------- Additional Comments From cvs-commit at gcc dot gnu dot org 2005-06-06
12:13 -------
Subject: Bug 20742
CVSROOT: /cvs/gcc
Module name: gcc
Branch: gcc-4_0-branch
Changes by: [EMAIL PROTECTED] 2005-06-06 12:12:53
Modified files:
gcc : ChangeLog params.def tree-chrec.c tree-chrec.h
tree-scalar-evolution.c
gcc/doc : invoke.texi
Log message:
PR tree-optimization/20742
* params.def (PARAM_SCEV_MAX_EXPR_SIZE): New parameter with
default value 20.
* tree-chrec.c: Depend on params.h. Replace build with buildN,
and fold build with fold_buildN.
(chrec_fold_plus_1): Fail with a chrec_don_know when the size of
the expression exceeds PARAM_SCEV_MAX_EXPR_SIZE.
(tree_contains_chrecs): Compute an estimation of the size of the
given expression.
* tree-chrec.h (tree_contains_chrecs): Modify its declaration.
(tree_does_not_contain_chrecs): Update the use of tree_contains_chrecs.
* tree-scalar-evolution.c (simple_iv): Ditto.
* doc/invoke.texi (scev-max-expr-size): Documented.
Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.7592.2.279&r2=2.7592.2.280
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/params.def.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.54.6.1&r2=1.54.6.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-chrec.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.12.12.2&r2=2.12.12.3
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-chrec.h.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.6&r2=2.6.14.1
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/tree-scalar-evolution.c.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=2.17.4.1&r2=2.17.4.2
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/doc/invoke.texi.diff?cvsroot=gcc&only_with_tag=gcc-4_0-branch&r1=1.583.2.18&r2=1.583.2.19
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=20742
