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Fixed some tests to avoid LiveIntervals::getInstructionFromIndex(..) overhead where possible. Thanks to Jakob for the suggestions.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@114798 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Lang Hames
2010-09-26 03:37:09 +00:00
parent a6c1dbd541
commit cec2945f30
3 changed files with 8 additions and 9 deletions
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10
lib/CodeGen/SimpleRegisterCoalescing.cpp
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@ -349,10 +349,9 @@ bool SimpleRegisterCoalescing::RemoveCopyByCommutingDef(const CoalescerPair &CP,
VNInfo *AValNo = ALR->valno;
// If other defs can reach uses of this def, then it's not safe to perform
// the optimization.
MachineInstr *DefMI = li_->getInstructionFromIndex(AValNo->def);
if (AValNo->isPHIDef() || DefMI == 0 || AValNo->isUnused() ||
AValNo->hasPHIKill())
if (AValNo->isPHIDef() || AValNo->isUnused() || AValNo->hasPHIKill())
return false;
MachineInstr *DefMI = li_->getInstructionFromIndex(AValNo->def);
if (!DefMI)
return false;
const TargetInstrDesc &TID = DefMI->getDesc();
@ -649,10 +648,11 @@ bool SimpleRegisterCoalescing::ReMaterializeTrivialDef(LiveInterval &SrcInt,
VNInfo *ValNo = SrcLR->valno;
// If other defs can reach uses of this def, then it's not safe to perform
// the optimization.
if (ValNo->isPHIDef() || li_->getInstructionFromIndex(ValNo->def)==0 ||
ValNo->isUnused() || ValNo->hasPHIKill())
if (ValNo->isPHIDef() || ValNo->isUnused() || ValNo->hasPHIKill())
return false;
MachineInstr *DefMI = li_->getInstructionFromIndex(ValNo->def);
if (!DefMI)
return false;
assert(DefMI && "Defining instruction disappeared");
const TargetInstrDesc &TID = DefMI->getDesc();
if (!TID.isAsCheapAsAMove())