This commit adds a new builder on CI for running tests in Intel's own emulator
and also adds an assertion that on this emulator no tests are skipped due to
missing CPU features by accident.
Closes#92
The i586 targets on x86 are defined to be 32-bit and lacking in sse/sse2 unlike
the i686 target which has sse2 turned on by default. I was mostly curious what
would happen when turning on this target, and it turns out quite a few tests
failed!
Most of the tests here had to do with calling functions with ABI mismatches
where the callee wasn't `#[inline(always)]`. Various pieces have been updated
now and we should be passing all tests.
Only one instruction assertion ended up changing where the function generates a
different instruction with sse2 ambiently enabled and without it enabled.
This commit adds CI for a few more targets:
* i686-unknown-linux-gnu
* arm-unknown-linux-gnueabihf
* armv7-unknown-linux-gnueabihf
* aarch64-unknown-linux-gnu
The CI here is structured around using a Docker container to set up a test
environment and then QEMU is used to actually execute code from these platforms.
QEMU's emulation actually makes it so we can continue to just use `cargo test`,
as processes can be spawned from QEMU like `objdump` and files can be read (for
libbacktrace). Ends up being a relatively seamless experience!
Note that a number of intrinsics were disabled on i686 because they were failing
tests, and otherwise a few ARM touch-ups were made to get tests passing.
