ristretto_jit 0.28.0

JVM JIT Compiler
Documentation 
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use crate::Result;
use crate::operand_stack::OperandStack;
use cranelift::frontend::FunctionBuilder;
use cranelift::prelude::{InstBuilder, types};

/// # References
///
/// - [JVMS §6.5.i2l](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.i2l)
pub(crate) fn i2l(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_int(function_builder)?;
    let value = function_builder.ins().sextend(types::I64, value);
    stack.push_long(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.i2f](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.i2f)
pub(crate) fn i2f(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_int(function_builder)?;
    let value = function_builder.ins().fcvt_from_sint(types::F32, value);
    stack.push_float(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.i2d](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.i2d)
pub(crate) fn i2d(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_int(function_builder)?;
    let value = function_builder.ins().fcvt_from_sint(types::F64, value);
    stack.push_double(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.l2i](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.l2i)
pub(crate) fn l2i(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_long(function_builder)?;
    let value = function_builder.ins().ireduce(types::I32, value);
    stack.push_int(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.l2f](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.l2f)
pub(crate) fn l2f(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_long(function_builder)?;
    let value = function_builder.ins().fcvt_from_sint(types::F32, value);
    stack.push_float(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.l2d](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.l2d)
pub(crate) fn l2d(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_long(function_builder)?;
    let value = function_builder.ins().fcvt_from_sint(types::F64, value);
    stack.push_double(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.f2i](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.f2i)
pub(crate) fn f2i(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_float(function_builder)?;
    let value = function_builder.ins().fcvt_to_sint(types::I32, value);
    stack.push_int(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.f2l](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.f2l)
pub(crate) fn f2l(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_float(function_builder)?;
    let value = function_builder.ins().fcvt_to_sint(types::I64, value);
    stack.push_long(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.f2d](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.f2d)
pub(crate) fn f2d(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_float(function_builder)?;
    let value = function_builder.ins().fpromote(types::F64, value);
    stack.push_double(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.d2i](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.d2i)
pub(crate) fn d2i(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_double(function_builder)?;
    let value = function_builder.ins().fcvt_to_sint(types::I32, value);
    stack.push_int(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.d2l](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.d2l)
pub(crate) fn d2l(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_double(function_builder)?;
    let value = function_builder.ins().fcvt_to_sint(types::I64, value);
    stack.push_long(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.d2f](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.d2f)
pub(crate) fn d2f(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_double(function_builder)?;
    let value = function_builder.ins().fdemote(types::F32, value);
    stack.push_float(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.i2b](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.i2b)
pub(crate) fn i2b(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_int(function_builder)?;
    let value = function_builder.ins().ireduce(types::I8, value);
    let value = function_builder.ins().sextend(types::I32, value);
    stack.push_int(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.i2c](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.i2c)
pub(crate) fn i2c(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_int(function_builder)?;
    // TODO: verify i2c unsigned conversion
    let value = function_builder.ins().ireduce(types::I16, value);
    let value = function_builder.ins().sextend(types::I32, value);
    stack.push_int(function_builder, value)?;
    Ok(())
}

/// # References
///
/// - [JVMS §6.5.i2s](https://docs.oracle.com/javase/specs/jvms/se25/html/jvms-6.html#jvms-6.5.i2s)
pub(crate) fn i2s(function_builder: &mut FunctionBuilder, stack: &mut OperandStack) -> Result<()> {
    let value = stack.pop_int(function_builder)?;
    let value = function_builder.ins().ireduce(types::I16, value);
    let value = function_builder.ins().sextend(types::I32, value);
    stack.push_int(function_builder, value)?;
    Ok(())
}