https://gcc.gnu.org/bugzilla/show_bug.cgi?id=40361
--- Comment #2 from Andrew Pinski <pinskia at gcc dot gnu.org> ---
So the cross jumping opportunity since at least 5.4 even with a conditional
return.
ldr r3, .L8
stmfd sp!, {r4, lr}
ldr r3, [r3]
ldr r4, .L8+4
cmp r3, #0
bge .L2
bl bar1
ldr r3, [r4]
cmp r3, #0
ldmgefd sp!, {r4, pc}
.L3:
mov r3, #0
str r3, [r4]
ldmfd sp!, {r4, pc}
.L2:
bl bar2
ldr r3, [r4]
cmp r3, #0
blt .L3
ldmfd sp!, {r4, pc}
The trunk produces this:
push {r4, lr}
ldr r4, .L9
ldr r3, [r4]
cmp r3, #0
bge .L2
bl bar1
.L8:
ldr r3, [r4, #4]
cmp r3, #0
movlt r3, #0
strlt r3, [r4, #4]
pop {r4, pc}
.L2:
bl bar2
b .L8
Which is even more cross jumped and note push and stmfd are the same here just
written differently.
