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| author | uweigand <uweigand@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-09-26 19:13:38 +0000 |
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| committer | uweigand <uweigand@138bc75d-0d04-0410-961f-82ee72b054a4> | 2004-09-26 19:13:38 +0000 |
| commit | a1a25d19ee3a474f26828f018129d687f298158c (patch) | |
| tree | 21b084b994ebe3cbc6197ae46e37bbcce7b16519 | |
| parent | 1ee857038e917c418c4e4bf101d6f7abe6eb2263 (diff) | |
| download | ppe42-gcc-a1a25d19ee3a474f26828f018129d687f298158c.tar.gz ppe42-gcc-a1a25d19ee3a474f26828f018129d687f298158c.zip | |
* builtins.c (get_memory_rtx): Set mem attributes for non-ADDR_EXPR
expressions. Always clear MEM_SIZE and alias set.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@88141 138bc75d-0d04-0410-961f-82ee72b054a4
| -rw-r--r-- | gcc/ChangeLog | 5 | ||||
| -rw-r--r-- | gcc/builtins.c | 17 |
2 files changed, 16 insertions, 6 deletions
diff --git a/gcc/ChangeLog b/gcc/ChangeLog index 75ba5a7163f..718e13116ff 100644 --- a/gcc/ChangeLog +++ b/gcc/ChangeLog @@ -1,3 +1,8 @@ +2004-09-26 Ulrich Weigand <uweigand@de.ibm.com> + + * builtins.c (get_memory_rtx): Set mem attributes for non-ADDR_EXPR + expressions. Always clear MEM_SIZE and alias set. + 2004-09-26 Roger Sayle <roger@eyesopen.com> Giovanni Bajo <giovannibajo@gcc.gnu.org> diff --git a/gcc/builtins.c b/gcc/builtins.c index f3ee9e9b348..9127f45b6aa 100644 --- a/gcc/builtins.c +++ b/gcc/builtins.c @@ -990,15 +990,20 @@ get_memory_rtx (tree exp) exp = TREE_OPERAND (exp, 0); if (TREE_CODE (exp) == ADDR_EXPR) - { - exp = TREE_OPERAND (exp, 0); - set_mem_attributes (mem, exp, 0); - } + exp = TREE_OPERAND (exp, 0); else if (POINTER_TYPE_P (TREE_TYPE (exp))) + exp = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (exp)), exp); + else + exp = NULL; + + /* Honor attributes derived from exp, except for the alias set + (as builtin stringops may alias with anything) and the size + (as stringops may access multiple array elements). */ + if (exp) { - exp = build1 (INDIRECT_REF, TREE_TYPE (TREE_TYPE (exp)), exp); - /* memcpy, memset and other builtin stringops can alias with anything. */ + set_mem_attributes (mem, exp, 0); set_mem_alias_set (mem, 0); + set_mem_size (mem, NULL_RTX); } return mem; |
