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[Bug 1437467] Re: gcc 4.8: Wrong code for vector doubleword extract

 

------- Comment From wschmidt@xxxxxxxxxx 2015-05-18 17:58 EDT-------
I've verified that this bug has been fixed.  Thanks!

** Tags removed: verification-needed
** Tags added: verification-done

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https://bugs.launchpad.net/bugs/1437467

Title:
  gcc 4.8: Wrong code for vector doubleword extract

Status in gcc-4.8 package in Ubuntu:
  Fix Released
Status in gcc-4.8 source package in Trusty:
  Fix Committed
Status in gcc-4.8 source package in Vivid:
  Fix Released

Bug description:
  ---Problem Description---
  GCC 4.8 produces wrong code for powerpc64le-*-* when extracting the second doubleword of a V2DF or V2DI vector from memory.  This has been fixed upstream as revision r221696.  The revised test gcc/testsuite/gcc.dg/vmx/extract-vsx.c can be used to verify the problem on an unfixed compiler, and to verify the solution on a fixed one.
    
  Machine Type = POWER8 
   
  ---Steps to Reproduce---
   Compile and run the revised gcc/testsuite/gcc.dg/vmx/extract-vsx.c found in the patch, according to the steps in the test case.

  This bug occurs only in GCC 4.8, so if I understand correctly this
  only affects the 14.04 LTS release.  I would like to request that this
  patch be applied in the next point release for 14.04 LTS.

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