65 lines
1.6 KiB
C
65 lines
1.6 KiB
C
/* { dg-do run } */
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/* { dg-options "-O2 -fdump-tree-strlen -fdump-tree-optimized" } */
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#include "strlenopt.h"
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__attribute__((noinline, noclone)) size_t
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fn1 (char *p, char *q)
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{
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size_t s = strlen (q);
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strcpy (p, q);
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return s - strlen (p);
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}
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__attribute__((noinline, noclone)) size_t
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fn2 (char *p, char *q)
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{
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size_t s = strlen (q);
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memcpy (p, q, s + 1);
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return s - strlen (p);
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}
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__attribute__((noinline, noclone)) size_t
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fn3 (char *p)
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{
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memcpy (p, "abcd", 5);
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return strlen (p);
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}
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__attribute__((noinline, noclone)) size_t
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fn4 (char *p)
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{
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memcpy (p, "efg\0hij", 6);
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return strlen (p);
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}
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int
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main ()
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{
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char buf[64];
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char *volatile p = buf;
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char *volatile q = "ABCDEF";
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buf[7] = 'G';
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if (fn1 (p, q) != 0 || memcmp (buf, "ABCDEF\0G", 8))
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abort ();
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q = "HIJ";
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if (fn2 (p + 1, q) != 0 || memcmp (buf, "AHIJ\0F\0G", 8))
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abort ();
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buf[6] = 'K';
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if (fn3 (p + 1) != 4 || memcmp (buf, "Aabcd\0KG", 8))
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abort ();
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if (fn4 (p) != 3 || memcmp (buf, "efg\0hiKG", 8))
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abort ();
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return 0;
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}
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/* { dg-final { scan-tree-dump-times "strlen \\(" 2 "strlen1" } } */
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/* { dg-final { scan-tree-dump-times "memcpy \\(" 4 "strlen1" } } */
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/* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen1" } } */
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/* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen1" } } */
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/* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen1" } } */
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/* { dg-final { scan-tree-dump-times "stpcpy \\(" 0 "strlen1" } } */
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/* { dg-final { scan-tree-dump-times "return 0" 3 "optimized" } } */
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/* { dg-final { scan-tree-dump-times "return 4" 1 "optimized" } } */
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/* { dg-final { scan-tree-dump-times "return 3" 1 "optimized" } } */
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