[LLVMdev] Newbee question: LLVM backend regression tests for thumb1 targets on simulator possible?

Renato Golin renato.golin at linaro.org
Fri Dec 19 02:00:36 PST 2014


On 18 December 2014 at 04:02, Tim Northover <t.p.northover at gmail.com> wrote:
>> You have some special version of qemu? My default distribution's qemu
>> package did not have a cortex-M0 nor has qemu head freshly taken from git:
>
> The trouble with Cortex-M0 (from a virtualised testing perspective) is
> that it doesn't have an MMU, so any "real" operating system
> environment will be far more artificial than we'd like, and probably
> very low down on qemu's list of priorities to boot.
>
> Testing a Thumb1 CPU with an MMU (I'm sure there are ARM11* CPUs with
> MMU but before Thumb2, but would need to dig into which is closest to
> v6m) would cover *most* issues, but obviously not the ways in which
> Cortex-M0 is closer to v7 than v6.

Why not test on real hardware?

https://developer.mbed.org/platforms/DipCortex-M0/

cheers,
--renato



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