[Bug middle-end/23971] [4.0/4.1 Regression] synth_mult running amok

[cvs-commit at gcc dot gnu dot org]

------- Additional Comments From cvs-commit at gcc dot gnu dot org  2005-09-21 16:48 -------
Subject: Bug 23971

CVSROOT:	/cvs/gcc
Module name:	gcc
Changes by:	kazu@gcc.gnu.org	2005-09-21 16:47:47

Modified files:
	gcc            : ChangeLog 

Log message:
	PR middle-end/23971
	* expmed.c (alg_code): Add alg_impossible.
	(alg_hash_entry): Add cost.
	(synth_mult): Record alg_impossible in the hash table if
	multiplication by a given integer is impossble within the
	limit.  Speed up using alg_impossible.

Patches:
http://gcc.gnu.org/cgi-bin/cvsweb.cgi/gcc/gcc/ChangeLog.diff?cvsroot=gcc&r1=2.9997&r2=2.9998



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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=23971