[PATCH] D32872: [PowerPC] Leverage PGO data to version/expand small/large memcpy calls

[Lei Huang via Phabricator via llvm-commits]

lei created this revision.

This is the subsequent patch to https://reviews.llvm.org/D31772 which leverage pgo profiling data to make better decisions about when and under what conditions to actually perform known size memcpy call expansion and/or unknown size memcpy call versioning.

If PGO info exists and call is != cold:

- expand valid known size memcpy calls
- version unknown sized memcpy calls

If PGO info does not exists

- expand valid known size memcpy calls
- do NOT version unknown sized memcpy calls


https://reviews.llvm.org/D32872

Files:
  lib/Target/PowerPC/PPCLowerMemIntrinsics.cpp
  test/CodeGen/PowerPC/memcpy-loop-expansion.ll
  test/CodeGen/PowerPC/memcpy.nopgo.ll
  test/CodeGen/PowerPC/memcpy.pgo.cold.ll
  test/CodeGen/PowerPC/memcpy.pgo.hot.ll

-------------- next part --------------
A non-text attachment was scrubbed...
Name: D32872.97848.patch
Type: text/x-patch
Size: 25969 bytes
Desc: not available
URL: <http://lists.llvm.org/pipermail/llvm-commits/attachments/20170504/662104c7/attachment.bin>