Viewing file:  ssa-ccp-1.c (1.29 KB) -rw-r--r--
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/* { dg-do compile } */
/* { dg-options "-O -fdump-tree-ccp1" } */
extern void link_error (void);
/* check folding */
void test1 (void)
{
unsigned int l = 3 * 4 - 5 / 2;
if (l != 10)
link_error ();
}
void test11 (void)
{
unsigned int l = (((((((3 / 2 + 2) * 4) & 7) ^ 3) % 8) << 2) + 1) >> 2;
if (l != 7)
link_error ();
}
/* cprop in a basic block */
void test111 (void)
{
unsigned int l0 = 3 / 2 + 2;
unsigned int l1 = l0 * 4;
unsigned int l2 = 7;
unsigned int l3 = l1 & l2;
unsigned int l4 = 3;
unsigned int l5 = l3 ^ l4;
unsigned int l6 = 8;
unsigned int l7 = l5 % l6;
unsigned int l8 = 2;
unsigned int l9 = l7 << l8;
unsigned int l10 = l9 + 1;
unsigned int l11 = l10 >> 2;
if (l11 != 7)
link_error ();
}
/* cprop after an if statement */
void test1111 (int p)
{
int l = 53;
if (p)
{
if ((67 + l - 25) != 95)
link_error ();
}
else
{
if ((93 - l + 25) != 65)
link_error ();
}
}
/* cprop after a loop */
void test11111 (int p, int q, int r)
{
int l = 53;
while (p < r)
{
if ((67 + l - 25) != 95)
link_error ();
p -= q;
}
}
/* There should be not link_error calls, if there is any the
optimization has failed */
/* { dg-final { scan-tree-dump-times "link_error" 0 "ccp1"} } */
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