diff options
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 17 |
1 files changed, 6 insertions, 11 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 28fe0697357d..f20080c8f108 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -1164,19 +1164,20 @@ SDValue DAGCombiner::reassociateOpsCommutative(unsigned Opc, const SDLoc &DL, SDValue N01 = N0.getOperand(1); if (DAG.isConstantIntBuildVectorOrConstantInt(peekThroughBitcasts(N01))) { + SDNodeFlags NewFlags; + if (N0.getOpcode() == ISD::ADD && N0->getFlags().hasNoUnsignedWrap() && + Flags.hasNoUnsignedWrap()) + NewFlags.setNoUnsignedWrap(true); + if (DAG.isConstantIntBuildVectorOrConstantInt(peekThroughBitcasts(N1))) { // Reassociate: (op (op x, c1), c2) -> (op x, (op c1, c2)) if (SDValue OpNode = DAG.FoldConstantArithmetic(Opc, DL, VT, {N01, N1})) - return DAG.getNode(Opc, DL, VT, N00, OpNode); + return DAG.getNode(Opc, DL, VT, N00, OpNode, NewFlags); return SDValue(); } if (TLI.isReassocProfitable(DAG, N0, N1)) { // Reassociate: (op (op x, c1), y) -> (op (op x, y), c1) // iff (op x, c1) has one use - SDNodeFlags NewFlags; - if (N0.getOpcode() == ISD::ADD && N0->getFlags().hasNoUnsignedWrap() && - Flags.hasNoUnsignedWrap()) - NewFlags.setNoUnsignedWrap(true); SDValue OpNode = DAG.getNode(Opc, SDLoc(N0), VT, N00, N1, NewFlags); return DAG.getNode(Opc, DL, VT, OpNode, N01, NewFlags); } @@ -22265,12 +22266,6 @@ SDValue DAGCombiner::visitEXTRACT_VECTOR_ELT(SDNode *N) { IndexC->getAPIntValue().uge(VecVT.getVectorNumElements())) return DAG.getUNDEF(ScalarVT); - // extract_vector_elt(freeze(x)), idx -> freeze(extract_vector_elt(x)), idx - if (VecOp.hasOneUse() && VecOp.getOpcode() == ISD::FREEZE) { - return DAG.getFreeze(DAG.getNode(ISD::EXTRACT_VECTOR_ELT, DL, ScalarVT, - VecOp.getOperand(0), Index)); - } - // extract_vector_elt (build_vector x, y), 1 -> y if (((IndexC && VecOp.getOpcode() == ISD::BUILD_VECTOR) || VecOp.getOpcode() == ISD::SPLAT_VECTOR) && |