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Refactor some code and remove the extra checks for unpckl_undef and unpckh_undef 

llvm-svn: 113043
This commit is contained in:
Bruno Cardoso Lopes 2010-09-04 00:39:43 +00:00
parent 50506787d1
commit 44578d38d3
1 changed files with 25 additions and 28 deletions
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53
llvm/lib/Target/X86/X86ISelLowering.cpp
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@ -5300,31 +5300,14 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const {
}
}
if (OptForSize && X86::isUNPCKL_v_undef_Mask(SVOp)) {
// NOTE: isPSHUFDMask can also match this mask, if speed is more
// important than size here, this will be matched by pshufd
if (VT == MVT::v4f32)
return getTargetShuffleNode(X86ISD::UNPCKLPS, dl, VT, V1, V1, DAG);
if (HasSSE2 && VT == MVT::v16i8)
return getTargetShuffleNode(X86ISD::PUNPCKLBW, dl, VT, V1, V1, DAG);
if (HasSSE2 && VT == MVT::v8i16)
return getTargetShuffleNode(X86ISD::PUNPCKLWD, dl, VT, V1, V1, DAG);
if (HasSSE2 && VT == MVT::v4i32)
return getTargetShuffleNode(X86ISD::PUNPCKLDQ, dl, VT, V1, V1, DAG);
}
if (OptForSize && X86::isUNPCKH_v_undef_Mask(SVOp)) {
// NOTE: isPSHUFDMask can also match this mask, if speed is more
// important than size here, this will be matched by pshufd
if (VT == MVT::v4f32)
return getTargetShuffleNode(X86ISD::UNPCKHPS, dl, VT, V1, V1, DAG);
if (HasSSE2 && VT == MVT::v16i8)
return getTargetShuffleNode(X86ISD::PUNPCKHBW, dl, VT, V1, V1, DAG);
if (HasSSE2 && VT == MVT::v8i16)
return getTargetShuffleNode(X86ISD::PUNPCKHWD, dl, VT, V1, V1, DAG);
if (HasSSE2 && VT == MVT::v4i32)
return getTargetShuffleNode(X86ISD::PUNPCKHDQ, dl, VT, V1, V1, DAG);
}
// NOTE: isPSHUFDMask can also match both masks below (unpckl_undef and
// unpckh_undef). Only use pshufd if speed is more important than size.
if (OptForSize && X86::isUNPCKL_v_undef_Mask(SVOp))
if (VT != MVT::v2i64 && VT != MVT::v2f64)
return getTargetShuffleNode(getUNPCKLOpcode(VT), dl, VT, V1, V1, DAG);
if (OptForSize && X86::isUNPCKH_v_undef_Mask(SVOp))
if (VT != MVT::v2i64 && VT != MVT::v2f64)
return getTargetShuffleNode(getUNPCKHOpcode(VT), dl, VT, V1, V1, DAG);
if (X86::isPSHUFDMask(SVOp)) {
// The actual implementation will match the mask in the if above and then
@ -5475,6 +5458,15 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const {
if (!isMMX && V2.getOpcode() != ISD::UNDEF && isCommutedSHUFP(SVOp))
return CommuteVectorShuffle(SVOp, DAG);
// NOTE: isPSHUFDMask can also match both masks below (unpckl_undef and
// unpckh_undef). Only use pshufd if speed is more important than size.
if (OptForSize && X86::isUNPCKL_v_undef_Mask(SVOp))
if (VT != MVT::v2i64 && VT != MVT::v2f64)
return getTargetShuffleNode(getUNPCKLOpcode(VT), dl, VT, V1, V1, DAG);
if (OptForSize && X86::isUNPCKH_v_undef_Mask(SVOp))
if (VT != MVT::v2i64 && VT != MVT::v2f64)
return getTargetShuffleNode(getUNPCKHOpcode(VT), dl, VT, V1, V1, DAG);
// The checks below are all present in isShuffleMaskLegal, but they are
// inlined here right now to enable us to directly emit target specific
// nodes, and remove one by one until they don't return Op anymore.
@ -5493,11 +5485,16 @@ X86TargetLowering::LowerVECTOR_SHUFFLE(SDValue Op, SelectionDAG &DAG) const {
isPSHUFDMask(M, VT) ||
isPSHUFHWMask(M, VT) ||
isPSHUFLWMask(M, VT) ||
isPALIGNRMask(M, VT, Subtarget->hasSSSE3()) ||
isUNPCKL_v_undef_Mask(M, VT) ||
isUNPCKH_v_undef_Mask(M, VT))
isPALIGNRMask(M, VT, Subtarget->hasSSSE3()))
return Op;
if (X86::isUNPCKL_v_undef_Mask(SVOp))
if (VT != MVT::v2i64 && VT != MVT::v2f64)
return getTargetShuffleNode(getUNPCKLOpcode(VT), dl, VT, V1, V1, DAG);
if (X86::isUNPCKH_v_undef_Mask(SVOp))
if (VT != MVT::v2i64 && VT != MVT::v2f64)
return getTargetShuffleNode(getUNPCKHOpcode(VT), dl, VT, V1, V1, DAG);
// Handle v8i16 specifically since SSE can do byte extraction and insertion.
if (VT == MVT::v8i16) {
SDValue NewOp = LowerVECTOR_SHUFFLEv8i16(Op, DAG);