[LLVMdev] RFC: Change tests to run with fixed (not-host dependent) triple

[Chris Lattner]

I'm ok with this in principle, but how about with the nuance that some tests (eg test/codegen) explicitly opt into march=native?

-Chris

On Nov 30, 2012, at 12:16 PM, Daniel Dunbar <daniel at zuster.org> wrote:

> Hi all,
> 
> We consistently see test failures arising because by default many of our tests run in a mode where the tool (clang or llc) pick host-dependent behavior. This makes it easy for developers to write tests that pass on their system, but fail for other developers.
> 
> There is some utility in this behavior, as it gives us (unintended) testing coverage of some things, but overall I think it is a net loss for productivity.
> 
> I propose:
> 
> a. We change the test suite to run in such a way that all tools default to an "unknown" host triple.
> 
> b. If someone feels there is missing coverage in some area, we add increased tests for that area (which get run on all platforms).
> 
> c. If there is some reason that running with an "unknown" host triple is undesirable, I propose that we set the default test triple to be "x86_64-pc-linux-gnu", and require deviations to be specified.
> 
> Comments?
> 
>  - Daniel
> 
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