[PATCH] D13161: [PATCH, PR24373] Combine shifts for x86

[Evgeny Stupachenko via llvm-commits]

evstupac added a comment.

In http://reviews.llvm.org/D13161#255982, @RKSimon wrote:

> Do you have any before/after perf timings?


Yes. Spec2000 performance is almost flat.
Unit performance tests get up to 40% gain.
The patch fixes regression in PR24373.


Repository:
  rL LLVM

http://reviews.llvm.org/D13161