[Bug middle-end/49489] [4.7 Regression] gcc.c-torture/execute/builtin-bitops-1.c fails on x86_64-linux

[jakub at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49489

--- Comment #1 from Jakub Jelinek <jakub at gcc dot gnu.org> 2011-06-21 
16:26:03 UTC ---
Author: jakub
Date: Tue Jun 21 16:25:57 2011
New Revision: 175265

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=175265
Log:
    PR middle-end/49489
    * builtins.c (expand_builtin_unop): Call expand_unop with 0 as
    unsignedp argument instead of 1 for clrsb_optab.
    (fold_builtin_bitop): Fix masking for width > HOST_BITS_PER_WIDE_INT
    and < 2 * HOST_BITS_PER_WIDE_INT.  Optimize BUILT_IN_CLRSB*.
    (fold_builtin_1): Call fold_builtin_binop for BUILT_IN_CLRSB*.
    * optabs.c (widen_leading): Call widen_operand and expand_unop
    with 0 as unsignedp argument instead of 1 for clrsb_optab.
    (expand_unop): Subtract difference of mode sizes also for
    clrsb_optab.

Modified:
    trunk/gcc/ChangeLog
    trunk/gcc/builtins.c
    trunk/gcc/optabs.c