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Drop the REDEF_BY_EC VNInfo flag.

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A live range that has an early clobber tied redef now looks like a
normal tied redef, except the early clobber def uses the early clobber
slot.

This is enough to handle any strange interference problems.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@149769 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Jakob Stoklund Olesen
2012-02-04 05:51:25 +00:00
parent 7e899cbb91
commit 0aad7d274d
4 changed files with 2 additions and 51 deletions
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2
lib/CodeGen/LiveIntervalAnalysis.cpp
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@@ -432,8 +432,6 @@ exit:
bool Extend = ValNo != 0;
if (!Extend)
ValNo = interval.getNextValue(start, VNInfoAllocator);
if (Extend && MO.isEarlyClobber())
ValNo->setHasRedefByEC(true);
LiveRange LR(start, end, ValNo);
interval.addRange(LR);
DEBUG(dbgs() << " +" << LR << '\n');