_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %edi, 8(%esi)
+; DISABLED-NEXT:    sarl $31, %edi
+; DISABLED-NEXT:    movl %edi, 12(%esi)
+; DISABLED-NEXT:  .LBB4_2: # %if.end
+; DISABLED-NEXT:    movups (%edx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%ecx)
+; DISABLED-NEXT:    movups (%esi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    popl %esi
+; DISABLED-NEXT:    popl %edi
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_type64:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %edi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    pushl %esi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX2-NEXT:    .cfi_offset %esi, -12
+; CHECK-AVX2-NEXT:    .cfi_offset %edi, -8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    cmpl $18, %edi
+; CHECK-AVX2-NEXT:    jl .LBB4_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %edi, 8(%ecx)
+; CHECK-AVX2-NEXT:    sarl $31, %edi
+; CHECK-AVX2-NEXT:    movl %edi, 12(%ecx)
+; CHECK-AVX2-NEXT:  .LBB4_2: # %if.end
+; CHECK-AVX2-NEXT:    movups (%esi), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, (%edx)
+; CHECK-AVX2-NEXT:    movl (%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, (%eax)
+; CHECK-AVX2-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX2-NEXT:    movl 8(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 8(%eax)
+; CHECK-AVX2-NEXT:    movl 12(%ecx), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX2-NEXT:    popl %esi
+; CHECK-AVX2-NEXT:    popl %edi
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_type64:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %edi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    pushl %esi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX512-NEXT:    .cfi_offset %esi, -12
+; CHECK-AVX512-NEXT:    .cfi_offset %edi, -8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    cmpl $18, %edi
+; CHECK-AVX512-NEXT:    jl .LBB4_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %edi, 8(%ecx)
+; CHECK-AVX512-NEXT:    sarl $31, %edi
+; CHECK-AVX512-NEXT:    movl %edi, 12(%ecx)
+; CHECK-AVX512-NEXT:  .LBB4_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%esi), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%edx)
+; CHECK-AVX512-NEXT:    movl (%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, (%eax)
+; CHECK-AVX512-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX512-NEXT:    movl 8(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 8(%eax)
+; CHECK-AVX512-NEXT:    movl 12(%ecx), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX512-NEXT:    popl %esi
+; CHECK-AVX512-NEXT:    popl %edi
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %conv = sext i32 %x to i64
+  %b = getelementptr inbounds %struct.S2, %struct.S2* %s1, i64 0, i32 1
+  store i64 %conv, i64* %b, align 8
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S2* %s3 to i8*
+  %1 = bitcast %struct.S2* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 8, i1 false)
+  %2 = bitcast %struct.S2* %s2 to i8*
+  %3 = bitcast %struct.S2* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 8, i1 false)
+  ret void
+}
+%struct.S3 = type { i64, i8, i8, i16, i32 }
+
+; Function Attrs: noinline nounwind uwtable
+define void @test_mixed_type(%struct.S3* nocapture %s1, %struct.S3* nocapture %s2, i32 %x, %struct.S3* nocapture readnone %s3, %struct.S3* nocapture readnone %s4) local_unnamed_addr #0 {
+; CHECK-LABEL: test_mixed_type:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %esi
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    .cfi_offset %esi, -8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    cmpl $18, %edx
+; CHECK-NEXT:    jl .LBB5_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %edx, %esi
+; CHECK-NEXT:    sarl $31, %esi
+; CHECK-NEXT:    movl %edx, (%ecx)
+; CHECK-NEXT:    movl %esi, 4(%ecx)
+; CHECK-NEXT:    movb %dl, 8(%ecx)
+; CHECK-NEXT:  .LBB5_2: # %if.end
+; CHECK-NEXT:    movl (%ecx), %edx
+; CHECK-NEXT:    movl %edx, (%eax)
+; CHECK-NEXT:    movl 4(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 4(%eax)
+; CHECK-NEXT:    movb 8(%ecx), %dl
+; CHECK-NEXT:    movb %dl, 8(%eax)
+; CHECK-NEXT:    movl 9(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 9(%eax)
+; CHECK-NEXT:    movzwl 13(%ecx), %edx
+; CHECK-NEXT:    movw %dx, 13(%eax)
+; CHECK-NEXT:    movb 15(%ecx), %cl
+; CHECK-NEXT:    movb %cl, 15(%eax)
+; CHECK-NEXT:    popl %esi
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_mixed_type:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %esi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    .cfi_offset %esi, -8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB5_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %edx, %esi
+; DISABLED-NEXT:    sarl $31, %esi
+; DISABLED-NEXT:    movl %edx, (%ecx)
+; DISABLED-NEXT:    movl %esi, 4(%ecx)
+; DISABLED-NEXT:    movb %dl, 8(%ecx)
+; DISABLED-NEXT:  .LBB5_2: # %if.end
+; DISABLED-NEXT:    movups (%ecx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    popl %esi
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_mixed_type:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %esi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    .cfi_offset %esi, -8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    cmpl $18, %edx
+; CHECK-AVX2-NEXT:    jl .LBB5_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %edx, %esi
+; CHECK-AVX2-NEXT:    sarl $31, %esi
+; CHECK-AVX2-NEXT:    movl %edx, (%ecx)
+; CHECK-AVX2-NEXT:    movl %esi, 4(%ecx)
+; CHECK-AVX2-NEXT:    movb %dl, 8(%ecx)
+; CHECK-AVX2-NEXT:  .LBB5_2: # %if.end
+; CHECK-AVX2-NEXT:    movl (%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, (%eax)
+; CHECK-AVX2-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX2-NEXT:    movb 8(%ecx), %dl
+; CHECK-AVX2-NEXT:    movb %dl, 8(%eax)
+; CHECK-AVX2-NEXT:    movl 9(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 9(%eax)
+; CHECK-AVX2-NEXT:    movzwl 13(%ecx), %edx
+; CHECK-AVX2-NEXT:    movw %dx, 13(%eax)
+; CHECK-AVX2-NEXT:    movb 15(%ecx), %cl
+; CHECK-AVX2-NEXT:    movb %cl, 15(%eax)
+; CHECK-AVX2-NEXT:    popl %esi
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_mixed_type:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %esi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    .cfi_offset %esi, -8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    cmpl $18, %edx
+; CHECK-AVX512-NEXT:    jl .LBB5_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %edx, %esi
+; CHECK-AVX512-NEXT:    sarl $31, %esi
+; CHECK-AVX512-NEXT:    movl %edx, (%ecx)
+; CHECK-AVX512-NEXT:    movl %esi, 4(%ecx)
+; CHECK-AVX512-NEXT:    movb %dl, 8(%ecx)
+; CHECK-AVX512-NEXT:  .LBB5_2: # %if.end
+; CHECK-AVX512-NEXT:    movl (%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, (%eax)
+; CHECK-AVX512-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX512-NEXT:    movb 8(%ecx), %dl
+; CHECK-AVX512-NEXT:    movb %dl, 8(%eax)
+; CHECK-AVX512-NEXT:    movl 9(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 9(%eax)
+; CHECK-AVX512-NEXT:    movzwl 13(%ecx), %edx
+; CHECK-AVX512-NEXT:    movw %dx, 13(%eax)
+; CHECK-AVX512-NEXT:    movb 15(%ecx), %cl
+; CHECK-AVX512-NEXT:    movb %cl, 15(%eax)
+; CHECK-AVX512-NEXT:    popl %esi
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %conv = sext i32 %x to i64
+  %a = getelementptr inbounds %struct.S3, %struct.S3* %s1, i64 0, i32 0
+  store i64 %conv, i64* %a, align 8
+  %conv1 = trunc i32 %x to i8
+  %b = getelementptr inbounds %struct.S3, %struct.S3* %s1, i64 0, i32 1
+  store i8 %conv1, i8* %b, align 8
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S3* %s2 to i8*
+  %1 = bitcast %struct.S3* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 8, i1 false)
+  ret void
+}
+%struct.S4 = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
+
+; Function Attrs: nounwind uwtable
+define void @test_multiple_blocks(%struct.S4* nocapture %s1, %struct.S4* nocapture %s2) local_unnamed_addr #0 {
+; CHECK-LABEL: test_multiple_blocks:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    movl $0, 4(%ecx)
+; CHECK-NEXT:    movl $0, 36(%ecx)
+; CHECK-NEXT:    movups 16(%ecx), %xmm0
+; CHECK-NEXT:    movups %xmm0, 16(%eax)
+; CHECK-NEXT:    movl 32(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 32(%eax)
+; CHECK-NEXT:    movl 36(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 36(%eax)
+; CHECK-NEXT:    movl 40(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 40(%eax)
+; CHECK-NEXT:    movl 44(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 44(%eax)
+; CHECK-NEXT:    movl (%ecx), %edx
+; CHECK-NEXT:    movl %edx, (%eax)
+; CHECK-NEXT:    movl 4(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 4(%eax)
+; CHECK-NEXT:    movl 8(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 8(%eax)
+; CHECK-NEXT:    movl 12(%ecx), %ecx
+; CHECK-NEXT:    movl %ecx, 12(%eax)
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_multiple_blocks:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    movl $0, 4(%ecx)
+; DISABLED-NEXT:    movl $0, 36(%ecx)
+; DISABLED-NEXT:    movups 16(%ecx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, 16(%eax)
+; DISABLED-NEXT:    movups 32(%ecx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, 32(%eax)
+; DISABLED-NEXT:    movups (%ecx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_multiple_blocks:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    movl $0, 4(%ecx)
+; CHECK-AVX2-NEXT:    movl $0, 36(%ecx)
+; CHECK-AVX2-NEXT:    movups 16(%ecx), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, 16(%eax)
+; CHECK-AVX2-NEXT:    movl 32(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 32(%eax)
+; CHECK-AVX2-NEXT:    movl 36(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 36(%eax)
+; CHECK-AVX2-NEXT:    movl 40(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 40(%eax)
+; CHECK-AVX2-NEXT:    movl 44(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 44(%eax)
+; CHECK-AVX2-NEXT:    movl (%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, (%eax)
+; CHECK-AVX2-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX2-NEXT:    movl 8(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 8(%eax)
+; CHECK-AVX2-NEXT:    movl 12(%ecx), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_multiple_blocks:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    movl $0, 4(%ecx)
+; CHECK-AVX512-NEXT:    movl $0, 36(%ecx)
+; CHECK-AVX512-NEXT:    vmovups 16(%ecx), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, 16(%eax)
+; CHECK-AVX512-NEXT:    movl 32(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 32(%eax)
+; CHECK-AVX512-NEXT:    movl 36(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 36(%eax)
+; CHECK-AVX512-NEXT:    movl 40(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 40(%eax)
+; CHECK-AVX512-NEXT:    movl 44(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 44(%eax)
+; CHECK-AVX512-NEXT:    movl (%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, (%eax)
+; CHECK-AVX512-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX512-NEXT:    vmovups 8(%ecx), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, 8(%eax)
+; CHECK-AVX512-NEXT:    movl 24(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 24(%eax)
+; CHECK-AVX512-NEXT:    movl 28(%ecx), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 28(%eax)
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %b = getelementptr inbounds %struct.S4, %struct.S4* %s1, i64 0, i32 1
+  store i32 0, i32* %b, align 4
+  %b3 = getelementptr inbounds %struct.S4, %struct.S4* %s1, i64 0, i32 9
+  store i32 0, i32* %b3, align 4
+  %0 = bitcast %struct.S4* %s2 to i8*
+  %1 = bitcast %struct.S4* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 48, i32 4, i1 false)
+  ret void
+}
+%struct.S5 = type { i16, i16, i16, i16, i16, i16, i16, i16 }
+
+; Function Attrs: nounwind uwtable
+define void @test_type16(%struct.S5* nocapture %s1, %struct.S5* nocapture %s2, i32 %x, %struct.S5* nocapture %s3, %struct.S5* nocapture readonly %s4) local_unnamed_addr #0 {
+; CHECK-LABEL: test_type16:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %edi
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    pushl %esi
+; CHECK-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-NEXT:    .cfi_offset %esi, -12
+; CHECK-NEXT:    .cfi_offset %edi, -8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    cmpl $18, %edi
+; CHECK-NEXT:    jl .LBB7_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movw %di, 2(%ecx)
+; CHECK-NEXT:  .LBB7_2: # %if.end
+; CHECK-NEXT:    movups (%esi), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%edx)
+; CHECK-NEXT:    movzwl (%ecx), %edx
+; CHECK-NEXT:    movw %dx, (%eax)
+; CHECK-NEXT:    movzwl 2(%ecx), %edx
+; CHECK-NEXT:    movw %dx, 2(%eax)
+; CHECK-NEXT:    movl 4(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 4(%eax)
+; CHECK-NEXT:    movl 8(%ecx), %edx
+; CHECK-NEXT:    movl %edx, 8(%eax)
+; CHECK-NEXT:    movl 12(%ecx), %ecx
+; CHECK-NEXT:    movl %ecx, 12(%eax)
+; CHECK-NEXT:    popl %esi
+; CHECK-NEXT:    popl %edi
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_type16:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %edi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    pushl %esi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 12
+; DISABLED-NEXT:    .cfi_offset %esi, -12
+; DISABLED-NEXT:    .cfi_offset %edi, -8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; DISABLED-NEXT:    cmpl $18, %edi
+; DISABLED-NEXT:    jl .LBB7_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movw %di, 2(%esi)
+; DISABLED-NEXT:  .LBB7_2: # %if.end
+; DISABLED-NEXT:    movups (%edx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%ecx)
+; DISABLED-NEXT:    movups (%esi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    popl %esi
+; DISABLED-NEXT:    popl %edi
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_type16:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %edi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    pushl %esi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX2-NEXT:    .cfi_offset %esi, -12
+; CHECK-AVX2-NEXT:    .cfi_offset %edi, -8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    cmpl $18, %edi
+; CHECK-AVX2-NEXT:    jl .LBB7_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movw %di, 2(%ecx)
+; CHECK-AVX2-NEXT:  .LBB7_2: # %if.end
+; CHECK-AVX2-NEXT:    movups (%esi), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, (%edx)
+; CHECK-AVX2-NEXT:    movzwl (%ecx), %edx
+; CHECK-AVX2-NEXT:    movw %dx, (%eax)
+; CHECK-AVX2-NEXT:    movzwl 2(%ecx), %edx
+; CHECK-AVX2-NEXT:    movw %dx, 2(%eax)
+; CHECK-AVX2-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX2-NEXT:    movl 8(%ecx), %edx
+; CHECK-AVX2-NEXT:    movl %edx, 8(%eax)
+; CHECK-AVX2-NEXT:    movl 12(%ecx), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX2-NEXT:    popl %esi
+; CHECK-AVX2-NEXT:    popl %edi
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_type16:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %edi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    pushl %esi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX512-NEXT:    .cfi_offset %esi, -12
+; CHECK-AVX512-NEXT:    .cfi_offset %edi, -8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    cmpl $18, %edi
+; CHECK-AVX512-NEXT:    jl .LBB7_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movw %di, 2(%ecx)
+; CHECK-AVX512-NEXT:  .LBB7_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%esi), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%edx)
+; CHECK-AVX512-NEXT:    movzwl (%ecx), %edx
+; CHECK-AVX512-NEXT:    movw %dx, (%eax)
+; CHECK-AVX512-NEXT:    movzwl 2(%ecx), %edx
+; CHECK-AVX512-NEXT:    movw %dx, 2(%eax)
+; CHECK-AVX512-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX512-NEXT:    movl 8(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 8(%eax)
+; CHECK-AVX512-NEXT:    movl 12(%ecx), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 12(%eax)
+; CHECK-AVX512-NEXT:    popl %esi
+; CHECK-AVX512-NEXT:    popl %edi
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %conv = trunc i32 %x to i16
+  %b = getelementptr inbounds %struct.S5, %struct.S5* %s1, i64 0, i32 1
+  store i16 %conv, i16* %b, align 2
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S5* %s3 to i8*
+  %1 = bitcast %struct.S5* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 2, i1 false)
+  %2 = bitcast %struct.S5* %s2 to i8*
+  %3 = bitcast %struct.S5* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 2, i1 false)
+  ret void
+}
+
+%struct.S6 = type { [4 x i32], i32, i32, i32, i32 }
+
+; Function Attrs: nounwind uwtable
+define void @test_stack(%struct.S6* noalias nocapture sret %agg.result, %struct.S6* byval nocapture readnone align 8 %s1, %struct.S6* byval nocapture align 8 %s2, i32 %x) local_unnamed_addr #0 {
+; CHECK-LABEL: test_stack:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %eax
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl %eax, {{[0-9]+}}(%esp)
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movups {{[0-9]+}}(%esp), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%eax)
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    movl %ecx, 16(%eax)
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    movl %ecx, 20(%eax)
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    movl %ecx, 24(%eax)
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    movl %ecx, 28(%eax)
+; CHECK-NEXT:    popl %ecx
+; CHECK-NEXT:    retl $4
+;
+; DISABLED-LABEL: test_stack:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %eax
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl %eax, {{[0-9]+}}(%esp)
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movups {{[0-9]+}}(%esp), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    movups {{[0-9]+}}(%esp), %xmm0
+; DISABLED-NEXT:    movups %xmm0, 16(%eax)
+; DISABLED-NEXT:    popl %ecx
+; DISABLED-NEXT:    retl $4
+;
+; CHECK-AVX2-LABEL: test_stack:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %eax
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl %eax, {{[0-9]+}}(%esp)
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movups {{[0-9]+}}(%esp), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, (%eax)
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 16(%eax)
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 20(%eax)
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 24(%eax)
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 28(%eax)
+; CHECK-AVX2-NEXT:    popl %ecx
+; CHECK-AVX2-NEXT:    retl $4
+;
+; CHECK-AVX512-LABEL: test_stack:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %eax
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl %eax, {{[0-9]+}}(%esp)
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 16(%eax)
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 20(%eax)
+; CHECK-AVX512-NEXT:    vmovups {{[0-9]+}}(%esp), %xmm0
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 24(%eax)
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%eax)
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 28(%eax)
+; CHECK-AVX512-NEXT:    popl %ecx
+; CHECK-AVX512-NEXT:    retl $4
+entry:
+  %s6.sroa.0.0..sroa_cast1 = bitcast %struct.S6* %s2 to i8*
+  %s6.sroa.3.0..sroa_idx4 = getelementptr inbounds %struct.S6, %struct.S6* %s2, i64 0, i32 3
+  store i32 %x, i32* %s6.sroa.3.0..sroa_idx4, align 8
+  %0 = bitcast %struct.S6* %agg.result to i8*
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* nonnull %s6.sroa.0.0..sroa_cast1, i64 32, i32 4, i1 false)
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define void @test_limit_all(%struct.S* %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3, %struct.S* nocapture readonly %s4, i32 %x2) local_unnamed_addr #0 {
+; CHECK-LABEL: test_limit_all:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %ebp
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    pushl %ebx
+; CHECK-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-NEXT:    pushl %edi
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    pushl %esi
+; CHECK-NEXT:    .cfi_def_cfa_offset 20
+; CHECK-NEXT:    subl $12, %esp
+; CHECK-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-NEXT:    .cfi_offset %esi, -20
+; CHECK-NEXT:    .cfi_offset %edi, -16
+; CHECK-NEXT:    .cfi_offset %ebx, -12
+; CHECK-NEXT:    .cfi_offset %ebp, -8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ebp
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl %eax, 12(%ebp)
+; CHECK-NEXT:    movl %ebp, (%esp)
+; CHECK-NEXT:    calll bar
+; CHECK-NEXT:    cmpl $18, %esi
+; CHECK-NEXT:    jl .LBB9_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %esi, 4(%ebp)
+; CHECK-NEXT:    movl %ebp, (%esp)
+; CHECK-NEXT:    calll bar
+; CHECK-NEXT:  .LBB9_2: # %if.end
+; CHECK-NEXT:    movups (%ebx), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%edi)
+; CHECK-NEXT:    movups (%ebp), %xmm0
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movups %xmm0, (%eax)
+; CHECK-NEXT:    addl $12, %esp
+; CHECK-NEXT:    popl %esi
+; CHECK-NEXT:    popl %edi
+; CHECK-NEXT:    popl %ebx
+; CHECK-NEXT:    popl %ebp
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_limit_all:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %ebp
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    pushl %ebx
+; DISABLED-NEXT:    .cfi_def_cfa_offset 12
+; DISABLED-NEXT:    pushl %edi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 16
+; DISABLED-NEXT:    pushl %esi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 20
+; DISABLED-NEXT:    subl $12, %esp
+; DISABLED-NEXT:    .cfi_def_cfa_offset 32
+; DISABLED-NEXT:    .cfi_offset %esi, -20
+; DISABLED-NEXT:    .cfi_offset %edi, -16
+; DISABLED-NEXT:    .cfi_offset %ebx, -12
+; DISABLED-NEXT:    .cfi_offset %ebp, -8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ebp
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl %eax, 12(%ebp)
+; DISABLED-NEXT:    movl %ebp, (%esp)
+; DISABLED-NEXT:    calll bar
+; DISABLED-NEXT:    cmpl $18, %esi
+; DISABLED-NEXT:    jl .LBB9_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %esi, 4(%ebp)
+; DISABLED-NEXT:    movl %ebp, (%esp)
+; DISABLED-NEXT:    calll bar
+; DISABLED-NEXT:  .LBB9_2: # %if.end
+; DISABLED-NEXT:    movups (%ebx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%edi)
+; DISABLED-NEXT:    movups (%ebp), %xmm0
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    addl $12, %esp
+; DISABLED-NEXT:    popl %esi
+; DISABLED-NEXT:    popl %edi
+; DISABLED-NEXT:    popl %ebx
+; DISABLED-NEXT:    popl %ebp
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_limit_all:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %ebp
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    pushl %ebx
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX2-NEXT:    pushl %edi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX2-NEXT:    pushl %esi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 20
+; CHECK-AVX2-NEXT:    subl $12, %esp
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-AVX2-NEXT:    .cfi_offset %esi, -20
+; CHECK-AVX2-NEXT:    .cfi_offset %edi, -16
+; CHECK-AVX2-NEXT:    .cfi_offset %ebx, -12
+; CHECK-AVX2-NEXT:    .cfi_offset %ebp, -8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ebp
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 12(%ebp)
+; CHECK-AVX2-NEXT:    movl %ebp, (%esp)
+; CHECK-AVX2-NEXT:    calll bar
+; CHECK-AVX2-NEXT:    cmpl $18, %esi
+; CHECK-AVX2-NEXT:    jl .LBB9_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %esi, 4(%ebp)
+; CHECK-AVX2-NEXT:    movl %ebp, (%esp)
+; CHECK-AVX2-NEXT:    calll bar
+; CHECK-AVX2-NEXT:  .LBB9_2: # %if.end
+; CHECK-AVX2-NEXT:    movups (%ebx), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, (%edi)
+; CHECK-AVX2-NEXT:    movups (%ebp), %xmm0
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movups %xmm0, (%eax)
+; CHECK-AVX2-NEXT:    addl $12, %esp
+; CHECK-AVX2-NEXT:    popl %esi
+; CHECK-AVX2-NEXT:    popl %edi
+; CHECK-AVX2-NEXT:    popl %ebx
+; CHECK-AVX2-NEXT:    popl %ebp
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_limit_all:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %ebp
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    pushl %ebx
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX512-NEXT:    pushl %edi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX512-NEXT:    pushl %esi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 20
+; CHECK-AVX512-NEXT:    subl $12, %esp
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-AVX512-NEXT:    .cfi_offset %esi, -20
+; CHECK-AVX512-NEXT:    .cfi_offset %edi, -16
+; CHECK-AVX512-NEXT:    .cfi_offset %ebx, -12
+; CHECK-AVX512-NEXT:    .cfi_offset %ebp, -8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ebp
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 12(%ebp)
+; CHECK-AVX512-NEXT:    movl %ebp, (%esp)
+; CHECK-AVX512-NEXT:    calll bar
+; CHECK-AVX512-NEXT:    cmpl $18, %esi
+; CHECK-AVX512-NEXT:    jl .LBB9_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %esi, 4(%ebp)
+; CHECK-AVX512-NEXT:    movl %ebp, (%esp)
+; CHECK-AVX512-NEXT:    calll bar
+; CHECK-AVX512-NEXT:  .LBB9_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%ebx), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%edi)
+; CHECK-AVX512-NEXT:    vmovups (%ebp), %xmm0
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%eax)
+; CHECK-AVX512-NEXT:    addl $12, %esp
+; CHECK-AVX512-NEXT:    popl %esi
+; CHECK-AVX512-NEXT:    popl %edi
+; CHECK-AVX512-NEXT:    popl %ebx
+; CHECK-AVX512-NEXT:    popl %ebp
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %d = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 3
+  store i32 %x2, i32* %d, align 4
+  tail call void @bar(%struct.S* %s1) #3
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 1
+  store i32 %x, i32* %b, align 4
+  tail call void @bar(%struct.S* nonnull %s1) #3
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S* %s3 to i8*
+  %1 = bitcast %struct.S* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  %2 = bitcast %struct.S* %s2 to i8*
+  %3 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 4, i1 false)
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define void @test_limit_one_pred(%struct.S* %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3, %struct.S* nocapture readonly %s4, i32 %x2) local_unnamed_addr #0 {
+; CHECK-LABEL: test_limit_one_pred:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %ebp
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    pushl %ebx
+; CHECK-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-NEXT:    pushl %edi
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    pushl %esi
+; CHECK-NEXT:    .cfi_def_cfa_offset 20
+; CHECK-NEXT:    subl $12, %esp
+; CHECK-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-NEXT:    .cfi_offset %esi, -20
+; CHECK-NEXT:    .cfi_offset %edi, -16
+; CHECK-NEXT:    .cfi_offset %ebx, -12
+; CHECK-NEXT:    .cfi_offset %ebp, -8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ebp
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    movl %ecx, 12(%edi)
+; CHECK-NEXT:    cmpl $18, %eax
+; CHECK-NEXT:    jl .LBB10_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %eax, 4(%edi)
+; CHECK-NEXT:    movl %edi, (%esp)
+; CHECK-NEXT:    calll bar
+; CHECK-NEXT:  .LBB10_2: # %if.end
+; CHECK-NEXT:    movups (%ebp), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%ebx)
+; CHECK-NEXT:    movl (%edi), %eax
+; CHECK-NEXT:    movl %eax, (%esi)
+; CHECK-NEXT:    movl 4(%edi), %eax
+; CHECK-NEXT:    movl %eax, 4(%esi)
+; CHECK-NEXT:    movl 8(%edi), %eax
+; CHECK-NEXT:    movl %eax, 8(%esi)
+; CHECK-NEXT:    movl 12(%edi), %eax
+; CHECK-NEXT:    movl %eax, 12(%esi)
+; CHECK-NEXT:    addl $12, %esp
+; CHECK-NEXT:    popl %esi
+; CHECK-NEXT:    popl %edi
+; CHECK-NEXT:    popl %ebx
+; CHECK-NEXT:    popl %ebp
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_limit_one_pred:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %ebp
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    pushl %ebx
+; DISABLED-NEXT:    .cfi_def_cfa_offset 12
+; DISABLED-NEXT:    pushl %edi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 16
+; DISABLED-NEXT:    pushl %esi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 20
+; DISABLED-NEXT:    subl $12, %esp
+; DISABLED-NEXT:    .cfi_def_cfa_offset 32
+; DISABLED-NEXT:    .cfi_offset %esi, -20
+; DISABLED-NEXT:    .cfi_offset %edi, -16
+; DISABLED-NEXT:    .cfi_offset %ebx, -12
+; DISABLED-NEXT:    .cfi_offset %ebp, -8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ebp
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    movl %ecx, 12(%ebp)
+; DISABLED-NEXT:    cmpl $18, %eax
+; DISABLED-NEXT:    jl .LBB10_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %eax, 4(%ebp)
+; DISABLED-NEXT:    movl %ebp, (%esp)
+; DISABLED-NEXT:    calll bar
+; DISABLED-NEXT:  .LBB10_2: # %if.end
+; DISABLED-NEXT:    movups (%ebx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%edi)
+; DISABLED-NEXT:    movups (%ebp), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%esi)
+; DISABLED-NEXT:    addl $12, %esp
+; DISABLED-NEXT:    popl %esi
+; DISABLED-NEXT:    popl %edi
+; DISABLED-NEXT:    popl %ebx
+; DISABLED-NEXT:    popl %ebp
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_limit_one_pred:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %ebp
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    pushl %ebx
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX2-NEXT:    pushl %edi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX2-NEXT:    pushl %esi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 20
+; CHECK-AVX2-NEXT:    subl $12, %esp
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-AVX2-NEXT:    .cfi_offset %esi, -20
+; CHECK-AVX2-NEXT:    .cfi_offset %edi, -16
+; CHECK-AVX2-NEXT:    .cfi_offset %ebx, -12
+; CHECK-AVX2-NEXT:    .cfi_offset %ebp, -8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ebp
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    movl %ecx, 12(%edi)
+; CHECK-AVX2-NEXT:    cmpl $18, %eax
+; CHECK-AVX2-NEXT:    jl .LBB10_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %eax, 4(%edi)
+; CHECK-AVX2-NEXT:    movl %edi, (%esp)
+; CHECK-AVX2-NEXT:    calll bar
+; CHECK-AVX2-NEXT:  .LBB10_2: # %if.end
+; CHECK-AVX2-NEXT:    movups (%ebp), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, (%ebx)
+; CHECK-AVX2-NEXT:    movl (%edi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, (%esi)
+; CHECK-AVX2-NEXT:    movl 4(%edi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 4(%esi)
+; CHECK-AVX2-NEXT:    movl 8(%edi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 8(%esi)
+; CHECK-AVX2-NEXT:    movl 12(%edi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 12(%esi)
+; CHECK-AVX2-NEXT:    addl $12, %esp
+; CHECK-AVX2-NEXT:    popl %esi
+; CHECK-AVX2-NEXT:    popl %edi
+; CHECK-AVX2-NEXT:    popl %ebx
+; CHECK-AVX2-NEXT:    popl %ebp
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_limit_one_pred:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %ebp
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    pushl %ebx
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX512-NEXT:    pushl %edi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX512-NEXT:    pushl %esi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 20
+; CHECK-AVX512-NEXT:    subl $12, %esp
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-AVX512-NEXT:    .cfi_offset %esi, -20
+; CHECK-AVX512-NEXT:    .cfi_offset %edi, -16
+; CHECK-AVX512-NEXT:    .cfi_offset %ebx, -12
+; CHECK-AVX512-NEXT:    .cfi_offset %ebp, -8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ebp
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ebx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 12(%edi)
+; CHECK-AVX512-NEXT:    cmpl $18, %eax
+; CHECK-AVX512-NEXT:    jl .LBB10_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %eax, 4(%edi)
+; CHECK-AVX512-NEXT:    movl %edi, (%esp)
+; CHECK-AVX512-NEXT:    calll bar
+; CHECK-AVX512-NEXT:  .LBB10_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%ebp), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%ebx)
+; CHECK-AVX512-NEXT:    movl (%edi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, (%esi)
+; CHECK-AVX512-NEXT:    movl 4(%edi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 4(%esi)
+; CHECK-AVX512-NEXT:    movl 8(%edi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 8(%esi)
+; CHECK-AVX512-NEXT:    movl 12(%edi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 12(%esi)
+; CHECK-AVX512-NEXT:    addl $12, %esp
+; CHECK-AVX512-NEXT:    popl %esi
+; CHECK-AVX512-NEXT:    popl %edi
+; CHECK-AVX512-NEXT:    popl %ebx
+; CHECK-AVX512-NEXT:    popl %ebp
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %d = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 3
+  store i32 %x2, i32* %d, align 4
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 1
+  store i32 %x, i32* %b, align 4
+  tail call void @bar(%struct.S* nonnull %s1) #3
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S* %s3 to i8*
+  %1 = bitcast %struct.S* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  %2 = bitcast %struct.S* %s2 to i8*
+  %3 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 4, i1 false)
+  ret void
+}
+
+
+declare void @bar(%struct.S*) local_unnamed_addr #1
+
+
+; Function Attrs: argmemonly nounwind
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1) #1
+
+attributes #0 = { nounwind uwtable "target-cpu"="x86-64" }
+
+%struct.S7 = type { float, float, float , float, float, float, float, float }
+
+; Function Attrs: nounwind uwtable
+define void @test_conditional_block_float(%struct.S7* nocapture %s1, %struct.S7* nocapture %s2, i32 %x, %struct.S7* nocapture %s3, %struct.S7* nocapture readonly %s4, float %y) local_unnamed_addr #0 {
+; CHECK-LABEL: test_conditional_block_float:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %ebx
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    pushl %edi
+; CHECK-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-NEXT:    pushl %esi
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    .cfi_offset %esi, -16
+; CHECK-NEXT:    .cfi_offset %edi, -12
+; CHECK-NEXT:    .cfi_offset %ebx, -8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    cmpl $18, {{[0-9]+}}(%esp)
+; CHECK-NEXT:    jl .LBB11_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl $1065353216, 4(%ecx) # imm = 0x3F800000
+; CHECK-NEXT:  .LBB11_2: # %if.end
+; CHECK-NEXT:    movups (%esi), %xmm0
+; CHECK-NEXT:    movups 16(%esi), %xmm1
+; CHECK-NEXT:    movups %xmm1, 16(%edx)
+; CHECK-NEXT:    movups %xmm0, (%edx)
+; CHECK-NEXT:    movl (%ecx), %edx
+; CHECK-NEXT:    movl 4(%ecx), %esi
+; CHECK-NEXT:    movl 8(%ecx), %edi
+; CHECK-NEXT:    movl 12(%ecx), %ebx
+; CHECK-NEXT:    movups 16(%ecx), %xmm0
+; CHECK-NEXT:    movups %xmm0, 16(%eax)
+; CHECK-NEXT:    movl %edx, (%eax)
+; CHECK-NEXT:    movl %esi, 4(%eax)
+; CHECK-NEXT:    movl %edi, 8(%eax)
+; CHECK-NEXT:    movl %ebx, 12(%eax)
+; CHECK-NEXT:    popl %esi
+; CHECK-NEXT:    popl %edi
+; CHECK-NEXT:    popl %ebx
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_conditional_block_float:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %esi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    .cfi_offset %esi, -8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    cmpl $18, {{[0-9]+}}(%esp)
+; DISABLED-NEXT:    jl .LBB11_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl $1065353216, 4(%ecx) # imm = 0x3F800000
+; DISABLED-NEXT:  .LBB11_2: # %if.end
+; DISABLED-NEXT:    movups (%esi), %xmm0
+; DISABLED-NEXT:    movups 16(%esi), %xmm1
+; DISABLED-NEXT:    movups %xmm1, 16(%edx)
+; DISABLED-NEXT:    movups %xmm0, (%edx)
+; DISABLED-NEXT:    movups (%ecx), %xmm0
+; DISABLED-NEXT:    movups 16(%ecx), %xmm1
+; DISABLED-NEXT:    movups %xmm1, 16(%eax)
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    popl %esi
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_conditional_block_float:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %ebx
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    pushl %edi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX2-NEXT:    pushl %esi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX2-NEXT:    .cfi_offset %esi, -16
+; CHECK-AVX2-NEXT:    .cfi_offset %edi, -12
+; CHECK-AVX2-NEXT:    .cfi_offset %ebx, -8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    cmpl $18, {{[0-9]+}}(%esp)
+; CHECK-AVX2-NEXT:    jl .LBB11_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl $1065353216, 4(%ecx) # imm = 0x3F800000
+; CHECK-AVX2-NEXT:  .LBB11_2: # %if.end
+; CHECK-AVX2-NEXT:    movups (%esi), %xmm0
+; CHECK-AVX2-NEXT:    movups 16(%esi), %xmm1
+; CHECK-AVX2-NEXT:    movups %xmm1, 16(%edx)
+; CHECK-AVX2-NEXT:    movups %xmm0, (%edx)
+; CHECK-AVX2-NEXT:    movl (%ecx), %edx
+; CHECK-AVX2-NEXT:    movl 4(%ecx), %esi
+; CHECK-AVX2-NEXT:    movl 8(%ecx), %edi
+; CHECK-AVX2-NEXT:    movl 12(%ecx), %ebx
+; CHECK-AVX2-NEXT:    movups 16(%ecx), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, 16(%eax)
+; CHECK-AVX2-NEXT:    movl %edx, (%eax)
+; CHECK-AVX2-NEXT:    movl %esi, 4(%eax)
+; CHECK-AVX2-NEXT:    movl %edi, 8(%eax)
+; CHECK-AVX2-NEXT:    movl %ebx, 12(%eax)
+; CHECK-AVX2-NEXT:    popl %esi
+; CHECK-AVX2-NEXT:    popl %edi
+; CHECK-AVX2-NEXT:    popl %ebx
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_conditional_block_float:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %esi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    .cfi_offset %esi, -8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    cmpl $18, {{[0-9]+}}(%esp)
+; CHECK-AVX512-NEXT:    jl .LBB11_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl $1065353216, 4(%ecx) # imm = 0x3F800000
+; CHECK-AVX512-NEXT:  .LBB11_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%esi), %ymm0
+; CHECK-AVX512-NEXT:    vmovups %ymm0, (%edx)
+; CHECK-AVX512-NEXT:    movl (%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, (%eax)
+; CHECK-AVX512-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX512-NEXT:    vmovups 8(%ecx), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, 8(%eax)
+; CHECK-AVX512-NEXT:    movl 24(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 24(%eax)
+; CHECK-AVX512-NEXT:    movl 28(%ecx), %ecx
+; CHECK-AVX512-NEXT:    movl %ecx, 28(%eax)
+; CHECK-AVX512-NEXT:    popl %esi
+; CHECK-AVX512-NEXT:    vzeroupper
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S7, %struct.S7* %s1, i64 0, i32 1
+  store float 1.0, float* %b, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S7* %s3 to i8*
+  %1 = bitcast %struct.S7* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 32, i32 4, i1 false)
+  %2 = bitcast %struct.S7* %s2 to i8*
+  %3 = bitcast %struct.S7* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 32, i32 4, i1 false)
+  ret void
+}
+
+%struct.S8 = type { i64, i64, i64, i64, i64, i64 }
+
+; Function Attrs: nounwind uwtable
+define void @test_conditional_block_ymm(%struct.S8* nocapture %s1, %struct.S8* nocapture %s2, i32 %x, %struct.S8* nocapture %s3, %struct.S8* nocapture readonly %s4) local_unnamed_addr #0 {
+; CHECK-LABEL: test_conditional_block_ymm:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushl %ebx
+; CHECK-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-NEXT:    pushl %edi
+; CHECK-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-NEXT:    pushl %esi
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    .cfi_offset %esi, -16
+; CHECK-NEXT:    .cfi_offset %edi, -12
+; CHECK-NEXT:    .cfi_offset %ebx, -8
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-NEXT:    cmpl $18, {{[0-9]+}}(%esp)
+; CHECK-NEXT:    jl .LBB12_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl $0, 12(%ecx)
+; CHECK-NEXT:    movl $1, 8(%ecx)
+; CHECK-NEXT:  .LBB12_2: # %if.end
+; CHECK-NEXT:    movups (%esi), %xmm0
+; CHECK-NEXT:    movups 16(%esi), %xmm1
+; CHECK-NEXT:    movups %xmm1, 16(%edx)
+; CHECK-NEXT:    movups %xmm0, (%edx)
+; CHECK-NEXT:    movl (%ecx), %edx
+; CHECK-NEXT:    movl 4(%ecx), %esi
+; CHECK-NEXT:    movl 8(%ecx), %edi
+; CHECK-NEXT:    movl 12(%ecx), %ebx
+; CHECK-NEXT:    movups 16(%ecx), %xmm0
+; CHECK-NEXT:    movups %xmm0, 16(%eax)
+; CHECK-NEXT:    movl %edx, (%eax)
+; CHECK-NEXT:    movl %esi, 4(%eax)
+; CHECK-NEXT:    movl %edi, 8(%eax)
+; CHECK-NEXT:    movl %ebx, 12(%eax)
+; CHECK-NEXT:    popl %esi
+; CHECK-NEXT:    popl %edi
+; CHECK-NEXT:    popl %ebx
+; CHECK-NEXT:    retl
+;
+; DISABLED-LABEL: test_conditional_block_ymm:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushl %esi
+; DISABLED-NEXT:    .cfi_def_cfa_offset 8
+; DISABLED-NEXT:    .cfi_offset %esi, -8
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; DISABLED-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; DISABLED-NEXT:    cmpl $18, {{[0-9]+}}(%esp)
+; DISABLED-NEXT:    jl .LBB12_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl $0, 12(%ecx)
+; DISABLED-NEXT:    movl $1, 8(%ecx)
+; DISABLED-NEXT:  .LBB12_2: # %if.end
+; DISABLED-NEXT:    movups (%esi), %xmm0
+; DISABLED-NEXT:    movups 16(%esi), %xmm1
+; DISABLED-NEXT:    movups %xmm1, 16(%edx)
+; DISABLED-NEXT:    movups %xmm0, (%edx)
+; DISABLED-NEXT:    movups (%ecx), %xmm0
+; DISABLED-NEXT:    movups 16(%ecx), %xmm1
+; DISABLED-NEXT:    movups %xmm1, 16(%eax)
+; DISABLED-NEXT:    movups %xmm0, (%eax)
+; DISABLED-NEXT:    popl %esi
+; DISABLED-NEXT:    retl
+;
+; CHECK-AVX2-LABEL: test_conditional_block_ymm:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushl %ebx
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX2-NEXT:    pushl %edi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 12
+; CHECK-AVX2-NEXT:    pushl %esi
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX2-NEXT:    .cfi_offset %esi, -16
+; CHECK-AVX2-NEXT:    .cfi_offset %edi, -12
+; CHECK-AVX2-NEXT:    .cfi_offset %ebx, -8
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX2-NEXT:    cmpl $18, {{[0-9]+}}(%esp)
+; CHECK-AVX2-NEXT:    jl .LBB12_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl $0, 12(%ecx)
+; CHECK-AVX2-NEXT:    movl $1, 8(%ecx)
+; CHECK-AVX2-NEXT:  .LBB12_2: # %if.end
+; CHECK-AVX2-NEXT:    movups (%esi), %xmm0
+; CHECK-AVX2-NEXT:    movups 16(%esi), %xmm1
+; CHECK-AVX2-NEXT:    movups %xmm1, 16(%edx)
+; CHECK-AVX2-NEXT:    movups %xmm0, (%edx)
+; CHECK-AVX2-NEXT:    movl (%ecx), %edx
+; CHECK-AVX2-NEXT:    movl 4(%ecx), %esi
+; CHECK-AVX2-NEXT:    movl 8(%ecx), %edi
+; CHECK-AVX2-NEXT:    movl 12(%ecx), %ebx
+; CHECK-AVX2-NEXT:    movups 16(%ecx), %xmm0
+; CHECK-AVX2-NEXT:    movups %xmm0, 16(%eax)
+; CHECK-AVX2-NEXT:    movl %edx, (%eax)
+; CHECK-AVX2-NEXT:    movl %esi, 4(%eax)
+; CHECK-AVX2-NEXT:    movl %edi, 8(%eax)
+; CHECK-AVX2-NEXT:    movl %ebx, 12(%eax)
+; CHECK-AVX2-NEXT:    popl %esi
+; CHECK-AVX2-NEXT:    popl %edi
+; CHECK-AVX2-NEXT:    popl %ebx
+; CHECK-AVX2-NEXT:    retl
+;
+; CHECK-AVX512-LABEL: test_conditional_block_ymm:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushl %esi
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 8
+; CHECK-AVX512-NEXT:    .cfi_offset %esi, -8
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %esi
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %edx
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %eax
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%esp), %ecx
+; CHECK-AVX512-NEXT:    cmpl $18, {{[0-9]+}}(%esp)
+; CHECK-AVX512-NEXT:    jl .LBB12_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl $0, 12(%ecx)
+; CHECK-AVX512-NEXT:    movl $1, 8(%ecx)
+; CHECK-AVX512-NEXT:  .LBB12_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%esi), %ymm0
+; CHECK-AVX512-NEXT:    vmovups %ymm0, (%edx)
+; CHECK-AVX512-NEXT:    movl (%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, (%eax)
+; CHECK-AVX512-NEXT:    movl 4(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 4(%eax)
+; CHECK-AVX512-NEXT:    movl 8(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 8(%eax)
+; CHECK-AVX512-NEXT:    movl 12(%ecx), %edx
+; CHECK-AVX512-NEXT:    movl %edx, 12(%eax)
+; CHECK-AVX512-NEXT:    vmovups 16(%ecx), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, 16(%eax)
+; CHECK-AVX512-NEXT:    popl %esi
+; CHECK-AVX512-NEXT:    vzeroupper
+; CHECK-AVX512-NEXT:    retl
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S8, %struct.S8* %s1, i64 0, i32 1
+  store i64 1, i64* %b, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S8* %s3 to i8*
+  %1 = bitcast %struct.S8* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 32, i32 4, i1 false)
+  %2 = bitcast %struct.S8* %s2 to i8*
+  %3 = bitcast %struct.S8* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 32, i32 4, i1 false)
+  ret void
+}
+

Added: llvm/trunk/test/CodeGen/X86/fixup-sfb.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/X86/fixup-sfb.ll?rev=325128&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/X86/fixup-sfb.ll (added)
+++ llvm/trunk/test/CodeGen/X86/fixup-sfb.ll Wed Feb 14 06:58:53 2018
@@ -0,0 +1,1378 @@
+; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py
+; RUN: llc < %s -mtriple=x86_64-linux | FileCheck %s -check-prefix=CHECK
+; RUN: llc < %s -mtriple=x86_64-linux --disable-fixup-SFB | FileCheck %s --check-prefix=DISABLED
+; RUN: llc < %s -mtriple=x86_64-linux -mcpu=core-avx2 | FileCheck %s -check-prefix=CHECK-AVX2
+; RUN: llc < %s -mtriple=x86_64-linux -mcpu=skx | FileCheck %s -check-prefix=CHECK-AVX512
+
+; RUN: llc < %s -mtriple=i686-linux 
+; RUN: llc < %s -mtriple=i686-linux --disable-fixup-SFB 
+; RUN: llc < %s -mtriple=i686-linux -mattr sse4 
+; RUN: llc < %s -mtriple=i686-linux -mattr avx512
+
+target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
+target triple = "x86_64-unknown-linux-gnu"
+
+%struct.S = type { i32, i32, i32, i32 }
+
+; Function Attrs: nounwind uwtable
+define void @test_conditional_block(%struct.S* nocapture %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3, %struct.S* nocapture readonly %s4) local_unnamed_addr #0 {
+; CHECK-LABEL: test_conditional_block:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    cmpl $18, %edx
+; CHECK-NEXT:    jl .LBB0_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %edx, 4(%rdi)
+; CHECK-NEXT:  .LBB0_2: # %if.end
+; CHECK-NEXT:    movups (%r8), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%rcx)
+; CHECK-NEXT:    movl (%rdi), %eax
+; CHECK-NEXT:    movl %eax, (%rsi)
+; CHECK-NEXT:    movl 4(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 4(%rsi)
+; CHECK-NEXT:    movq 8(%rdi), %rax
+; CHECK-NEXT:    movq %rax, 8(%rsi)
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_conditional_block:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB0_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %edx, 4(%rdi)
+; DISABLED-NEXT:  .LBB0_2: # %if.end
+; DISABLED-NEXT:    movups (%r8), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rcx)
+; DISABLED-NEXT:    movups (%rdi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rsi)
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_conditional_block:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    cmpl $18, %edx
+; CHECK-AVX2-NEXT:    jl .LBB0_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %edx, 4(%rdi)
+; CHECK-AVX2-NEXT:  .LBB0_2: # %if.end
+; CHECK-AVX2-NEXT:    vmovups (%r8), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, (%rcx)
+; CHECK-AVX2-NEXT:    movl (%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, (%rsi)
+; CHECK-AVX2-NEXT:    movl 4(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 4(%rsi)
+; CHECK-AVX2-NEXT:    movq 8(%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, 8(%rsi)
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_conditional_block:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    cmpl $18, %edx
+; CHECK-AVX512-NEXT:    jl .LBB0_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %edx, 4(%rdi)
+; CHECK-AVX512-NEXT:  .LBB0_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%r8), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%rcx)
+; CHECK-AVX512-NEXT:    movl (%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, (%rsi)
+; CHECK-AVX512-NEXT:    movl 4(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 4(%rsi)
+; CHECK-AVX512-NEXT:    movq 8(%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, 8(%rsi)
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 1
+  store i32 %x, i32* %b, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S* %s3 to i8*
+  %1 = bitcast %struct.S* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  %2 = bitcast %struct.S* %s2 to i8*
+  %3 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 4, i1 false)
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define void @test_imm_store(%struct.S* nocapture %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3) local_unnamed_addr #0 {
+; CHECK-LABEL: test_imm_store:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    movl $0, (%rdi)
+; CHECK-NEXT:    movl $1, (%rcx)
+; CHECK-NEXT:    movl (%rdi), %eax
+; CHECK-NEXT:    movl %eax, (%rsi)
+; CHECK-NEXT:    movq 4(%rdi), %rax
+; CHECK-NEXT:    movq %rax, 4(%rsi)
+; CHECK-NEXT:    movl 12(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 12(%rsi)
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_imm_store:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    movl $0, (%rdi)
+; DISABLED-NEXT:    movl $1, (%rcx)
+; DISABLED-NEXT:    movups (%rdi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rsi)
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_imm_store:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    movl $0, (%rdi)
+; CHECK-AVX2-NEXT:    movl $1, (%rcx)
+; CHECK-AVX2-NEXT:    movl (%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, (%rsi)
+; CHECK-AVX2-NEXT:    movq 4(%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, 4(%rsi)
+; CHECK-AVX2-NEXT:    movl 12(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 12(%rsi)
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_imm_store:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    movl $0, (%rdi)
+; CHECK-AVX512-NEXT:    movl $1, (%rcx)
+; CHECK-AVX512-NEXT:    movl (%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, (%rsi)
+; CHECK-AVX512-NEXT:    movq 4(%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, 4(%rsi)
+; CHECK-AVX512-NEXT:    movl 12(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 12(%rsi)
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %a = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 0
+  store i32 0, i32* %a, align 4
+  %a1 = getelementptr inbounds %struct.S, %struct.S* %s3, i64 0, i32 0
+  store i32 1, i32* %a1, align 4
+  %0 = bitcast %struct.S* %s2 to i8*
+  %1 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define void @test_nondirect_br(%struct.S* nocapture %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3, %struct.S* nocapture readonly %s4, i32 %x2) local_unnamed_addr #0 {
+; CHECK-LABEL: test_nondirect_br:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    cmpl $18, %edx
+; CHECK-NEXT:    jl .LBB2_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %edx, 4(%rdi)
+; CHECK-NEXT:  .LBB2_2: # %if.end
+; CHECK-NEXT:    cmpl $14, %r9d
+; CHECK-NEXT:    jl .LBB2_4
+; CHECK-NEXT:  # %bb.3: # %if.then2
+; CHECK-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-NEXT:  .LBB2_4: # %if.end3
+; CHECK-NEXT:    movups (%r8), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%rcx)
+; CHECK-NEXT:    movq (%rdi), %rax
+; CHECK-NEXT:    movq %rax, (%rsi)
+; CHECK-NEXT:    movl 8(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 8(%rsi)
+; CHECK-NEXT:    movl 12(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 12(%rsi)
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_nondirect_br:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB2_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %edx, 4(%rdi)
+; DISABLED-NEXT:  .LBB2_2: # %if.end
+; DISABLED-NEXT:    cmpl $14, %r9d
+; DISABLED-NEXT:    jl .LBB2_4
+; DISABLED-NEXT:  # %bb.3: # %if.then2
+; DISABLED-NEXT:    movl %r9d, 12(%rdi)
+; DISABLED-NEXT:  .LBB2_4: # %if.end3
+; DISABLED-NEXT:    movups (%r8), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rcx)
+; DISABLED-NEXT:    movups (%rdi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rsi)
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_nondirect_br:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    cmpl $18, %edx
+; CHECK-AVX2-NEXT:    jl .LBB2_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %edx, 4(%rdi)
+; CHECK-AVX2-NEXT:  .LBB2_2: # %if.end
+; CHECK-AVX2-NEXT:    cmpl $14, %r9d
+; CHECK-AVX2-NEXT:    jl .LBB2_4
+; CHECK-AVX2-NEXT:  # %bb.3: # %if.then2
+; CHECK-AVX2-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-AVX2-NEXT:  .LBB2_4: # %if.end3
+; CHECK-AVX2-NEXT:    vmovups (%r8), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, (%rcx)
+; CHECK-AVX2-NEXT:    movq (%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, (%rsi)
+; CHECK-AVX2-NEXT:    movl 8(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 8(%rsi)
+; CHECK-AVX2-NEXT:    movl 12(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 12(%rsi)
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_nondirect_br:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    cmpl $18, %edx
+; CHECK-AVX512-NEXT:    jl .LBB2_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %edx, 4(%rdi)
+; CHECK-AVX512-NEXT:  .LBB2_2: # %if.end
+; CHECK-AVX512-NEXT:    cmpl $14, %r9d
+; CHECK-AVX512-NEXT:    jl .LBB2_4
+; CHECK-AVX512-NEXT:  # %bb.3: # %if.then2
+; CHECK-AVX512-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-AVX512-NEXT:  .LBB2_4: # %if.end3
+; CHECK-AVX512-NEXT:    vmovups (%r8), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%rcx)
+; CHECK-AVX512-NEXT:    movq (%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, (%rsi)
+; CHECK-AVX512-NEXT:    movl 8(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 8(%rsi)
+; CHECK-AVX512-NEXT:    movl 12(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 12(%rsi)
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 1
+  store i32 %x, i32* %b, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %cmp1 = icmp sgt i32 %x2, 13
+  br i1 %cmp1, label %if.then2, label %if.end3
+
+if.then2:                                         ; preds = %if.end
+  %d = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 3
+  store i32 %x2, i32* %d, align 4
+  br label %if.end3
+
+if.end3:                                          ; preds = %if.then2, %if.end
+  %0 = bitcast %struct.S* %s3 to i8*
+  %1 = bitcast %struct.S* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  %2 = bitcast %struct.S* %s2 to i8*
+  %3 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 4, i1 false)
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define void @test_2preds_block(%struct.S* nocapture %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3, %struct.S* nocapture readonly %s4, i32 %x2) local_unnamed_addr #0 {
+; CHECK-LABEL: test_2preds_block:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-NEXT:    cmpl $18, %edx
+; CHECK-NEXT:    jl .LBB3_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %edx, 4(%rdi)
+; CHECK-NEXT:  .LBB3_2: # %if.end
+; CHECK-NEXT:    movups (%r8), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%rcx)
+; CHECK-NEXT:    movl (%rdi), %eax
+; CHECK-NEXT:    movl %eax, (%rsi)
+; CHECK-NEXT:    movl 4(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 4(%rsi)
+; CHECK-NEXT:    movl 8(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 8(%rsi)
+; CHECK-NEXT:    movl 12(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 12(%rsi)
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_2preds_block:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    movl %r9d, 12(%rdi)
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB3_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %edx, 4(%rdi)
+; DISABLED-NEXT:  .LBB3_2: # %if.end
+; DISABLED-NEXT:    movups (%r8), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rcx)
+; DISABLED-NEXT:    movups (%rdi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rsi)
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_2preds_block:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-AVX2-NEXT:    cmpl $18, %edx
+; CHECK-AVX2-NEXT:    jl .LBB3_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %edx, 4(%rdi)
+; CHECK-AVX2-NEXT:  .LBB3_2: # %if.end
+; CHECK-AVX2-NEXT:    vmovups (%r8), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, (%rcx)
+; CHECK-AVX2-NEXT:    movl (%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, (%rsi)
+; CHECK-AVX2-NEXT:    movl 4(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 4(%rsi)
+; CHECK-AVX2-NEXT:    movl 8(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 8(%rsi)
+; CHECK-AVX2-NEXT:    movl 12(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 12(%rsi)
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_2preds_block:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-AVX512-NEXT:    cmpl $18, %edx
+; CHECK-AVX512-NEXT:    jl .LBB3_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %edx, 4(%rdi)
+; CHECK-AVX512-NEXT:  .LBB3_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%r8), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%rcx)
+; CHECK-AVX512-NEXT:    movl (%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, (%rsi)
+; CHECK-AVX512-NEXT:    movl 4(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 4(%rsi)
+; CHECK-AVX512-NEXT:    movl 8(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 8(%rsi)
+; CHECK-AVX512-NEXT:    movl 12(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 12(%rsi)
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %d = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 3
+  store i32 %x2, i32* %d, align 4
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 1
+  store i32 %x, i32* %b, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S* %s3 to i8*
+  %1 = bitcast %struct.S* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  %2 = bitcast %struct.S* %s2 to i8*
+  %3 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 4, i1 false)
+  ret void
+}
+%struct.S2 = type { i64, i64 }
+
+; Function Attrs: nounwind uwtable
+define void @test_type64(%struct.S2* nocapture %s1, %struct.S2* nocapture %s2, i32 %x, %struct.S2* nocapture %s3, %struct.S2* nocapture readonly %s4) local_unnamed_addr #0 {
+; CHECK-LABEL: test_type64:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    cmpl $18, %edx
+; CHECK-NEXT:    jl .LBB4_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movslq %edx, %rax
+; CHECK-NEXT:    movq %rax, 8(%rdi)
+; CHECK-NEXT:  .LBB4_2: # %if.end
+; CHECK-NEXT:    movups (%r8), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%rcx)
+; CHECK-NEXT:    movq (%rdi), %rax
+; CHECK-NEXT:    movq %rax, (%rsi)
+; CHECK-NEXT:    movq 8(%rdi), %rax
+; CHECK-NEXT:    movq %rax, 8(%rsi)
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_type64:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB4_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movslq %edx, %rax
+; DISABLED-NEXT:    movq %rax, 8(%rdi)
+; DISABLED-NEXT:  .LBB4_2: # %if.end
+; DISABLED-NEXT:    movups (%r8), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rcx)
+; DISABLED-NEXT:    movups (%rdi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rsi)
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_type64:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    cmpl $18, %edx
+; CHECK-AVX2-NEXT:    jl .LBB4_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movslq %edx, %rax
+; CHECK-AVX2-NEXT:    movq %rax, 8(%rdi)
+; CHECK-AVX2-NEXT:  .LBB4_2: # %if.end
+; CHECK-AVX2-NEXT:    vmovups (%r8), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, (%rcx)
+; CHECK-AVX2-NEXT:    movq (%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, (%rsi)
+; CHECK-AVX2-NEXT:    movq 8(%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, 8(%rsi)
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_type64:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    cmpl $18, %edx
+; CHECK-AVX512-NEXT:    jl .LBB4_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movslq %edx, %rax
+; CHECK-AVX512-NEXT:    movq %rax, 8(%rdi)
+; CHECK-AVX512-NEXT:  .LBB4_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%r8), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%rcx)
+; CHECK-AVX512-NEXT:    movq (%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, (%rsi)
+; CHECK-AVX512-NEXT:    movq 8(%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, 8(%rsi)
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %conv = sext i32 %x to i64
+  %b = getelementptr inbounds %struct.S2, %struct.S2* %s1, i64 0, i32 1
+  store i64 %conv, i64* %b, align 8
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S2* %s3 to i8*
+  %1 = bitcast %struct.S2* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 8, i1 false)
+  %2 = bitcast %struct.S2* %s2 to i8*
+  %3 = bitcast %struct.S2* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 8, i1 false)
+  ret void
+}
+%struct.S3 = type { i64, i8, i8, i16, i32 }
+
+; Function Attrs: noinline nounwind uwtable
+define void @test_mixed_type(%struct.S3* nocapture %s1, %struct.S3* nocapture %s2, i32 %x, %struct.S3* nocapture readnone %s3, %struct.S3* nocapture readnone %s4) local_unnamed_addr #0 {
+; CHECK-LABEL: test_mixed_type:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    cmpl $18, %edx
+; CHECK-NEXT:    jl .LBB5_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movslq %edx, %rax
+; CHECK-NEXT:    movq %rax, (%rdi)
+; CHECK-NEXT:    movb %dl, 8(%rdi)
+; CHECK-NEXT:  .LBB5_2: # %if.end
+; CHECK-NEXT:    movq (%rdi), %rax
+; CHECK-NEXT:    movq %rax, (%rsi)
+; CHECK-NEXT:    movb 8(%rdi), %al
+; CHECK-NEXT:    movb %al, 8(%rsi)
+; CHECK-NEXT:    movl 9(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 9(%rsi)
+; CHECK-NEXT:    movzwl 13(%rdi), %eax
+; CHECK-NEXT:    movw %ax, 13(%rsi)
+; CHECK-NEXT:    movb 15(%rdi), %al
+; CHECK-NEXT:    movb %al, 15(%rsi)
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_mixed_type:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB5_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movslq %edx, %rax
+; DISABLED-NEXT:    movq %rax, (%rdi)
+; DISABLED-NEXT:    movb %dl, 8(%rdi)
+; DISABLED-NEXT:  .LBB5_2: # %if.end
+; DISABLED-NEXT:    movups (%rdi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rsi)
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_mixed_type:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    cmpl $18, %edx
+; CHECK-AVX2-NEXT:    jl .LBB5_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movslq %edx, %rax
+; CHECK-AVX2-NEXT:    movq %rax, (%rdi)
+; CHECK-AVX2-NEXT:    movb %dl, 8(%rdi)
+; CHECK-AVX2-NEXT:  .LBB5_2: # %if.end
+; CHECK-AVX2-NEXT:    movq (%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, (%rsi)
+; CHECK-AVX2-NEXT:    movb 8(%rdi), %al
+; CHECK-AVX2-NEXT:    movb %al, 8(%rsi)
+; CHECK-AVX2-NEXT:    movl 9(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 9(%rsi)
+; CHECK-AVX2-NEXT:    movzwl 13(%rdi), %eax
+; CHECK-AVX2-NEXT:    movw %ax, 13(%rsi)
+; CHECK-AVX2-NEXT:    movb 15(%rdi), %al
+; CHECK-AVX2-NEXT:    movb %al, 15(%rsi)
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_mixed_type:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    cmpl $18, %edx
+; CHECK-AVX512-NEXT:    jl .LBB5_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movslq %edx, %rax
+; CHECK-AVX512-NEXT:    movq %rax, (%rdi)
+; CHECK-AVX512-NEXT:    movb %dl, 8(%rdi)
+; CHECK-AVX512-NEXT:  .LBB5_2: # %if.end
+; CHECK-AVX512-NEXT:    movq (%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, (%rsi)
+; CHECK-AVX512-NEXT:    movb 8(%rdi), %al
+; CHECK-AVX512-NEXT:    movb %al, 8(%rsi)
+; CHECK-AVX512-NEXT:    movl 9(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 9(%rsi)
+; CHECK-AVX512-NEXT:    movzwl 13(%rdi), %eax
+; CHECK-AVX512-NEXT:    movw %ax, 13(%rsi)
+; CHECK-AVX512-NEXT:    movb 15(%rdi), %al
+; CHECK-AVX512-NEXT:    movb %al, 15(%rsi)
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %conv = sext i32 %x to i64
+  %a = getelementptr inbounds %struct.S3, %struct.S3* %s1, i64 0, i32 0
+  store i64 %conv, i64* %a, align 8
+  %conv1 = trunc i32 %x to i8
+  %b = getelementptr inbounds %struct.S3, %struct.S3* %s1, i64 0, i32 1
+  store i8 %conv1, i8* %b, align 8
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S3* %s2 to i8*
+  %1 = bitcast %struct.S3* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 8, i1 false)
+  ret void
+}
+%struct.S4 = type { i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32, i32 }
+
+; Function Attrs: nounwind uwtable
+define void @test_multiple_blocks(%struct.S4* nocapture %s1, %struct.S4* nocapture %s2) local_unnamed_addr #0 {
+; CHECK-LABEL: test_multiple_blocks:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    movl $0, 4(%rdi)
+; CHECK-NEXT:    movl $0, 36(%rdi)
+; CHECK-NEXT:    movups 16(%rdi), %xmm0
+; CHECK-NEXT:    movups %xmm0, 16(%rsi)
+; CHECK-NEXT:    movl 32(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 32(%rsi)
+; CHECK-NEXT:    movl 36(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 36(%rsi)
+; CHECK-NEXT:    movq 40(%rdi), %rax
+; CHECK-NEXT:    movq %rax, 40(%rsi)
+; CHECK-NEXT:    movl (%rdi), %eax
+; CHECK-NEXT:    movl %eax, (%rsi)
+; CHECK-NEXT:    movl 4(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 4(%rsi)
+; CHECK-NEXT:    movq 8(%rdi), %rax
+; CHECK-NEXT:    movq %rax, 8(%rsi)
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_multiple_blocks:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    movl $0, 4(%rdi)
+; DISABLED-NEXT:    movl $0, 36(%rdi)
+; DISABLED-NEXT:    movups 16(%rdi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, 16(%rsi)
+; DISABLED-NEXT:    movups 32(%rdi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, 32(%rsi)
+; DISABLED-NEXT:    movups (%rdi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rsi)
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_multiple_blocks:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    movl $0, 4(%rdi)
+; CHECK-AVX2-NEXT:    movl $0, 36(%rdi)
+; CHECK-AVX2-NEXT:    vmovups 16(%rdi), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, 16(%rsi)
+; CHECK-AVX2-NEXT:    movl 32(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 32(%rsi)
+; CHECK-AVX2-NEXT:    movl 36(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 36(%rsi)
+; CHECK-AVX2-NEXT:    movq 40(%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, 40(%rsi)
+; CHECK-AVX2-NEXT:    movl (%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, (%rsi)
+; CHECK-AVX2-NEXT:    movl 4(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 4(%rsi)
+; CHECK-AVX2-NEXT:    vmovups 8(%rdi), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, 8(%rsi)
+; CHECK-AVX2-NEXT:    movq 24(%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, 24(%rsi)
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_multiple_blocks:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    movl $0, 4(%rdi)
+; CHECK-AVX512-NEXT:    movl $0, 36(%rdi)
+; CHECK-AVX512-NEXT:    vmovups 16(%rdi), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, 16(%rsi)
+; CHECK-AVX512-NEXT:    movl 32(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 32(%rsi)
+; CHECK-AVX512-NEXT:    movl 36(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 36(%rsi)
+; CHECK-AVX512-NEXT:    movq 40(%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, 40(%rsi)
+; CHECK-AVX512-NEXT:    movl (%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, (%rsi)
+; CHECK-AVX512-NEXT:    movl 4(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 4(%rsi)
+; CHECK-AVX512-NEXT:    vmovups 8(%rdi), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, 8(%rsi)
+; CHECK-AVX512-NEXT:    movq 24(%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, 24(%rsi)
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %b = getelementptr inbounds %struct.S4, %struct.S4* %s1, i64 0, i32 1
+  store i32 0, i32* %b, align 4
+  %b3 = getelementptr inbounds %struct.S4, %struct.S4* %s1, i64 0, i32 9
+  store i32 0, i32* %b3, align 4
+  %0 = bitcast %struct.S4* %s2 to i8*
+  %1 = bitcast %struct.S4* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 48, i32 4, i1 false)
+  ret void
+}
+%struct.S5 = type { i16, i16, i16, i16, i16, i16, i16, i16 }
+
+; Function Attrs: nounwind uwtable
+define void @test_type16(%struct.S5* nocapture %s1, %struct.S5* nocapture %s2, i32 %x, %struct.S5* nocapture %s3, %struct.S5* nocapture readonly %s4) local_unnamed_addr #0 {
+; CHECK-LABEL: test_type16:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    cmpl $18, %edx
+; CHECK-NEXT:    jl .LBB7_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movw %dx, 2(%rdi)
+; CHECK-NEXT:  .LBB7_2: # %if.end
+; CHECK-NEXT:    movups (%r8), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%rcx)
+; CHECK-NEXT:    movzwl (%rdi), %eax
+; CHECK-NEXT:    movw %ax, (%rsi)
+; CHECK-NEXT:    movzwl 2(%rdi), %eax
+; CHECK-NEXT:    movw %ax, 2(%rsi)
+; CHECK-NEXT:    movq 4(%rdi), %rax
+; CHECK-NEXT:    movq %rax, 4(%rsi)
+; CHECK-NEXT:    movl 12(%rdi), %eax
+; CHECK-NEXT:    movl %eax, 12(%rsi)
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_type16:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB7_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movw %dx, 2(%rdi)
+; DISABLED-NEXT:  .LBB7_2: # %if.end
+; DISABLED-NEXT:    movups (%r8), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rcx)
+; DISABLED-NEXT:    movups (%rdi), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rsi)
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_type16:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    cmpl $18, %edx
+; CHECK-AVX2-NEXT:    jl .LBB7_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movw %dx, 2(%rdi)
+; CHECK-AVX2-NEXT:  .LBB7_2: # %if.end
+; CHECK-AVX2-NEXT:    vmovups (%r8), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, (%rcx)
+; CHECK-AVX2-NEXT:    movzwl (%rdi), %eax
+; CHECK-AVX2-NEXT:    movw %ax, (%rsi)
+; CHECK-AVX2-NEXT:    movzwl 2(%rdi), %eax
+; CHECK-AVX2-NEXT:    movw %ax, 2(%rsi)
+; CHECK-AVX2-NEXT:    movq 4(%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, 4(%rsi)
+; CHECK-AVX2-NEXT:    movl 12(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 12(%rsi)
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_type16:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    cmpl $18, %edx
+; CHECK-AVX512-NEXT:    jl .LBB7_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movw %dx, 2(%rdi)
+; CHECK-AVX512-NEXT:  .LBB7_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%r8), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%rcx)
+; CHECK-AVX512-NEXT:    movzwl (%rdi), %eax
+; CHECK-AVX512-NEXT:    movw %ax, (%rsi)
+; CHECK-AVX512-NEXT:    movzwl 2(%rdi), %eax
+; CHECK-AVX512-NEXT:    movw %ax, 2(%rsi)
+; CHECK-AVX512-NEXT:    movq 4(%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, 4(%rsi)
+; CHECK-AVX512-NEXT:    movl 12(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 12(%rsi)
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %conv = trunc i32 %x to i16
+  %b = getelementptr inbounds %struct.S5, %struct.S5* %s1, i64 0, i32 1
+  store i16 %conv, i16* %b, align 2
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S5* %s3 to i8*
+  %1 = bitcast %struct.S5* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 2, i1 false)
+  %2 = bitcast %struct.S5* %s2 to i8*
+  %3 = bitcast %struct.S5* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 2, i1 false)
+  ret void
+}
+
+%struct.S6 = type { [4 x i32], i32, i32, i32, i32 }
+
+; Function Attrs: nounwind uwtable
+define void @test_stack(%struct.S6* noalias nocapture sret %agg.result, %struct.S6* byval nocapture readnone align 8 %s1, %struct.S6* byval nocapture align 8 %s2, i32 %x) local_unnamed_addr #0 {
+; CHECK-LABEL: test_stack:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    movl %esi, {{[0-9]+}}(%rsp)
+; CHECK-NEXT:    movaps {{[0-9]+}}(%rsp), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%rdi)
+; CHECK-NEXT:    movq {{[0-9]+}}(%rsp), %rax
+; CHECK-NEXT:    movq %rax, 16(%rdi)
+; CHECK-NEXT:    movl {{[0-9]+}}(%rsp), %eax
+; CHECK-NEXT:    movl %eax, 24(%rdi)
+; CHECK-NEXT:    movl {{[0-9]+}}(%rsp), %eax
+; CHECK-NEXT:    movl %eax, 28(%rdi)
+; CHECK-NEXT:    movq %rdi, %rax
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_stack:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    movl %esi, {{[0-9]+}}(%rsp)
+; DISABLED-NEXT:    movaps {{[0-9]+}}(%rsp), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%rdi)
+; DISABLED-NEXT:    movaps {{[0-9]+}}(%rsp), %xmm0
+; DISABLED-NEXT:    movups %xmm0, 16(%rdi)
+; DISABLED-NEXT:    movq %rdi, %rax
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_stack:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    movl %esi, {{[0-9]+}}(%rsp)
+; CHECK-AVX2-NEXT:    vmovups {{[0-9]+}}(%rsp), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, (%rdi)
+; CHECK-AVX2-NEXT:    movq {{[0-9]+}}(%rsp), %rax
+; CHECK-AVX2-NEXT:    movq %rax, 16(%rdi)
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%rsp), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 24(%rdi)
+; CHECK-AVX2-NEXT:    movl {{[0-9]+}}(%rsp), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 28(%rdi)
+; CHECK-AVX2-NEXT:    movq %rdi, %rax
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_stack:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    movl %esi, {{[0-9]+}}(%rsp)
+; CHECK-AVX512-NEXT:    vmovups {{[0-9]+}}(%rsp), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%rdi)
+; CHECK-AVX512-NEXT:    movq {{[0-9]+}}(%rsp), %rax
+; CHECK-AVX512-NEXT:    movq %rax, 16(%rdi)
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%rsp), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 24(%rdi)
+; CHECK-AVX512-NEXT:    movl {{[0-9]+}}(%rsp), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 28(%rdi)
+; CHECK-AVX512-NEXT:    movq %rdi, %rax
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %s6.sroa.0.0..sroa_cast1 = bitcast %struct.S6* %s2 to i8*
+  %s6.sroa.3.0..sroa_idx4 = getelementptr inbounds %struct.S6, %struct.S6* %s2, i64 0, i32 3
+  store i32 %x, i32* %s6.sroa.3.0..sroa_idx4, align 8
+  %0 = bitcast %struct.S6* %agg.result to i8*
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* nonnull %s6.sroa.0.0..sroa_cast1, i64 32, i32 4, i1 false)
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define void @test_limit_all(%struct.S* %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3, %struct.S* nocapture readonly %s4, i32 %x2) local_unnamed_addr #0 {
+; CHECK-LABEL: test_limit_all:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushq %rbp
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    pushq %r15
+; CHECK-NEXT:    .cfi_def_cfa_offset 24
+; CHECK-NEXT:    pushq %r14
+; CHECK-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-NEXT:    pushq %r12
+; CHECK-NEXT:    .cfi_def_cfa_offset 40
+; CHECK-NEXT:    pushq %rbx
+; CHECK-NEXT:    .cfi_def_cfa_offset 48
+; CHECK-NEXT:    .cfi_offset %rbx, -48
+; CHECK-NEXT:    .cfi_offset %r12, -40
+; CHECK-NEXT:    .cfi_offset %r14, -32
+; CHECK-NEXT:    .cfi_offset %r15, -24
+; CHECK-NEXT:    .cfi_offset %rbp, -16
+; CHECK-NEXT:    movq %r8, %r15
+; CHECK-NEXT:    movq %rcx, %r14
+; CHECK-NEXT:    movl %edx, %ebp
+; CHECK-NEXT:    movq %rsi, %r12
+; CHECK-NEXT:    movq %rdi, %rbx
+; CHECK-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-NEXT:    callq bar
+; CHECK-NEXT:    cmpl $18, %ebp
+; CHECK-NEXT:    jl .LBB9_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %ebp, 4(%rbx)
+; CHECK-NEXT:    movq %rbx, %rdi
+; CHECK-NEXT:    callq bar
+; CHECK-NEXT:  .LBB9_2: # %if.end
+; CHECK-NEXT:    movups (%r15), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%r14)
+; CHECK-NEXT:    movups (%rbx), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%r12)
+; CHECK-NEXT:    popq %rbx
+; CHECK-NEXT:    popq %r12
+; CHECK-NEXT:    popq %r14
+; CHECK-NEXT:    popq %r15
+; CHECK-NEXT:    popq %rbp
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_limit_all:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushq %rbp
+; DISABLED-NEXT:    .cfi_def_cfa_offset 16
+; DISABLED-NEXT:    pushq %r15
+; DISABLED-NEXT:    .cfi_def_cfa_offset 24
+; DISABLED-NEXT:    pushq %r14
+; DISABLED-NEXT:    .cfi_def_cfa_offset 32
+; DISABLED-NEXT:    pushq %r12
+; DISABLED-NEXT:    .cfi_def_cfa_offset 40
+; DISABLED-NEXT:    pushq %rbx
+; DISABLED-NEXT:    .cfi_def_cfa_offset 48
+; DISABLED-NEXT:    .cfi_offset %rbx, -48
+; DISABLED-NEXT:    .cfi_offset %r12, -40
+; DISABLED-NEXT:    .cfi_offset %r14, -32
+; DISABLED-NEXT:    .cfi_offset %r15, -24
+; DISABLED-NEXT:    .cfi_offset %rbp, -16
+; DISABLED-NEXT:    movq %r8, %r15
+; DISABLED-NEXT:    movq %rcx, %r14
+; DISABLED-NEXT:    movl %edx, %ebp
+; DISABLED-NEXT:    movq %rsi, %r12
+; DISABLED-NEXT:    movq %rdi, %rbx
+; DISABLED-NEXT:    movl %r9d, 12(%rdi)
+; DISABLED-NEXT:    callq bar
+; DISABLED-NEXT:    cmpl $18, %ebp
+; DISABLED-NEXT:    jl .LBB9_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %ebp, 4(%rbx)
+; DISABLED-NEXT:    movq %rbx, %rdi
+; DISABLED-NEXT:    callq bar
+; DISABLED-NEXT:  .LBB9_2: # %if.end
+; DISABLED-NEXT:    movups (%r15), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%r14)
+; DISABLED-NEXT:    movups (%rbx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%r12)
+; DISABLED-NEXT:    popq %rbx
+; DISABLED-NEXT:    popq %r12
+; DISABLED-NEXT:    popq %r14
+; DISABLED-NEXT:    popq %r15
+; DISABLED-NEXT:    popq %rbp
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_limit_all:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushq %rbp
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX2-NEXT:    pushq %r15
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 24
+; CHECK-AVX2-NEXT:    pushq %r14
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-AVX2-NEXT:    pushq %r12
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 40
+; CHECK-AVX2-NEXT:    pushq %rbx
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 48
+; CHECK-AVX2-NEXT:    .cfi_offset %rbx, -48
+; CHECK-AVX2-NEXT:    .cfi_offset %r12, -40
+; CHECK-AVX2-NEXT:    .cfi_offset %r14, -32
+; CHECK-AVX2-NEXT:    .cfi_offset %r15, -24
+; CHECK-AVX2-NEXT:    .cfi_offset %rbp, -16
+; CHECK-AVX2-NEXT:    movq %r8, %r15
+; CHECK-AVX2-NEXT:    movq %rcx, %r14
+; CHECK-AVX2-NEXT:    movl %edx, %ebp
+; CHECK-AVX2-NEXT:    movq %rsi, %r12
+; CHECK-AVX2-NEXT:    movq %rdi, %rbx
+; CHECK-AVX2-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-AVX2-NEXT:    callq bar
+; CHECK-AVX2-NEXT:    cmpl $18, %ebp
+; CHECK-AVX2-NEXT:    jl .LBB9_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %ebp, 4(%rbx)
+; CHECK-AVX2-NEXT:    movq %rbx, %rdi
+; CHECK-AVX2-NEXT:    callq bar
+; CHECK-AVX2-NEXT:  .LBB9_2: # %if.end
+; CHECK-AVX2-NEXT:    vmovups (%r15), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, (%r14)
+; CHECK-AVX2-NEXT:    vmovups (%rbx), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, (%r12)
+; CHECK-AVX2-NEXT:    popq %rbx
+; CHECK-AVX2-NEXT:    popq %r12
+; CHECK-AVX2-NEXT:    popq %r14
+; CHECK-AVX2-NEXT:    popq %r15
+; CHECK-AVX2-NEXT:    popq %rbp
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_limit_all:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushq %rbp
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX512-NEXT:    pushq %r15
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 24
+; CHECK-AVX512-NEXT:    pushq %r14
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-AVX512-NEXT:    pushq %r12
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 40
+; CHECK-AVX512-NEXT:    pushq %rbx
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 48
+; CHECK-AVX512-NEXT:    .cfi_offset %rbx, -48
+; CHECK-AVX512-NEXT:    .cfi_offset %r12, -40
+; CHECK-AVX512-NEXT:    .cfi_offset %r14, -32
+; CHECK-AVX512-NEXT:    .cfi_offset %r15, -24
+; CHECK-AVX512-NEXT:    .cfi_offset %rbp, -16
+; CHECK-AVX512-NEXT:    movq %r8, %r15
+; CHECK-AVX512-NEXT:    movq %rcx, %r14
+; CHECK-AVX512-NEXT:    movl %edx, %ebp
+; CHECK-AVX512-NEXT:    movq %rsi, %r12
+; CHECK-AVX512-NEXT:    movq %rdi, %rbx
+; CHECK-AVX512-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-AVX512-NEXT:    callq bar
+; CHECK-AVX512-NEXT:    cmpl $18, %ebp
+; CHECK-AVX512-NEXT:    jl .LBB9_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %ebp, 4(%rbx)
+; CHECK-AVX512-NEXT:    movq %rbx, %rdi
+; CHECK-AVX512-NEXT:    callq bar
+; CHECK-AVX512-NEXT:  .LBB9_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%r15), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%r14)
+; CHECK-AVX512-NEXT:    vmovups (%rbx), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%r12)
+; CHECK-AVX512-NEXT:    popq %rbx
+; CHECK-AVX512-NEXT:    popq %r12
+; CHECK-AVX512-NEXT:    popq %r14
+; CHECK-AVX512-NEXT:    popq %r15
+; CHECK-AVX512-NEXT:    popq %rbp
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %d = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 3
+  store i32 %x2, i32* %d, align 4
+  tail call void @bar(%struct.S* %s1) #3
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 1
+  store i32 %x, i32* %b, align 4
+  tail call void @bar(%struct.S* nonnull %s1) #3
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S* %s3 to i8*
+  %1 = bitcast %struct.S* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  %2 = bitcast %struct.S* %s2 to i8*
+  %3 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 4, i1 false)
+  ret void
+}
+
+; Function Attrs: nounwind uwtable
+define void @test_limit_one_pred(%struct.S* %s1, %struct.S* nocapture %s2, i32 %x, %struct.S* nocapture %s3, %struct.S* nocapture readonly %s4, i32 %x2) local_unnamed_addr #0 {
+; CHECK-LABEL: test_limit_one_pred:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    pushq %r15
+; CHECK-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-NEXT:    pushq %r14
+; CHECK-NEXT:    .cfi_def_cfa_offset 24
+; CHECK-NEXT:    pushq %r12
+; CHECK-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-NEXT:    pushq %rbx
+; CHECK-NEXT:    .cfi_def_cfa_offset 40
+; CHECK-NEXT:    pushq %rax
+; CHECK-NEXT:    .cfi_def_cfa_offset 48
+; CHECK-NEXT:    .cfi_offset %rbx, -40
+; CHECK-NEXT:    .cfi_offset %r12, -32
+; CHECK-NEXT:    .cfi_offset %r14, -24
+; CHECK-NEXT:    .cfi_offset %r15, -16
+; CHECK-NEXT:    movq %r8, %r12
+; CHECK-NEXT:    movq %rcx, %r15
+; CHECK-NEXT:    movq %rsi, %r14
+; CHECK-NEXT:    movq %rdi, %rbx
+; CHECK-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-NEXT:    cmpl $18, %edx
+; CHECK-NEXT:    jl .LBB10_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl %edx, 4(%rbx)
+; CHECK-NEXT:    movq %rbx, %rdi
+; CHECK-NEXT:    callq bar
+; CHECK-NEXT:  .LBB10_2: # %if.end
+; CHECK-NEXT:    movups (%r12), %xmm0
+; CHECK-NEXT:    movups %xmm0, (%r15)
+; CHECK-NEXT:    movq (%rbx), %rax
+; CHECK-NEXT:    movq %rax, (%r14)
+; CHECK-NEXT:    movl 8(%rbx), %eax
+; CHECK-NEXT:    movl %eax, 8(%r14)
+; CHECK-NEXT:    movl 12(%rbx), %eax
+; CHECK-NEXT:    movl %eax, 12(%r14)
+; CHECK-NEXT:    addq $8, %rsp
+; CHECK-NEXT:    popq %rbx
+; CHECK-NEXT:    popq %r12
+; CHECK-NEXT:    popq %r14
+; CHECK-NEXT:    popq %r15
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_limit_one_pred:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    pushq %r15
+; DISABLED-NEXT:    .cfi_def_cfa_offset 16
+; DISABLED-NEXT:    pushq %r14
+; DISABLED-NEXT:    .cfi_def_cfa_offset 24
+; DISABLED-NEXT:    pushq %r12
+; DISABLED-NEXT:    .cfi_def_cfa_offset 32
+; DISABLED-NEXT:    pushq %rbx
+; DISABLED-NEXT:    .cfi_def_cfa_offset 40
+; DISABLED-NEXT:    pushq %rax
+; DISABLED-NEXT:    .cfi_def_cfa_offset 48
+; DISABLED-NEXT:    .cfi_offset %rbx, -40
+; DISABLED-NEXT:    .cfi_offset %r12, -32
+; DISABLED-NEXT:    .cfi_offset %r14, -24
+; DISABLED-NEXT:    .cfi_offset %r15, -16
+; DISABLED-NEXT:    movq %r8, %r15
+; DISABLED-NEXT:    movq %rcx, %r14
+; DISABLED-NEXT:    movq %rsi, %r12
+; DISABLED-NEXT:    movq %rdi, %rbx
+; DISABLED-NEXT:    movl %r9d, 12(%rdi)
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB10_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl %edx, 4(%rbx)
+; DISABLED-NEXT:    movq %rbx, %rdi
+; DISABLED-NEXT:    callq bar
+; DISABLED-NEXT:  .LBB10_2: # %if.end
+; DISABLED-NEXT:    movups (%r15), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%r14)
+; DISABLED-NEXT:    movups (%rbx), %xmm0
+; DISABLED-NEXT:    movups %xmm0, (%r12)
+; DISABLED-NEXT:    addq $8, %rsp
+; DISABLED-NEXT:    popq %rbx
+; DISABLED-NEXT:    popq %r12
+; DISABLED-NEXT:    popq %r14
+; DISABLED-NEXT:    popq %r15
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_limit_one_pred:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    pushq %r15
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX2-NEXT:    pushq %r14
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 24
+; CHECK-AVX2-NEXT:    pushq %r12
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-AVX2-NEXT:    pushq %rbx
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 40
+; CHECK-AVX2-NEXT:    pushq %rax
+; CHECK-AVX2-NEXT:    .cfi_def_cfa_offset 48
+; CHECK-AVX2-NEXT:    .cfi_offset %rbx, -40
+; CHECK-AVX2-NEXT:    .cfi_offset %r12, -32
+; CHECK-AVX2-NEXT:    .cfi_offset %r14, -24
+; CHECK-AVX2-NEXT:    .cfi_offset %r15, -16
+; CHECK-AVX2-NEXT:    movq %r8, %r12
+; CHECK-AVX2-NEXT:    movq %rcx, %r15
+; CHECK-AVX2-NEXT:    movq %rsi, %r14
+; CHECK-AVX2-NEXT:    movq %rdi, %rbx
+; CHECK-AVX2-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-AVX2-NEXT:    cmpl $18, %edx
+; CHECK-AVX2-NEXT:    jl .LBB10_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl %edx, 4(%rbx)
+; CHECK-AVX2-NEXT:    movq %rbx, %rdi
+; CHECK-AVX2-NEXT:    callq bar
+; CHECK-AVX2-NEXT:  .LBB10_2: # %if.end
+; CHECK-AVX2-NEXT:    vmovups (%r12), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, (%r15)
+; CHECK-AVX2-NEXT:    movq (%rbx), %rax
+; CHECK-AVX2-NEXT:    movq %rax, (%r14)
+; CHECK-AVX2-NEXT:    movl 8(%rbx), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 8(%r14)
+; CHECK-AVX2-NEXT:    movl 12(%rbx), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 12(%r14)
+; CHECK-AVX2-NEXT:    addq $8, %rsp
+; CHECK-AVX2-NEXT:    popq %rbx
+; CHECK-AVX2-NEXT:    popq %r12
+; CHECK-AVX2-NEXT:    popq %r14
+; CHECK-AVX2-NEXT:    popq %r15
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_limit_one_pred:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    pushq %r15
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 16
+; CHECK-AVX512-NEXT:    pushq %r14
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 24
+; CHECK-AVX512-NEXT:    pushq %r12
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 32
+; CHECK-AVX512-NEXT:    pushq %rbx
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 40
+; CHECK-AVX512-NEXT:    pushq %rax
+; CHECK-AVX512-NEXT:    .cfi_def_cfa_offset 48
+; CHECK-AVX512-NEXT:    .cfi_offset %rbx, -40
+; CHECK-AVX512-NEXT:    .cfi_offset %r12, -32
+; CHECK-AVX512-NEXT:    .cfi_offset %r14, -24
+; CHECK-AVX512-NEXT:    .cfi_offset %r15, -16
+; CHECK-AVX512-NEXT:    movq %r8, %r12
+; CHECK-AVX512-NEXT:    movq %rcx, %r15
+; CHECK-AVX512-NEXT:    movq %rsi, %r14
+; CHECK-AVX512-NEXT:    movq %rdi, %rbx
+; CHECK-AVX512-NEXT:    movl %r9d, 12(%rdi)
+; CHECK-AVX512-NEXT:    cmpl $18, %edx
+; CHECK-AVX512-NEXT:    jl .LBB10_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl %edx, 4(%rbx)
+; CHECK-AVX512-NEXT:    movq %rbx, %rdi
+; CHECK-AVX512-NEXT:    callq bar
+; CHECK-AVX512-NEXT:  .LBB10_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%r12), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, (%r15)
+; CHECK-AVX512-NEXT:    movq (%rbx), %rax
+; CHECK-AVX512-NEXT:    movq %rax, (%r14)
+; CHECK-AVX512-NEXT:    movl 8(%rbx), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 8(%r14)
+; CHECK-AVX512-NEXT:    movl 12(%rbx), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 12(%r14)
+; CHECK-AVX512-NEXT:    addq $8, %rsp
+; CHECK-AVX512-NEXT:    popq %rbx
+; CHECK-AVX512-NEXT:    popq %r12
+; CHECK-AVX512-NEXT:    popq %r14
+; CHECK-AVX512-NEXT:    popq %r15
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %d = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 3
+  store i32 %x2, i32* %d, align 4
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S, %struct.S* %s1, i64 0, i32 1
+  store i32 %x, i32* %b, align 4
+  tail call void @bar(%struct.S* nonnull %s1) #3
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S* %s3 to i8*
+  %1 = bitcast %struct.S* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 16, i32 4, i1 false)
+  %2 = bitcast %struct.S* %s2 to i8*
+  %3 = bitcast %struct.S* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 16, i32 4, i1 false)
+  ret void
+}
+
+
+declare void @bar(%struct.S*) local_unnamed_addr #1
+
+
+; Function Attrs: argmemonly nounwind
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1) #1
+
+attributes #0 = { nounwind uwtable "target-cpu"="x86-64" }
+
+%struct.S7 = type { float, float, float , float, float, float, float, float }
+
+; Function Attrs: nounwind uwtable
+define void @test_conditional_block_float(%struct.S7* nocapture %s1, %struct.S7* nocapture %s2, i32 %x, %struct.S7* nocapture %s3, %struct.S7* nocapture readonly %s4, float %y) local_unnamed_addr #0 {
+; CHECK-LABEL: test_conditional_block_float:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    cmpl $18, %edx
+; CHECK-NEXT:    jl .LBB11_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movl $1065353216, 4(%rdi) # imm = 0x3F800000
+; CHECK-NEXT:  .LBB11_2: # %if.end
+; CHECK-NEXT:    movups (%r8), %xmm0
+; CHECK-NEXT:    movups 16(%r8), %xmm1
+; CHECK-NEXT:    movups %xmm1, 16(%rcx)
+; CHECK-NEXT:    movups %xmm0, (%rcx)
+; CHECK-NEXT:    movl (%rdi), %eax
+; CHECK-NEXT:    movl 4(%rdi), %ecx
+; CHECK-NEXT:    movq 8(%rdi), %rdx
+; CHECK-NEXT:    movups 16(%rdi), %xmm0
+; CHECK-NEXT:    movups %xmm0, 16(%rsi)
+; CHECK-NEXT:    movl %eax, (%rsi)
+; CHECK-NEXT:    movl %ecx, 4(%rsi)
+; CHECK-NEXT:    movq %rdx, 8(%rsi)
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_conditional_block_float:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB11_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movl $1065353216, 4(%rdi) # imm = 0x3F800000
+; DISABLED-NEXT:  .LBB11_2: # %if.end
+; DISABLED-NEXT:    movups (%r8), %xmm0
+; DISABLED-NEXT:    movups 16(%r8), %xmm1
+; DISABLED-NEXT:    movups %xmm1, 16(%rcx)
+; DISABLED-NEXT:    movups %xmm0, (%rcx)
+; DISABLED-NEXT:    movups (%rdi), %xmm0
+; DISABLED-NEXT:    movups 16(%rdi), %xmm1
+; DISABLED-NEXT:    movups %xmm1, 16(%rsi)
+; DISABLED-NEXT:    movups %xmm0, (%rsi)
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_conditional_block_float:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    cmpl $18, %edx
+; CHECK-AVX2-NEXT:    jl .LBB11_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movl $1065353216, 4(%rdi) # imm = 0x3F800000
+; CHECK-AVX2-NEXT:  .LBB11_2: # %if.end
+; CHECK-AVX2-NEXT:    vmovups (%r8), %ymm0
+; CHECK-AVX2-NEXT:    vmovups %ymm0, (%rcx)
+; CHECK-AVX2-NEXT:    movl (%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, (%rsi)
+; CHECK-AVX2-NEXT:    movl 4(%rdi), %eax
+; CHECK-AVX2-NEXT:    movl %eax, 4(%rsi)
+; CHECK-AVX2-NEXT:    vmovups 8(%rdi), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, 8(%rsi)
+; CHECK-AVX2-NEXT:    movq 24(%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, 24(%rsi)
+; CHECK-AVX2-NEXT:    vzeroupper
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_conditional_block_float:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    cmpl $18, %edx
+; CHECK-AVX512-NEXT:    jl .LBB11_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movl $1065353216, 4(%rdi) # imm = 0x3F800000
+; CHECK-AVX512-NEXT:  .LBB11_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%r8), %ymm0
+; CHECK-AVX512-NEXT:    vmovups %ymm0, (%rcx)
+; CHECK-AVX512-NEXT:    movl (%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, (%rsi)
+; CHECK-AVX512-NEXT:    movl 4(%rdi), %eax
+; CHECK-AVX512-NEXT:    movl %eax, 4(%rsi)
+; CHECK-AVX512-NEXT:    vmovups 8(%rdi), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, 8(%rsi)
+; CHECK-AVX512-NEXT:    movq 24(%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, 24(%rsi)
+; CHECK-AVX512-NEXT:    vzeroupper
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S7, %struct.S7* %s1, i64 0, i32 1
+  store float 1.0, float* %b, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S7* %s3 to i8*
+  %1 = bitcast %struct.S7* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 32, i32 4, i1 false)
+  %2 = bitcast %struct.S7* %s2 to i8*
+  %3 = bitcast %struct.S7* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 32, i32 4, i1 false)
+  ret void
+}
+
+%struct.S8 = type { i64, i64, i64, i64, i64, i64 }
+
+; Function Attrs: nounwind uwtable
+define void @test_conditional_block_ymm(%struct.S8* nocapture %s1, %struct.S8* nocapture %s2, i32 %x, %struct.S8* nocapture %s3, %struct.S8* nocapture readonly %s4) local_unnamed_addr #0 {
+; CHECK-LABEL: test_conditional_block_ymm:
+; CHECK:       # %bb.0: # %entry
+; CHECK-NEXT:    cmpl $18, %edx
+; CHECK-NEXT:    jl .LBB12_2
+; CHECK-NEXT:  # %bb.1: # %if.then
+; CHECK-NEXT:    movq $1, 8(%rdi)
+; CHECK-NEXT:  .LBB12_2: # %if.end
+; CHECK-NEXT:    movups (%r8), %xmm0
+; CHECK-NEXT:    movups 16(%r8), %xmm1
+; CHECK-NEXT:    movups %xmm1, 16(%rcx)
+; CHECK-NEXT:    movups %xmm0, (%rcx)
+; CHECK-NEXT:    movq (%rdi), %rax
+; CHECK-NEXT:    movq 8(%rdi), %rcx
+; CHECK-NEXT:    movups 16(%rdi), %xmm0
+; CHECK-NEXT:    movups %xmm0, 16(%rsi)
+; CHECK-NEXT:    movq %rax, (%rsi)
+; CHECK-NEXT:    movq %rcx, 8(%rsi)
+; CHECK-NEXT:    retq
+;
+; DISABLED-LABEL: test_conditional_block_ymm:
+; DISABLED:       # %bb.0: # %entry
+; DISABLED-NEXT:    cmpl $18, %edx
+; DISABLED-NEXT:    jl .LBB12_2
+; DISABLED-NEXT:  # %bb.1: # %if.then
+; DISABLED-NEXT:    movq $1, 8(%rdi)
+; DISABLED-NEXT:  .LBB12_2: # %if.end
+; DISABLED-NEXT:    movups (%r8), %xmm0
+; DISABLED-NEXT:    movups 16(%r8), %xmm1
+; DISABLED-NEXT:    movups %xmm1, 16(%rcx)
+; DISABLED-NEXT:    movups %xmm0, (%rcx)
+; DISABLED-NEXT:    movups (%rdi), %xmm0
+; DISABLED-NEXT:    movups 16(%rdi), %xmm1
+; DISABLED-NEXT:    movups %xmm1, 16(%rsi)
+; DISABLED-NEXT:    movups %xmm0, (%rsi)
+; DISABLED-NEXT:    retq
+;
+; CHECK-AVX2-LABEL: test_conditional_block_ymm:
+; CHECK-AVX2:       # %bb.0: # %entry
+; CHECK-AVX2-NEXT:    cmpl $18, %edx
+; CHECK-AVX2-NEXT:    jl .LBB12_2
+; CHECK-AVX2-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX2-NEXT:    movq $1, 8(%rdi)
+; CHECK-AVX2-NEXT:  .LBB12_2: # %if.end
+; CHECK-AVX2-NEXT:    vmovups (%r8), %ymm0
+; CHECK-AVX2-NEXT:    vmovups %ymm0, (%rcx)
+; CHECK-AVX2-NEXT:    movq (%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, (%rsi)
+; CHECK-AVX2-NEXT:    movq 8(%rdi), %rax
+; CHECK-AVX2-NEXT:    movq %rax, 8(%rsi)
+; CHECK-AVX2-NEXT:    vmovups 16(%rdi), %xmm0
+; CHECK-AVX2-NEXT:    vmovups %xmm0, 16(%rsi)
+; CHECK-AVX2-NEXT:    vzeroupper
+; CHECK-AVX2-NEXT:    retq
+;
+; CHECK-AVX512-LABEL: test_conditional_block_ymm:
+; CHECK-AVX512:       # %bb.0: # %entry
+; CHECK-AVX512-NEXT:    cmpl $18, %edx
+; CHECK-AVX512-NEXT:    jl .LBB12_2
+; CHECK-AVX512-NEXT:  # %bb.1: # %if.then
+; CHECK-AVX512-NEXT:    movq $1, 8(%rdi)
+; CHECK-AVX512-NEXT:  .LBB12_2: # %if.end
+; CHECK-AVX512-NEXT:    vmovups (%r8), %ymm0
+; CHECK-AVX512-NEXT:    vmovups %ymm0, (%rcx)
+; CHECK-AVX512-NEXT:    movq (%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, (%rsi)
+; CHECK-AVX512-NEXT:    movq 8(%rdi), %rax
+; CHECK-AVX512-NEXT:    movq %rax, 8(%rsi)
+; CHECK-AVX512-NEXT:    vmovups 16(%rdi), %xmm0
+; CHECK-AVX512-NEXT:    vmovups %xmm0, 16(%rsi)
+; CHECK-AVX512-NEXT:    vzeroupper
+; CHECK-AVX512-NEXT:    retq
+entry:
+  %cmp = icmp sgt i32 %x, 17
+  br i1 %cmp, label %if.then, label %if.end
+
+if.then:                                          ; preds = %entry
+  %b = getelementptr inbounds %struct.S8, %struct.S8* %s1, i64 0, i32 1
+  store i64 1, i64* %b, align 4
+  br label %if.end
+
+if.end:                                           ; preds = %if.then, %entry
+  %0 = bitcast %struct.S8* %s3 to i8*
+  %1 = bitcast %struct.S8* %s4 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 32, i32 4, i1 false)
+  %2 = bitcast %struct.S8* %s2 to i8*
+  %3 = bitcast %struct.S8* %s1 to i8*
+  tail call void @llvm.memcpy.p0i8.p0i8.i64(i8* %2, i8* %3, i64 32, i32 4, i1 false)
+  ret void
+}
+




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