Re: Mono 4.6.1 FTBFS on mipsel
The Runtime is supposed to lower 64 bit ops to sets of 32 bit ones. Will try to determine why that isn't happening
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> On 8 Oct 2016, at 15:18, Aurelien Jarno <aurelien@aurel32.net> wrote:
>
>> On 2016-10-08 13:42, Aurelien Jarno wrote:
>>> On 2016-10-07 21:04, Jo Shields wrote:
>>> Dear MIPS team,
>>>
>>>
>>> It seems that between Mono 4.2 and 4.6, Mono stopped building properly on little-endian 32-bit MIPS.
>>>
>>>
>>> https://buildd.debian.org/status/fetch.php?pkg=mono&arch=mipsel&ver=4.6.1.3%2Bdfsg-2&stamp=1475869442
>>
>> I have just got a quick look at the code triggering the assert:
>>
>> | case OP_LMUL:
>> | case OP_LDIV:
>> | case OP_LDIV_UN:
>> | case OP_LREM:
>> | case OP_LREM_UN:
>> | case OP_LSHL:
>> | case OP_LSHR:
>> | case OP_LSHR_UN:
>> | mono_print_ins (ins);
>> | g_assert_not_reached ();
>>
>> For what I understand, it means that one of the above "internal
>> intermediate instruction" (sorry don't know the mono name for that) has
>> been emitted, and is not yet implemented for the MIPS backend.
>>
>> Could you confirm? If it is the case and the only problem, that should
>> be relatively easy to implement. I'll give a try in the next days.
>
> These opcode concerns 64-bit long values. It's actually normal they are
> not implemented for 32-bit MIPS. Could it be that they are listed
> incorrectly in cpu-mips.md, probably in prevision of the 64-bit MIPS
> support?
>
> Aurelien
>
> --
> Aurelien Jarno GPG: 4096R/1DDD8C9B
> aurelien@aurel32.net http://www.aurel32.net
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