[Bug tree-optimization/109885] New: gcc does not generate movmskps and testps instructions (clang does)

[vincenzo.innocente at cern dot ch via Gcc-bugs]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109885

            Bug ID: 109885
           Summary: gcc does not generate movmskps and testps instructions
                     (clang does)
           Product: gcc
           Version: 14.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: tree-optimization
          Assignee: unassigned at gcc dot gnu.org
          Reporter: vincenzo.innocente at cern dot ch
  Target Milestone: ---

in this simple code (on avx2)

int sum(float const * x) {
   int ret = 0;
   for (int i=0; i<8; ++i) ret +=(0==x[i]);
   return ret;
}

int one(float const * x) {
   int ret = 0;
   for (int i=0; i<8; ++i) ret |=(0==x[i]);
   return ret;
}

int all(float const * x) {
   int ret = 1;
   for (int i=0; i<8; ++i) ret &=(0==x[i]);
   return ret;
}

clang uses movmskps and testps instructions, gcc does not

see for instance

https://godbolt.org/z/r11r8xoYz