diff options
| author | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2010-09-02 02:35:51 +0000 |
|---|---|---|
| committer | Bruno Cardoso Lopes <bruno.cardoso@gmail.com> | 2010-09-02 02:35:51 +0000 |
| commit | d00bfe1f8dded563fa32a045d6d74ec1c25427dd (patch) | |
| tree | a79b38ef72e82917c4a80cd48d9b74132291537c /lib/Target/X86/X86ISelLowering.cpp | |
| parent | 1f58741aabd00545468f4ecf29db3dba8e0bd6ac (diff) | |
become more strict about when it's safe to use X86ISD::MOVLPS
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@112799 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'lib/Target/X86/X86ISelLowering.cpp')
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 852d339d73..7acd8932fc 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -5082,10 +5082,10 @@ SDValue getMOVLP(SDValue &Op, DebugLoc &dl, SelectionDAG &DAG, bool HasSSE2) { SDValue TmpV1 = V1; SDValue TmpV2 = V2; - // Trivial case, when V2 is a load. - if (TmpV2.getOpcode() == ISD::BIT_CONVERT) + // Trivial case, when V2 comes from a load. + if (TmpV2.hasOneUse() && TmpV2.getOpcode() == ISD::BIT_CONVERT) TmpV2 = TmpV2.getOperand(0); - if (TmpV2.getOpcode() == ISD::SCALAR_TO_VECTOR) + if (TmpV2.hasOneUse() && TmpV2.getOpcode() == ISD::SCALAR_TO_VECTOR) TmpV2 = TmpV2.getOperand(0); if (MayFoldLoad(TmpV2)) CanFoldLoad = true; @@ -5095,9 +5095,9 @@ SDValue getMOVLP(SDValue &Op, DebugLoc &dl, SelectionDAG &DAG, bool HasSSE2) { // turns into: // (MOVLPSmr addr:$src1, VR128:$src2) // So, recognize this potential and also use MOVLPS or MOVLPD - if (TmpV1.getOpcode() == ISD::BIT_CONVERT) + if (TmpV1.hasOneUse() && TmpV1.getOpcode() == ISD::BIT_CONVERT) TmpV1 = TmpV1.getOperand(0); - if (MayFoldLoad(TmpV1)) + if (MayFoldLoad(TmpV1) && MayFoldIntoStore(Op)) CanFoldLoad = true; if (CanFoldLoad) { |