gcc/gcc ChangeLog.tree-ssa tree-dfa.c tree-flo ...

[dnovillo at gcc dot gnu dot org]

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	tree-ssa-20020619-branch
Changes by:	dnovillo@gcc.gnu.org	2003-02-03 01:26:54

Modified files:
	gcc            : ChangeLog.tree-ssa tree-dfa.c 
	                 tree-flow-inline.h tree-flow.h 
	                 tree-pretty-print.c tree-simple.c 
	                 tree-ssa-ccp.c tree-ssa-dce.c tree-ssa.c tree.c 
	                 tree.h 
	gcc/testsuite  : ChangeLog.tree-ssa 
	gcc/testsuite/lib: c-torture.exp 

Log message:
	* tree-dfa.c (get_expr_operands): Add a VUSE for the dereference of
	every pointer passed in a function call.
	Move code to add an operand for the base pointer of an
	INDIRECT_REF ...
	(add_stmt_operand): ... here.
	Add a VUSE for the base pointer of every INDIRECT_REF variable.
	(find_may_aliases_for): Fix starting index for the loop that scans
	INDIRECT_REFs for aliasing.
	Factor code that marks two variables aliased into
	register_new_alias.
	(register_new_alias): New function.
	(may_alias_p): Handle aliasing of structure fields.
	(add_may_alias): Fix documentation.
	(find_vars_r): Factor code that adds a new referenced variable into
	add_referenced_var.
	(add_referenced_var): New function.
	(add_indirect_ref_var): New function.
	(get_virtual_var): Handle variables wrapped in SSA_NAMEs.
	(set_may_alias_global_mem): Move from ...
	* tree-flow-inline.h: ... here.
	
	* tree-ssa-dce.c (need_to_preserve_store): CALL_EXPRs are
	implicitly live.  VA_ARG_EXPRs are not.
	(stmt_useful_p):
	
	* tree.h (SSA_NAME_VAR): Rename from SSA_NAME_DECL.  Update all
	users.
	(struct tree_ssa_name): Rename field 'decl' to 'var'.  Update all
	users.
	(SSA_DECL_P): Accept only VAR_DECLs and PARM_DECLs possibly wrapped
	inside an SSA_NAME node.
	(SSA_VAR_P): Also accept SSA_NAME nodes.
	
	testsuite/ChangeLog.tree-ssa
	
	* lib/c-torture.exp (TORTURE_OPTIONS): Add -ftree-dce.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.tree-ssa.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.208&r2=1.1.2.209
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-dfa.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.4.68&r2=1.1.4.69
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow-inline.h.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.21&r2=1.1.2.22
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow.h.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.4.47&r2=1.1.4.48
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-pretty-print.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.14&r2=1.1.2.15
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-simple.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.4.26&r2=1.1.4.27
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-ccp.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.42&r2=1.1.2.43
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-dce.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.22&r2=1.1.2.23
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.4.44&r2=1.1.4.45
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree.c.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.263.2.21&r2=1.263.2.22
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree.h.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.342.2.42&r2=1.342.2.43
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.tree-ssa.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.1.2.6&r2=1.1.2.7
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/lib/c-torture.exp.diff?cvsroot=gcc&only_with_tag=tree-ssa-20020619-branch&r1=1.17&r2=1.17.2.1