x86-64 bootstrap broken (was Re: [PATCH] tree level if-conversion for vectorizer)

Devang Patel dpatel@apple.com
Sat Sep 4 20:50:00 GMT 2004


On Sep 4, 2004, at 1:39 PM, Jan Hubicka wrote:

>>
>> Would it be possible to send me preprocessed source ?
>> I do not have access to x86-64 box and ppc-linux box
>> in the lab has decided to not respond at the moment.
>
> Well, the problem is that the same source works fine with stage1
> compiler and crash in stage2, so what we are facing is an
> misscompilation of gcc itself.

When -fdump-tree-ifcvt-stats is enabled, GCC emits
"Applying if-conversion" string in status file (.ifcvt).
It does not if-convert many loops, so it would be helpful
you can identify mis-compiled object file.

Meanwhile I'll try if I can reproduce it on powerpc-darwin.
I have started couple of bootstrap. Lets see. I'll be
offline couple for hours.

>  It however crashed for me on
> i686-pc-linux box too.


-
Devang



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