luaur-code-gen 0.1.0

Native (A64/X64) code generation for Luau (Rust).
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51

use crate::enums::ir_cmd::IrCmd;
use crate::records::ir_op::IrOp;
use crate::records::register_a_64::RegisterA64;
use crate::records::register_x_64::RegisterX64;
use crate::type_aliases::ir_ops::IrOps;

#[derive(Debug, Clone)]
#[repr(C)]
// Public in the C++ `IrInst`; exposed so the cross-crate test harness (and the
// pub `apply_substitutions`/`IrFunction::instructions` that already reference it)
// can name it.
pub struct IrInst {
    pub cmd: IrCmd,
    pub ops: IrOps,
    pub last_use: u32,
    pub use_count: u16,
    pub reg_x64: RegisterX64,
    pub reg_a64: RegisterA64,
    pub reused_reg: bool,
    pub spilled: bool,
    pub needs_reload: bool,
}

impl IrInst {
    /// Construct an `IrInst` from a command and an operand list, mirroring the
    /// C++ aggregate initialization `IrInst{cmd, {ops...}}`. Used by the test
    /// fixture's `checkEq` to build the expected instruction for comparison.
    pub fn ir_inst_new(cmd: IrCmd, ops: &[IrOp]) -> Self {
        Self {
            cmd,
            ops: ops.iter().cloned().collect(),
            ..Self::default()
        }
    }
}

impl Default for IrInst {
    fn default() -> Self {
        Self {
            cmd: IrCmd::NOP,
            ops: IrOps::new(),
            last_use: 0,
            use_count: 0,
            reg_x64: RegisterX64::noreg,
            reg_a64: RegisterA64::noreg,
            reused_reg: false,
            spilled: false,
            needs_reload: false,
        }
    }
}