[Bug 1727540] Re: add support for thunderx2 cores

[Launchpad Bug Tracker]

This bug was fixed in the package gcc-5 - 5.5.0-3ubuntu1

---------------
gcc-5 (5.5.0-3ubuntu1) bionic; urgency=medium

  * Merge with Debian; remaining changes:
    - Build from upstream sources.

gcc-5 (5.5.0-3) unstable; urgency=medium

  * Add thunderx2 support for Linaro builds (Dann Frazier). LP:
#1727540.

 -- Matthias Klose <doko at ubuntu.com>  Wed, 01 Nov 2017 13:58:41 +0100

** Changed in: gcc-5 (Ubuntu Bionic)
       Status: In Progress => Fix Released

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https://bugs.launchpad.net/bugs/1727540

Title:
  add support for thunderx2 cores

Status in gcc-5 package in Ubuntu:
  Fix Released
Status in gcc-5 source package in Xenial:
  In Progress
Status in gcc-5 source package in Zesty:
  New
Status in gcc-5 source package in Artful:
  In Progress
Status in gcc-5 source package in Bionic:
  Fix Released

Bug description:
  [Impact]
  gcc-5 doesn't know about thunderx2 cores, so optimization flags for this target will fail. While it is possible to generate the same code by referencing the previous name of the core (vulcan), that is non-obvious to the end user.

  [Test Case]
  gcc-5 hello.c -o hello -mcpu=thunderx2t99
  hello.c:1:0: error: unknown value ‘thunderx2t99’ for -mcpu
   #include <stdio.h>
   ^

  [Regression Risk]
  The patchset includes a rename of the "vulcan" core to "thunderx2t99". It retains backwards compatibility with the "vulcan" name to avoid regressing users that may already be using that name.

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