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No need recognize load from a fixed argument slot as re-materializable. LiveIntervalAnalysis already handles it as a special case.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@47522 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-02-23 01:47:44 +00:00
parent e9fabd94ab
commit b2a0abce1e
1 changed files with 0 additions and 12 deletions
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12
lib/Target/X86/X86InstrInfo.cpp
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@ -760,18 +760,6 @@ bool X86InstrInfo::isReallyTriviallyReMaterializable(MachineInstr *MI) const {
return isPICBase;
}
// If this is a load from a fixed argument slot, we know the value is
// invariant across the whole function, because we don't redefine argument
// values.
#if 0
// FIXME: This is disabled due to a remat bug. rdar://5671644
if (MI->getOperand(1).isFI()) {
const MachineFrameInfo &MFI=*MI->getParent()->getParent()->getFrameInfo();
int Idx = MI->getOperand(1).getIndex();
return MFI.isFixedObjectIndex(Idx) && MFI.isImmutableObjectIndex(Idx);
}
#endif
return false;
}
// All other instructions marked M_REMATERIALIZABLE are always trivially