Hi,
I am working on a micro controller and trying to port gcc(4.3.2) for it.
Not the compiling process runs into the following error:
a.c: In function 'task':
a.c:150: error: unrecognizable insn:
(insn 479 478 320 19 a:381 (set (reg:SI 12 a12)
(plus:SI (mult:SI (reg:SI 9 a9 [204])
(const_int 4 [0x4]))
(reg:SI 12 a12))) -1 (nil))
a.c:150: internal compiler error: in extract_insn, at recog.c:1990
Please submit a full bug report, ...
This insn is generated in greg pass from another insn:
(insn 320 308 309 19 a.c:381 (set (reg:SI 207 [ <variable>.wrData ])
(mem/s:SI (plus:SI (mult:SI (reg:SI 204)
(const_int 4 [0x4]))
(reg/f:SI 234)) [5 <variable>.wrData+0 S4 A32])) 3 {movsi}
(expr_list:REG_DEAD (reg:SI 204)
(nil)))
I surfed the web a bit and found similar gcc bug report 37436
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37436.
But basically they are not same.
Can someone show me the possible places where insn#479 is generated in
reload.c or reload1.c?
Thanks!
Qifei Fan
