[PATCH] [AArch64] Enable partial unrolling and runtime unrolling for AArch64 target

[Kevin Qin]

Hi Renato,

Thanks for your review.

This patch setted PartialOptSizeThreshold to 0 to disable partial & runtime unrolling on -Os/-Oz. This is implemented in target transform info which makes it effects on aarch64 only. So for A57, the loop buffer size is always 20 at any optimization level, only the way how to use it at different optimization levels makes different.

Cheers,
Kevin

http://reviews.llvm.org/D5148

Files:
  lib/Target/AArch64/AArch64SchedA57.td
  lib/Target/AArch64/AArch64TargetTransformInfo.cpp
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