std.zig.ast: extract out Node.LabeledBlock from Node.Block
This is part of an ongoing effort to reduce size of in-memory AST. This
enum flattening pattern is widespread throughout the self-hosted
compiler.
This is a API breaking change for consumers of the self-hosted parser.
9a5a1013a8Andrew Kelley committed on 8/15/2020, 2:50:00 AMparentc12a262