[Bug rtl-optimization/49088] Combine fails to properly handle zero-extension and signed int constant

[hjl at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49088

--- Comment #10 from hjl at gcc dot gnu.org <hjl at gcc dot gnu.org> 2011-05-27 
13:38:45 UTC ---
Author: hjl
Date: Fri May 27 13:38:41 2011
New Revision: 174332

URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=174332
Log:
Properly handle CONST_INT operands.

2011-05-21  H.J. Lu  <hongjiu...@intel.com>

    PR rtl-optimization/49088
    * combine.c (force_to_mode): If X is narrower than MODE and we
    want all the bits in X's mode, just use the operand when it
    is CONST_INT.

Modified:
    branches/x32/gcc/ChangeLog.x32
    branches/x32/gcc/combine.c