Dehao Chen 3ecb35bc13 Use profile info to adjust loop unroll threshold. ...

Summary:
For flat loop, even if it is hot, it is not a good idea to unroll in runtime, thus we set a lower partial unroll threshold.
For hot loop, we set a higher unroll threshold and allows expensive tripcount computation to allow more aggressive unrolling.

Reviewers: davidxl, mzolotukhin

Subscribers: sanjoy, mehdi_amini, llvm-commits

Differential Revision: https://reviews.llvm.org/D26527

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@287186 91177308-0d34-0410-b5e6-96231b3b80d8

2016-11-17 01:17:02 +00:00

..

llvm

Use profile info to adjust loop unroll threshold.

2016-11-17 01:17:02 +00:00

llvm-c

Kill deprecated attribute API

2016-11-06 07:48:46 +00:00