[llvm-commits] [llvm] r63193 - /llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
Mon P Wang
wangmp at apple.com
Wed Jan 28 00:12:06 PST 2009
Author: wangmp
Date: Wed Jan 28 02:12:05 2009
New Revision: 63193
URL: http://llvm.org/viewvc/llvm-project?rev=63193&view=rev
Log:
Add shuffle splat pattern for x86 sse shifts.
Modified:
llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
Modified: llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/Target/X86/X86ISelLowering.cpp?rev=63193&r1=63192&r2=63193&view=diff
==============================================================================
--- llvm/trunk/lib/Target/X86/X86ISelLowering.cpp (original)
+++ llvm/trunk/lib/Target/X86/X86ISelLowering.cpp Wed Jan 28 02:12:05 2009
@@ -7678,28 +7678,32 @@
if (VT != MVT::v2i64 && VT != MVT::v4i32 && VT != MVT::v8i16)
return SDValue();
- SDValue ShAmtOp = N->getOperand(1);
- if (ShAmtOp.getOpcode() != ISD::BUILD_VECTOR)
- return SDValue();
-
- unsigned NumElts = VT.getVectorNumElements();
- unsigned i = 0;
+ SDValue ShAmtOp = N->getOperand(1);
+ MVT EltVT = VT.getVectorElementType();
SDValue BaseShAmt;
- for (; i != NumElts; ++i) {
- SDValue Arg = ShAmtOp.getOperand(i);
- if (Arg.getOpcode() == ISD::UNDEF) continue;
- BaseShAmt = Arg;
- break;
- }
- for (; i != NumElts; ++i) {
- SDValue Arg = ShAmtOp.getOperand(i);
- if (Arg.getOpcode() == ISD::UNDEF) continue;
- if (Arg != BaseShAmt) {
- return SDValue();
+ if (ShAmtOp.getOpcode() == ISD::BUILD_VECTOR) {
+ unsigned NumElts = VT.getVectorNumElements();
+ unsigned i = 0;
+ for (; i != NumElts; ++i) {
+ SDValue Arg = ShAmtOp.getOperand(i);
+ if (Arg.getOpcode() == ISD::UNDEF) continue;
+ BaseShAmt = Arg;
+ break;
}
- }
+ for (; i != NumElts; ++i) {
+ SDValue Arg = ShAmtOp.getOperand(i);
+ if (Arg.getOpcode() == ISD::UNDEF) continue;
+ if (Arg != BaseShAmt) {
+ return SDValue();
+ }
+ }
+ } else if (ShAmtOp.getOpcode() == ISD::VECTOR_SHUFFLE &&
+ isSplatMask(ShAmtOp.getOperand(2).getNode())) {
+ BaseShAmt = DAG.getNode(ISD::EXTRACT_VECTOR_ELT, EltVT, ShAmtOp,
+ DAG.getIntPtrConstant(0));
+ } else
+ return SDValue();
- MVT EltVT = VT.getVectorElementType();
if (EltVT.bitsGT(MVT::i32))
BaseShAmt = DAG.getNode(ISD::TRUNCATE, MVT::i32, BaseShAmt);
else if (EltVT.bitsLT(MVT::i32))
More information about the llvm-commits
mailing list