[Bug tree-optimization/123207] [16 Regression] Miscompare of 526.blender_r with -O3 on x86_64 since r16-6133-gca8d97f8cb8d28

[chenglulu at loongson dot cn via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=123207

--- Comment #17 from chenglulu <chenglulu at loongson dot cn> ---
(In reply to Chen Chen from comment #14)
> On Loongarch64 I saw the same issue. Tested with gcc16-20251214 and
> gcc16-20251221 snapshots on an Loongson 3A6000 (la664 microarchitecture)
> machine, miscompare appears for gcc16-20251221 snapshot when built with "-O3
> -ffast-math" or "-Ofast". For gcc16-20251214 snapshot it is OK.

LoongArch miscompare starts since r16-6133.