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Patch to fix a bug in LRA inheritance

From: Vladimir Makarov <vmakarov at redhat dot com>
To: GCC Patches <gcc-patches at gcc dot gnu dot org>
Date: Fri, 11 Jul 2014 13:21:25 -0400
Subject: Patch to fix a bug in LRA inheritance
Authentication-results: sourceware.org; auth=none

The following patch fixes a bug in LRA inheritance found on compiling abig file on s390x. Unfortunately, the bug is very hard to reproduce andthe test is too big and can not be included. But even if it wereincluded, checking a correct code generation would be a problem too.

The bug was in undoing inheritance transformation. Not all inheritancepseudo occurrences were removed which resulted in reading a garbage frommemory.


The patch was successfully bootstrapped and tested on x86-64.

Committed to the trunk as rev. 212464.

2014-07-11  Vladimir Makarov  <vmakarov@redhat.com>

        * lra-constraints.c (remove_inheritance_pseudos): Process
        destination pseudo too.

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