Segment registers are indexed significantly more than they are changed.
Pay the cost of indexing during the set and store rather than the per
register index.
Should be a fairly significant performance improvement for 32-bit
applications. At least on hardware that doesn't have a data dependent
prefetcher.
Breaks Steam atm and isn't clean.
For these unit tests we no longer need to put them in the disabled tests
file. Instead it will be skipped if the host doesn't support the feature
required.
Necessary for tests that depend on the state of the running context.
Since we support an SSE mode and an AVX mode, the FPR store truncate
test will fail on hosts that don't support AVX as the register offsets
are going to be different between the two. So we can conditionally
enable support for these tests.
This allows the generated files to maintain the same folder structure as
how they exist in the source folder.
Resolves the issue that a file in a different folder could potentially
conflict with another in a different folder but have the same name.
This is an easier mental model when pulling unit tests in to a
disassembler for verifying codegen.
Now that everything is punched through that is necessary, we can now
have IR based unit tests that will be used to ensure the IR is working
correctly.
Specifically this is necessary for quick iterating on RA testing.
