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Remove unneeded function, since PR8156 was fixed over a year ago. 

llvm-svn: 169534
This commit is contained in:
Jakub Staszak 2012-12-06 19:05:46 +00:00
parent c91f0be499
commit 40ee5674cd
1 changed files with 1 additions and 18 deletions
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19
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -6458,23 +6458,6 @@ static bool MayFoldVectorLoad(SDValue V) {
return MayFoldLoad(V);
}
// FIXME: the version above should always be used. Since there's
// a bug where several vector shuffles can't be folded because the
// DAG is not updated during lowering and a node claims to have two
// uses while it only has one, use this version, and let isel match
// another instruction if the load really happens to have more than
// one use. Remove this version after this bug get fixed.
// rdar://8434668, PR8156
static bool RelaxedMayFoldVectorLoad(SDValue V) {
if (V.hasOneUse() && V.getOpcode() == ISD::BITCAST)
V = V.getOperand(0);
if (V.hasOneUse() && V.getOpcode() == ISD::SCALAR_TO_VECTOR)
V = V.getOperand(0);
if (ISD::isNormalLoad(V.getNode()))
return true;
return false;
}
static
SDValue getMOVDDup(SDValue &Op, DebugLoc &dl, SDValue V1, SelectionDAG &DAG) {
EVT VT = Op.getValueType();
@ -6778,7 +6761,7 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const {
return getTargetShuffleNode(X86ISD::UNPCKH, dl, VT, V1, V1, DAG);
if (isMOVDDUPMask(M, VT) && Subtarget->hasSSE3() &&
V2IsUndef && RelaxedMayFoldVectorLoad(V1))
V2IsUndef && MayFoldVectorLoad(V1))
return getMOVDDup(Op, dl, V1, DAG);
if (isMOVHLPS_v_undef_Mask(M, VT))