[Bug tree-optimization/16447] out of ssa generates bloated code

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2004-10-06 12:46 -------
Subject: Bug 16447

CVSROOT:	/cvs/gcc
Module name:	gcc
Branch: 	tree-cleanup-branch
Changes by:	amacleod@gcc.gnu.org	2004-10-06 12:46:04

Modified files:
	gcc            : ChangeLog tree-cfg.c tree-flow.h 
	                 tree-optimize.c tree-outof-ssa.c 

Log message:
	2004-10-06  Andrew MacLeod  <amacleod@redhat.com>
	
	PR tree-optimization/16447
	* tree-cfg.c (bsi_commit_one_edge_insert): Rename from
	bsi_commit_edge_inserts_1, and make funtion external.  Return new block.
	(bsi_commit_edge_inserts): Use renamed bsi_commit_one_edge_insert.
	* tree-optimize.c (pass_cleanup_cfg_post_optimizing): Enable listing.
	* tree-flow.h (bsi_commit_one_edge_insert): Extern decl.
	* tree-outof-ssa.c (rewrite_trees): Don't commit edges here.
	(same_stmt_list_p): New.  Return TRUE if edge is to be forwarded.
	(identical_copies_p): New.  Return true is two copies are the same.
	(identical_stmt_lists_p): New.  Return true if stmt lists are the same.
	(analyze_edges_for_bb): New.  Determine how best to insert edge stmts
	for a basic block.
	(perform_edge_inserts): New.  Determine what to do with all stmts that
	have been inserted on edges.
	(remove_ssa_form):  Analyze and commit edges from here.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=tree-cleanup-branch&r1=2.5512.2.2&r2=2.5512.2.3
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-cfg.c.diff?cvsroot=gcc&only_with_tag=tree-cleanup-branch&r1=2.55.2.3&r2=2.55.2.4
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow.h.diff?cvsroot=gcc&only_with_tag=tree-cleanup-branch&r1=2.46.2.2&r2=2.46.2.3
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-optimize.c.diff?cvsroot=gcc&only_with_tag=tree-cleanup-branch&r1=2.47.2.3&r2=2.47.2.4
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-outof-ssa.c.diff?cvsroot=gcc&only_with_tag=tree-cleanup-branch&r1=2.22.2.1&r2=2.22.2.2



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=16447