Comprehensive AOT Test Suite

[shoaibkamil]

Continuing discussion from #5040, Halide should have an AOT test suite for testing on devices/environments that don't support JIT. This could be a subset of the existing tests that use JIT compilation.

[shoaibkamil]

To make it easier to run on iOS and Android-style devices, I additionally propose this suite should have a single executable entrypoint; that makes it so that we just have to launch one executable, rather than one per test.

[steven-johnson]

single executable entrypoint

This is an idea worth exploring, but with our current runtime setup it may be impractical or impossible, since some tests require custom runtime overrides, and the weak-linkage-replacement approach we have now makes that hard to do. (It also might make turnaround time unpleasant.)

[shoaibkamil]

I think it'll be impossible if we try to do it for all tests, but I believe there's a large subset for which a single executable would help. I'm going to explore some possibilities and report back.

[shoaibkamil]

It looks like it wouldn't actually be that necessary to have a single executable, as running via command line on a connected device is fast enough.