[Bug target/116287] __builtin_ia32_bzhi_si() ignores side effects of its arguments

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116287

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> ---
Created attachment 58870
  --> https://gcc.gnu.org/bugzilla/attachment.cgi?id=58870&action=edit
gcc15-pr116287.patch

Untested fix.