[Bug target/45074] GCC Segmentation fault - negating global register variables

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

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45074

--- Comment #7 from rsandifo at gcc dot gnu.org <rsandifo at gcc dot gnu.org> 2011-06-01 19:49:55 UTC ---
Author: rsandifo
Date: Wed Jun  1 19:49:53 2011
New Revision: 174541

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174541
Log:
gcc/
    PR target/45074
    * optabs.h (valid_multiword_target_p): Declare.
    * expmed.c (extract_bit_field_1): Check valid_multiword_target_p when
    doing multi-word operations.
    * optabs.c (expand_binop): Likewise.
    (expand_doubleword_bswap): Likewise.
    (expand_absneg_bit): Likewise.
    (expand_unop): Likewise.
    (expand_copysign_bit): Likewise.
    (multiword_target_p): New function.

gcc/testsuite/
    PR target/45074
    * gcc.target/mips/pr45074.c: New test.

Added:
    trunk/gcc/testsuite/gcc.target/mips/pr45074.c
Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/expmed.c
    trunk/gcc/optabs.c
    trunk/gcc/optabs.h
    trunk/gcc/testsuite/ChangeLog