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Only remat loads from immutable stack slots.

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git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45831 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Evan Cheng 2008-01-10 08:24:38 +00:00
parent a07cec9e24
commit 8480293f41
1 changed files with 2 additions and 2 deletions
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4
lib/CodeGen/LiveIntervalAnalysis.cpp
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@ -624,7 +624,7 @@ bool LiveIntervals::isReMaterializable(const LiveInterval &li,
int FrameIdx = 0;
if (!tii_->isLoadFromStackSlot(MI, FrameIdx) ||
!mf_->getFrameInfo()->isFixedObjectIndex(FrameIdx))
!mf_->getFrameInfo()->isImmutableObjectIndex(FrameIdx))
return false;
// This is a load from fixed stack slot. It can be rematerialized unless it's
@ -719,7 +719,7 @@ bool LiveIntervals::tryFoldMemoryOperand(MachineInstr* &MI,
else
LiveVariables::transferKillDeadInfo(MI, fmi, mri_);
MachineBasicBlock &MBB = *MI->getParent();
if (isSS && !mf_->getFrameInfo()->isFixedObjectIndex(Slot))
if (isSS && !mf_->getFrameInfo()->isImmutableObjectIndex(Slot))
vrm.virtFolded(Reg, MI, fmi, (VirtRegMap::ModRef)MRInfo);
vrm.transferSpillPts(MI, fmi);
vrm.transferRestorePts(MI, fmi);