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[Bug tree-optimization/42286] October 23rd change to tree-ssa-pre.c breaks calculix on powerpc with -ffast-math
- From: "dje at gcc dot gnu dot org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 5 Jan 2010 15:47:15 -0000
- Subject: [Bug tree-optimization/42286] October 23rd change to tree-ssa-pre.c breaks calculix on powerpc with -ffast-math
- References: <bug-42286-15150@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #5 from dje at gcc dot gnu dot org 2010-01-05 15:47 -------
sqrt(-0) = -0 and 0 is a discontinuity for atan2
Either sqrt should return +0 or atan2 should force +0 if games with signed
zeros are allowed.
--
dje at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|UNCONFIRMED |NEW
Ever Confirmed|0 |1
Last reconfirmed|0000-00-00 00:00:00 |2010-01-05 15:47:15
date| |
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42286