[Bug target/125609] [17 Regression] internal compiler error: in single_pred_edge, at basic-block.h:337 bootstrapping GCC on LoongArch since r17-1279

[xry111 at gcc dot gnu.org via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=125609

Xi Ruoyao <xry111 at gcc dot gnu.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|[17 Regression] internal    |[17 Regression] internal
                   |compiler error: in          |compiler error: in
                   |single_pred_edge, at        |single_pred_edge, at
                   |basic-block.h:337           |basic-block.h:337
                   |bootstrapping GCC on        |bootstrapping GCC on
                   |LoongArch                   |LoongArch since r17-1279

--- Comment #3 from Xi Ruoyao <xry111 at gcc dot gnu.org> ---
f6103f3a1e42fe4db15f3c1d96847cd4a4829e4e is the first bad commit
commit f6103f3a1e42fe4db15f3c1d96847cd4a4829e4e
Author: Kevin Stefanov <kevinstefano...@gmail.com>
Date:   Wed Jun 3 22:46:02 2026 -0600

    [PATCH v4] Replace certain uses of TEST_HARD_REG_BIT in loops with better
alternatives