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[Bug tree-optimization/32309] Unnecessary conversion from short to unsigend short breaks vectorization
- From: "gangren at google dot com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: 12 Jun 2007 17:28:57 -0000
- Subject: [Bug tree-optimization/32309] Unnecessary conversion from short to unsigend short breaks vectorization
- References: <bug-32309-14687@http.gcc.gnu.org/bugzilla/>
- Reply-to: gcc-bugzilla at gcc dot gnu dot org
------- Comment #2 from gangren at google dot com 2007-06-12 17:28 -------
(In reply to comment #1)
> The conversions are not Unnecessary, they are necessary because
> short_var+short_var when that would overflow the range of short is still
> defined.
>
Do you mean that short_var + short_var is defined as (short)((unsigned
short)short_var + (unsigned short)short_var)?
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=32309