[Bug target/116979] [12/13/14/15 regression] fma not always used in complex product

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

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=116979
--- Comment #8 from vincenzo Innocente <vincenzo.innocente at cern dot ch> ---
for completeness: if C syntax is used gcc generates scalar code with fma

https://godbolt.org/z/4GPrrejWd

#include <complex.h>
#include <math.h>
float complex
__attribute__ ((noinline))
mulf(float complex a, float complex b) 
{
    return a*b;
}