------- Comment #3 from pinskia at gcc dot gnu dot org 2007-03-26 22:27 -------
3.2.3 produced:
.L6:
slwi 0,9,2
add 9,9,5
cmpw 0,9,4
stwx 11,3,0
bgelr- 0
b .L6
While 4.1.0 and above produces:
.L4:
add 9,9,5
stw 10,-4(3)
add 3,3,11
subf 0,5,9
cmpw 7,4,0
bgt 7,.L4
If we change "int *" to "char *" and set c to be 2, we get even worse code gen.
3.2.3:
.L9:
stbx 11,3,9
addi 9,9,2
bdnz .L9
blr
4.1.0:
.L4:
add 9,3,11
addi 11,11,2
cmpw 7,4,11
stb 0,-1(9)
bgt 7,.L4
What happened to bdnz and we are now doing *(r9+r3-1) = r0 inside the loop?
--
pinskia at gcc dot gnu dot org changed:
What |Removed |Added
----------------------------------------------------------------------------
Known to fail| |4.1.0 4.2.0 4.3.0
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31358
