[llvm] r237611 - MachineInstr: Change return value of getOpcode() to unsigned.

Matthias Braun matze at braunis.de
Mon May 18 13:27:55 PDT 2015


Author: matze
Date: Mon May 18 15:27:55 2015
New Revision: 237611

URL: http://llvm.org/viewvc/llvm-project?rev=237611&view=rev
Log:
MachineInstr: Change return value of getOpcode() to unsigned.

This was previously returning int. However there are no negative opcode
numbers and more importantly this was needlessly different from
MCInstrDesc::getOpcode() (which even is the value returned here) and
SDValue::getOpcode()/SDNode::getOpcode().

Modified:
    llvm/trunk/include/llvm/CodeGen/MachineInstr.h
    llvm/trunk/include/llvm/Target/TargetInstrInfo.h
    llvm/trunk/lib/CodeGen/MachineVerifier.cpp
    llvm/trunk/lib/CodeGen/PrologEpilogInserter.cpp
    llvm/trunk/lib/CodeGen/ShrinkWrap.cpp
    llvm/trunk/lib/CodeGen/TargetInstrInfo.cpp
    llvm/trunk/lib/Target/AArch64/AArch64AdvSIMDScalarPass.cpp
    llvm/trunk/lib/Target/AArch64/AArch64ConditionOptimizer.cpp
    llvm/trunk/lib/Target/AArch64/AArch64FrameLowering.cpp
    llvm/trunk/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp
    llvm/trunk/lib/Target/ARM/ARMBaseInstrInfo.cpp
    llvm/trunk/lib/Target/ARM/ARMBaseInstrInfo.h
    llvm/trunk/lib/Target/ARM/ARMConstantIslandPass.cpp
    llvm/trunk/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
    llvm/trunk/lib/Target/SystemZ/SystemZInstrInfo.cpp
    llvm/trunk/lib/Target/X86/X86CallFrameOptimization.cpp
    llvm/trunk/lib/Target/X86/X86FrameLowering.cpp

Modified: llvm/trunk/include/llvm/CodeGen/MachineInstr.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/CodeGen/MachineInstr.h?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/include/llvm/CodeGen/MachineInstr.h (original)
+++ llvm/trunk/include/llvm/CodeGen/MachineInstr.h Mon May 18 15:27:55 2015
@@ -271,9 +271,8 @@ public:
   /// MachineInstr.
   const MCInstrDesc &getDesc() const { return *MCID; }
 
-  /// getOpcode - Returns the opcode of this MachineInstr.
-  ///
-  int getOpcode() const { return MCID->Opcode; }
+  /// Returns the opcode of this MachineInstr.
+  unsigned getOpcode() const { return MCID->Opcode; }
 
   /// Access to explicit operands of the instruction.
   ///

Modified: llvm/trunk/include/llvm/Target/TargetInstrInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/include/llvm/Target/TargetInstrInfo.h?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/include/llvm/Target/TargetInstrInfo.h (original)
+++ llvm/trunk/include/llvm/Target/TargetInstrInfo.h Mon May 18 15:27:55 2015
@@ -53,7 +53,7 @@ class TargetInstrInfo : public MCInstrIn
   TargetInstrInfo(const TargetInstrInfo &) = delete;
   void operator=(const TargetInstrInfo &) = delete;
 public:
-  TargetInstrInfo(int CFSetupOpcode = -1, int CFDestroyOpcode = -1)
+  TargetInstrInfo(unsigned CFSetupOpcode = ~0u, unsigned CFDestroyOpcode = ~0u)
     : CallFrameSetupOpcode(CFSetupOpcode),
       CallFrameDestroyOpcode(CFDestroyOpcode) {
   }
@@ -109,8 +109,8 @@ public:
   /// between operating with a frame pointer and operating without, through the
   /// use of these two instructions.
   ///
-  int getCallFrameSetupOpcode() const { return CallFrameSetupOpcode; }
-  int getCallFrameDestroyOpcode() const { return CallFrameDestroyOpcode; }
+  unsigned getCallFrameSetupOpcode() const { return CallFrameSetupOpcode; }
+  unsigned getCallFrameDestroyOpcode() const { return CallFrameDestroyOpcode; }
 
   /// Returns the actual stack pointer adjustment made by an instruction
   /// as part of a call sequence. By default, only call frame setup/destroy
@@ -1244,7 +1244,7 @@ public:
   }
 
 private:
-  int CallFrameSetupOpcode, CallFrameDestroyOpcode;
+  unsigned CallFrameSetupOpcode, CallFrameDestroyOpcode;
 };
 
 } // End llvm namespace

Modified: llvm/trunk/lib/CodeGen/MachineVerifier.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/MachineVerifier.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/MachineVerifier.cpp (original)
+++ llvm/trunk/lib/CodeGen/MachineVerifier.cpp Mon May 18 15:27:55 2015
@@ -1716,8 +1716,8 @@ namespace {
 /// by a FrameDestroy <n>, stack adjustments are identical on all
 /// CFG edges to a merge point, and frame is destroyed at end of a return block.
 void MachineVerifier::verifyStackFrame() {
-  int FrameSetupOpcode   = TII->getCallFrameSetupOpcode();
-  int FrameDestroyOpcode = TII->getCallFrameDestroyOpcode();
+  unsigned FrameSetupOpcode   = TII->getCallFrameSetupOpcode();
+  unsigned FrameDestroyOpcode = TII->getCallFrameDestroyOpcode();
 
   SmallVector<StackStateOfBB, 8> SPState;
   SPState.resize(MF->getNumBlockIDs());

Modified: llvm/trunk/lib/CodeGen/PrologEpilogInserter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/PrologEpilogInserter.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/PrologEpilogInserter.cpp (original)
+++ llvm/trunk/lib/CodeGen/PrologEpilogInserter.cpp Mon May 18 15:27:55 2015
@@ -248,12 +248,12 @@ void PEI::calculateCallsInformation(Mach
   bool AdjustsStack = MFI->adjustsStack();
 
   // Get the function call frame set-up and tear-down instruction opcode
-  int FrameSetupOpcode   = TII.getCallFrameSetupOpcode();
-  int FrameDestroyOpcode = TII.getCallFrameDestroyOpcode();
+  unsigned FrameSetupOpcode = TII.getCallFrameSetupOpcode();
+  unsigned FrameDestroyOpcode = TII.getCallFrameDestroyOpcode();
 
   // Early exit for targets which have no call frame setup/destroy pseudo
   // instructions.
-  if (FrameSetupOpcode == -1 && FrameDestroyOpcode == -1)
+  if (FrameSetupOpcode == ~0u && FrameDestroyOpcode == ~0u)
     return;
 
   std::vector<MachineBasicBlock::iterator> FrameSDOps;
@@ -864,8 +864,8 @@ void PEI::replaceFrameIndices(MachineBas
   const TargetInstrInfo &TII = *Fn.getSubtarget().getInstrInfo();
   const TargetRegisterInfo &TRI = *Fn.getSubtarget().getRegisterInfo();
   const TargetFrameLowering *TFI = Fn.getSubtarget().getFrameLowering();
-  int FrameSetupOpcode   = TII.getCallFrameSetupOpcode();
-  int FrameDestroyOpcode = TII.getCallFrameDestroyOpcode();
+  unsigned FrameSetupOpcode = TII.getCallFrameSetupOpcode();
+  unsigned FrameDestroyOpcode = TII.getCallFrameDestroyOpcode();
 
   if (RS && !FrameIndexVirtualScavenging) RS->enterBasicBlock(BB);
 

Modified: llvm/trunk/lib/CodeGen/ShrinkWrap.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/ShrinkWrap.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/ShrinkWrap.cpp (original)
+++ llvm/trunk/lib/CodeGen/ShrinkWrap.cpp Mon May 18 15:27:55 2015
@@ -106,9 +106,9 @@ class ShrinkWrap : public MachineFunctio
   /// Frequency of the Entry block.
   uint64_t EntryFreq;
   /// Current opcode for frame setup.
-  int FrameSetupOpcode;
+  unsigned FrameSetupOpcode;
   /// Current opcode for frame destroy.
-  int FrameDestroyOpcode;
+  unsigned FrameDestroyOpcode;
   /// Entry block.
   const MachineBasicBlock *Entry;
 

Modified: llvm/trunk/lib/CodeGen/TargetInstrInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/CodeGen/TargetInstrInfo.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/CodeGen/TargetInstrInfo.cpp (original)
+++ llvm/trunk/lib/CodeGen/TargetInstrInfo.cpp Mon May 18 15:27:55 2015
@@ -652,8 +652,8 @@ int TargetInstrInfo::getSPAdjust(const M
   bool StackGrowsDown =
     TFI->getStackGrowthDirection() == TargetFrameLowering::StackGrowsDown;
 
-  int FrameSetupOpcode = getCallFrameSetupOpcode();
-  int FrameDestroyOpcode = getCallFrameDestroyOpcode();
+  unsigned FrameSetupOpcode = getCallFrameSetupOpcode();
+  unsigned FrameDestroyOpcode = getCallFrameDestroyOpcode();
 
   if (MI->getOpcode() != FrameSetupOpcode &&
       MI->getOpcode() != FrameDestroyOpcode)

Modified: llvm/trunk/lib/Target/AArch64/AArch64AdvSIMDScalarPass.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64AdvSIMDScalarPass.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64AdvSIMDScalarPass.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64AdvSIMDScalarPass.cpp Mon May 18 15:27:55 2015
@@ -158,7 +158,7 @@ static unsigned getSrcFromCopy(const Mac
 // getTransformOpcode - For any opcode for which there is an AdvSIMD equivalent
 // that we're considering transforming to, return that AdvSIMD opcode. For all
 // others, return the original opcode.
-static int getTransformOpcode(unsigned Opc) {
+static unsigned getTransformOpcode(unsigned Opc) {
   switch (Opc) {
   default:
     break;
@@ -179,7 +179,7 @@ static int getTransformOpcode(unsigned O
 }
 
 static bool isTransformable(const MachineInstr *MI) {
-  int Opc = MI->getOpcode();
+  unsigned Opc = MI->getOpcode();
   return Opc != getTransformOpcode(Opc);
 }
 
@@ -286,8 +286,8 @@ void AArch64AdvSIMDScalar::transformInst
   DEBUG(dbgs() << "Scalar transform: " << *MI);
 
   MachineBasicBlock *MBB = MI->getParent();
-  int OldOpc = MI->getOpcode();
-  int NewOpc = getTransformOpcode(OldOpc);
+  unsigned OldOpc = MI->getOpcode();
+  unsigned NewOpc = getTransformOpcode(OldOpc);
   assert(OldOpc != NewOpc && "transform an instruction to itself?!");
 
   // Check if we need a copy for the source registers.

Modified: llvm/trunk/lib/Target/AArch64/AArch64ConditionOptimizer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64ConditionOptimizer.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64ConditionOptimizer.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64ConditionOptimizer.cpp Mon May 18 15:27:55 2015
@@ -92,7 +92,7 @@ class AArch64ConditionOptimizer : public
 public:
   // Stores immediate, compare instruction opcode and branch condition (in this
   // order) of adjusted comparison.
-  typedef std::tuple<int, int, AArch64CC::CondCode> CmpInfo;
+  typedef std::tuple<int, unsigned, AArch64CC::CondCode> CmpInfo;
 
   static char ID;
   AArch64ConditionOptimizer() : MachineFunctionPass(ID) {}
@@ -215,7 +215,7 @@ static AArch64CC::CondCode getAdjustedCm
 // operator and condition code.
 AArch64ConditionOptimizer::CmpInfo AArch64ConditionOptimizer::adjustCmp(
     MachineInstr *CmpMI, AArch64CC::CondCode Cmp) {
-  int Opc = CmpMI->getOpcode();
+  unsigned Opc = CmpMI->getOpcode();
 
   // CMN (compare with negative immediate) is an alias to ADDS (as
   // "operand - negative" == "operand + positive")
@@ -244,7 +244,7 @@ AArch64ConditionOptimizer::CmpInfo AArch
 void AArch64ConditionOptimizer::modifyCmp(MachineInstr *CmpMI,
     const CmpInfo &Info) {
   int Imm;
-  int Opc;
+  unsigned Opc;
   AArch64CC::CondCode Cmp;
   std::tie(Imm, Opc, Cmp) = Info;
 

Modified: llvm/trunk/lib/Target/AArch64/AArch64FrameLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64FrameLowering.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64FrameLowering.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64FrameLowering.cpp Mon May 18 15:27:55 2015
@@ -161,7 +161,7 @@ void AArch64FrameLowering::eliminateCall
   const AArch64InstrInfo *TII =
       static_cast<const AArch64InstrInfo *>(MF.getSubtarget().getInstrInfo());
   DebugLoc DL = I->getDebugLoc();
-  int Opc = I->getOpcode();
+  unsigned Opc = I->getOpcode();
   bool IsDestroy = Opc == TII->getCallFrameDestroyOpcode();
   uint64_t CalleePopAmount = IsDestroy ? I->getOperand(1).getImm() : 0;
 

Modified: llvm/trunk/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp (original)
+++ llvm/trunk/lib/Target/AArch64/AArch64LoadStoreOptimizer.cpp Mon May 18 15:27:55 2015
@@ -494,7 +494,7 @@ AArch64LoadStoreOpt::findMatchingInsn(Ma
   MachineInstr *FirstMI = I;
   ++MBBI;
 
-  int Opc = FirstMI->getOpcode();
+  unsigned Opc = FirstMI->getOpcode();
   bool MayLoad = FirstMI->mayLoad();
   bool IsUnscaled = isUnscaledLdst(Opc);
   unsigned Reg = FirstMI->getOperand(0).getReg();
@@ -954,7 +954,7 @@ bool AArch64LoadStoreOpt::optimizeBlock(
     MachineInstr *MI = MBBI;
     // Do update merging. It's simpler to keep this separate from the above
     // switch, though not strictly necessary.
-    int Opc = MI->getOpcode();
+    unsigned Opc = MI->getOpcode();
     switch (Opc) {
     default:
       // Just move on to the next instruction.

Modified: llvm/trunk/lib/Target/ARM/ARMBaseInstrInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMBaseInstrInfo.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMBaseInstrInfo.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMBaseInstrInfo.cpp Mon May 18 15:27:55 2015
@@ -1402,7 +1402,7 @@ ARMBaseInstrInfo::duplicate(MachineInstr
 bool ARMBaseInstrInfo::produceSameValue(const MachineInstr *MI0,
                                         const MachineInstr *MI1,
                                         const MachineRegisterInfo *MRI) const {
-  int Opcode = MI0->getOpcode();
+  unsigned Opcode = MI0->getOpcode();
   if (Opcode == ARM::t2LDRpci ||
       Opcode == ARM::t2LDRpci_pic ||
       Opcode == ARM::tLDRpci ||
@@ -1739,7 +1739,7 @@ llvm::getInstrPredicate(const MachineIns
 }
 
 
-int llvm::getMatchingCondBranchOpcode(int Opc) {
+unsigned llvm::getMatchingCondBranchOpcode(unsigned Opc) {
   if (Opc == ARM::B)
     return ARM::Bcc;
   if (Opc == ARM::tB)

Modified: llvm/trunk/lib/Target/ARM/ARMBaseInstrInfo.h
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMBaseInstrInfo.h?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMBaseInstrInfo.h (original)
+++ llvm/trunk/lib/Target/ARM/ARMBaseInstrInfo.h Mon May 18 15:27:55 2015
@@ -439,7 +439,7 @@ static inline bool isPushOpcode(int Opc)
 /// register by reference.
 ARMCC::CondCodes getInstrPredicate(const MachineInstr *MI, unsigned &PredReg);
 
-int getMatchingCondBranchOpcode(int Opc);
+unsigned getMatchingCondBranchOpcode(unsigned Opc);
 
 /// Determine if MI can be folded into an ARM MOVCC instruction, and return the
 /// opcode of the SSA instruction representing the conditional MI.

Modified: llvm/trunk/lib/Target/ARM/ARMConstantIslandPass.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMConstantIslandPass.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMConstantIslandPass.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMConstantIslandPass.cpp Mon May 18 15:27:55 2015
@@ -240,8 +240,8 @@ namespace {
       MachineInstr *MI;
       unsigned MaxDisp : 31;
       bool isCond : 1;
-      int UncondBr;
-      ImmBranch(MachineInstr *mi, unsigned maxdisp, bool cond, int ubr)
+      unsigned UncondBr;
+      ImmBranch(MachineInstr *mi, unsigned maxdisp, bool cond, unsigned ubr)
         : MI(mi), MaxDisp(maxdisp), isCond(cond), UncondBr(ubr) {}
     };
 
@@ -746,7 +746,7 @@ initializeFunctionInfo(const std::vector
       if (I->isDebugValue())
         continue;
 
-      int Opc = I->getOpcode();
+      unsigned Opc = I->getOpcode();
       if (I->isBranch()) {
         bool isCond = false;
         unsigned Bits = 0;

Modified: llvm/trunk/lib/Target/ARM/ARMLoadStoreOptimizer.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/ARM/ARMLoadStoreOptimizer.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/ARM/ARMLoadStoreOptimizer.cpp (original)
+++ llvm/trunk/lib/Target/ARM/ARMLoadStoreOptimizer.cpp Mon May 18 15:27:55 2015
@@ -103,7 +103,7 @@ namespace {
                            DebugLoc dl, unsigned Base, unsigned WordOffset,
                            ARMCC::CondCodes Pred, unsigned PredReg);
     bool MergeOps(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
-                  int Offset, unsigned Base, bool BaseKill, int Opcode,
+                  int Offset, unsigned Base, bool BaseKill, unsigned Opcode,
                   ARMCC::CondCodes Pred, unsigned PredReg, unsigned Scratch,
                   DebugLoc dl,
                   ArrayRef<std::pair<unsigned, bool> > Regs,
@@ -116,14 +116,14 @@ namespace {
                         int Offset,
                         unsigned Base,
                         bool BaseKill,
-                        int Opcode,
+                        unsigned Opcode,
                         ARMCC::CondCodes Pred,
                         unsigned PredReg,
                         unsigned Scratch,
                         DebugLoc dl,
                         SmallVectorImpl<MachineBasicBlock::iterator> &Merges);
     void MergeLDR_STR(MachineBasicBlock &MBB, unsigned SIndex, unsigned Base,
-                      int Opcode, unsigned Size,
+                      unsigned Opcode, unsigned Size,
                       ARMCC::CondCodes Pred, unsigned PredReg,
                       unsigned Scratch, MemOpQueue &MemOps,
                       SmallVectorImpl<MachineBasicBlock::iterator> &Merges);
@@ -159,7 +159,7 @@ static bool definesCPSR(const MachineIns
 }
 
 static int getMemoryOpOffset(const MachineInstr *MI) {
-  int Opcode = MI->getOpcode();
+  unsigned Opcode = MI->getOpcode();
   bool isAM3 = Opcode == ARM::LDRD || Opcode == ARM::STRD;
   unsigned NumOperands = MI->getDesc().getNumOperands();
   unsigned OffField = MI->getOperand(NumOperands-3).getImm();
@@ -186,7 +186,7 @@ static int getMemoryOpOffset(const Machi
   return Offset;
 }
 
-static int getLoadStoreMultipleOpcode(int Opcode, ARM_AM::AMSubMode Mode) {
+static int getLoadStoreMultipleOpcode(unsigned Opcode, ARM_AM::AMSubMode Mode) {
   switch (Opcode) {
   default: llvm_unreachable("Unhandled opcode!");
   case ARM::LDRi12:
@@ -274,7 +274,7 @@ static int getLoadStoreMultipleOpcode(in
 namespace llvm {
   namespace ARM_AM {
 
-AMSubMode getLoadStoreMultipleSubMode(int Opcode) {
+AMSubMode getLoadStoreMultipleSubMode(unsigned Opcode) {
   switch (Opcode) {
   default: llvm_unreachable("Unhandled opcode!");
   case ARM::LDMIA_RET:
@@ -478,7 +478,7 @@ bool
 ARMLoadStoreOpt::MergeOps(MachineBasicBlock &MBB,
                           MachineBasicBlock::iterator MBBI,
                           int Offset, unsigned Base, bool BaseKill,
-                          int Opcode, ARMCC::CondCodes Pred,
+                          unsigned Opcode, ARMCC::CondCodes Pred,
                           unsigned PredReg, unsigned Scratch, DebugLoc dl,
                           ArrayRef<std::pair<unsigned, bool> > Regs,
                           ArrayRef<unsigned> ImpDefs) {
@@ -730,7 +730,7 @@ void ARMLoadStoreOpt::MergeOpsUpdate(Mac
                                      unsigned memOpsBegin, unsigned memOpsEnd,
                                      unsigned insertAfter, int Offset,
                                      unsigned Base, bool BaseKill,
-                                     int Opcode,
+                                     unsigned Opcode,
                                      ARMCC::CondCodes Pred, unsigned PredReg,
                                      unsigned Scratch,
                                      DebugLoc dl,
@@ -829,7 +829,7 @@ void ARMLoadStoreOpt::MergeOpsUpdate(Mac
 /// load / store multiple instructions.
 void
 ARMLoadStoreOpt::MergeLDR_STR(MachineBasicBlock &MBB, unsigned SIndex,
-                         unsigned Base, int Opcode, unsigned Size,
+                         unsigned Base, unsigned Opcode, unsigned Size,
                          ARMCC::CondCodes Pred, unsigned PredReg,
                          unsigned Scratch, MemOpQueue &MemOps,
                          SmallVectorImpl<MachineBasicBlock::iterator> &Merges) {
@@ -1110,7 +1110,7 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLSM
   unsigned Bytes = getLSMultipleTransferSize(MI);
   unsigned PredReg = 0;
   ARMCC::CondCodes Pred = getInstrPredicate(MI, PredReg);
-  int Opcode = MI->getOpcode();
+  unsigned Opcode = MI->getOpcode();
   DebugLoc dl = MI->getDebugLoc();
 
   // Can't use an updating ld/st if the base register is also a dest
@@ -1248,7 +1248,7 @@ bool ARMLoadStoreOpt::MergeBaseUpdateLoa
   unsigned Base = MI->getOperand(1).getReg();
   bool BaseKill = MI->getOperand(1).isKill();
   unsigned Bytes = getLSMultipleTransferSize(MI);
-  int Opcode = MI->getOpcode();
+  unsigned Opcode = MI->getOpcode();
   DebugLoc dl = MI->getDebugLoc();
   bool isAM5 = (Opcode == ARM::VLDRD || Opcode == ARM::VLDRS ||
                 Opcode == ARM::VSTRD || Opcode == ARM::VSTRS);
@@ -1406,7 +1406,7 @@ static bool isMemoryOp(const MachineInst
       MI->getOperand(1).isUndef())
     return false;
 
-  int Opcode = MI->getOpcode();
+  unsigned Opcode = MI->getOpcode();
   switch (Opcode) {
   default: break;
   case ARM::VLDRS:
@@ -1597,7 +1597,7 @@ bool ARMLoadStoreOpt::LoadStoreMultipleO
   unsigned NumMemOps = 0;
   MemOpQueue MemOps;
   unsigned CurrBase = 0;
-  int CurrOpc = -1;
+  unsigned CurrOpc = ~0u;
   unsigned CurrSize = 0;
   ARMCC::CondCodes CurrPred = ARMCC::AL;
   unsigned CurrPredReg = 0;
@@ -1616,7 +1616,7 @@ bool ARMLoadStoreOpt::LoadStoreMultipleO
 
     bool isMemOp = isMemoryOp(MBBI);
     if (isMemOp) {
-      int Opcode = MBBI->getOpcode();
+      unsigned Opcode = MBBI->getOpcode();
       unsigned Size = getLSMultipleTransferSize(MBBI);
       const MachineOperand &MO = MBBI->getOperand(0);
       unsigned Reg = MO.getReg();
@@ -1753,7 +1753,7 @@ bool ARMLoadStoreOpt::LoadStoreMultipleO
       }
 
       CurrBase = 0;
-      CurrOpc = -1;
+      CurrOpc = ~0u;
       CurrSize = 0;
       CurrPred = ARMCC::AL;
       CurrPredReg = 0;

Modified: llvm/trunk/lib/Target/SystemZ/SystemZInstrInfo.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/SystemZ/SystemZInstrInfo.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/SystemZ/SystemZInstrInfo.cpp (original)
+++ llvm/trunk/lib/Target/SystemZ/SystemZInstrInfo.cpp Mon May 18 15:27:55 2015
@@ -423,7 +423,7 @@ static MachineInstr *getDef(unsigned Reg
 }
 
 // Return true if MI is a shift of type Opcode by Imm bits.
-static bool isShift(MachineInstr *MI, int Opcode, int64_t Imm) {
+static bool isShift(MachineInstr *MI, unsigned Opcode, int64_t Imm) {
   return (MI->getOpcode() == Opcode &&
           !MI->getOperand(2).getReg() &&
           MI->getOperand(3).getImm() == Imm);

Modified: llvm/trunk/lib/Target/X86/X86CallFrameOptimization.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86CallFrameOptimization.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86CallFrameOptimization.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86CallFrameOptimization.cpp Mon May 18 15:27:55 2015
@@ -128,8 +128,8 @@ bool X86CallFrameOptimization::isLegal(M
   // This is bad, and breaks SP adjustment.
   // So, check that all of the frames in the function are closed inside
   // the same block, and, for good measure, that there are no nested frames.
-  int FrameSetupOpcode = TII->getCallFrameSetupOpcode();
-  int FrameDestroyOpcode = TII->getCallFrameDestroyOpcode();
+  unsigned FrameSetupOpcode = TII->getCallFrameSetupOpcode();
+  unsigned FrameDestroyOpcode = TII->getCallFrameDestroyOpcode();
   for (MachineBasicBlock &BB : MF) {
     bool InsideFrameSequence = false;
     for (MachineInstr &MI : BB) {
@@ -214,7 +214,7 @@ bool X86CallFrameOptimization::runOnMach
   if (!isLegal(MF))
     return false;
 
-  int FrameSetupOpcode = TII->getCallFrameSetupOpcode();
+  unsigned FrameSetupOpcode = TII->getCallFrameSetupOpcode();
 
   bool Changed = false;
 
@@ -246,7 +246,7 @@ void X86CallFrameOptimization::collectCa
   const X86RegisterInfo &RegInfo = *static_cast<const X86RegisterInfo *>(
                                        MF.getSubtarget().getRegisterInfo());
   unsigned StackPtr = RegInfo.getStackRegister();
-  int FrameDestroyOpcode = TII->getCallFrameDestroyOpcode();
+  unsigned FrameDestroyOpcode = TII->getCallFrameDestroyOpcode();
 
   // We expect to enter this at the beginning of a call sequence
   assert(I->getOpcode() == TII->getCallFrameSetupOpcode());

Modified: llvm/trunk/lib/Target/X86/X86FrameLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86FrameLowering.cpp?rev=237611&r1=237610&r2=237611&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86FrameLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86FrameLowering.cpp Mon May 18 15:27:55 2015
@@ -1986,7 +1986,7 @@ eliminateCallFramePseudoInstr(MachineFun
   const X86RegisterInfo &RegInfo = *STI.getRegisterInfo();
   unsigned StackPtr = RegInfo.getStackRegister();
   bool reserveCallFrame = hasReservedCallFrame(MF);
-  int Opcode = I->getOpcode();
+  unsigned Opcode = I->getOpcode();
   bool isDestroy = Opcode == TII.getCallFrameDestroyOpcode();
   bool IsLP64 = STI.isTarget64BitLP64();
   DebugLoc DL = I->getDebugLoc();





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