[PATCH] [AArch64] Turn on FP Load Balancing by Default for Cortex-A53

[Z. Zheng]

Hi apazos, mcrosier, t.p.northover,

We havd found that the FP Load Balancing pass designed for Cortex-A57 does not hurt Cortex-A53 performance. It would be helpful in the scenario where "-mcpu=cortex-a53" is used for Cortex-A57 hardware.

Will make this pass and it's test case target agnostic in the next patch.

http://reviews.llvm.org/D6008

Files:
  lib/Target/AArch64/AArch64TargetMachine.cpp
  test/CodeGen/AArch64/aarch64-a57-fp-load-balancing.ll
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