gcc/testsuite/gcc.dg/ppc-fmadd-3.c

   1 /* { dg-do compile { target powerpc*-*-* } } */
   2 /* { dg-options "-O2" } */
   3 /* { dg-final { scan-assembler-not "f(add|sub|mul)" } } */
   4
   5 void foo(double *a, double *b, double *c, double *d)
   6 {
   7 #if 0
   8   a[1] =  b[1] - c[1] * d[1];           // fneg, fmadd without fast-math
   9 #endif
  10   a[3] = -b[3] - c[3] * d[3];           // fneg, fmsub without fast-math
  11 #if 0
  12   a[5] = -( b[5] - c[5] * d[5]);        // fneg, fnmadd without fast-math
  13 #endif
  14   a[7] = -(-b[7] - c[7] * d[7]);        // fneg, fnmsub without fast-math
  15   a[11] =  b[11] + c[11] * -d[11];      // fneg, fmadd without fast-math
  16   a[13] = -b[13] + c[13] * -d[13];      // fneg, fmsub without fast-math
  17   a[15] = -( b[15] + c[15] * -d[15]);   // fneg, fnmadd without fast-math
  18   a[17] = -(-b[17] + c[17] * -d[17]);   // fneg, fnmsub without fast-math
  19 }
  20
  21 void foos(float *a, float *b, float *c, float *d)
  22 {
  23 #if 0
  24   a[1] =  b[1] - c[1] * d[1];           // fneg, fmadd without fast-math
  25 #endif
  26   a[3] = -b[3] - c[3] * d[3];           // fneg, fmsub without fast-math
  27 #if 0
  28   a[5] = -( b[5] - c[5] * d[5]);        // fneg, fnmadd without fast-math
  29 #endif
  30   a[7] = -(-b[7] - c[7] * d[7]);        // fneg, fnmsub without fast-math
  31   a[11] =  b[11] + c[11] * -d[11];      // fneg, fmadd without fast-math
  32   a[13] = -b[13] + c[13] * -d[13];      // fneg, fmsub without fast-math
  33   a[15] = -( b[15] + c[15] * -d[15]);   // fneg, fnmadd without fast-math
  34   a[17] = -(-b[17] + c[17] * -d[17]);   // fneg, fnmsub without fast-math
  35 }
  36