gcc/gcc ChangeLog.iab passes.c tree-dfa.c tree ...

[dberlin@gcc.gnu.org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	improved-aliasing-branch
Changes by:	dberlin@gcc.gnu.org	2005-10-19 14:00:53

Modified files:
	gcc            : ChangeLog.iab passes.c tree-dfa.c tree-flow.h 
	                 tree-ssa-alias.c tree-ssa-operands.c 
	                 tree-ssa-structalias.c 
	gcc/cp         : ptree.c 
Added files:
	gcc/testsuite/gcc.dg/tree-ssa: pr24287.c 

Log message:
	2005-10-18  Daniel Berlin  <dberlin@dberlin.org>
	
	Fix PR tree-optimization/24287
	* tree-dfa.c (dump_variable): Print reasons for call clobbering.
	* tree-flow.h (struct ptr_info_def): Add escape mask to pointer.
	(ESCAPE_TRANSITIVE): Removed.
	(ESCAPE_TO_PURE_CONST): New.
	(ESCAPE_IS_PARM): New.
	(ESCAPE_UNKNOWN): New.
	* tree-ssa-alias.c (set_initial_properties): Incoming pointers are
	value escaping.
	Pointers that point to anything are not.
	Use pointer escape mask.
	(is_escape_site): Use ESCAPE_TO_PURE_CONST.
	* tree-ssa-operands.c (add_call_clobber_ops): Clean up a bit.
	Things that *only* escape to pure/const functions are only read by
	pure/const functions, and are not clobbered by the non-pure/const
	functions.
	(add_call_read_ops): Cleanup.
	* tree-ssa-structalias.c (update_alias_info): Use pi->escape_mask,
	not v_ann.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.iab.diff?cvsroot=gcc&only_with_tag=improved-aliasing-branch&r1=1.1.2.13&r2=1.1.2.14
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/passes.c.diff?cvsroot=gcc&only_with_tag=improved-aliasing-branch&r1=2.109.2.7&r2=2.109.2.8
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-dfa.c.diff?cvsroot=gcc&only_with_tag=improved-aliasing-branch&r1=2.63.4.6&r2=2.63.4.7
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow.h.diff?cvsroot=gcc&only_with_tag=improved-aliasing-branch&r1=2.132.2.8&r2=2.132.2.9
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-alias.c.diff?cvsroot=gcc&only_with_tag=improved-aliasing-branch&r1=2.109.4.11&r2=2.109.4.12
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-operands.c.diff?cvsroot=gcc&only_with_tag=improved-aliasing-branch&r1=2.100.4.7&r2=2.100.4.8
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-structalias.c.diff?cvsroot=gcc&only_with_tag=improved-aliasing-branch&r1=2.27.2.10&r2=2.27.2.11
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/cp/ptree.c.diff?cvsroot=gcc&only_with_tag=improved-aliasing-branch&r1=1.51&r2=1.51.2.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/tree-ssa/pr24287.c.diff?cvsroot=gcc&only_with_tag=improved-aliasing-branch&r1=NONE&r2=1.1.2.1