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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@150094 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Andrew Trick
2012-02-08 21:22:43 +00:00
parent ffea03f216
commit 1df91b0e54
8 changed files with 80 additions and 80 deletions
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14
lib/CodeGen/PeepholeOptimizer.cpp
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@ -39,7 +39,7 @@
// =>
// v1 = bitcast v0
// = v0
//
//
//===----------------------------------------------------------------------===//
#define DEBUG_TYPE "peephole-opt"
@ -124,7 +124,7 @@ FunctionPass *llvm::createPeepholeOptimizerPass() {
/// source, and if the source value is preserved as a sub-register of the
/// result, then replace all reachable uses of the source with the subreg of the
/// result.
///
///
/// Do not generate an EXTRACT that is used only in a debug use, as this changes
/// the code. Since this code does not currently share EXTRACTs, just ignore all
/// debug uses.
@ -134,7 +134,7 @@ OptimizeExtInstr(MachineInstr *MI, MachineBasicBlock *MBB,
unsigned SrcReg, DstReg, SubIdx;
if (!TII->isCoalescableExtInstr(*MI, SrcReg, DstReg, SubIdx))
return false;
if (TargetRegisterInfo::isPhysicalRegister(DstReg) ||
TargetRegisterInfo::isPhysicalRegister(SrcReg))
return false;
@ -363,7 +363,7 @@ bool PeepholeOptimizer::isMoveImmediate(MachineInstr *MI,
ImmDefRegs.insert(Reg);
return true;
}
return false;
}
@ -395,7 +395,7 @@ bool PeepholeOptimizer::FoldImmediate(MachineInstr *MI, MachineBasicBlock *MBB,
bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) {
if (DisablePeephole)
return false;
TM = &MF.getTarget();
TII = TM->getInstrInfo();
MRI = &MF.getRegInfo();
@ -408,7 +408,7 @@ bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) {
DenseMap<unsigned, MachineInstr*> ImmDefMIs;
for (MachineFunction::iterator I = MF.begin(), E = MF.end(); I != E; ++I) {
MachineBasicBlock *MBB = &*I;
bool SeenMoveImm = false;
LocalMIs.clear();
ImmDefRegs.clear();
@ -435,7 +435,7 @@ bool PeepholeOptimizer::runOnMachineFunction(MachineFunction &MF) {
Changed = true;
MII = First ? I->begin() : llvm::next(PMII);
continue;
}
}
} else if (MI->isCompare()) {
if (OptimizeCmpInstr(MI, MBB)) {
// MI is deleted.