This is the mail archive of the
gcc-bugs@gcc.gnu.org
mailing list for the GCC project.
[Bug tree-optimization/67971] Failure to unify conditional argument selection with conditional result selection
- From: "rguenth at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Thu, 15 Oct 2015 09:43:18 +0000
- Subject: [Bug tree-optimization/67971] Failure to unify conditional argument selection with conditional result selection
- Auto-submitted: auto-generated
- References: <bug-67971-4 at http dot gcc dot gnu dot org/bugzilla/>
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67971
Richard Biener <rguenth at gcc dot gnu.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|ASSIGNED |RESOLVED
Resolution|--- |INVALID
--- Comment #2 from Richard Biener <rguenth at gcc dot gnu.org> ---
Ah, because they may be NaN if x or y were NaN. Works ok with
-ffinite-math-only,
PRE already figures out the result is 1.
Thus invalid.
And thus if we performed this simplification on GENERIC somehow that was likely
an invalid transform.