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jeremybenn |
/* This test needs runtime that provides stpcpy function. */
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/* { dg-do run { target *-*-linux* } } */
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/* { dg-options "-O2 -fdump-tree-strlen" } */
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#define USE_GNU
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#include "strlenopt.h"
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__attribute__((noinline, noclone)) char *
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fn1 (char *p, const char *q)
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{
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/* This strcpy can be optimized into stpcpy. */
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strcpy (p, q);
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/* And this strchr into the return value from it. */
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return strchr (p, '\0');
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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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const char *volatile q = "ABCDEFGH";
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if (fn1 (buf, q) != buf + 8 || memcmp (buf, "ABCDEFGH", 9) != 0)
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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 \\(" 0 "strlen" } } */
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/* { dg-final { scan-tree-dump-times "memcpy \\(" 0 "strlen" } } */
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/* { dg-final { scan-tree-dump-times "mempcpy \\(" 0 "strlen" } } */
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/* { dg-final { scan-tree-dump-times "strcpy \\(" 0 "strlen" } } */
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/* { dg-final { scan-tree-dump-times "strcat \\(" 0 "strlen" } } */
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/* { dg-final { scan-tree-dump-times "strchr \\(" 0 "strlen" } } */
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/* { dg-final { scan-tree-dump-times "stpcpy \\(" 1 "strlen" } } */
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/* { dg-final { cleanup-tree-dump "strlen" } } */
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