* fold-const.c (fold_widened_comparison): Don't optimize casts of
function pointers on targets that require function pointer
canonicalization.
(fold_sign_changed_comparison): Likewise.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@96733
138bc75d-0d04-0410-961f-
82ee72b054a4
+2005-03-19 John David Anglin <dave.anglin@nrc-cnrc.gc.ca>
+
+ PR middle-end/20493
+ * fold-const.c (fold_widened_comparison): Don't optimize casts of
+ function pointers on targets that require function pointer
+ canonicalization.
+ (fold_sign_changed_comparison): Likewise.
+
2005-03-19 Bernd Schmidt <bernd.schmidt@analog.com>
* combine.c (try_combine): When changing the mode of a hard reg, make
2005-03-19 Bernd Schmidt <bernd.schmidt@analog.com>
* combine.c (try_combine): When changing the mode of a hard reg, make
return NULL_TREE;
shorter_type = TREE_TYPE (arg0_unw);
return NULL_TREE;
shorter_type = TREE_TYPE (arg0_unw);
+#ifdef HAVE_canonicalize_funcptr_for_compare
+ /* Disable this optimization if we're casting a function pointer
+ type on targets that require function pointer canonicalization. */
+ if (HAVE_canonicalize_funcptr_for_compare
+ && TREE_CODE (shorter_type) == POINTER_TYPE
+ && TREE_CODE (TREE_TYPE (shorter_type)) == FUNCTION_TYPE)
+ return NULL_TREE;
+#endif
+
if (TYPE_PRECISION (TREE_TYPE (arg0)) <= TYPE_PRECISION (shorter_type))
return NULL_TREE;
if (TYPE_PRECISION (TREE_TYPE (arg0)) <= TYPE_PRECISION (shorter_type))
return NULL_TREE;
arg0_inner = TREE_OPERAND (arg0, 0);
inner_type = TREE_TYPE (arg0_inner);
arg0_inner = TREE_OPERAND (arg0, 0);
inner_type = TREE_TYPE (arg0_inner);
+#ifdef HAVE_canonicalize_funcptr_for_compare
+ /* Disable this optimization if we're casting a function pointer
+ type on targets that require function pointer canonicalization. */
+ if (HAVE_canonicalize_funcptr_for_compare
+ && TREE_CODE (inner_type) == POINTER_TYPE
+ && TREE_CODE (TREE_TYPE (inner_type)) == FUNCTION_TYPE)
+ return NULL_TREE;
+#endif
+
if (TYPE_PRECISION (inner_type) != TYPE_PRECISION (outer_type))
return NULL_TREE;
if (TYPE_PRECISION (inner_type) != TYPE_PRECISION (outer_type))
return NULL_TREE;