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[Bug target/42542] Vectorizer produces incorrect results on max of signed intergers
- From: "hjl dot tools at gmail dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 30 Dec 2009 04:47:33 -0000
- Subject: [Bug target/42542] Vectorizer produces incorrect results on max of signed intergers
- References: <bug-42542-5724@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #9 from hjl dot tools at gmail dot com 2009-12-30 04:47 -------
Hi Richard, the code in question is added by
http://gcc.gnu.org/ml/gcc-patches/2005-06/msg02185.html
I don't quite understand how it can properly handle unsigned V4SI
underflow in V4SI vector subtraction.
--
hjl dot tools at gmail dot com changed:
What |Removed |Added
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CC| |rth at gcc dot gnu dot org
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42542