• Merged to latest code base and compiled with -O3 and PGO
• Collected stats for SPECInt and SPECFP benchmarks (SPEC2017) with baseline and patch.

• With the feature enabled, found performance gain for SPEC benchmarks, e.g. 2.1% for perlbench_r and 1.6% for povray_r.

Collected stats below for SPECInt and SPECFP benchmarks (SPEC2017) with this feature enabled, compiled with -O3 and PGO.

Thanks @nemanjai 's review. Addressed all the comments and updated the test cases accordingly.

Addressed @nemanjai 's review comment.

Thanks @lei for the review. Updated the patch to r

1. Resolve the indentation issues
2. Modify the variable name to be consistent with current naming convention.

@jsji Yes, please ignore diff 216684. Thanks you for the remind.

Thanks @efriedma for the review and remind.

ping

ping

After re-basing the patch with latest master ToT, there is a LIT failure for the KnowCRBitSpill.ll. As per discussed and reviewed in the meeting, the CRSET test case behavior change is as expected. The test case check logic is updated accordingly.

Thanks all for the review!

Ping..