[Bug 1311128] Re: Please incorporate gcc 4.8 revision 209515

[Launchpad Bug Tracker]

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: gcc-4.8 (Ubuntu Untitled)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1311128

Title:
  Please incorporate gcc 4.8 revision 209515

Status in “gcc-4.8” package in Ubuntu:
  Confirmed
Status in “gcc-4.8” source package in Trusty:
  Confirmed
Status in “gcc-4.8” source package in u-series:
  Confirmed

Bug description:
  From another, less public, bug:

  Text by Bill Schmidt:

  A GCC bug was found in the little endian vector API that affects use
  of the vec_mergeh and vec_mergel interfaces when VSX is enabled (this
  is the default for Power8). These interfaces produce the wrong results
  for 4x32 vector types (vector int of either signedness, vector float).
  The upstream patch fixes this issue.

  
  (bug internally reported by Thierry Fauck; fixed upstream by Bill Schmidt.)

  SVN revision in FSF 4.8 branch: 209515
  http://gcc.gnu.org/viewcvs/gcc?view=revision&revision=209515

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