diff options
| 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 | 893a882d0944ac0b7dc22aecf8c649fb4dd7d316 (patch) | |
| tree | 6f617a0d826aaea60d5492997ad15fbc0041e182 | |
| parent | ebccf0891a2f6b75c2ac8de97557ca0cf5ad61c3 (diff) | |
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
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@126072 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index d1bf08cac2..27024b4e9e 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/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); |