[Bug middle-end/102126] Wrong optimization of FP multiplication and division by 1 and -1 with -ftrapping-math when an underflow is possible

[vincent-gcc at vinc17 dot net via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102126

--- Comment #2 from Vincent Lefèvre <vincent-gcc at vinc17 dot net> ---
In the testcase, I forgot

#pragma STDC FP_CONTRACT OFF

Anyway, it is currently ignored by GCC.