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

Daniel Dunbar daniel at zuster.org
Fri Nov 30 12:16:11 PST 2012

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

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.


 - Daniel
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