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| author | Dirk Mueller <dmueller@suse.de> | 2006-05-09 14:16:50 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2006-05-09 14:16:50 +0000 |
| commit | f9c3744b7f05d9e60ff8776111ad9049b55d863a (patch) | |
| tree | e0ba9e9c343cc1cd57ef4f7f67500ebcf0e17982 | |
| parent | 2c790a28841f2a404f1f6e96d07041138583788a (diff) | |
| download | gcc-f9c3744b7f05d9e60ff8776111ad9049b55d863a.zip gcc-f9c3744b7f05d9e60ff8776111ad9049b55d863a.tar.gz gcc-f9c3744b7f05d9e60ff8776111ad9049b55d863a.tar.bz2 | |
re PR middle-end/27498 (fold does not fold reads from constant static strings)
2006-05-09 Dirk Mueller <dmueller@suse.de>
Richard Guenther <rguenther@suse.de>
PR middle-end/27498
* fold-const.c (fold_read_from_constant_string): Relax check
for matching types to matching modes.
* gcc.dg/tree-ssa/pr27498.c: New testcase.
Co-Authored-By: Richard Guenther <rguenther@suse.de>
From-SVN: r113651
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/fold-const.c | 2 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 6 | ||||
| -rw-r--r-- | gcc/testsuite/gcc.dg/tree-ssa/pr27498.c | 17 |
4 files changed, 31 insertions, 1 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index c1896d9..b7840c4a 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2006-05-09 Dirk Mueller <dmueller@suse.de> + Richard Guenther <rguenther@suse.de> + + PR middle-end/27498 + * fold-const.c (fold_read_from_constant_string): Relax check + for matching types to matching modes. + 2006-05-09 Zdenek Dvorak <dvorakz@suse.cz> PR rtl-optimization/27335 diff --git a/gcc/fold-const.c b/gcc/fold-const.c index 5671682..26e53c0 100644 --- a/gcc/fold-const.c +++ b/gcc/fold-const.c @@ -12220,7 +12220,7 @@ fold_read_from_constant_string (tree exp) } if (string - && TREE_TYPE (exp) == TREE_TYPE (TREE_TYPE (string)) + && TYPE_MODE (TREE_TYPE (exp)) == TYPE_MODE (TREE_TYPE (TREE_TYPE (string))) && TREE_CODE (string) == STRING_CST && TREE_CODE (index) == INTEGER_CST && compare_tree_int (index, TREE_STRING_LENGTH (string)) < 0 diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index a3f49f7..9eff9f4 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,9 @@ +2006-05-09 Dirk Mueller <dmueller@suse.de> + Richard Guenther <rguenther@suse.de> + + PR middle-end/27498 + * gcc.dg/tree-ssa/pr27498.c: New testcase. + 2006-05-09 Zdenek Dvorak <dvorakz@suse.cz> PR rtl-optimization/27335 diff --git a/gcc/testsuite/gcc.dg/tree-ssa/pr27498.c b/gcc/testsuite/gcc.dg/tree-ssa/pr27498.c new file mode 100644 index 0000000..75d3d4b --- /dev/null +++ b/gcc/testsuite/gcc.dg/tree-ssa/pr27498.c @@ -0,0 +1,17 @@ +/* { dg-do compile } */ +/* { dg-options "-O -fdump-tree-optimized" } */ + +void zconfdump(void) +{ + char *p, *p2; + for (p2 = p; p2; ) + { + char __a0, __a1, __a2; + __a0 = ((__const char *) ("\"\\"))[0]; + if (__a0) + return; + } +} + +/* { dg-final { scan-tree-dump-not "goto" "optimized" } } */ +/* { dg-final { cleanup-tree-dump "optimized" } } */ |