[llvm] r279247 - Revert r279242 - it's failing the tests
Anton Korobeynikov via llvm-commits
llvm-commits at lists.llvm.org
Fri Aug 19 07:18:34 PDT 2016
Author: asl
Date: Fri Aug 19 09:18:34 2016
New Revision: 279247
URL: http://llvm.org/viewvc/llvm-project?rev=279247&view=rev
Log:
Revert r279242 - it's failing the tests
Removed:
llvm/trunk/test/CodeGen/MSP430/BranchSelector.ll
Modified:
llvm/trunk/lib/Target/MSP430/MSP430BranchSelector.cpp
Modified: llvm/trunk/lib/Target/MSP430/MSP430BranchSelector.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/MSP430/MSP430BranchSelector.cpp?rev=279247&r1=279246&r2=279247&view=diff
==============================================================================
--- llvm/trunk/lib/Target/MSP430/MSP430BranchSelector.cpp (original)
+++ llvm/trunk/lib/Target/MSP430/MSP430BranchSelector.cpp Fri Aug 19 09:18:34 2016
@@ -26,86 +26,64 @@
using namespace llvm;
#define DEBUG_TYPE "msp430-branch-select"
-#define MSP430_BR_SELECT_NAME "MSP430 Branch Selector"
-static cl::opt<bool>
- BranchSelectEnabled("msp430-branch-select", cl::Hidden, cl::init(true),
- cl::desc("Expand out of range branches"));
-
-STATISTIC(NumSplit, "Number of machine basic blocks split");
STATISTIC(NumExpanded, "Number of branches expanded to long format");
namespace {
-class MSP430BSel : public MachineFunctionPass {
-
- typedef SmallVector<int, 16> OffsetVector;
-
- MachineFunction *MF;
- const MSP430InstrInfo *TII;
-
- unsigned measureFunction(OffsetVector &BlockOffsets,
- MachineBasicBlock *FromBB = nullptr);
- bool expandBranches(OffsetVector &BlockOffsets);
-
-public:
- static char ID;
- MSP430BSel() : MachineFunctionPass(ID) {}
-
- bool runOnMachineFunction(MachineFunction &MF) override;
-
- MachineFunctionProperties getRequiredProperties() const override {
- return MachineFunctionProperties().set(
- MachineFunctionProperties::Property::AllVRegsAllocated);
- }
+ struct MSP430BSel : public MachineFunctionPass {
+ static char ID;
+ MSP430BSel() : MachineFunctionPass(ID) {}
+
+ /// BlockSizes - The sizes of the basic blocks in the function.
+ std::vector<unsigned> BlockSizes;
+
+ bool runOnMachineFunction(MachineFunction &Fn) override;
+
+ MachineFunctionProperties getRequiredProperties() const override {
+ return MachineFunctionProperties().set(
+ MachineFunctionProperties::Property::AllVRegsAllocated);
+ }
- const char *getPassName() const override { return MSP430_BR_SELECT_NAME; }
-};
-char MSP430BSel::ID = 0;
+ const char *getPassName() const override {
+ return "MSP430 Branch Selector";
+ }
+ };
+ char MSP430BSel::ID = 0;
}
-static bool isInRage(int DistanceInBytes) {
- // According to CC430 Family User's Guide, Section 4.5.1.3, branch
- // instructions have the signed 10-bit word offset field, so first we need to
- // convert the distance from bytes to words, then check if it fits in 10-bit
- // signed integer.
- const int WordSize = 2;
-
- assert((DistanceInBytes % WordSize == 0) &&
- "Branch offset should be word aligned!");
-
- int Words = DistanceInBytes / WordSize;
- return isInt<10>(Words);
+/// createMSP430BranchSelectionPass - returns an instance of the Branch
+/// Selection Pass
+///
+FunctionPass *llvm::createMSP430BranchSelectionPass() {
+ return new MSP430BSel();
}
-/// Measure each basic block, fill the BlockOffsets, and return the size of
-/// the function, starting with BB
-unsigned MSP430BSel::measureFunction(OffsetVector &BlockOffsets,
- MachineBasicBlock *FromBB) {
+bool MSP430BSel::runOnMachineFunction(MachineFunction &Fn) {
+ const MSP430InstrInfo *TII =
+ static_cast<const MSP430InstrInfo *>(Fn.getSubtarget().getInstrInfo());
// Give the blocks of the function a dense, in-order, numbering.
- MF->RenumberBlocks(FromBB);
+ Fn.RenumberBlocks();
+ BlockSizes.resize(Fn.getNumBlockIDs());
- MachineFunction::iterator Begin;
- if (FromBB == nullptr) {
- Begin = MF->begin();
- } else {
- Begin = FromBB->getIterator();
- }
+ // Measure each MBB and compute a size for the entire function.
+ unsigned FuncSize = 0;
+ for (MachineBasicBlock &MBB : Fn) {
+ unsigned BlockSize = 0;
+ for (MachineInstr &MI : MBB)
+ BlockSize += TII->getInstSizeInBytes(MI);
- BlockOffsets.resize(MF->getNumBlockIDs());
+ BlockSizes[MBB.getNumber()] = BlockSize;
+ FuncSize += BlockSize;
+ }
- unsigned TotalSize = BlockOffsets[Begin->getNumber()];
- for (auto &MBB : make_range(Begin, MF->end())) {
- BlockOffsets[MBB.getNumber()] = TotalSize;
- for (MachineInstr &MI : MBB) {
- TotalSize += TII->getInstSizeInBytes(MI);
- }
+ // If the entire function is smaller than the displacement of a branch field,
+ // we know we don't need to shrink any branches in this function. This is a
+ // common case.
+ if (FuncSize < (1 << 9)) {
+ BlockSizes.clear();
+ return false;
}
- return TotalSize;
-}
-/// Do expand branches and split the basic blocks if necessary.
-/// Returns true if made any change.
-bool MSP430BSel::expandBranches(OffsetVector &BlockOffsets) {
// For each conditional branch, if the offset to its destination is larger
// than the offset field allows, transform it into a long branch sequence
// like this:
@@ -115,143 +93,91 @@ bool MSP430BSel::expandBranches(OffsetVe
// b!CC $PC+6
// b MBB
//
- bool MadeChange = false;
- for (auto MBB = MF->begin(), E = MF->end(); MBB != E; ++MBB) {
- unsigned MBBStartOffset = 0;
- for (auto MI = MBB->begin(), EE = MBB->end(); MI != EE; ++MI) {
- MBBStartOffset += TII->getInstSizeInBytes(*MI);
-
- // If this instruction is not a short branch then skip it.
- if (MI->getOpcode() != MSP430::JCC && MI->getOpcode() != MSP430::JMP) {
- continue;
- }
-
- MachineBasicBlock *DestBB = MI->getOperand(0).getMBB();
- // Determine the distance from the current branch to the destination
- // block. MBBStartOffset already includes the size of the current branch
- // instruction.
- int BlockDistance =
- BlockOffsets[DestBB->getNumber()] - BlockOffsets[MBB->getNumber()];
- int BranchDistance = BlockDistance - MBBStartOffset;
-
- // If this branch is in range, ignore it.
- if (isInRage(BranchDistance)) {
- continue;
- }
-
- DEBUG(dbgs() << " Found a branch that needs expanding, BB#"
- << DestBB->getNumber() << ", Distance " << BranchDistance
- << "\n");
-
- // If JCC is not the last instruction we need to split the MBB.
- if (MI->getOpcode() == MSP430::JCC && std::next(MI) != EE) {
-
- DEBUG(dbgs() << " Found a basic block that needs to be split, BB#"
- << MBB->getNumber() << "\n");
-
- // Create a new basic block.
- MachineBasicBlock *NewBB =
- MF->CreateMachineBasicBlock(MBB->getBasicBlock());
- MF->insert(std::next(MBB), NewBB);
-
- // Splice the instructions following MI over to the NewBB.
- NewBB->splice(NewBB->end(), &*MBB, std::next(MI), MBB->end());
-
- // Update the successor lists.
- for (MachineBasicBlock *Succ : MBB->successors()) {
- if (Succ == DestBB) {
- continue;
- }
- MBB->replaceSuccessor(Succ, NewBB);
- NewBB->addSuccessor(Succ);
+ bool MadeChange = true;
+ bool EverMadeChange = false;
+ while (MadeChange) {
+ // Iteratively expand branches until we reach a fixed point.
+ MadeChange = false;
+
+ for (MachineFunction::iterator MFI = Fn.begin(), E = Fn.end(); MFI != E;
+ ++MFI) {
+ MachineBasicBlock &MBB = *MFI;
+ unsigned MBBStartOffset = 0;
+ for (MachineBasicBlock::iterator I = MBB.begin(), E = MBB.end();
+ I != E; ++I) {
+ if ((I->getOpcode() != MSP430::JCC || I->getOperand(0).isImm()) &&
+ I->getOpcode() != MSP430::JMP) {
+ MBBStartOffset += TII->getInstSizeInBytes(*I);
+ continue;
}
- // We introduced a new MBB so all following blocks should be numbered
- // and measured again.
- measureFunction(BlockOffsets, &*MBB);
-
- ++NumSplit;
-
- // It may be not necessary to start all over at this point, but it's
- // safer do this anyway.
- return true;
- }
-
- MachineInstr &OldBranch = *MI;
- DebugLoc dl = OldBranch.getDebugLoc();
- int InstrSizeDiff = -TII->getInstSizeInBytes(OldBranch);
-
- if (MI->getOpcode() == MSP430::JCC) {
- MachineBasicBlock *NextMBB = &*std::next(MBB);
- assert(MBB->isSuccessor(NextMBB) &&
- "This block must have a layout successor!");
-
- // The BCC operands are:
- // 0. Target MBB
- // 1. MSP430 branch predicate
- SmallVector<MachineOperand, 1> Cond;
- Cond.push_back(MI->getOperand(1));
-
- // Jump over the long branch on the opposite condition
- TII->ReverseBranchCondition(Cond);
- auto &NewInstr = BuildMI(*MBB, MI, dl, TII->get(MSP430::JCC))
- .addMBB(NextMBB)
- .addOperand(Cond[0]);
- InstrSizeDiff += TII->getInstSizeInBytes(*NewInstr);
- }
+ // Determine the offset from the current branch to the destination
+ // block.
+ MachineBasicBlock *Dest = I->getOperand(0).getMBB();
+
+ int BranchSize;
+ if (Dest->getNumber() <= MBB.getNumber()) {
+ // If this is a backwards branch, the delta is the offset from the
+ // start of this block to this branch, plus the sizes of all blocks
+ // from this block to the dest.
+ BranchSize = MBBStartOffset;
+
+ for (unsigned i = Dest->getNumber(), e = MBB.getNumber(); i != e; ++i)
+ BranchSize += BlockSizes[i];
+ } else {
+ // Otherwise, add the size of the blocks between this block and the
+ // dest to the number of bytes left in this block.
+ BranchSize = -MBBStartOffset;
- // Unconditional branch to the real destination.
- MI = BuildMI(*MBB, MI, dl, TII->get(MSP430::Bi)).addMBB(DestBB);
- InstrSizeDiff += TII->getInstSizeInBytes(*MI);
-
- // Remove the old branch from the function.
- OldBranch.eraseFromParent();
-
- // The size of a new instruction is different from the old one, so we need
- // to correct all block offsets.
- for (int i = MBB->getNumber() + 1, e = BlockOffsets.size(); i < e; ++i) {
- BlockOffsets[i] += InstrSizeDiff;
- }
- MBBStartOffset += InstrSizeDiff;
+ for (unsigned i = MBB.getNumber(), e = Dest->getNumber(); i != e; ++i)
+ BranchSize += BlockSizes[i];
+ }
- ++NumExpanded;
- MadeChange = true;
- }
- }
- return MadeChange;
-}
+ // If this branch is in range, ignore it.
+ if (isInt<10>(BranchSize)) {
+ MBBStartOffset += 2;
+ continue;
+ }
-bool MSP430BSel::runOnMachineFunction(MachineFunction &mf) {
- MF = &mf;
- TII = static_cast<const MSP430InstrInfo *>(MF->getSubtarget().getInstrInfo());
+ // Otherwise, we have to expand it to a long branch.
+ unsigned NewSize;
+ MachineInstr &OldBranch = *I;
+ DebugLoc dl = OldBranch.getDebugLoc();
+
+ if (I->getOpcode() == MSP430::JMP) {
+ NewSize = 4;
+ } else {
+ // The BCC operands are:
+ // 0. MSP430 branch predicate
+ // 1. Target MBB
+ SmallVector<MachineOperand, 1> Cond;
+ Cond.push_back(I->getOperand(1));
+
+ // Jump over the uncond branch inst (i.e. $+6) on opposite condition.
+ TII->ReverseBranchCondition(Cond);
+ BuildMI(MBB, I, dl, TII->get(MSP430::JCC))
+ .addImm(4).addOperand(Cond[0]);
- // If the pass is disabled, just bail early.
- if (!BranchSelectEnabled)
- return false;
+ NewSize = 6;
+ }
+ // Uncond branch to the real destination.
+ I = BuildMI(MBB, I, dl, TII->get(MSP430::Bi)).addMBB(Dest);
- DEBUG(dbgs() << "\n********** " MSP430_BR_SELECT_NAME " **********\n");
+ // Remove the old branch from the function.
+ OldBranch.eraseFromParent();
- // BlockOffsets - Contains the distance from the beginning of the function to
- // the beginning of each basic block.
- OffsetVector BlockOffsets;
+ // Remember that this instruction is NewSize bytes, increase the size of the
+ // block by NewSize-2, remember to iterate.
+ BlockSizes[MBB.getNumber()] += NewSize-2;
+ MBBStartOffset += NewSize;
- unsigned FunctionSize = measureFunction(BlockOffsets);
- // If the entire function is smaller than the displacement of a branch field,
- // we know we don't need to expand any branches in this
- // function. This is a common case.
- if (isInRage(FunctionSize)) {
- return false;
+ ++NumExpanded;
+ MadeChange = true;
+ }
+ }
+ EverMadeChange |= MadeChange;
}
- // Iteratively expand branches until we reach a fixed point.
- bool MadeChange = false;
- while (expandBranches(BlockOffsets))
- MadeChange = true;
-
- return MadeChange;
-}
-
-/// Returns an instance of the Branch Selection Pass
-FunctionPass *llvm::createMSP430BranchSelectionPass() {
- return new MSP430BSel();
+ BlockSizes.clear();
+ return true;
}
Removed: llvm/trunk/test/CodeGen/MSP430/BranchSelector.ll
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/CodeGen/MSP430/BranchSelector.ll?rev=279246&view=auto
==============================================================================
--- llvm/trunk/test/CodeGen/MSP430/BranchSelector.ll (original)
+++ llvm/trunk/test/CodeGen/MSP430/BranchSelector.ll (removed)
@@ -1,588 +0,0 @@
-; RUN: llc < %s -march=msp430 | FileCheck %s
-target datalayout = "e-m:e-p:16:16-i32:16:32-a:16-n8:16"
-target triple = "msp430"
-
- at reg = common global i16 0, align 2
-
-define void @WriteBurstPATable(i16 %count) #0 {
-entry:
- br label %while.cond
-
-while.cond:
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- %v0 = load volatile i16, i16* @reg, align 2
- %lnot = icmp eq i16 %v0, 0
-
-; This BB should be split and all branches should be expanded.
-; CHECK-LABEL: .LBB0_1:
-; CHECK: jne .LBB0_2
-; CHECK: br #.LBB0_1
-; CHECK: .LBB0_2:
-; CHECK: br #.LBB0_4
-; CHECK: .LBB0_3:
-
- br i1 %lnot, label %while.cond, label %while.end
-
-while.end:
- %i.0.i.0.1822 = load volatile i16, i16* @reg, align 1
- %cmp23 = icmp ult i16 %i.0.i.0.1822, %count
- br i1 %cmp23, label %for.body, label %for.end
-
-for.body:
- br label %while.cond6
-
-while.cond6:
- %0 = load volatile i16, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 19, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- br label %for.inc
-
-for.inc:
- %1 = load volatile i16, i16* @reg, align 2
- %cmp = icmp ult i16 %1, %count
-
-; This branch should be expanded.
-; CHECK-LABEL: .LBB0_4:
-; CHECK: jhs .LBB0_5
-; CHECK: br #.LBB0_3
-; CHECK: .LBB0_5:
-
- br i1 %cmp, label %for.body, label %for.end
-
-for.end:
- ret void
-}
-
-define void @WriteSinglePATable() #0 {
-entry:
- br label %begin
-begin:
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- store volatile i16 13, i16* @reg, align 2
- store volatile i16 17, i16* @reg, align 2
- store volatile i16 11, i16* @reg, align 2
- %v2 = load volatile i16, i16* @reg, align 2
- %lnot = icmp eq i16 %v2, 0
-
-; This branch should not be expanded
-; CHECK-LABEL: .LBB1_1:
-; CHECK: jeq .LBB1_1
-; CHECK: BB#2:
-; CHECK: ret
- br i1 %lnot, label %begin, label %end
-
-end:
- ret void
-}
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