Added initial Rust codegen-meta implementation.

lib/codegen-meta/Cargo.toml

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+[package]
+name = "cranelift-codegen-meta"
+authors = ["The Cranelift Project Developers"]
+version = "0.15.0"
+description = "Metaprogram for cranelift-codegen code generator library"
+license = "Apache-2.0 WITH LLVM-exception"
+documentation = "https://cranelift.readthedocs.io/"
+repository = "https://github.com/CraneStation/cranelift"
+keywords = ["compile", "compiler", "jit"]
+
+[dependencies]
+# It is a goal of the cranelift-codegen crate to have minimal external dependencies.
+# Please don't add any unless they are essential to the task of creating binary
+# machine code.
+
+[badges]
+maintenance = { status = "experimental" }
+travis-ci = { repository = "CraneStation/cranelift" }

lib/codegen-meta/LICENSE

@@ -0,0 +1,219 @@
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lib/codegen-meta/src/base/mod.rs

@@ -0,0 +1,3 @@
+//! Definitions for the base Cranelift language.
+
+pub mod types;