Rust MIR - Intermediate representation language

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Rust MIR, aka Rust Mid-level Intermediate Representation, is an open source intermediate representation language created in 2016.

#1493on PLDB

8Years Old

Download source code:

git clone https://github.com/rust-lang/rust/tree/master/src/librustc_mir

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Tags: intermediate representation language
Early development of Rust MIR happened in https://github.com/rust-lang
Rust MIR compiles to LLVM IR
rust-lang.org was registered in 2010
See also: (1 related languages) SIL
Read more about Rust MIR on the web: 1. 2.
1 PLDB concepts link to Rust MIR: Rust HIR

Example from the web:

// WARNING: This output format is intended for human consumers only
// and is subject to change without notice. Knock yourself out.
fn main() -> () {
    let mut _0: ();                      // return place in scope 0 at src/main.rs:1:11: 1:11
    let mut _1: std::vec::Vec<i32>;      // in scope 0 at src/main.rs:2:9: 2:16
    let _2: ();                          // in scope 0 at src/main.rs:3:5: 3:16
    let mut _3: &mut std::vec::Vec<i32>; // in scope 0 at src/main.rs:3:5: 3:16
    let _4: ();                          // in scope 0 at src/main.rs:4:5: 4:16
    let mut _5: &mut std::vec::Vec<i32>; // in scope 0 at src/main.rs:4:5: 4:16
    scope 1 {
        debug vec => _1;                 // in scope 1 at src/main.rs:2:9: 2:16
    }

    bb0: {
        _1 = Vec::<i32>::new() -> bb1;   // scope 0 at src/main.rs:2:19: 2:29
                                         // mir::Constant
                                         // + span: src/main.rs:2:19: 2:27
                                         // + user_ty: UserType(0)
                                         // + literal: Const { ty: fn() -> Vec<i32> {Vec::<i32>::new}, val: Value(Scalar(<ZST>)) }
    }

    bb1: {
        _3 = &mut _1;                    // scope 1 at src/main.rs:3:5: 3:16
        _2 = Vec::<i32>::push(move _3, const 1_i32) -> [return: bb2, unwind: bb5]; // scope 1 at src/main.rs:3:5: 3:16
                                         // mir::Constant
                                         // + span: src/main.rs:3:9: 3:13
                                         // + literal: Const { ty: for<'r> fn(&'r mut Vec<i32>, i32) {Vec::<i32>::push}, val: Value( Scalar(<ZST>)) }
    }

    bb2: {
        _5 = &mut _1;                    // scope 1 at src/main.rs:4:5: 4:16
        _4 = Vec::<i32>::push(move _5, const 2_i32) -> [return: bb3, unwind: bb5]; // scope 1 at src/main.rs:4:5: 4:16
                                         // mir::Constant
                                         // + span: src/main.rs:4:9: 4:13
                                         // + literal: Const { ty: for<'r> fn(&'r mut Vec<i32>, i32) {Vec::<i32>::push}, val: Value( Scalar(<ZST>)) }
    }

    bb3: {
        drop(_1) -> bb4;                 // scope 0 at src/main.rs:5:1: 5:2
    }

    bb4: {
        return;                          // scope 0 at src/main.rs:5:2: 5:2
    }

    bb5 (cleanup): {
        drop(_1) -> bb6;                 // scope 0 at src/main.rs:5:1: 5:2
    }

    bb6 (cleanup): {
        resume;                          // scope 0 at src/main.rs:1:1: 5:2
    }
}

Language features

Feature	Supported	Example	Token
Comments	✓	// A comment
Line Comments	✓	// A comment	//
Semantic Indentation	X