[PATCH] D15429: Fix bug with FMA Mutate and register classes

[Kyle Butt via llvm-commits]

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This was causing bad code gen and assembly that won't assemble, as
mixed altivec and vsx code would end up with a vsx high register
assigned to an altivec instruction, which won't work. Constraining the
classes allows the optimization to proceed.


Repository:
  rL LLVM

http://reviews.llvm.org/D15429

Files:
  lib/Target/PowerPC/PPCVSXFMAMutate.cpp
  test/CodeGen/PowerPC/fma-mutate-register-constraint.ll

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