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| author | Eric Christopher <echristo@apple.com> | 2011-02-20 05:04:42 +0000 |
|---|---|---|
| committer | Eric Christopher <echristo@apple.com> | 2011-02-20 05:04:42 +0000 |
| commit | ac6b001f564556dab8f4543f6ed0a47ecd0afaf1 (patch) | |
| tree | 61b899578ba3992427c6891f2938801569fcf4ca /llvm/lib/Target | |
| parent | a32b8d78016e57fd72e86cbf8bf69fb048fdea8c (diff) | |
| download | bcm5719-llvm-ac6b001f564556dab8f4543f6ed0a47ecd0afaf1.tar.gz bcm5719-llvm-ac6b001f564556dab8f4543f6ed0a47ecd0afaf1.zip | |
If both operands are loads from stores in memory we can't use movlpd/movlps
since one needs to be a register operand. Just use movss instead of forcing
an operand into a register.
Fixes PR9239
llvm-svn: 126072
Diffstat (limited to 'llvm/lib/Target')
| -rw-r--r-- | llvm/lib/Target/X86/X86ISelLowering.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/llvm/lib/Target/X86/X86ISelLowering.cpp b/llvm/lib/Target/X86/X86ISelLowering.cpp index d1bf08cac20..27024b4e9e5 100644 --- a/llvm/lib/Target/X86/X86ISelLowering.cpp +++ b/llvm/lib/Target/X86/X86ISelLowering.cpp @@ -5472,6 +5472,10 @@ SDValue getMOVLP(SDValue &Op, DebugLoc &dl, SelectionDAG &DAG, bool HasSSE2) { if (MayFoldVectorLoad(V1) && MayFoldIntoStore(Op)) CanFoldLoad = true; + // Both of them can't be memory operations though. + if (MayFoldVectorLoad(V1) && MayFoldVectorLoad(V2)) + CanFoldLoad = false; + if (CanFoldLoad) { if (HasSSE2 && NumElems == 2) return getTargetShuffleNode(X86ISD::MOVLPD, dl, VT, V1, V2, DAG); |
