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[Bug testsuite/51693] New XPASSes in vectorizer testsuite on powerpc64-suse-linux
- From: "irar at il dot ibm.com" <gcc-bugzilla at gcc dot gnu dot org>
- To: gcc-bugs at gcc dot gnu dot org
- Date: Wed, 28 Dec 2011 13:11:53 +0000
- Subject: [Bug testsuite/51693] New XPASSes in vectorizer testsuite on powerpc64-suse-linux
- Auto-submitted: auto-generated
- References: <bug-51693-4@http.gcc.gnu.org/bugzilla/>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51693
--- Comment #5 from Ira Rosen <irar at il dot ibm.com> 2011-12-28 13:11:53 UTC ---
(In reply to comment #4)
> In vect-peel-3.c we actually assume that vector length is 16 byte. Here is the
> loop body:
> suma += ia[i];
> sumb += ib[i+5];
> sumc += ic[i+1];
> When vector-size is 16, then peeling can make two of three accesses aligned,
> but when vector size is 32 that's impossible. That's why using
> vector_sizes_32B_16B might be correct here.
Ah, now I understand. I was confused by vect_aligned_arrays, and it's
irrelevant here, right?
Yes, vector_sizes_32B_16B seems to be ok in that case.
Thanks,
Ira