internal compiler error: in reload_combine_note_use, at postreload.c:1093

[daniel tian]

Thank you for your advice.

Yes. I checked the MD file and relative machine.h/.c, there are some
places which call the ''force_reg' unconditionally. I modified the it
in "movm" insn pattern, the error still exists. And I also check the
mips/arm, they also call 'force_reg' unconditional in some places.

Anything I missed?

2009/5/13 Dave Korn <dave.korn.cygwin@googlemail.com>:
> daniel tian wrote:
>> I have ported gcc4.0.2  to 32bit RISC chip. But internal compiler
>> error happened: in reload_combine_note_use, at postreload.c:1093 . I
>> tracked the code with insight.  error occurred in "CASE REG", when the
>> register number is larger than FIRST_PSEUDO_REGISTER. Does this mean
>> the reload register allocation failed?  What I know is that there is
>> no pseudo register used after reload completed (Is this right?).
>
>  Yes, this is correct.
>
>> Can anyone give me some advice?
>
>  It is most likely one of the expanders or other patterns in your MD file is
> unconditionally calling a function such as force_reg() without checking the
> reload_completed / reload_in_progress flags.  If this pattern gets invoked
> post-reload, that will allocate a pseudo and then fail later.
>
>    cheers,
>      DaveK
>
>
>