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Re: ICE building libgcc2.c for MIPS, too
Sandra Loosemore <sandra@codesourcery.com> writes:
> #6 0x0875dc03 in rest_of_handle_combine ()
> at /scratch/sandra/mips-mainline/src/gcc-mainline/gcc/combine.c:1264
>
> ...
>
> Looks like a job for valgrind? But I'm out of time for working on
> this, at least for now. Can anyone else take a stab at it?
I am seeing the same thing. The issues is basically that after the
no_new_pseudoes change mips_split_symbol through mips_force_temporary
will create new pseudos during combine. The regnumber of these regs
will address out of the reg_stat array in combine.
This is incorrect as in combine you are supposed to use the scratch
register that combine provides through a clobber clause which AFAIK is
always an existing pseudo. I am planning to fix this by changing
mips_split_symbol to use the scratch register instead of a new pseudo
when invoked from a splitter. I will try to get the patch tested
overnight.
Adam