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Allow some reloads to be folded in multi-use cases. Specifically testl r, r -> cmpl [mem], 0.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@44479 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng
2007-12-01 02:07:52 +00:00
parent 790e11cdff
commit e62f97c094
13 changed files with 259 additions and 32 deletions
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12
lib/Target/Alpha/AlphaRegisterInfo.h
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@@ -51,11 +51,23 @@ struct AlphaRegisterInfo : public AlphaGenRegisterInfo {
MachineInstr* foldMemoryOperand(MachineInstr *MI, unsigned OpNum,
int FrameIndex) const;
MachineInstr* foldMemoryOperand(MachineInstr* MI,
SmallVectorImpl<unsigned> &UseOps,
int FrameIndex) const {
return 0;
}
MachineInstr* foldMemoryOperand(MachineInstr* MI, unsigned OpNum,
MachineInstr* LoadMI) const {
return 0;
}
MachineInstr* foldMemoryOperand(MachineInstr* MI,
SmallVectorImpl<unsigned> &UseOps,
MachineInstr* LoadMI) const {
return 0;
}
void copyRegToReg(MachineBasicBlock &MBB, MachineBasicBlock::iterator MBBI,
unsigned DestReg, unsigned SrcReg,
const TargetRegisterClass *DestRC,