m32c-elf, gcc.dg/torture/stackalign/nested-1 at -O0,
produces this code:
_bar.1229:
enter #0
pushm r1,r2,r3,a0,a1
; end of prologue
mov.l a0,r3r1
add.l #-66,sp
stc sp,a1
. . .
ldc a1,sp
; start of epilogue
popm r1,r2,r3,a0,a1
exitd
Note that the $sp restored just before the epilogue is NOT the value
of $sp at the end of the prologue, so the wrong registers get popped.
(the exitd works because it uses the frame pointer).
EXIT_IGNORE_STACK is set to 0.
Is this expected behavior? Do I need to do some magic in my epilogue
to further "fix" the stack pointer?
Note: the add.l is not part of the prologue; the "end of prologue"
comment is a volatile unspec; the pushm is the last thing emitted by
the prolog function. The '#0' on the enter is the stack adjustment
the prologue does.
