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| author | Craig Topper <craig.topper@intel.com> | 2018-01-06 06:08:04 +0000 |
|---|---|---|
| committer | Craig Topper <craig.topper@intel.com> | 2018-01-06 06:08:04 +0000 |
| commit | 8c2ea74e74752399d00a84fcfe831e1e312088dd (patch) | |
| tree | f28d1dcf599c51199595c1d363b452301c353c99 /llvm/lib/Target | |
| parent | af1d257571f29bbfebf64fe5314bb41475191aad (diff) | |
| download | bcm5719-llvm-8c2ea74e74752399d00a84fcfe831e1e312088dd.tar.gz bcm5719-llvm-8c2ea74e74752399d00a84fcfe831e1e312088dd.zip | |
[X86] Call lowerShuffleAsRepeatedMaskAndLanePermute from lowerV4I64VectorShuffle.
llvm-svn: 321929
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index c518b354471..dab97501b85 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -13309,6 +13309,12 @@ static SDValue lowerV4I64VectorShuffle(const SDLoc &DL, ArrayRef<int> Mask, lowerVectorShuffleWithUNPCK(DL, MVT::v4i64, Mask, V1, V2, DAG)) return V; + // Try to create an in-lane repeating shuffle mask and then shuffle the + // the results into the target lanes. + if (SDValue V = lowerShuffleAsRepeatedMaskAndLanePermute( + DL, MVT::v4i64, V1, V2, Mask, Subtarget, DAG)) + return V; + // Try to simplify this by merging 128-bit lanes to enable a lane-based // shuffle. However, if we have AVX2 and either inputs are already in place, // we will be able to shuffle even across lanes the other input in a single |
