[PATCH 2 of 4] Add hierarchical discriminator for vectorizer

Fri, 09 Jan 2026 22:31:06 -0800 

I would like to again ping the patch posted in 
https://gcc.gnu.org/pipermail/gcc-patches/2025-November/700704.html

Add hierarchical discriminator support for vectorized loop versioning.
Assigns copyid discriminators to distinguish vectorized and scalar versions.

gcc/ChangeLog:

        * tree-vect-loop-manip.cc (vect_loop_versioning): Assign copyid
        discriminators for vectorized and scalar loop versions.
        * tree-vect-loop.cc (vect_transform_loop): Assign copyid
        discriminators for vectorized and scalar loop versions.

gcc/testsuite/ChangeLog:

        * gcc.dg/hierarchical-discriminator-vect-version.c: New test.

Bootstrapped and regression tested on aarch64-linux-gnu with no new 
regressions. Is this OK?

Thanks,
Kugan

Attachment: 0002-AutoFDO-V4-Add-hierarchical-discriminator-for-vector.patch
Description: 0002-AutoFDO-V4-Add-hierarchical-discriminator-for-vector.patch

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