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| author | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-07-18 05:31:59 +0000 |
|---|---|---|
| committer | Jakob Stoklund Olesen <stoklund@2pi.dk> | 2011-07-18 05:31:59 +0000 |
| commit | 7941350101bdfa3b016dd8a5347a92064947dd31 (patch) | |
| tree | 051096206ab78a2835e440a3c47d47b4522ff84c /lib/CodeGen/InlineSpiller.cpp | |
| parent | d13243096709a581208d461af1b91e44158fd416 (diff) | |
| download | external_llvm-7941350101bdfa3b016dd8a5347a92064947dd31.zip external_llvm-7941350101bdfa3b016dd8a5347a92064947dd31.tar.gz external_llvm-7941350101bdfa3b016dd8a5347a92064947dd31.tar.bz2 | |
Fix PR10387.
When trying to rematerialize a value before an instruction that has an
early-clobber redefine of the virtual register, make sure to look up the
correct value number.
Early-clobber defs are moved one slot back, so getBaseIndex is needed to
find the used value number.
Bugpoint was unable to reduce the test case for this, see PR10388.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@135378 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/CodeGen/InlineSpiller.cpp')
| -rw-r--r-- | lib/CodeGen/InlineSpiller.cpp | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/CodeGen/InlineSpiller.cpp b/lib/CodeGen/InlineSpiller.cpp index 5547f73..f0f6987 100644 --- a/lib/CodeGen/InlineSpiller.cpp +++ b/lib/CodeGen/InlineSpiller.cpp @@ -637,7 +637,7 @@ void InlineSpiller::markValueUsed(LiveInterval *LI, VNInfo *VNI) { bool InlineSpiller::reMaterializeFor(LiveInterval &VirtReg, MachineBasicBlock::iterator MI) { SlotIndex UseIdx = LIS.getInstructionIndex(MI).getUseIndex(); - VNInfo *ParentVNI = VirtReg.getVNInfoAt(UseIdx); + VNInfo *ParentVNI = VirtReg.getVNInfoAt(UseIdx.getBaseIndex()); if (!ParentVNI) { DEBUG(dbgs() << "\tadding <undef> flags: "); |