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[PATCH, middle-end]: Fix PR88129, Two blockage insns are emitted in the function epilogue

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: Richard Guenther <rguenther at suse dot de>, Eric Botcazou <ebotcazou at adacore dot com>
Date: Wed, 21 Nov 2018 20:44:46 +0100
Subject: [PATCH, middle-end]: Fix PR88129, Two blockage insns are emitted in the function epilogue

Hello!

Attached patch removes extra blockage insn generation. For the
software archaeology, please see the PR [1], where it was determined,
that the removed part is probably a dataflow branch to trunk merge
oversight.

2018-11-21  Uros Bizjak  <ubizjak@gmail.com>

    PR middle-end/88129
    * function.c (expand_function_end): Do not emit extra blockage insn.

Patch was bootstrapped and regression tested on x86_64-linux-gnu
{,-m32} for all default languages, obj-c++ and go.

OK for mainline?

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88129

Uros.

Attachment: r.diff.txt
Description: Text document

Follow-Ups:
- Re: [PATCH, middle-end]: Fix PR88129, Two blockage insns are emitted in the function epilogue
  - From: Richard Biener

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