diff options
| author | krebbel <krebbel@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-02-25 15:07:17 +0000 |
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| committer | krebbel <krebbel@138bc75d-0d04-0410-961f-82ee72b054a4> | 2008-02-25 15:07:17 +0000 |
| commit | 5fe61d21f7d29781b7f64e44687913e4386668b5 (patch) | |
| tree | fc21b35d3970def7cfb0d7c5ee657f66f97bd3bf /gcc/testsuite/gcc.dg/pr35258.c | |
| parent | cab0c61281d1a8af3eb8d967b7210fcf9b43dc10 (diff) | |
| download | gcc-5fe61d21f7d29781b7f64e44687913e4386668b5.tar.gz | |
2008-02-25 Andreas Krebbel <krebbel1@de.ibm.com>
PR target/35258
* cse.c (cse_insn): Avoid creation of overlapping MEMs.
* alias.c (nonoverlapping_memrefs_p): Export for use in other modules.
* alias.h (nonoverlapping_memrefs_p): Likewise.
2008-02-25 Andreas Krebbel <krebbel1@de.ibm.com>
PR target/35258
* gcc.dg/pr35258.c: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@132628 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'gcc/testsuite/gcc.dg/pr35258.c')
| -rw-r--r-- | gcc/testsuite/gcc.dg/pr35258.c | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/gcc/testsuite/gcc.dg/pr35258.c b/gcc/testsuite/gcc.dg/pr35258.c new file mode 100644 index 00000000000..d1c45a79dc7 --- /dev/null +++ b/gcc/testsuite/gcc.dg/pr35258.c @@ -0,0 +1,28 @@ +/* { dg-do run } */ +/* { dg-options "-O1" } */ + +extern void *memcpy (void *, const void *, __SIZE_TYPE__); +extern int memcmp (const void *, const void *, __SIZE_TYPE__); +extern void abort(void); + +char str[9] = "1234"; + +void +bar (void) +{ + unsigned int temp; + char *p = &str[2]; + + memcpy (&temp, &str[1], 4); + memcpy (p, &temp, 4); + str[1] = '.'; +} + +int main() +{ + bar(); + if (memcmp (str, "1.234", 5) != 0) + abort (); + + return 0; +} |