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[PATCH PR63530] Fix the pointer alignment in vectorization

From: Carrot Wei <carrot at google dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Cc: Cong Hou <congh at google dot com>, Luis Lozano <llozano at google dot com>, Caroline Tice <cmtice at google dot com>
Date: Fri, 17 Oct 2014 10:58:23 -0700
Subject: [PATCH PR63530] Fix the pointer alignment in vectorization
Authentication-results: sourceware.org; auth=none

Hi

In current vectorization pass, when a new vector pointer is created,
its alignment is not set correctly. We should use DR_MISALIGNMENT (dr)
since only this alignment is adjusted when loop peeling or multi
version is occurred.

This patch passed following tests:
x86_64 bootstrap.
x86_64 regression test.
armv7 regression test.

OK for trunk and 4.9 branch?

thanks
Guozhi Wei

2014-10-17  Guozhi Wei  <carrot@google.com>

        PR tree-optimization/63530
        tree-vect-data-refs.c (vect_create_addr_base_for_vector_ref): Set
        pointer alignment according to DR_MISALIGNMENT.

Attachment: patch
Description: Binary data

Follow-Ups:
- Re: [PATCH PR63530] Fix the pointer alignment in vectorization
  - From: Richard Biener

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