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PR/20742
authorspop <spop@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 21 Apr 2005 08:48:55 +0000 (08:48 +0000)
committerspop <spop@138bc75d-0d04-0410-961f-82ee72b054a4>
Thu, 21 Apr 2005 08:48:55 +0000 (08:48 +0000)
commita89ef955863b1fcc19f862bf6c15b02650040f67
treef3f2b4031060687272842eac011220d90325c975
parent0e2551653f01c4cc2cbe2bc67c2711fe73f37a02
PR/20742
* Makefile.in (tree-chrec.o): Depend on params.h.
* 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.

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@98497 138bc75d-0d04-0410-961f-82ee72b054a4
gcc/ChangeLog
gcc/Makefile.in
gcc/doc/invoke.texi
gcc/params.def
gcc/tree-chrec.c
gcc/tree-chrec.h
gcc/tree-scalar-evolution.c