https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99155
Andrew Pinski <pinskia at gcc dot gnu.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution|--- |INVALID --- Comment #1 from Andrew Pinski <pinskia at gcc dot gnu.org> --- You are compiling with no options which for GCC means -O0. The code generation is not going to change that much for -O0. -O2 -m32 produces almost the exact same code for GCC as Microsoft's compiler (slightly different because GCC stays away from using al/ah in some cases because of tuning).