[Bug lto/48492] [4.7 Regression] LTO bootstrap failure in copy_constant

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48492

--- Comment #7 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-04-20 11:18:57 UTC ---
Author: ebotcazou
Date: Wed Apr 20 11:18:50 2011
New Revision: 172767

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172767
Log:
    Backport from mainline
    2011-04-19  Eric Botcazou  <ebotcazou@adacore.com>

    PR lto/48148
    * gimple.c (gimple_types_compatible_p_1) <ENUMERAL_TYPE>: Do not merge
    the types if they have different enumeration identifiers.

    2011-04-18  Eric Botcazou  <ebotcazou@adacore.com>

    PR lto/48492
    * cfgexpand.c (expand_debug_expr) <VAR_DECL>: Return NULL for a
    DECL_IN_CONSTANT_POOL without RTL.

Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/cfgexpand.c
    branches/gcc-4_6-branch/gcc/gimple.c