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tree-ssa.c (useless_type_conversion_p_1): Only for types that require structural equality defer to the langhook. 

2009-08-07  Richard Guenther  <rguenther@suse.de>

	* tree-ssa.c (useless_type_conversion_p_1): Only for types
	that require structural equality defer to the langhook.

From-SVN: r150559
This commit is contained in:
Richard Guenther 2009-08-07 08:54:53 +00:00 committed by Richard Biener
parent 685b0d134d
commit 60419cc891
2 changed files with 9 additions and 4 deletions
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gcc/ChangeLog
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@ -1,3 +1,8 @@
2009-08-07 Richard Guenther <rguenther@suse.de>
* tree-ssa.c (useless_type_conversion_p_1): Only for types
that require structural equality defer to the langhook.
2009-08-07 Martin Jambor <mjambor@suse.cz> 2009-08-07 Martin Jambor <mjambor@suse.cz>
* ipa-prop.h (enum jump_func_type): New value IPA_JF_ANCESTOR, changed * ipa-prop.h (enum jump_func_type): New value IPA_JF_ANCESTOR, changed

8
gcc/tree-ssa.c
View File

@ -1073,11 +1073,11 @@ useless_type_conversion_p_1 (tree outer_type, tree inner_type)
else if (AGGREGATE_TYPE_P (inner_type) else if (AGGREGATE_TYPE_P (inner_type)
&& TREE_CODE (inner_type) == TREE_CODE (outer_type)) && TREE_CODE (inner_type) == TREE_CODE (outer_type))
{ {
/* ??? This seems to be necessary even for aggregates that don't if (TYPE_STRUCTURAL_EQUALITY_P (outer_type)
have TYPE_STRUCTURAL_EQUALITY_P set. */ || TYPE_STRUCTURAL_EQUALITY_P (inner_type))
return lang_hooks.types_compatible_p (inner_type, outer_type);
/* ??? This should eventually just return false. */ return false;
return lang_hooks.types_compatible_p (inner_type, outer_type);
} }
return false; return false;