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| author | Evan Cheng <evan.cheng@apple.com> | 2008-09-25 23:35:16 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2008-09-25 23:35:16 +0000 |
| commit | 9dbe45c00061a38521b8921cfbc6aa7c48d93d73 (patch) | |
| tree | 8a30e33c087ecda2d14f45d47713051e774968a7 /llvm/lib/Target/X86/X86ISelLowering.cpp | |
| parent | 0c1b884df1f958964a2ecde0f915912b2378832c (diff) | |
| download | bcm5719-llvm-9dbe45c00061a38521b8921cfbc6aa7c48d93d73.tar.gz bcm5719-llvm-9dbe45c00061a38521b8921cfbc6aa7c48d93d73.zip | |
Prefer movlhps over punpcklqdq, etc. in more cases.
llvm-svn: 56627
Diffstat (limited to 'llvm/lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index fc97c4edd0b..8b5104f7c70 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -3942,17 +3942,17 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) { else if (isIdentityMask(PermMask.getNode(), true)) return V2; + // Canonicalize movddup shuffles. + if (V2IsUndef && Subtarget->hasSSE2() && + X86::isMOVDDUPMask(PermMask.getNode())) + return CanonicalizeMovddup(Op, V1, PermMask, DAG, Subtarget->hasSSE3()); + if (isSplatMask(PermMask.getNode())) { if (isMMX || NumElems < 4) return Op; // Promote it to a v4{if}32 splat. return PromoteSplat(Op, DAG, Subtarget->hasSSE2()); } - // Canonicalize movddup shuffles. - if (V2IsUndef && Subtarget->hasSSE2() && - X86::isMOVDDUPMask(PermMask.getNode())) - return CanonicalizeMovddup(Op, V1, PermMask, DAG, Subtarget->hasSSE3()); - // If the shuffle can be profitably rewritten as a narrower shuffle, then // do it! if (VT == MVT::v8i16 || VT == MVT::v16i8) { |
