[Bug 1334919] Re: gcc48, gcc49: vect-nop-move.c fails on powerpc64le-unknown-linux-gnu (FSF PR 61542)

CDE Administration 1334919 at bugs.launchpad.net
Mon Jun 29 07:08:30 UTC 2015


test IT123773

** Attachment added: "atta1.txt"
   https://bugs.launchpad.net/ubuntu/+source/gcc-4.8-ppc64el-cross/+bug/1334919/+attachment/4421725/+files/atta1.txt

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https://bugs.launchpad.net/bugs/1334919

Title:
  gcc48, gcc49: vect-nop-move.c fails on powerpc64le-unknown-linux-gnu
  (FSF PR 61542)

Status in gcc-4.8-ppc64el-cross package in Ubuntu:
  New

Bug description:
  ---Problem Description---
  https://gcc.gnu.org/bugzilla/show_bug.cgi?id=61542 describes a problem with the vec_extract operation on a V4SFmode vector on powerpc64le-linux-gnu:

  "A test case (gcc.dg/vect/vect-nop-move.c) was added in 4.9 that
  exposes a bug on PowerPC little endian for extracting an element from
  a V4SF value.  When attempting to extract element N, element 3 - N is
  extracted instead when N <> 3."

  This problem has been fixed upstream in GCC 4.8 (r212050), 4.9 (r212048), and trunk (r212047). The fix should be picked up for 14.04.1 and 14.10, please.
   
   
  Machine Type = Power8 
    
  ---Steps to Reproduce---
  Compile the test case associated with the bug report.

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