* Remove reserved_reg functionality.
This wasn't implemented, and if we need it in the future, it seems like
it would be better to extend the concept of global values to cover this.
* Use GlobalValue::reserved_value() for sentinal values.
* Adds decoration to the verifier errors.
example:
function %bad(i32) fast {
ebb0(v0: i32):
brnz.i32 v0, ebb1
return
^~~~~~
verifier inst1: Internal return not allowed with return_at_end=1
ebb1:
trapz.i32 v0, user6
return
}
Fixes#68
* Making it so that pretty_function_error and write_function_plain are both private.
* Changes write_ebb to decorate_ebb.
Adds documentation line to decorate_function.
* Removing Cargo.toml lib/serde addition
* Add serde functionality into lib.
* Fix so code is compatible with Rust version 1.25.0.
* Move ser/de functions to utility file, update description, remove borrow from arms.
* Remove commented out code.
* Added initial Rust codegen-meta implementation.
* Replace 'Cretonne' in comments.
* Prevent iterator overflow.
* 1.25.0 compatibility changes.
* Implemented debug traits for type variants.
* Added consistent comments.
* Cleaned up a loop via clippy fix.
* Added new license to codegen-meta Cargo.toml
* Edited lane type iterator `next` method.
* Removed functions that are not needed in Rust, and edited desc.
* Debug trait derived for valuetype.
* Added comments for iterator types in the base types submodule.
* Numbering is now handled in the cdsl/types.rs file.
* Moved type number logic into cdsl/types.
* Repeating the lane change cleanup.
* Removed codegen-meta crate from codegen deps.
* Typo fix.
* Addressing a patch note.
* Addressing patch note.
* Lowercase in vector names.
* Fixing a comment bug.
* Added a copy of the license file.
* Formatting changes.
* Cleaned up the vector type numbering.
* 1.25 compatibility.
* Fixed pattern match arms.
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