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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-11-15 20:55:53 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2010-11-15 20:55:53 +0000 |
| commit | a284aa1657d08390209b87f57782936e45d562ba (patch) | |
| tree | e3f4852e0723f418a684860dff944573d509773e /lib/CodeGen/LiveIntervalAnalysis.cpp | |
| parent | 68257e61eb6e7d528759bd7830db47d409dace89 (diff) | |
Fix PR8612 in the standard spiller as well.
The live range of a register defined by an early clobber starts at the use slot,
not the def slot.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@119183 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/LiveIntervalAnalysis.cpp')
| -rw-r--r-- | lib/CodeGen/LiveIntervalAnalysis.cpp | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/lib/CodeGen/LiveIntervalAnalysis.cpp b/lib/CodeGen/LiveIntervalAnalysis.cpp index aa2f965887..b77d43fe9a 100644 --- a/lib/CodeGen/LiveIntervalAnalysis.cpp +++ b/lib/CodeGen/LiveIntervalAnalysis.cpp @@ -1136,11 +1136,14 @@ rewriteInstructionForSpills(const LiveInterval &li, const VNInfo *VNI, rewriteImplicitOps(li, MI, NewVReg, vrm); // Reuse NewVReg for other reads. + bool HasEarlyClobber = false; for (unsigned j = 0, e = Ops.size(); j != e; ++j) { MachineOperand &mopj = MI->getOperand(Ops[j]); mopj.setReg(NewVReg); if (mopj.isImplicit()) rewriteImplicitOps(li, MI, NewVReg, vrm); + if (mopj.isEarlyClobber()) + HasEarlyClobber = true; } if (CreatedNewVReg) { @@ -1199,7 +1202,8 @@ rewriteInstructionForSpills(const LiveInterval &li, const VNInfo *VNI, } } if (HasDef) { - LiveRange LR(index.getDefIndex(), index.getStoreIndex(), + LiveRange LR(HasEarlyClobber ? index.getUseIndex() : index.getDefIndex(), + index.getStoreIndex(), nI.getNextValue(SlotIndex(), 0, VNInfoAllocator)); DEBUG(dbgs() << " +" << LR); nI.addRange(LR); |