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Notify the delegate before removing dead values from a live interval.

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The register allocator needs to know when the range shrinks.

llvm-svn: 128145
This commit is contained in:
Jakob Stoklund Olesen 2011-03-23 04:43:16 +00:00
parent d75298c7cd
commit 6570595e4c
1 changed files with 2 additions and 0 deletions
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2
lib/CodeGen/LiveRangeEdit.cpp
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@ -182,6 +182,8 @@ void LiveRangeEdit::eliminateDeadDefs(SmallVectorImpl<MachineInstr*> &Dead,
// Remove defined value.
if (MOI->isDef()) {
if (VNInfo *VNI = LI.getVNInfoAt(Idx)) {
if (delegate_)
delegate_->LRE_WillShrinkVirtReg(LI.reg);
LI.removeValNo(VNI);
if (LI.empty()) {
ToShrink.remove(&LI);