[Pkg-rust-maintainers] Bug#881845: Bug#881845: Bug#881845: Bug#881845: Bug#881845: Bug#881845: Bug#881845: Bug#881845: Bug#881845: rustc: FTBFS on mips*: test failures

[John Paul Adrian Glaubitz]

Hi!

On 10/19/18 10:56 AM, Dragan Mladjenovic wrote:
> @YunQiang Su <mailto:wzssyqa at gmail.com> Are you referring to failures shown in [1] ?
> 
> 
> If so, here is the overview : 
> 
>>test [ui] ui/asm-out-assign-imm.rs
>>test [ui] ui/target-feature-gate.rs
>>test [ui] ui/target-feature-wrong.rs
> 
> Fix:[2]. Should be ignored. <https://github.com/rust-lang/rust/commit/f985e6cfd42ee5ef8e7613d11a002253ab87c52f>
> 
>>test [run-pass] run-pass/invalid_const_promotion.rs
> 
> Needs SIGTRAP added to the list at [3]. <https://github.com/rust-lang/rust/blob/master/src/test/run-pass/invalid_const_promotion.rs#L42>
> 
>>test [run-make] run-make-fulldeps/relocation-model
> 
> Bug:[4]. Should be ignored on both mips64 and mips [5]. 

I'll create Debian patches for those.

> Quick comment on the mips. Except of the OOM problems other problems (including the atomics one) on mips are usually 
> 
> caused by its usage of llvm's FastISel in unoptimized builds. You could try disabling it or even try optimized build.
> 
> I believe that for 1.28 we could finish the native bootstrapping in optimized build while unoptimized one would OOM.   
Upstream does that for arm64 as well, see: https://github.com/rust-lang/rust/commit/ea50bf8850304e8afefa9089792fc077fb54aef4

I can try whether the combination of above all gets me a working rustc
on mips*.

Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer - glaubitz at debian.org
`. `'   Freie Universitaet Berlin - glaubitz at physik.fu-berlin.de
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