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| author | Richard Guenther <rguenther@suse.de> | 2008-11-03 12:32:52 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2008-11-03 12:32:52 +0000 |
| commit | da4b6efcd6ed9d2c6f3b100dc8552753276df586 (patch) | |
| tree | 80c65546172fbb0171b4c185c1f162c7571929c7 /gcc | |
| parent | 2a81fe20dd558aef586fb7aa5c53779e129bc961 (diff) | |
| download | gcc-da4b6efcd6ed9d2c6f3b100dc8552753276df586.zip gcc-da4b6efcd6ed9d2c6f3b100dc8552753276df586.tar.gz gcc-da4b6efcd6ed9d2c6f3b100dc8552753276df586.tar.bz2 | |
re PR tree-optimization/37573 (gcc-4.4 regression: incorrect code generation with -O1 -ftree-vectorize)
2008-11-03 Richard Guenther <rguenther@suse.de>
PR middle-end/37573
* tree-data-ref.c (split_constant_offset_1): Fix tuplification.
* gcc.c-torture/execute/pr37573.c: New testcase.
Co-Authored-By: Jakub Jelinek <jakub@redhat.com>
From-SVN: r141547
Diffstat (limited to 'gcc')
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.c-torture/execute/pr37573.c | 65 | ||||
| -rw-r--r-- | gcc/tree-data-ref.c | 1 |
4 files changed, 77 insertions, 0 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 6489e91..9a3d1bd 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2008-11-03 Richard Guenther <rguenther@suse.de> + + PR middle-end/37573 + * tree-data-ref.c (split_constant_offset_1): Fix tuplification. + 2008-11-03 Jakub Jelinek <jakub@redhat.com> PR middle-end/37858 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 1d7e58b..104f203 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2008-11-03 Richard Guenther <rguenther@suse.de> + Jakub Jelinek <jakub@redhat.com> + + PR middle-end/37573 + * gcc.c-torture/execute/pr37573.c: New testcase. + 2008-11-03 Jakub Jelinek <jakub@redhat.com> PR middle-end/37858 diff --git a/gcc/testsuite/gcc.c-torture/execute/pr37573.c b/gcc/testsuite/gcc.c-torture/execute/pr37573.c new file mode 100644 index 0000000..5891910 --- /dev/null +++ b/gcc/testsuite/gcc.c-torture/execute/pr37573.c @@ -0,0 +1,65 @@ +/* PR tree-optimization/37573 */ + +struct S +{ + unsigned int *a; + unsigned int b; + unsigned int c[624]; +}; + +static unsigned char __attribute__((noinline)) +foo (struct S *s) +{ + unsigned int r; + if (!--s->b) + { + unsigned int *c = s->c; + unsigned int i; + s->a = c; + for (i = 0; i < 227; i++) + c[i] = ((((c[i] ^ c[i + 1]) & 0x7ffffffe) ^ c[i]) >> 1) + ^ ((0 - (c[i + 1] & 1)) & 0x9908b0df) ^ c[i + 397]; + } + r = *(s->a++); + r ^= (r >> 11); + r ^= ((r & 0xff3a58ad) << 7); + r ^= ((r & 0xffffdf8c) << 15); + r ^= (r >> 18); + return (unsigned char) (r >> 1); +} + +static void __attribute__((noinline)) +bar (unsigned char *p, unsigned int q, unsigned int r) +{ + struct S s; + unsigned int i; + unsigned int *c = s.c; + *c = r; + for (i = 1; i < 624; i++) + c[i] = i + 0x6c078965 * ((c[i - 1] >> 30) ^ c[i - 1]); + s.b = 1; + while (q--) + *p++ ^= foo (&s); +}; + +static unsigned char p[23] = { + 0xc0, 0x49, 0x17, 0x32, 0x62, 0x1e, 0x2e, 0xd5, 0x4c, 0x19, 0x28, 0x49, + 0x91, 0xe4, 0x72, 0x83, 0x91, 0x3d, 0x93, 0x83, 0xb3, 0x61, 0x38 +}; + +static unsigned char q[23] = { + 0x3e, 0x41, 0x55, 0x54, 0x4f, 0x49, 0x54, 0x20, 0x55, 0x4e, 0x49, 0x43, + 0x4f, 0x44, 0x45, 0x20, 0x53, 0x43, 0x52, 0x49, 0x50, 0x54, 0x3c +}; + +int +main (void) +{ + unsigned int s; + s = 23; + bar (p, s, s + 0xa25e); + if (__builtin_memcmp (p, q, s) != 0) + __builtin_abort (); + return 0; +} + diff --git a/gcc/tree-data-ref.c b/gcc/tree-data-ref.c index 9412414..4f1a9fd 100644 --- a/gcc/tree-data-ref.c +++ b/gcc/tree-data-ref.c @@ -551,6 +551,7 @@ split_constant_offset_1 (tree type, tree op0, enum tree_code code, tree op1, enum machine_mode pmode; int punsignedp, pvolatilep; + op0 = TREE_OPERAND (op0, 0); if (!handled_component_p (op0)) return false; |