gcc/testsuite/gcc.target/arc/mspfp.c

/* { dg-do compile } */
/* { dg-skip-if "FPX is not an ARC HS extension" { archs } } */
/* { dg-options "-O2 -mspfp" } */

float i;

int f (void)
{
        i *= 2.0;
}

/* { dg-final { scan-assembler "fadd" } } */