https://gcc.gnu.org/bugzilla/show_bug.cgi?id=86771

--- Comment #5 from Christophe Lyon <clyon at gcc dot gnu.org> ---
I think in the "ok" version we have:
add ip, sp, #60
...
ldm ip, {r0, r1}
...
add r2, sp, #72
ldm r2, {r0, r1}

in the "ko" version we have:
ldr r1, [sp, #64]
...
ldr r1, [sp, #76]

So in the "ko" version we do not load r0

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