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Makefile.in (print-rtl.o): Depend on TREE_H.

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* Makefile.in (print-rtl.o): Depend on TREE_H.
	* alias.c (get_alias_set): Make two passes over objects to first
	see if inner object is access via restricted pointer.
	Defer allocating alias set for restricted pointer until here.
	Call find_placeholder with second arg nonzero.
	Minor cleanups.
	* c-common.c (c_apply_type_quals_to_decl): Defer getting alias
	set for restricted pointer types.
	* emit-rtl.c (set_mem_attributes): Set more attributes.
	(set_mem_align, change_address, adjust_address_1): New functions.
	(change_address_1): Now static.
	(adjust_address, adjust_address_nv): Deleted.
	(replace_equiv_address): Call change_address_1.
	* expr.c (get_inner_reference): Handle PLACEHOLDER_EXPR.
	(find_placeholder): Get starting point from PLIST arg.
	(expand_expr, case PLACEHOLDER_EXPR): Initialize find_placeholder arg.
	* expr.h (set_mem_align, change_address, adjust_address_1): New decls.
	(adjust_address, adjust_address_nv): New macros.
	* print-rtl.c (tree.h): New include.
	(print_rtx, case MEM): Print all memory attributes.

From-SVN: r46314
This commit is contained in:
Richard Kenner 2001-10-17 09:40:21 +00:00 • committed by Richard Kenner
parent 738cc47245
commit 3c5ad1ffc6
2 changed files with 6 additions and 22 deletions
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2
gcc/ChangeLog
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@ -6,6 +6,8 @@ Wed Oct 17 05:26:39 2001 Richard Kenner <kenner@vlsi1.ultra.nyu.edu>
Defer allocating alias set for restricted pointer until here.
Call find_placeholder with second arg nonzero.
Minor cleanups.
* c-common.c (c_apply_type_quals_to_decl): Defer getting alias
set for restricted pointer types.
* emit-rtl.c (set_mem_attributes): Set more attributes.
(set_mem_align, change_address, adjust_address_1): New functions.
(change_address_1): Now static.

26
gcc/c-common.c
View file

@ -2131,28 +2131,10 @@ c_apply_type_quals_to_decl (type_quals, decl)
|| !C_TYPE_OBJECT_OR_INCOMPLETE_P (TREE_TYPE (TREE_TYPE (decl))))
error ("invalid use of `restrict'");
else if (flag_strict_aliasing)
{
/* No two restricted pointers can point at the same thing.
However, a restricted pointer can point at the same thing
as an unrestricted pointer, if that unrestricted pointer
is based on the restricted pointer. So, we make the
alias set for the restricted pointer a subset of the
alias set for the type pointed to by the type of the
decl. */
HOST_WIDE_INT pointed_to_alias_set
= get_alias_set (TREE_TYPE (TREE_TYPE (decl)));
if (pointed_to_alias_set == 0)
/* It's not legal to make a subset of alias set zero. */
;
else
{
DECL_POINTER_ALIAS_SET (decl) = new_alias_set ();
record_alias_subset (pointed_to_alias_set,
DECL_POINTER_ALIAS_SET (decl));
}
}
/* Indicate we need to make a unique alias set for this pointer.
We can't do it here because it might be pointing to an
incomplete type. */
DECL_POINTER_ALIAS_SET (decl) = -2;
}
}