Attachment 6996 Details for Bug 15384 – benchmark for inlines

benchmark for inlines

test.c (text/x-csrc), 2.17 KB, created by OndrejBilka on 2013-04-22 08:32:07 UTC

(hide)

Description:

Filename:

MIME Type:

Creator: OndrejBilka

Created: 2013-04-22 08:32:07 UTC

Size: 2.17 KB

patch

obsolete

>#include <stdint.h>
>#include <math.h>
>#if defined __AVX__ || defined SSE2AVX
># define MOVD "vmovd"
>#else
># define MOVD "movd"
>#endif
>#define EXTRACT_WORDS64(i, d)                                                 \
>  do {                                                                        \
>    int64_t i_;                                                               \
>    asm (MOVD " %1, %0" : "=rm" (i_) : "x" ((double) (d)));                   \
>    (i) = i_;                                                                 \
>  } while (0)
>typedef union
>{
>  double value;
>  struct
>  {
>    uint32_t lsw;
>    uint32_t msw;
>  } parts;
>  uint64_t word;
>} ieee_double_shape_type;
># define GET_HIGH_WORD(i,d)                                     \
>  do {                                                            \
>    ieee_double_shape_type gh_u;                                  \
>    gh_u.value = (d);                                             \
>    (i) = gh_u.parts.msw;                                         \
>  } while (0)
>
>int finite0(double x)
>{
>  int32_t hx;
>  GET_HIGH_WORD(hx,x);
>  return (int)((uint32_t)((hx&0x7fffffff)-0x7ff00000)>>31);
>}
>int finite1(double x)
>{
>  int32_t hx;
>  GET_HIGH_WORD(hx,x);
>  return (int)((uint32_t)((hx&0x7ff00000)-0x7ff00000)>>31);
>}
>int finite2(double x)
>{
>  int64_t lx;
>  EXTRACT_WORDS64(lx,x);
>  return (int)((uint64_t)((lx&INT64_C(0x7ff0000000000000))-INT64_C(0x7ff0000000000000))>>63);
>}
>uint64_t finite3(double x)
>{
>  int64_t lx;
>  EXTRACT_WORDS64(lx,x);
>  return (lx&INT64_C(0x7ff0000000000000))!=INT64_C(0x7ff0000000000000);
>}
>int finite4(double x)
>{
>  uint64_t lx;
>  EXTRACT_WORDS64(lx,x);
>  lx=lx>>52;
>  return ((lx&0x7ff)!=0x7ff);
>
>}
>int finite5(double x)
>{
>  double y=x-x;
>  return y==y;
>}
>int finite6(double x)
>{
>  return __builtin_finite(x);
>}
>
>
>int finite7(double x)
>{
>  uint64_t lx;
>  EXTRACT_WORDS64(lx,x);
>  lx=lx>>52;
>  return (((lx+1)&0x7ff));
>}
>
>double finite_wrap(double x) __attribute__((noinline,noclone));
>double finite_wrap(double x){
>	if(finite(x)) return 0;
>	else return x;
>}
>
>int main(){
>
>  int i;
>	int r;
>  double x=3;
>  double cnt=0;
>  for(i=0;i<100000000;i++) {
>    cnt+=finite_wrap(x);
>    x+=0.323;
>  }
>	if (cnt==1)
>  return 1;
>	else return 0;
>}

Actions: View

Attachments on bug 15384: 6991 | 6992 | 6993 | 6994 | 6995 | 6996