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movdqa and movdqu
- From: ranjith kumar <ranjit_kumar_b4u at yahoo dot co dot uk>
- To: gcc-help at gcc dot gnu dot org
- Date: Sun, 1 Jul 2007 20:04:58 +0100 (BST)
- Subject: movdqa and movdqu
Hi,
At what stage ie) in which file gcc(autovectorizer)
selects movdqa/movdqu instruction????
Gcc-4.1.2(autovectorizer) does not support misaligned
stores.
I am trying to improve the gcc to support them.
I found the locations in the code where autovectorizer
stops when it finds unaligned acceses.
I made modifications to it to continue even if it
finds them.
But in the assembly code autovectorizer is using
movdqa instead of movdqu. So i am getting segmentation
fault when I run the code.
How should I proceed???
Thanks in advance.
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