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[PATCH, i386]: fix PR 66922, wrong code for bit-field struct

From: Uros Bizjak <ubizjak at gmail dot com>
To: "gcc-patches at gcc dot gnu dot org" <gcc-patches at gcc dot gnu dot org>
Date: Sat, 18 Jul 2015 11:57:49 +0200
Subject: [PATCH, i386]: fix PR 66922, wrong code for bit-field struct
Authentication-results: sourceware.org; auth=none

We have to reject misaligned insertions and extractions from
ix86_expand_pextr and  ix86_expand_pinsr.

2015-07-18  Uros Bizjak  <ubizjak@gmail.com>

    PR target/66922
    * config/i386/i386.c (ix86_expand_pextr): Reject extractions
    from misaligned positions.
    (ix86_expand_pinsr): Reject insertions to misaligned positions.

testsuite/ChangeLog:

2015-07-18  Uros Bizjak  <ubizjak@gmail.com>

    PR target/66922
    * gcc.target/i386/pr66922.c: New test.

Bootstrapped and regression tested on x86_64-linux-gnu {,-m32}.

Committed to mainline SVN and release branches.

Uros.

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