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| author | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2018-08-15 17:04:58 +0000 |
|---|---|---|
| committer | Krzysztof Parzyszek <kparzysz@codeaurora.org> | 2018-08-15 17:04:58 +0000 |
| commit | 3b097b4d3e8cdefdc581d215110a4b5fb4279e1f (patch) | |
| tree | 4cbf23305b839fa738b30a9a954d611605a538b3 /llvm/lib/CodeGen | |
| parent | 712d42f53d1325340d9f8cdfd4f5f964b1431f96 (diff) | |
| download | bcm5719-llvm-3b097b4d3e8cdefdc581d215110a4b5fb4279e1f.tar.gz bcm5719-llvm-3b097b4d3e8cdefdc581d215110a4b5fb4279e1f.zip | |
[RegisterCoalescer] Ensure that both registers have subranges if one does
llvm-svn: 339792
Diffstat (limited to 'llvm/lib/CodeGen')
| -rw-r--r-- | llvm/lib/CodeGen/RegisterCoalescer.cpp | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/llvm/lib/CodeGen/RegisterCoalescer.cpp b/llvm/lib/CodeGen/RegisterCoalescer.cpp index c6ac86f59de..e33429bfca7 100644 --- a/llvm/lib/CodeGen/RegisterCoalescer.cpp +++ b/llvm/lib/CodeGen/RegisterCoalescer.cpp @@ -876,10 +876,13 @@ bool RegisterCoalescer::removeCopyByCommutingDef(const CoalescerPair &CP, // Extend BValNo by merging in IntA live segments of AValNo. Val# definition // is updated. BumpPtrAllocator &Allocator = LIS->getVNInfoAllocator(); - if (IntB.hasSubRanges()) { + if (IntA.hasSubRanges() || IntB.hasSubRanges()) { if (!IntA.hasSubRanges()) { LaneBitmask Mask = MRI->getMaxLaneMaskForVReg(IntA.reg); IntA.createSubRangeFrom(Allocator, Mask, IntA); + } else if (!IntB.hasSubRanges()) { + LaneBitmask Mask = MRI->getMaxLaneMaskForVReg(IntB.reg); + IntB.createSubRangeFrom(Allocator, Mask, IntB); } SlotIndex AIdx = CopyIdx.getRegSlot(true); for (LiveInterval::SubRange &SA : IntA.subranges()) { |
