[Bug bootstrap/51974] New: GCC fails to bootstrap with --enable-checking=release on opensuse

["nenad at intrepid dot com" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=51974

             Bug #: 51974
           Summary: GCC fails to bootstrap with --enable-checking=release
                    on opensuse
    Classification: Unclassified
           Product: gcc
           Version: 4.7.0
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: bootstrap
        AssignedTo: unassigned@gcc.gnu.org
        ReportedBy: nenad@intrepid.com
              Host: Opensuse 12.1 x86_64
            Target: x86_64-unknown-linux-gnu


I tried to build the latest trunk (183442) with --enable-checking=release on
the Opensuse 12.1 x86_64 host. Checking between stage2 and stage3 fails. 

Bootstrap comparison failure!
gcc/tree-ssa-dom.o differs
gcc/tree-ssa-structalias.o differs
gcc/final.o differs
gcc/combine.o differs
gcc/reload1.o differs
gcc/tree-ssa-ccp.o differs
gcc/tree-ssa.o differs

This version passes on Fedora Core 15 x86_64. Anyone seen this? I am seeing the
following differences:

reload1.o:stage2

    30b4:    0f 1f 40 00              nopl   0x0(%rax)
    30b8:    41 8b 57 08              mov    0x8(%r15),%edx
    30bc:    83 c2 7d                 add    $0x7d,%edx
    30bf:    e9 7c fe ff ff           jmpq   2f40
<_ZL16free_for_value_pi12machine_modei11reload_typeP7rtx_defS2_ii+0x1c0>

    b0d4:    0f 1f 40 00              nopl   0x0(%rax)
    b0d8:    48 63 f6                 movslq %esi,%rsi
    b0db:    48 29 70 18              sub    %rsi,0x18(%rax)
    b0df:    e9 3c fe ff ff           jmpq   af20
<_ZL19elimination_effectsP7rtx_def12machine_mode+0xe0>


reload1.o:stage3
    30c8:    41 8b 57 08              mov    0x8(%r15),%edx
    30cc:    83 c2 7d                 add    $0x7d,%edx
    30cf:    e9 7c fe ff ff           jmpq   2f50
<_ZL16free_for_value_pi12machine_modei11reload_typeP7rtx_defS2_ii+0x1c0>
    30d4:    0f 1f 40 00              nopl   0x0(%rax)

    b0e8:    48 63 f6                 movslq %esi,%rsi
    b0eb:    48 29 70 18              sub    %rsi,0x18(%rax)
    b0ef:    e9 3c fe ff ff           jmpq   af30
<_ZL19elimination_effectsP7rtx_def12machine_mode+0xe0>
    b0f4:    0f 1f 40 00              nopl   0x0(%rax)