[PATCH] D21127: Remove redundant FMUL in Newton-Raphson SQRT code

[Nikolai Bozhenov via llvm-commits]

n.bozhenov updated this revision to Diff 60661.
n.bozhenov added a comment.

Ok, I added tests to check MIR output after instruction selection for
X86 with two refinement steps and with FMA enabled. These seem to cover
all the cases not covered previously.


http://reviews.llvm.org/D21127

Files:
  lib/CodeGen/SelectionDAG/DAGCombiner.cpp
  test/CodeGen/X86/sqrt-fastmath-mir.ll
  test/CodeGen/X86/sqrt-fastmath.ll

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