[LLVMdev] ASAN tests on ARM

[Evgeniy Stepanov]

On Fri, Oct 3, 2014 at 9:18 PM, Renato Golin <renato.golin at linaro.org> wrote:
> On 3 October 2014 15:20, Evgeniy Stepanov <eugenis at google.com> wrote:
>> That's a third option. This flag only really makes sense for one or
>> several test cases in a large GTest file. They can be split and moved
>> to X86. But this adds more complexity to build system which, in my
>> opinion, is never good.
>
> Roger.
>
>
>> Compiler-rt and llvm build systems know very little about cross-compiling.
>
> Well, right now, it doesn't matter how many targets you build LLVM
> for, it'll only run the unit tests on the host platform. It doesn't
> seem to have been designed that way, but it works.
>
> Compiler-rt, OTOH, tries to run AArch64 unit tests, which there's no
> guarantee they'll work on any other platform. There may be something
> missing in its CMake files that is present in the LLVM's?

I guess the only difference is that compiler-rt tests require
execution of target binaries.
There is platform test logic in cmake/config-ix.cmake that tries
compilation (but not execution) for arm and aarch64 on ARM hosts.
Maybe the easiest fix would be to try both on aarch64 host, and only
32-bit arm on 32-bit arm host?


> cheers,
> --renato