------- Comment #1 from kkojima at gcc dot gnu dot org 2008-07-10 01:27 -------
Created an attachment (id=15882)
--> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=15882&action=view)
A reduced test case for -O0
Before r137639, the insn in problem was
(insn 200 330 331 20 yyy.cc:181 (set (mem/c:SI (plus:SI (reg:SI 6 r6)
(const_int 0 [0x0])) [0 D.2244+4 S8 A32])
(reg:SI 1 r1 [261])) 175 {movsi_ie} (nil))
and now the memory address is reloaded like as
(insn 331 330 200 20 xxx.cc:181 (set (reg:SI 2 r2)
(plus:SI (reg:SI 6 r6)
(const_int 0 [0x0]))) 35 {*addsi3_compact} (nil))
(insn 200 331 332 20 xxx.cc:181 (set (mem/c:SI (reg:SI 2 r2) [0 D.2244+4 S8
A32])
(reg:SI 1 r1 [261])) 175 {movsi_ie} (nil))
but SH has no add instruction whose destination and source differs.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=36780
