https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55190
--- Comment #6 from Oleg Endo <olegendo at gcc dot gnu.org> ---
Another example:
const char* test (const char* s0, int c, int* rout)
{
int r = 0;
for (int i = 0; i < c; ++i)
// r += s0[i];
r += *s0++;
*rout = r;
return s0;
}
On SH compiles to:
_test:
cmp/pl r5
bf .L4
mov r4,r3 // r3 = s0
add r5,r4 // r4 = s0 + c
mov r4,r1 // r1 = s0 + c
mov #0,r2
sub r3,r1 // r1 = (s0 + c) - s0 = c (d'uh)
.align 2
.L3:
mov.b @r3+,r7
dt r1
bf/s .L3
add r7,r2
.L2:
mov.l r2,@r6
rts
mov r4,r0
.align 1
.L4:
bra .L2
mov #0,r2
