57 lines
1.1 KiB
C
57 lines
1.1 KiB
C
/* { dg-do run } */
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/* { dg-skip-if "doubles are floats" { "avr-*-*" } { "*" } { "" } } */
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/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details -lm" } */
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/* { dg-options "-O2 -fmath-errno -fdump-tree-cdce-details" { target *-*-netware* } } */
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/* { dg-final { scan-tree-dump "cdce2.c:17: note: function call is shrink-wrapped into error conditions\." "cdce" } }*/
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/* { dg-final { cleanup-tree-dump "cdce" } } */
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#include <stdlib.h>
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#include <math.h>
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#include <errno.h>
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int total_err_count = 0;
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double foo_opt (double y) __attribute__((noinline));
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double foo_opt (double y)
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{
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double yy = 0;
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errno = 0;
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yy = log (y);
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return 0;
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}
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double foo (double y) __attribute__((noinline));
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double foo (double y)
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{
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double yy = 0;
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errno = 0;
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yy = log (y);
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return yy;
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}
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int test (double (*fp) (double y))
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{
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int i,x;
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for (i = -100; i < 100; i++)
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{
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fp (i);
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if (errno)
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total_err_count ++;
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}
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return total_err_count;
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}
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int main ()
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{
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int en1, en2;
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double yy;
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total_err_count = 0;
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en1 = test (foo_opt);
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total_err_count = 0;
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en2 = test (foo);
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if (en1 != en2)
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abort();
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return 0;
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}
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