[Bug target/49114] [x32] 454.calculix in SPEC CPU 2006 failed

[hjl.tools at gmail dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49114

--- Comment #1 from H.J. Lu <hjl.tools at gmail dot com> 2011-05-24 04:40:08 UTC ---
gen_reload generates wrong code for

(gdb) call debug_rtx (out)
(reg:SI 1 dx)
(gdb) call debug_rtx (in)
(plus:SI (subreg:SI (reg/v/f:DI 182 [ b ]) 0)
    (const_int 8 [0x8]))
(gdb) 

when dx contains DI 182 [ b ].  gen_reload first
puts (const_int 8 [0x8]) in dx and then replaces
DI 182 [ b ] with dx.