4480e650b3
The `YAMLParser.h` header file claims support for YAML 1.2 with a few deviations, but our plain scalar parsing failed to parse some valid YAML according to the spec. This change puts us more in compliance with the YAML spec, now letting us parse plain scalars containing additional special characters in cases where they are not ambiguous.
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'.