https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106012
vincenzo Innocente <vincenzo.innocente at cern dot ch> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|rsqrtss instruction |rsqrtps and rcpps |generated even if |instructiona generated even |-mno-recip specified |if -fno-reciprocal-math | |specified Status|RESOLVED |NEW Resolution|WONTFIX |--- --- Comment #3 from vincenzo Innocente <vincenzo.innocente at cern dot ch> --- Thanks for the suggestion. -fno-reciprocal-math does indeed inhibit scalar reciprocal instructions. NOT in vectorized loop though. see https://godbolt.org/z/9eMb4Tjee