------- Comment #3 from pinskia at gcc dot gnu dot org 2006-10-19 23:16 -------
The difference between with and without -fnon-call-exceptions is:
insn 10 9 11 3 (set (reg/f:SI 196)
(mem/s/f/j:SI (reg/v/f:SI 194 [ t ]) [0 <variable>.f13+0 S4 A32])) -1
(nil)
(nil))
vs:
(insn 10 9 11 3 (set (reg:SI 196)
(mem/s/f/j:SI (reg/v/f:SI 194 [ t ]) [0 <variable>.f13+0 S4 A32])) -1
(nil)
(nil))
Note in the case where it is set, we record 196 as a pointer so we know that
pointers don't wrap so we decide that pointer+1 can never be 0 in CSE.
--
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=29519
