[Bug tree-optimization/22236] [4.1 Regression] wrong code for casts and scev

["cvs-commit at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-08-13 17:28 -------
Subject: Bug 22236

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	spop@gcc.gnu.org	2005-08-13 17:28:43

Modified files:
	gcc            : ChangeLog tree-cfg.c tree-chrec.c 
	                 tree-data-ref.c tree-data-ref.h 
	                 tree-flow-inline.h tree-flow.h 
	                 tree-scalar-evolution.c tree-ssa-loop-ivcanon.c 
	                 tree-ssa-loop-ivopts.c tree-ssa-loop-niter.c 
	                 tree-vect-analyze.c tree-vrp.c 
Added files:
	gcc/testsuite/gcc.dg/tree-ssa: pr22236.c 

Log message:
	PR tree-optimization/22236
	* tree-cfg.c (print_pred_bbs, print_succ_bbs): Correctly print
	successors and predecessors.
	* tree-chrec.c (chrec_convert): Before converting, check that
	sequences don't wrap.
	* tree-data-ref.c (compute_estimated_nb_iterations): Moved ...
	(analyze_array): Extern.
	(find_data_references_in_loop): Remove call to
	compute_estimated_nb_iterations.
	* tree-data-ref.h (analyze_array): Declared.
	* tree-flow-inline.h (single_ssa_tree_operand, single_ssa_use_operand,
	single_ssa_def_operand, zero_ssa_operands): Fix documentation.
	* tree-flow.h (scev_probably_wraps_p): Declare with an extra parameter.
	* tree-scalar-evolution.c (instantiate_parameters_1): Factor entry
	condition.
	* tree-ssa-loop-ivcanon.c: Fix documentation.
	* tree-ssa-loop-ivopts.c (idx_find_step): Add a fixme note.
	* tree-ssa-loop-niter.c (compute_estimated_nb_iterations): ... here.
	(infer_loop_bounds_from_undefined): New.
	(estimate_numbers_of_iterations_loop): Use
	infer_loop_bounds_from_undefined.
	(used_in_pointer_arithmetic_p): New.
	(scev_probably_wraps_p): Pass an extra parameter.  Call
	used_in_pointer_arithmetic_p.  Check that AT_STMT is not null.
	(convert_step): Fix documentation.
	* tree-vrp.c (adjust_range_with_scev): Call instantiate_parameters.
	Use initial_condition_in_loop_num and evolution_part_in_loop_num
	instead of CHREC_LEFT and CHREC_RIGHT.  Adjust the call to
	scev_probably_wraps_p.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9720&r2=2.9721
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-cfg.c.diff?cvsroot=gcc&r1=2.215&r2=2.216
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-chrec.c.diff?cvsroot=gcc&r1=2.22&r2=2.23
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-data-ref.c.diff?cvsroot=gcc&r1=2.35&r2=2.36
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-data-ref.h.diff?cvsroot=gcc&r1=2.10&r2=2.11
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow-inline.h.diff?cvsroot=gcc&r1=2.55&r2=2.56
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-flow.h.diff?cvsroot=gcc&r1=2.131&r2=2.132
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-scalar-evolution.c.diff?cvsroot=gcc&r1=2.34&r2=2.35
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-loop-ivcanon.c.diff?cvsroot=gcc&r1=2.19&r2=2.20
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-loop-ivopts.c.diff?cvsroot=gcc&r1=2.86&r2=2.87
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-loop-niter.c.diff?cvsroot=gcc&r1=2.35&r2=2.36
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-vect-analyze.c.diff?cvsroot=gcc&r1=2.34&r2=2.35
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-vrp.c.diff?cvsroot=gcc&r1=2.51&r2=2.52
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/gcc.dg/tree-ssa/pr22236.c.diff?cvsroot=gcc&r1=NONE&r2=1.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22236