[Bug tree-optimization/19639] Funny (horrible) code for empty destructor

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-05-11 08:15 -------
Subject: Bug 19639

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	rguenth@gcc.gnu.org	2005-05-11 08:14:45

Modified files:
	gcc            : ChangeLog fold-const.c tree-ssa-propagate.c 
	gcc/testsuite  : ChangeLog 
Added files:
	gcc/testsuite/g++.dg/tree-ssa: pr19807.C 

Log message:
	2005-05-11  Richard Guenther  <rguenth@gcc.gnu.org>
	
	PR middle-end/19807
	PR tree-optimization/19639
	* fold-const.c (try_move_mult_to_index): Handle INTEGER_CST
	and generic summands for char* as s * delta, too, folding &a[i]
	CODE x to &a[i CODE x/s].  Use tree_int_cst_equal
	for comparison of steps.  Convert types for index addition.
	(fold_binary): Adjust the callers to always dispatch to
	try_move_mult_to_index.
	* tree-ssa-propagate.c (set_rhs): Avoid setting rhs to
	expr with non-gimple ARRAY_REF offset.
	
	* g++.dg/tree-ssa/pr19807.C: New testcase.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.8725&r2=2.8726
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/fold-const.c.diff?cvsroot=gcc&r1=1.576&r2=1.577
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-ssa-propagate.c.diff?cvsroot=gcc&r1=2.18&r2=2.19
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/ChangeLog.diff?cvsroot=gcc&r1=1.5463&r2=1.5464
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/testsuite/g++.dg/tree-ssa/pr19807.C.diff?cvsroot=gcc&r1=NONE&r2=1.1



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=19639