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r195507 - in /trunk/gcc: ChangeLog testsuite/Ch...
- From: jakub at gcc dot gnu dot org
- To: gcc-cvs at gcc dot gnu dot org
- Date: Mon, 28 Jan 2013 14:43:03 -0000
- Subject: r195507 - in /trunk/gcc: ChangeLog testsuite/Ch...
Author: jakub
Date: Mon Jan 28 14:43:03 2013
New Revision: 195507
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=195507
Log:
PR tree-optimization/56125
* tree-ssa-math-opts.c (gimple_expand_builtin_pow): Don't optimize
pow(x,c) into sqrt(x) * powi(x, n/2) or
1.0 / (sqrt(x) * powi(x, abs(n/2))) if c is an integer or when
optimizing for size.
Don't optimize pow(x,c) into powi(x, n/3) * powi(cbrt(x), n%3) or
1.0 / (powi(x, abs(n)/3) * powi(cbrt(x), abs(n)%3)) if 2c is an
integer.
* gcc.dg/pr56125.c: New test.
Added:
trunk/gcc/testsuite/gcc.dg/pr56125.c
Modified:
trunk/gcc/ChangeLog
trunk/gcc/testsuite/ChangeLog
trunk/gcc/tree-ssa-math-opts.c