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| author | Evan Cheng <evan.cheng@apple.com> | 2006-03-24 06:40:32 +0000 |
|---|---|---|
| committer | Evan Cheng <evan.cheng@apple.com> | 2006-03-24 06:40:32 +0000 |
| commit | 5217a5b58cf0c34982671ce823634daf8e2460bb (patch) | |
| tree | b4d0f4e487e0e748d991672fc70f51ca10e52d16 | |
| parent | 4822bd4308ad8abf1a7127fe81d1d462f6d7a340 (diff) | |
All v2f64 shuffle cases can be handled.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@27044 91177308-0d34-0410-b5e6-96231b3b80d8
| -rw-r--r-- | lib/Target/X86/README.txt | 4 | ||||
| -rw-r--r-- | lib/Target/X86/X86ISelLowering.cpp | 5 |
2 files changed, 8 insertions, 1 deletions
diff --git a/lib/Target/X86/README.txt b/lib/Target/X86/README.txt index 1c227d3fd1..0cf645c7a8 100644 --- a/lib/Target/X86/README.txt +++ b/lib/Target/X86/README.txt @@ -655,3 +655,7 @@ call _foo Obviously it would have been better for the first mov (or any op) to store directly %esp[0] if there are no other uses. + +//===---------------------------------------------------------------------===// + +Add more vector shuffle special cases using unpckhps and unpcklps. diff --git a/lib/Target/X86/X86ISelLowering.cpp b/lib/Target/X86/X86ISelLowering.cpp index 4e209e4554..540fc11c1e 100644 --- a/lib/Target/X86/X86ISelLowering.cpp +++ b/lib/Target/X86/X86ISelLowering.cpp @@ -2329,7 +2329,10 @@ SDOperand X86TargetLowering::LowerOperation(SDOperand Op, SelectionDAG &DAG) { return DAG.getNode(ISD::VECTOR_SHUFFLE, VT, V1, DAG.getNode(ISD::UNDEF, V1.getValueType()), PermMask); - } else if (NumElems == 2 || X86::isSHUFPMask(PermMask.Val)) { + } else if (NumElems == 2) { + // All v2f64 cases are handled. + return SDOperand(); + } else if (X86::isSHUFPMask(PermMask.Val)) { SDOperand Elt = PermMask.getOperand(0); if (cast<ConstantSDNode>(Elt)->getValue() >= NumElems) { // Swap the operands and change mask. |