[Bug bootstrap/49815] [4.7 regression] ICE in cselib_record_set, at cselib.c:2241 compiling 64-bit libjava on SPARC

[ebotcazou at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49815

--- Comment #9 from Eric Botcazou <ebotcazou at gcc dot gnu.org> 2011-07-22 14:37:50 UTC ---
> Ah, I see.  adjust_insn call isn't guarded by MAY_HAVE_DEBUG_STMTS, therefore
> if -fvar-tracking-assignments gives up due to insanely large hash tables, it
> won't be reset during vt_finalize.

My assumption as well.

> BTW, wouldn't it be better to model the insn completely rather than partially?
> In particular, in addition to the arguments being copied have also the
> copy/clobber for all the other arguments, except for the sp = sp - something
> which would be another set.

What other arguments?  Does vt_add_function_parameters not see them all?  I'm
not sure I understand the need to model the stack decrement either given that
the CFA register is the frame pointer.