gcc/testsuite/gcc.target/powerpc/ppc-fma-4.c

   1 /* { dg-do compile { target { powerpc*-*-* } } } */
   2 /* { dg-skip-if "" { powerpc*-*-darwin* } } */
   3 /* { dg-require-effective-target powerpc_altivec_ok } */
   4 /* { dg-require-effective-target powerpc_fprs } */
   5 /* { dg-skip-if "do not override -mcpu" { powerpc*-*-* } { "-mcpu=*" } { "-mcpu=power6" } } */
   6 /* { dg-options "-O3 -ftree-vectorize -mcpu=power6 -maltivec -ffast-math -ffp-contract=off" } */
   7 /* { dg-final { scan-assembler-times "vmaddfp" 1 } } */
   8 /* { dg-final { scan-assembler-times "fmadd " 1 } } */
   9 /* { dg-final { scan-assembler-times "fmadds" 1 } } */
  10 /* { dg-final { scan-assembler-times "fmsub " 1 } } */
  11 /* { dg-final { scan-assembler-times "fmsubs" 1 } } */
  12 /* { dg-final { scan-assembler-times "fnmadd " 1 } } */
  13 /* { dg-final { scan-assembler-times "fnmadds" 1 } } */
  14 /* { dg-final { scan-assembler-times "fnmsub " 1 } } */
  15 /* { dg-final { scan-assembler-times "fnmsubs" 1 } } */
  16
  17 /* Only the functions calling the builtin should generate an appropriate
  18    (a * b) + c instruction.  */
  19
  20 double
  21 builtin_fma (double b, double c, double d)
  22 {
  23   return __builtin_fma (b, c, d);                       /* fmadd */
  24 }
  25
  26 double
  27 builtin_fms (double b, double c, double d)
  28 {
  29   return __builtin_fma (b, c, -d);                      /* fmsub */
  30 }
  31
  32 double
  33 builtin_fnma (double b, double c, double d)
  34 {
  35   return - __builtin_fma (b, c, d);                     /* fnmadd */
  36 }
  37
  38 double
  39 builtin_fnms (double b, double c, double d)
  40 {
  41   return - __builtin_fma (b, c, -d);                    /* fnmsub */
  42 }
  43
  44 float
  45 builtin_fmaf (float b, float c, float d)
  46 {
  47   return __builtin_fmaf (b, c, d);                      /* fmadds */
  48 }
  49
  50 float
  51 builtin_fmsf (float b, float c, float d)
  52 {
  53   return __builtin_fmaf (b, c, -d);                     /* fmsubs */
  54 }
  55
  56 float
  57 builtin_fnmaf (float b, float c, float d)
  58 {
  59   return - __builtin_fmaf (b, c, d);                    /* fnmadds */
  60 }
  61
  62 float
  63 builtin_fnmsf (float b, float c, float d)
  64 {
  65   return - __builtin_fmaf (b, c, -d);                   /* fnmsubs */
  66 }
  67
  68 double
  69 normal_fma (double b, double c, double d)
  70 {
  71   return (b * c) + d;                                   /* fmul/fadd */
  72 }
  73
  74 float
  75 normal_fmaf (float b, float c, float d)
  76 {
  77   return (b * c) + d;                                   /* fmuls/fadds */
  78 }
  79
  80 #ifndef SIZE
  81 #define SIZE 1024
  82 #endif
  83
  84 float vfa[SIZE] __attribute__((__aligned__(32)));
  85 float vfb[SIZE] __attribute__((__aligned__(32)));
  86 float vfc[SIZE] __attribute__((__aligned__(32)));
  87 float vfd[SIZE] __attribute__((__aligned__(32)));
  88
  89 void
  90 vector_fmaf (void)
  91 {
  92   int i;
  93
  94   for (i = 0; i < SIZE; i++)
  95     vfa[i] = __builtin_fmaf (vfb[i], vfc[i], vfd[i]);   /* vaddfp */
  96 }