43 lines
858 B
C
43 lines
858 B
C
/* { dg-do compile } */
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/* { dg-options "-O2 -fdump-tree-forwprop1" } */
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typedef __SIZE_TYPE__ size_t;
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typedef __PTRDIFF_TYPE__ ptrdiff_t;
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ptrdiff_t foo1 (char *a, size_t n)
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{
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char *b1 = a + 8 * n;
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char *b2 = a + 8 * (n - 1);
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return b1 - b2;
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}
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int use_ptr (char *a, char *b);
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ptrdiff_t foo2 (char *a, size_t n)
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{
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char *b1 = a + 8 * (n - 1);
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char *b2 = a + 8 * n;
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use_ptr (b1, b2);
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return b1 - b2;
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}
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int use_int (int i);
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unsigned goo (unsigned m_param, unsigned n_param)
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{
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unsigned b1 = m_param * (n_param + 2);
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unsigned b2 = m_param * (n_param + 1);
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int r = (int)(b1) - (int)(b2);
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use_int (r);
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return r;
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}
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/* { dg-final { scan-tree-dump-times "return 8;" 1 "forwprop1" } } */
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/* { dg-final { scan-tree-dump-times "return -8;" 1 "forwprop1" } } */
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/* { dg-final { scan-tree-dump-times "return m_param" 1 "forwprop1" } } */
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