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

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From: Launchpad Bug Tracker <1437467@xxxxxxxxxxxxxxxxxx>
Date: Fri, 27 Mar 2015 20:10:01 -0000
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---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.

** Affects: gcc-4.8 (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: architecture-ppc64le bugnameltc-123259 severity-medium targetmilestone-inin14042
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gcc 4.8: Wrong code for vector doubleword extract
https://bugs.launchpad.net/bugs/1437467
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