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| author | Richard Guenther <rguenther@suse.de> | 2009-08-12 15:10:47 +0000 |
|---|---|---|
| committer | Richard Biener <rguenth@gcc.gnu.org> | 2009-08-12 15:10:47 +0000 |
| commit | daad02781a10022ac810312c46fda483809c3634 (patch) | |
| tree | 637efc702dde071c504b6d68951b06bfb3f2b5c1 /gcc/tree-ssa.c | |
| parent | 30de16328a546dd06011235d86ef573dc2ffba6e (diff) | |
| download | gcc-daad02781a10022ac810312c46fda483809c3634.zip gcc-daad02781a10022ac810312c46fda483809c3634.tar.gz gcc-daad02781a10022ac810312c46fda483809c3634.tar.bz2 | |
alias.c (get_alias_set): Honor TYPE_STRUCTURAL_EQUALITY_P.
2009-08-12 Richard Guenther <rguenther@suse.de>
* alias.c (get_alias_set): Honor TYPE_STRUCTURAL_EQUALITY_P.
* gimplify.c (gimplify_modify_expr): Do not use
lang_hooks.types_compatible_p.
* tree-ssa.c (useless_type_conversion_p): For aggregates
just return false if the canonical types differ.
From-SVN: r150695
Diffstat (limited to 'gcc/tree-ssa.c')
| -rw-r--r-- | gcc/tree-ssa.c | 13 |
1 files changed, 4 insertions, 9 deletions
diff --git a/gcc/tree-ssa.c b/gcc/tree-ssa.c index 97e15ae..a402703 100644 --- a/gcc/tree-ssa.c +++ b/gcc/tree-ssa.c @@ -1102,17 +1102,12 @@ useless_type_conversion_p (tree outer_type, tree inner_type) return true; } - /* For aggregates we may need to fall back to structural equality - checks. */ + /* For aggregates we rely on TYPE_CANONICAL exclusively and require + explicit conversions for types involving to be structurally + compared types. */ else if (AGGREGATE_TYPE_P (inner_type) && TREE_CODE (inner_type) == TREE_CODE (outer_type)) - { - if (TYPE_STRUCTURAL_EQUALITY_P (outer_type) - || TYPE_STRUCTURAL_EQUALITY_P (inner_type)) - return lang_hooks.types_compatible_p (inner_type, outer_type); - - return false; - } + return false; return false; } |