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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-10-06 22:13:44 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2018-10-06 22:13:44 +0000 |
| commit | 9fa1c66421666df6dce6da3a05524b5d60229be9 (patch) | |
| tree | bbf428c1c49d3954f323da12d15187bb369aeb1c /llvm/lib | |
| parent | 0dcf1cea038ebfdfc12b3d8dad10a6c0434d6ba5 (diff) | |
| download | bcm5719-llvm-9fa1c66421666df6dce6da3a05524b5d60229be9.tar.gz bcm5719-llvm-9fa1c66421666df6dce6da3a05524b5d60229be9.zip | |
[X86] getFauxShuffleMask - Handle undef + sentinel values in subvector insertion
llvm-svn: 343926
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 6ea5ee15d02..08a92944567 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -6409,7 +6409,9 @@ static bool getFauxShuffleMask(SDValue N, SmallVectorImpl<int> &Mask, Mask.push_back(i); for (int i = 0; i != (int)NumSubElts; ++i) { int M = SubMask[i]; - if (0 <= M) { + if (M < 0) { + Mask[i + InsertIdx] = M; + } else { int InputIdx = M / NumSubElts; int ExtractIdx = SubInputs[InputIdx].getConstantOperandVal(1); Mask[i + InsertIdx] = (NumElts * (1 + InputIdx)) + ExtractIdx + M; |
