------- Comment #22 from chrbr at gcc dot gnu dot org  2010-01-28 13:09 -------
humm, looks like a latent bug. Accidentally the CP is inserted before a
compact_jump, which enable further redirect jump optimisation. I don't think it
is directly related to the fix, but lets work it a little bit more.

so we have just before dbr:
jump_insn -> 2586
a constant pool
L2586
jump_insn -> 3394

L3394: ...

then in reorg_redirect_jump we redirect the jump over the CP and
delete_related_insn so the code between the CP and the jump becomes dead.

and we have 

jump_insn -> 3394
a constant pool

L3394
...

but the label L2586 is used in the exception table... and thus remains
undefined.

now my question: how the exception table can refer to a region delimited by
deleted labels. It's should be built after dbr isn't it ?


-- 


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=42841

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