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