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Define a Variable struct so that frontends don't have to.

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Frontends can still use their own types with `ILBuilder` and
`FunctionBuilder`. This just provides a basic `Variable` struct
for frontends that want it.
This commit is contained in:
Dan Gohman
2018-03-09 15:01:13 -08:00
parent 56c7d85727
commit 1c72ccfe0a
4 changed files with 61 additions and 75 deletions
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25
lib/frontend/src/lib.rs
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@@ -39,23 +39,8 @@
//! use cretonne::ir::{ExternalName, CallConv, Function, Signature, AbiParam, InstBuilder};
//! use cretonne::ir::types::*;
//! use cretonne::settings;
//! use cton_frontend::{ILBuilder, FunctionBuilder};
//! use cton_frontend::{ILBuilder, FunctionBuilder, Variable};
//! use cretonne::verifier::verify_function;
//! use std::u32;
//!
//! // An opaque reference to variable.
//! #[derive(Copy, Clone, PartialEq, Eq, Debug)]
//! pub struct Variable(u32);
//! impl EntityRef for Variable {
//! fn new(index: usize) -> Self {
//! assert!(index < (u32::MAX as usize));
//! Variable(index as u32)
//! }
//!
//! fn index(self) -> usize {
//! self.0 as usize
//! }
//! }
//!
//! fn main() {
//! let mut sig = Signature::new(CallConv::Native);
@@ -69,9 +54,9 @@
//! let block0 = builder.create_ebb();
//! let block1 = builder.create_ebb();
//! let block2 = builder.create_ebb();
//! let x = Variable(0);
//! let y = Variable(1);
//! let z = Variable(2);
//! let x = Variable::new(0);
//! let y = Variable::new(1);
//! let z = Variable::new(2);
//! builder.declare_var(x, I32);
//! builder.declare_var(y, I32);
//! builder.declare_var(z, I32);
@@ -149,6 +134,8 @@
extern crate cretonne;
pub use frontend::{ILBuilder, FunctionBuilder};
pub use variable::Variable;
mod frontend;
mod ssa;
mod variable;