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[PATCH, i386]: Fix PR 68491, __get_cpuid with 0 level breaks on early 486

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>
Cc: christos at zoulas dot com
Date: Mon, 1 May 2017 17:42:17 +0200
Subject: [PATCH, i386]: Fix PR 68491, __get_cpuid with 0 level breaks on early 486
Authentication-results: sourceware.org; auth=none

Hello!

> I've been asked to send the patch against trunk here.

I have fixed the PR in a slightly different way.

2017-05-01  Uros Bizjak  <ubizjak@gmail.com>

    PR target/68491
    * config/i386/cpuid.h (__get_cpuid): Always return 0 when
    __get_cpuid_max returns 0.
    (__get_cpuid_count): Ditto.

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

Committed to mainline SVN, and will port to release branches in a
couple of days.

Uros.

Attachment: p.diff.txt
Description: Text document

Follow-Ups:
- Re: [PATCH, i386]: Fix PR 68491, __get_cpuid with 0 level breaks on early 486
  - From: Christos Zoulas

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