[Bug rtl-optimization/122170] [15 Regression] gcc 15.2.0 (and gcc 15.1.0 as well) - ICE upon try to build CMSIS_DSP Library with and Optimization on

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=122170

avieira at gcc dot gnu.org changed:

           What    |Removed                     |Added
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                 CC|                            |avieira at gcc dot gnu.org

--- Comment #16 from avieira at gcc dot gnu.org ---
FWIW we traced down an ICE in gcc-15 for arm-none-eabi when compiling:
$ cat t.c
long b;
long a(long c) { return __builtin_arm_qsub(0, c); }
void d() { b = b > 0 ? b : a(b); }
$ arm-none-eabi-gcc -mcpu=cortex-m4 -O2 t.c -S

I can also confirm applying this patch on gcc-15 fixes it, but I've not ran any
regressions. I assume you'll do that anyway :)