57 lines
961 B
C
57 lines
961 B
C
/* { dg-do run } */
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/* { dg-options "-O2 -fdump-tree-dce1-details -lm" } */
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/* { dg-message "note: function call is shrink-wrapped into error conditions\." "Missing conditional dce" {target "*-*-*"} 15 } */
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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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#include <stdio.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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