6360652e9f
A reland but not an exact copy as `VRegInfo.Flags` from the parser is now an int8 instead of a vector; so only need to copy over the value.
This directory contains tests for the MIR file format parser and printer. It was necessary to split the tests across different targets as no single target covers all features available in machine IR. Tests for codegen passes should NOT be here but in test/CodeGen/sometarget. As a rule of thumb this directory should only contain tests using 'llc -run-pass none'.