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[PATCH, i386]: Use ssememalign attribute value to reject insns with misaligned operands

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: Thu, 12 Nov 2015 09:17:32 +0100
Subject: [PATCH, i386]: Use ssememalign attribute value to reject insns with misaligned operands
Authentication-results: sourceware.org; auth=none

Hello!

Attached patch uses ssememalign attribute to reject insn combinations
where memory operands would be misaligned.

2015-11-12  Uros Bizjak  <ubizjak@gmail.com>

    * config/i386/i386.c (ix86_legitimate_combined_insn): Reject
    combined insn if the alignment of vector mode memory operand
    is less than ssememalign.

testsuite/ChangeLog:

2015-11-12  Uros Bizjak  <ubizjak@gmail.com>

    * gcc.target/i386/sse-1.c (swizzle): Assume that a is
    aligned to 64 bits.

Patch was bootstrapped and regression tested on x86_64-linux-gnu
{,-m32}, committed to mainline SVN.

Uros.

Attachment: p.diff.txt
Description: Text document

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