From 411bd29eea3c360d5b48a18a17b5e87f5671af0e Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Sun, 17 Jul 2011 15:36:56 +0000 Subject: Vendor import of llvm trunk r135360: http://llvm.org/svn/llvm-project/llvm/trunk@135360 --- lib/CodeGen/LiveRangeEdit.cpp | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'lib/CodeGen/LiveRangeEdit.cpp') diff --git a/lib/CodeGen/LiveRangeEdit.cpp b/lib/CodeGen/LiveRangeEdit.cpp index 052abad57e16..b385fb36bbf1 100644 --- a/lib/CodeGen/LiveRangeEdit.cpp +++ b/lib/CodeGen/LiveRangeEdit.cpp @@ -298,10 +298,16 @@ void LiveRangeEdit::eliminateDeadDefs(SmallVectorImpl &Dead, if (NumComp <= 1) continue; ++NumFracRanges; + bool IsOriginal = VRM.getOriginal(LI->reg) == LI->reg; DEBUG(dbgs() << NumComp << " components: " << *LI << '\n'); SmallVector Dups(1, LI); for (unsigned i = 1; i != NumComp; ++i) { Dups.push_back(&createFrom(LI->reg, LIS, VRM)); + // If LI is an original interval that hasn't been split yet, make the new + // intervals their own originals instead of referring to LI. The original + // interval must contain all the split products, and LI doesn't. + if (IsOriginal) + VRM.setIsSplitFromReg(Dups.back()->reg, 0); if (delegate_) delegate_->LRE_DidCloneVirtReg(Dups.back()->reg, LI->reg); } -- cgit v1.2.3