diff options
| author | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-01-05 21:04:23 +0000 |
|---|---|---|
| committer | rguenth <rguenth@138bc75d-0d04-0410-961f-82ee72b054a4> | 2007-01-05 21:04:23 +0000 |
| commit | b1088b3e03c59a74bd02dbe455b9d0b6743fc014 (patch) | |
| tree | 319f79245605fcdcdd74c51918fbb1d8f483304d | |
| parent | 57767d22b71676485e30bc7a3289db80ed997046 (diff) | |
| download | gcc-b1088b3e03c59a74bd02dbe455b9d0b6743fc014.tar.gz | |
2007-01-05 Richard Guenther <rguenther@suse.de>
PR middle-end/27826
* tree.c (get_narrower): Do not construct COMPONENT_REFs
with mismatched types. Instead explicitly build a
conversion NOP_EXPR.
* g++.dg/opt/pr27826.C: New testcase.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@120498 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 7 | ||||
| -rw-r--r-- | gcc/testsuite/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/testsuite/g++.dg/opt/pr27826.C | 14 | ||||
| -rw-r--r-- | gcc/tree.c | 6 |
4 files changed, 28 insertions, 4 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 92925123a4a..45de0c4bca4 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,10 @@ +2007-01-05 Richard Guenther <rguenther@suse.de> + + PR middle-end/27826 + * tree.c (get_narrower): Do not construct COMPONENT_REFs + with mismatched types. Instead explicitly build a + conversion NOP_EXPR. + 2007-01-05 Ian Lance Taylor <iant@google.com> * c-common.c (decl_with_nonnull_addr_p): New function. diff --git a/gcc/testsuite/ChangeLog b/gcc/testsuite/ChangeLog index 8856b7e2ff6..817846a9fb8 100644 --- a/gcc/testsuite/ChangeLog +++ b/gcc/testsuite/ChangeLog @@ -1,3 +1,8 @@ +2007-01-05 Richard Guenther <rguenther@suse.de> + + PR middle-end/27826 + * g++.dg/opt/pr27826.C: New testcase. + 2007-01-05 Ian Lance Taylor <iant@google.com> * gcc.dg/Walways-true-1.c: New test. diff --git a/gcc/testsuite/g++.dg/opt/pr27826.C b/gcc/testsuite/g++.dg/opt/pr27826.C new file mode 100644 index 00000000000..5e40f1746f9 --- /dev/null +++ b/gcc/testsuite/g++.dg/opt/pr27826.C @@ -0,0 +1,14 @@ +/* { dg-do compile } */ +/* { dg-options "-O3" } */ + +struct Geometry +{ + int type:16; +}; +struct Geometry get() {}; +int f() +{ + struct Geometry test; + return get().type == test.type; +} + diff --git a/gcc/tree.c b/gcc/tree.c index 5abd6f345f3..71d221ee486 100644 --- a/gcc/tree.c +++ b/gcc/tree.c @@ -5989,12 +5989,10 @@ get_narrower (tree op, int *unsignedp_ptr) { if (first) uns = DECL_UNSIGNED (TREE_OPERAND (op, 1)); - win = build3 (COMPONENT_REF, type, TREE_OPERAND (op, 0), - TREE_OPERAND (op, 1), NULL_TREE); - TREE_SIDE_EFFECTS (win) = TREE_SIDE_EFFECTS (op); - TREE_THIS_VOLATILE (win) = TREE_THIS_VOLATILE (op); + win = fold_convert (type, op); } } + *unsignedp_ptr = uns; return win; } |