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| author | Sanjay Patel <spatel@rotateright.com> | 2018-12-21 21:26:30 +0000 |
|---|---|---|
| committer | Sanjay Patel <spatel@rotateright.com> | 2018-12-21 21:26:30 +0000 |
| commit | 47a6129e2682648a8450ed05edcfffb68cd9038f (patch) | |
| tree | 7bdf93c754efe7d98fcceebe42ac8554270c54a8 /llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | |
| parent | 14e0d9ed89ac50b885ef6419aa3128090d85fe3c (diff) | |
| download | bcm5719-llvm-47a6129e2682648a8450ed05edcfffb68cd9038f.tar.gz bcm5719-llvm-47a6129e2682648a8450ed05edcfffb68cd9038f.zip | |
[DAGCombiner] simplify code leading to scalarizeExtractedVectorLoad; NFC
llvm-svn: 349958
Diffstat (limited to 'llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp')
| -rw-r--r-- | llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp | 11 |
1 files changed, 5 insertions, 6 deletions
diff --git a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp index 3631a8cb861..a68980a9626 100644 --- a/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp +++ b/llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp @@ -15734,14 +15734,13 @@ SDValue DAGCombiner::visitEXTRACT_VECTOR_ELT(SDNode *N) { ExtVT = BCVT.getVectorElementType(); } - // (vextract (vN[if]M load $addr), i) -> ([if]M load $addr + i * size) + // extract (vector load $addr), i --> load $addr + i * size if (!LegalOperations && !IndexC && VecOp.hasOneUse() && ISD::isNormalLoad(VecOp.getNode()) && - !N->getOperand(1)->hasPredecessor(VecOp.getNode())) { - SDValue Index = N->getOperand(1); - if (auto *OrigLoad = dyn_cast<LoadSDNode>(VecOp)) - if (!OrigLoad->isVolatile()) - return scalarizeExtractedVectorLoad(N, VecVT, Index, OrigLoad); + !Index->hasPredecessor(VecOp.getNode())) { + auto *VecLoad = dyn_cast<LoadSDNode>(VecOp); + if (VecLoad && !VecLoad->isVolatile()) + return scalarizeExtractedVectorLoad(N, VecVT, Index, VecLoad); } // Perform only after legalization to ensure build_vector / vector_shuffle |
