[Bug target/123089] [16 regression] [x86] Excessive run time with -march=znver3

[dcb314 at hotmail dot com]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123089

--- Comment #1 from David Binderman <dcb314 at hotmail dot com> ---
I am trying a bisect. Current range is 6 commits and this 
commit:

commit 65a3849eb46df2fbac6b41ff78dae13c85387f9e
Author: Tamar Christina <tamar.christina@arm.com>
Date:   Sun Nov 30 07:29:50 2025 +0000

    vect: support vectorization of early break forced live IVs as scalar

looks likely.