[Bug middle-end/48660] [4.5/4.6 Regression] ARM ICE in expand_expr_real_1

["rsandifo at gcc dot gnu.org" <gcc-bugzilla at gcc dot gnu dot org>]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48660

--- Comment #9 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2012-01-06 14:59:51 UTC ---
Author: rsandifo
Date: Fri Jan  6 14:59:47 2012
New Revision: 182956

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=182956
Log:
gcc/
    PR middle-end/48660
    * expr.h (copy_blkmode_to_reg): Declare.
    * expr.c (copy_blkmode_to_reg): New function.
    (expand_assignment): Don't expand register RESULT_DECLs before
    the lhs.  Use copy_blkmode_to_reg to copy BLKmode values into a
    RESULT_DECL register.
    (expand_expr_real_1): Handle BLKmode decls when looking for promotion.

gcc/testsuite/
    PR middle-end/48660
    * g++.dg/pr48660.C: New test.

Added:
    branches/gcc-4_5-branch/gcc/testsuite/g++.dg/pr48660.C
Modified:
    branches/gcc-4_5-branch/gcc/ChangeLog
    branches/gcc-4_5-branch/gcc/expr.c
    branches/gcc-4_5-branch/gcc/expr.h
    branches/gcc-4_5-branch/gcc/testsuite/ChangeLog