[llvm] [X86][CodeGen] Return true when MIR is changed after optimizeCompareInstr (PR #91723)
Phoebe Wang via llvm-commits
llvm-commits at lists.llvm.org
Fri May 10 07:49:39 PDT 2024
================
@@ -5169,7 +5169,7 @@ bool X86InstrInfo::optimizeCompareInstr(MachineInstr &CmpInstr, Register SrcReg,
// Fall through to optimize Cmp if Cmp is CMPrr or CMPri.
if (NewOpcode == X86::CMP64rm || NewOpcode == X86::CMP32rm ||
NewOpcode == X86::CMP16rm || NewOpcode == X86::CMP8rm)
- return false;
+ return true;
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phoebewang wrote:
Why CMPrm don't need to check EFLAGS before removing?
https://github.com/llvm/llvm-project/pull/91723
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