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| author | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-11-06 14:34:19 +0000 |
|---|---|---|
| committer | Simon Pilgrim <llvm-dev@redking.me.uk> | 2017-11-06 14:34:19 +0000 |
| commit | 14450720e63895a34b487a6afd8ba6aedca12220 (patch) | |
| tree | 03d0c9160c7676458ee8478db997e60ba7bbeda5 /llvm/lib | |
| parent | 13dc13ef098fd3d69769a63cdf9c88bd112be6bf (diff) | |
| download | bcm5719-llvm-14450720e63895a34b487a6afd8ba6aedca12220.tar.gz bcm5719-llvm-14450720e63895a34b487a6afd8ba6aedca12220.zip | |
[X86][SSE] Combine EXTRACT_VECTOR_ELT with combineExtractWithShuffle before XFormVExtractWithShuffleIntoLoad
combineExtractWithShuffle can handle more complex shuffles/bitcasts than we can with the equivalent code in XFormVExtractWithShuffleIntoLoad.
Mainly a compile time improvement now (combineExtractWithShuffle combines will have always failed late on inside XFormVExtractWithShuffleIntoLoad), and will let us merge combineExtractVectorElt_SSE in a future commit.
llvm-svn: 317481
Diffstat (limited to 'llvm/lib')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index 85fee294ea3..42b78852382 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -30485,10 +30485,10 @@ static SDValue combineExtractWithShuffle(SDNode *N, SelectionDAG &DAG, static SDValue combineExtractVectorElt(SDNode *N, SelectionDAG &DAG, TargetLowering::DAGCombinerInfo &DCI, const X86Subtarget &Subtarget) { - if (SDValue NewOp = XFormVExtractWithShuffleIntoLoad(N, DAG, DCI)) + if (SDValue NewOp = combineExtractWithShuffle(N, DAG, DCI, Subtarget)) return NewOp; - if (SDValue NewOp = combineExtractWithShuffle(N, DAG, DCI, Subtarget)) + if (SDValue NewOp = XFormVExtractWithShuffleIntoLoad(N, DAG, DCI)) return NewOp; SDValue InputVector = N->getOperand(0); |
