[PATCH] D44091: [DAGCombiner] New sign-of-zero compliant patterns for fabs folding

[Mikhail Dvoretckii via Phabricator via llvm-commits]

mike.dvoretsky updated this revision to Diff 137184.
mike.dvoretsky added a comment.

Rebased and reuploaded with full context. Added code to propagate nsz from IR to DAG for the fneg node, as well as to retain flags during vector type legalization. Added tests for flag use on nodes and for vector type fabs folding.


https://reviews.llvm.org/D44091

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  lib/CodeGen/SelectionDAG/LegalizeVectorTypes.cpp
  lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
  test/CodeGen/X86/fabs.ll

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