diff options
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 30 |
1 files changed, 10 insertions, 20 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index c24bd0875e8..c1301163c8f 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -4732,8 +4732,7 @@ SDValue DAGCombiner::visitSRL(SDNode *N) { // fold (srl x, (trunc (and y, c))) -> (srl x, (and (trunc y), (trunc c))). if (N1.getOpcode() == ISD::TRUNCATE && N1.getOperand(0).getOpcode() == ISD::AND) { - SDValue NewOp1 = distributeTruncateThroughAnd(N1.getNode()); - if (NewOp1.getNode()) + if (SDValue NewOp1 = distributeTruncateThroughAnd(N1.getNode())) return DAG.getNode(ISD::SRL, SDLoc(N), VT, N0, NewOp1); } @@ -4742,15 +4741,12 @@ SDValue DAGCombiner::visitSRL(SDNode *N) { if (N1C && SimplifyDemandedBits(SDValue(N, 0))) return SDValue(N, 0); - if (N1C && !N1C->isOpaque()) { - SDValue NewSRL = visitShiftByConstant(N, N1C); - if (NewSRL.getNode()) + if (N1C && !N1C->isOpaque()) + if (SDValue NewSRL = visitShiftByConstant(N, N1C)) return NewSRL; - } // Attempt to convert a srl of a load into a narrower zero-extending load. - SDValue NarrowLoad = ReduceLoadWidth(N); - if (NarrowLoad.getNode()) + if (SDValue NarrowLoad = ReduceLoadWidth(N)) return NarrowLoad; // Here is a common situation. We want to optimize: @@ -5511,8 +5507,7 @@ SDValue DAGCombiner::visitVSELECT(SDNode *N) { if (N1.getOpcode() == ISD::CONCAT_VECTORS && N2.getOpcode() == ISD::CONCAT_VECTORS && ISD::isBuildVectorOfConstantSDNodes(N0.getNode())) { - SDValue CV = ConvertSelectToConcatVector(N, DAG); - if (CV.getNode()) + if (SDValue CV = ConvertSelectToConcatVector(N, DAG)) return CV; } @@ -6363,8 +6358,7 @@ SDValue DAGCombiner::visitANY_EXTEND(SDNode *N) { // fold (aext (truncate (load x))) -> (aext (smaller load x)) // fold (aext (truncate (srl (load x), c))) -> (aext (small load (x+c/n))) if (N0.getOpcode() == ISD::TRUNCATE) { - SDValue NarrowLoad = ReduceLoadWidth(N0.getNode()); - if (NarrowLoad.getNode()) { + if (SDValue NarrowLoad = ReduceLoadWidth(N0.getNode())) { SDNode* oye = N0.getNode()->getOperand(0).getNode(); if (NarrowLoad.getNode() != N0.getNode()) { CombineTo(N0.getNode(), NarrowLoad); @@ -7984,8 +7978,7 @@ SDValue DAGCombiner::visitFADD(SDNode *N) { } // enable-unsafe-fp-math // FADD -> FMA combines: - SDValue Fused = visitFADDForFMACombine(N); - if (Fused) { + if (SDValue Fused = visitFADDForFMACombine(N)) { AddToWorklist(Fused.getNode()); return Fused; } @@ -8049,8 +8042,7 @@ SDValue DAGCombiner::visitFSUB(SDNode *N) { } // FSUB -> FMA combines: - SDValue Fused = visitFSUBForFMACombine(N); - if (Fused) { + if (SDValue Fused = visitFSUBForFMACombine(N)) { AddToWorklist(Fused.getNode()); return Fused; } @@ -9037,8 +9029,7 @@ SDValue DAGCombiner::visitBRCOND(SDNode *N) { SDValue Op1 = TheXor->getOperand(1); if (Op0.getOpcode() == Op1.getOpcode()) { // Avoid missing important xor optimizations. - SDValue Tmp = visitXOR(TheXor); - if (Tmp.getNode()) { + if (SDValue Tmp = visitXOR(TheXor)) { if (Tmp.getNode() != TheXor) { DEBUG(dbgs() << "\nReplacing.8 "; TheXor->dump(&DAG); @@ -11319,8 +11310,7 @@ SDValue DAGCombiner::visitSTORE(SDNode *N) { // Try transforming a pair floating point load / store ops to integer // load / store ops. - SDValue NewST = TransformFPLoadStorePair(N); - if (NewST.getNode()) + if (SDValue NewST = TransformFPLoadStorePair(N)) return NewST; bool UseAA = CombinerAA.getNumOccurrences() > 0 ? CombinerAA |
