[PATCH] Lower FNEG ( FABS (x) ) -> FNABS (x) [X86 codegen] PR20578

[Sanjay Patel]

Closed by commit rL218822 (authored by @spatel).

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D5201

Files:
  llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
  llvm/trunk/test/CodeGen/X86/fnabs.ll
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