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[Bug tree-optimization/20725] [tcb] FRE does not remove a fully redundant load.

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-04-04 19:02 -------
Subject: Bug 20725

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	2005-04-04 19:02:18

Modified files:
	gcc            : ChangeLog tree-ssa-pre.c 
	gcc/testsuite/gcc.dg/tree-ssa: ssa-pre-1.c ssa-pre-2.c 
	                               ssa-pre-3.c ssa-pre-4.c 
	                               ssa-pre-5.c ssa-pre-6.c 
Added files:
	gcc/testsuite/gcc.dg/tree-ssa: ssa-pre-7.c ssa-pre-8.c 

Log message:
	2005-04-02  Daniel Berlin  <>
	Diego Novillo <>
	Fix PR tree-optimization/20703
	Fix PR tree-optimization/20725
	* tree-ssa-pre.c (phi_translate): Handle tcc_comparison.
	(create_expression_by_pieces): Ditto.
	(valid_in_set): Ditto. Also handle tcc_declaration.
	(find_or_generate_expression): Handle comparison class.
	(insert_into_preds_of_block): Ditto.
	(insert_aux): Ditto.
	(create_value_expr_from): Handle comparison class, recursively
	handle reference nodes.
	(compute_avail): Handle comparison classes, rewrite a little cleaner.
	(execute_pre): Fix spacing.
	(do_fre): Renamed to execute_fre.



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