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| author | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-05-05 19:31:35 +0000 |
|---|---|---|
| committer | jakub <jakub@138bc75d-0d04-0410-961f-82ee72b054a4> | 2003-05-05 19:31:35 +0000 |
| commit | 647661c6bb7287179a8b6cc17979102c30e3fbb6 (patch) | |
| tree | 28d5a88a130f796c626606f2d26616bec3b414a9 /gcc/testsuite/gcc.c-torture/execute/string-opt-18.c | |
| parent | 4b4dcf9c25241741bf464e80a08f2b37acca7b19 (diff) | |
| download | gcc-647661c6bb7287179a8b6cc17979102c30e3fbb6.tar.gz | |
* builtins.c (expand_builtin_mempcpy): New function.
(expand_builtin_stpcpy): Optimize stpcpy whose return value is
ignored into strcpy no matter what arguments it has.
(expand_builtin) <case BUILT_IN_MEMPCPY>: Call
expand_builtin_mempcpy.
* gcc.c-torture/execute/string-opt-18.c (main): Add 3 new tests.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@66498 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.c-torture/execute/string-opt-18.c')
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/string-opt-18.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.c-torture/execute/string-opt-18.c b/gcc/testsuite/gcc.c-torture/execute/string-opt-18.c index 0ba2be6e628..dfa5c169e2d 100644 --- a/gcc/testsuite/gcc.c-torture/execute/string-opt-18.c +++ b/gcc/testsuite/gcc.c-torture/execute/string-opt-18.c @@ -15,6 +15,9 @@ extern int memcmp (const void *, const void *, size_t); const char s1[] = "123"; char p[32] = ""; +char *s2 = "defg"; +char *s3 = "FGH"; +size_t l1 = 1; int main() { @@ -60,6 +63,17 @@ int main() if (__builtin_mempcpy (p, "ABCDE", 6) != p + 6 || memcmp (p, "ABCDE", 6)) abort (); + /* If the result of stpcpy/mempcpy is ignored, gcc should use + strcpy/memcpy. */ + stpcpy (p + 3, s2); + if (memcmp (p, "ABCdefg", 8)) + abort (); + mempcpy (p + 5, s3, 1); + if (memcmp (p, "ABCdeFg", 8)) + abort (); + mempcpy (p + 6, s3 + 1, l1); + if (memcmp (p, "ABCdeFG", 8)) + abort (); return 0; } |