* config/rs6000/rs6000.c (rs6000_emit_move): Do not

special-case HOST_BITS_PER_WIDE_INT != 32.  Use same criteria
for generating CONST_INT and CONST_DOUBLE.


* config/rs6000/rs6000.c (logical_operand): CONST_INTs are
already sign-extended.
(rs6000_emit_prologue): Make register iterator signed.
(rs6000_emit_epilogue): Likewise.
* config/rs6000/rs6000.md (addsi3, adddi3): Sign-extend high
and low.
(movsf split, movdf split): Sign-extend CONST_INTs.
(movdi splits): Likewise.


git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@41282 138bc75d-0d04-0410-961f-82ee72b054a4