[Bug debug/37022] [4.4 regression] internal compiler error: in compute_barrier_args_size

[xuepeng dot guo at intel dot com]

------- Comment #11 from xuepeng dot guo at intel dot com  2008-08-12 02:11 -------
(In reply to comment #9)
> The darwin -m64 failures are then the same problem, cross-jumping of noreturn
> calls between different level of stack depths.
> I've been wrong about DW_CFA_GNU_args_size being useless for cfa.reg !=
> STACK_POINTER_REGNUM, while such directives won't ever be used by the libgcc
> unwinder, they might be used by debuggers to set correct value of stack
> pointer,
> and therefore such directives aren't useless and so we should avoid
> crossjumping
> in that case.  Not sure how to detect that in crossjumping code though.

You are right. IMHO this is exactly the reason.


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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=37022