[Bug middle-end/48335] [4.6/4.7 Regression] ICE in convert_move

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48335

--- Comment #8 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-04-06 20:39:24 UTC ---
Author: jakub
Date: Wed Apr  6 20:39:20 2011
New Revision: 172063

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=172063
Log:
    Backported from mainline
    2011-04-01  Jakub Jelinek  <jakub@redhat.com>

    PR middle-end/48335
    * expr.c (expand_assignment): Handle all possibilities
    if TO_RTX is CONCAT.
    * expmed.c (store_bit_field_1): Avoid trying to create
    invalid SUBREGs.
    (store_split_bit_field): If SUBREG_REG (op0) or
    op0 itself has smaller mode than word, return it
    for offset 0 and const0_rtx for out-of-bounds stores.
    If word is const0_rtx, skip it.

    * gcc.c-torture/compile/pr48335-1.c: New test.
    * gcc.dg/pr48335-1.c: New test.
    * gcc.dg/pr48335-2.c: New test.
    * gcc.dg/pr48335-3.c: New test.
    * gcc.dg/pr48335-4.c: New test.
    * gcc.dg/pr48335-5.c: New test.
    * gcc.dg/pr48335-6.c: New test.
    * gcc.dg/pr48335-7.c: New test.
    * gcc.dg/pr48335-8.c: New test.
    * gcc.target/i386/pr48335-1.c: New test.

Added:
    branches/gcc-4_6-branch/gcc/testsuite/gcc.c-torture/compile/pr48335-1.c
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48335-1.c
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48335-2.c
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48335-3.c
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48335-4.c
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48335-5.c
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48335-6.c
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48335-7.c
    branches/gcc-4_6-branch/gcc/testsuite/gcc.dg/pr48335-8.c
    branches/gcc-4_6-branch/gcc/testsuite/gcc.target/i386/pr48335-1.c
Modified:
    branches/gcc-4_6-branch/gcc/ChangeLog
    branches/gcc-4_6-branch/gcc/expmed.c
    branches/gcc-4_6-branch/gcc/expr.c
    branches/gcc-4_6-branch/gcc/testsuite/ChangeLog