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[Bug middle-end/32279] Fold 1.0/sqrt(x/y) to sqrt(y/x)
- From: "uros at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 11 Jun 2007 09:09:39 -0000
- Subject: [Bug middle-end/32279] Fold 1.0/sqrt(x/y) to sqrt(y/x)
- References: <bug-32279-10053@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from uros at gcc dot gnu dot org 2007-06-11 09:09 -------
Subject: Bug 32279
Author: uros
Date: Mon Jun 11 09:09:24 2007
New Revision: 125614
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=125614
Log:
PR middle-end/32279
* fold-const (fold_binary) [RDIV_EXPR]: Optimize a/sqrt(b/c)
into a*sqrt(c/b) if flag_unsafe_math_optimizations is set.
testsuite/ChangeLog:
PR middle-end/32279
* gcc.dg/builtins-11.c: Also check folding of a/sqrt(b/c).
Modified:
trunk/gcc/ChangeLog
trunk/gcc/fold-const.c
trunk/gcc/testsuite/ChangeLog
trunk/gcc/testsuite/gcc.dg/builtins-11.c
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32279