Viewing file:  loop-25.c (1.98 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O1 -fdump-tree-profile_estimate" } */
int foo(void);
void bla(void);
void bar(void);
void test1 (void)
{
unsigned i;
/* Only one loop should be found here. */
i = 0;
while (1)
{
i++;
if (i == 100)
break;
if (foo ())
bla ();
else
bar ();
}
}
void test2 (void)
{
unsigned i, j;
/* Two loops should be found, in this case. */
i = j = 0;
while (1)
{
j++;
foo ();
if (j < 100)
continue;
i++;
j = 0;
if (i == 100)
break;
}
}
void test3 (void)
{
unsigned i, j, k;
/* Three loops. */
i = j = k = 0;
while (1)
{
j++;
foo ();
if (j < 100)
continue;
j = 0;
k++;
if (k < 100)
continue;
k = 0;
i++;
if (i == 100)
break;
}
}
void test4 (void)
{
unsigned i, j, k;
/* Two loops with a nested subloop. */
i = j = 0;
while (1)
{
j++;
foo ();
for (k = 0; k < 100; k++)
foo ();
if (j < 100)
continue;
i++;
j = 0;
if (i == 100)
break;
}
}
void test5 (void)
{
unsigned i, j;
/* Both subloop and non-subloop back edges. */
i = j = 0;
while (1)
{
j++;
foo ();
if (j < 100)
continue;
j = 0;
i++;
if (i == 100)
break;
if (foo ())
bla ();
else
bar ();
}
}
/* { dg-final { scan-tree-dump-times "Disambiguating loop" 5 "profile_estimate" } } */
/* For the following xfail marks, see PR35629. */
/* { dg-final { scan-tree-dump-times "Found latch edge" 5 "profile_estimate" { xfail *-*-* } } } */
/* { dg-final { scan-tree-dump-times "Merged latch edges" 2 "profile_estimate" { xfail *-*-* } } } */
/* { dg-final { scan-tree-dump-times "4 loops found" 2 "profile_estimate" { xfail *-*-* } } } */
/* { dg-final { scan-tree-dump-times "3 loops found" 2 "profile_estimate" { xfail *-*-* } } } */
/* { dg-final { scan-tree-dump-times "2 loops found" 1 "profile_estimate" { xfail *-*-* } } } */
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