** Description changed:

  [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>
   ^
  
+ Also test that -mcpu=vulcan still works, to check for regressions.
+ 
  [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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https://bugs.launchpad.net/bugs/1727540

Title:
  add support for thunderx2 cores

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