diff options
| 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 | 4dcc8a373d23cb5e9aa83c27f2c7ada95ed10708 (patch) | |
| tree | 71bca397d7de3bf0b390f9e85b166c280febd86d | |
| parent | 789ce77c6a90747aab392e01f30601d55a95fe3a (diff) | |
| download | llvm-4dcc8a373d23cb5e9aa83c27f2c7ada95ed10708.tar.gz llvm-4dcc8a373d23cb5e9aa83c27f2c7ada95ed10708.tar.bz2 llvm-4dcc8a373d23cb5e9aa83c27f2c7ada95ed10708.tar.xz | |
Prefer movlhps over punpcklqdq, etc. in more cases.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56627 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 10 | ||||
| -rw-r--r-- | test/CodeGen/X86/vec_set-9.ll | 2 |
2 files changed, 6 insertions, 6 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index fc97c4edd0..8b5104f7c7 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/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) { diff --git a/test/CodeGen/X86/vec_set-9.ll b/test/CodeGen/X86/vec_set-9.ll index 38f729fbc8..5c1b8f5dac 100644 --- a/test/CodeGen/X86/vec_set-9.ll +++ b/test/CodeGen/X86/vec_set-9.ll @@ -1,5 +1,5 @@ ; RUN: llvm-as < %s | llc -march=x86-64 | grep movd | count 1 -; RUN: llvm-as < %s | llc -march=x86-64 | grep {punpcklqdq.*%xmm0, %xmm0} +; RUN: llvm-as < %s | llc -march=x86-64 | grep {movlhps.*%xmm0, %xmm0} define <2 x i64> @test3(i64 %A) nounwind { entry: |