[PATCH] D104247: [DAGCombine] reassoc flag shouldn't enable contract

[Michael Berg via Phabricator via llvm-commits]

mcberg2017 added inline comments.


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Comment at: llvm/lib/CodeGen/SelectionDAG/DAGCombiner.cpp:13258
+    bool CanFuse = Options.UnsafeFPMath || N->getFlags().hasAllowContract();
     // fold (fsub (fma x, y, (fmul u, v)), z)
     //   -> (fma x, y (fma u, v, (fneg z)))
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Some of these patterns below have operands/operations which change order, they should be audited and checked reassoc FMF to enable.  Perhaps a follow on change?


Repository:
  rG LLVM Github Monorepo

CHANGES SINCE LAST ACTION
  https://reviews.llvm.org/D104247/new/

https://reviews.llvm.org/D104247