Viewing file:  cdce1.c (1.54 KB) -rw-r--r--
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/* { dg-do run } */
/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -fdump-tree-optimized -lm" } */
/* { dg-require-effective-target int32plus } */
/* { dg-require-effective-target large_double } */
/* { dg-final { scan-tree-dump "cdce1.c:17: \[^\n\r]* function call is shrink-wrapped into error conditions\." "cdce" } } */
/* { dg-final { scan-tree-dump "pow \\(\[^\n\r]*\\); \\\[tail call\\\]" "optimized" } } */
#include <stdlib.h>
#include <math.h>
#include <errno.h>
int total_err_count = 0;
double foo_opt (int x, double y) __attribute__((noinline));
double foo_opt (int x, double y)
{
double yy = 0;
errno = 0;
yy = pow (x, y * y);
return 0;
}
double foo (int x, double y) __attribute__((noinline));
double foo (int x, double y)
{
double yy = 0;
errno = 0;
yy = pow (x, y * y);
return yy;
}
int test (double (*fp)(int x, double y))
{
int i,x;
x = 127;
for (i = 30; i < 300; i++)
{
fp (x, i);
if (errno)
total_err_count ++;
}
x = -300;
for (i = 100; i < 300; i++)
{
fp (x, i);
if (errno)
total_err_count ++;
}
x = 65577;
for (i = 60; i < 200; i++)
{
fp (x, i);
if (errno)
total_err_count ++;
}
x = 65577 * 127;
for (i = 1; i < 100; i++)
{
fp (x, i);
if (errno)
total_err_count ++;
}
return total_err_count;
}
int main ()
{
int en1, en2;
total_err_count = 0;
en1 = test (foo_opt);
total_err_count = 0;
en2 = test (foo);
if (en1 != en2)
abort ();
return 0;
}
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