[PATCH] [X86] Teach FCOPYSIGN lowering to recognize constant magnitudes.

[Ahmed Bougacha]

REPOSITORY
  rL LLVM

http://reviews.llvm.org/D6555

Files:
  llvm/trunk/lib/Target/X86/X86ISelLowering.cpp
  llvm/trunk/test/CodeGen/X86/copysign-constant-magnitude.ll
  llvm/trunk/test/CodeGen/X86/copysign-zero.ll

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