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core: Extract codegen portion of gen_*op_expr

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This allows *ops to be generated internally using LLVM values as
input. Required in a future change.
This commit is contained in:
David Mak 2024-03-11 15:09:33 +08:00
parent 5ba8601b39
commit 9a98cde595
1 changed files with 256 additions and 147 deletions
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403
nac3core/src/codegen/expr.rs
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@ -1090,34 +1090,22 @@ pub fn gen_comprehension<'ctx, G: CodeGenerator>(
Ok(Some(list.as_ptr_value().into()))
}
/// Generates LLVM IR for a [binary operator expression][expr].
///
/// * `left` - The left-hand side of the binary operator.
/// * `op` - The operator applied on the operands.
/// * `right` - The right-hand side of the binary operator.
/// * `loc` - The location of the full expression.
/// * `is_aug_assign` - Whether the binary operator expression is also an assignment operator.
pub fn gen_binop_expr<'ctx, G: CodeGenerator>(
/// Generates LLVM IR for a binary operator expression using the [`Type`] and
/// [LLVM value][`BasicValueEnum`] of the operands.
pub fn gen_binop_expr_with_values<'ctx, G: CodeGenerator>(
generator: &mut G,
ctx: &mut CodeGenContext<'ctx, '_>,
left: &Expr<Option<Type>>,
left: (&Option<Type>, BasicValueEnum<'ctx>),
op: &Operator,
right: &Expr<Option<Type>>,
right: (&Option<Type>, BasicValueEnum<'ctx>),
loc: Location,
is_aug_assign: bool,
) -> Result<Option<ValueEnum<'ctx>>, String> {
let ty1 = ctx.unifier.get_representative(left.custom.unwrap());
let ty2 = ctx.unifier.get_representative(right.custom.unwrap());
let left_val = if let Some(v) = generator.gen_expr(ctx, left)? {
v.to_basic_value_enum(ctx, generator, left.custom.unwrap())?
} else {
return Ok(None)
};
let right_val = if let Some(v) = generator.gen_expr(ctx, right)? {
v.to_basic_value_enum(ctx, generator, right.custom.unwrap())?
} else {
return Ok(None)
};
let (left_ty, left_val) = left;
let (right_ty, right_val) = right;
let ty1 = ctx.unifier.get_representative(left_ty.unwrap());
let ty2 = ctx.unifier.get_representative(right_ty.unwrap());
// we can directly compare the types, because we've got their representatives
// which would be unchanged until further unification, which we would never do
@ -1142,7 +1130,7 @@ pub fn gen_binop_expr<'ctx, G: CodeGenerator>(
);
Ok(Some(res.into()))
} else {
let left_ty_enum = ctx.unifier.get_ty_immutable(left.custom.unwrap());
let left_ty_enum = ctx.unifier.get_ty_immutable(left_ty.unwrap());
let TypeEnum::TObj { fields, obj_id, .. } = left_ty_enum.as_ref() else {
unreachable!("must be tobj")
};
@ -1162,7 +1150,7 @@ pub fn gen_binop_expr<'ctx, G: CodeGenerator>(
let signature = if let Some(call) = ctx.calls.get(&loc.into()) {
ctx.unifier.get_call_signature(*call).unwrap()
} else {
let left_enum_ty = ctx.unifier.get_ty_immutable(left.custom.unwrap());
let left_enum_ty = ctx.unifier.get_ty_immutable(left_ty.unwrap());
let TypeEnum::TObj { fields, .. } = left_enum_ty.as_ref() else {
unreachable!("must be tobj")
};
@ -1187,13 +1175,254 @@ pub fn gen_binop_expr<'ctx, G: CodeGenerator>(
generator
.gen_call(
ctx,
Some((left.custom.unwrap(), left_val.into())),
Some((left_ty.unwrap(), left_val.into())),
(&signature, fun_id),
vec![(None, right_val.into())],
).map(|f| f.map(Into::into))
}
}
/// Generates LLVM IR for a binary operator expression.
///
/// * `left` - The left-hand side of the binary operator.
/// * `op` - The operator applied on the operands.
/// * `right` - The right-hand side of the binary operator.
/// * `loc` - The location of the full expression.
/// * `is_aug_assign` - Whether the binary operator expression is also an assignment operator.
pub fn gen_binop_expr<'ctx, G: CodeGenerator>(
generator: &mut G,
ctx: &mut CodeGenContext<'ctx, '_>,
left: &Expr<Option<Type>>,
op: &Operator,
right: &Expr<Option<Type>>,
loc: Location,
is_aug_assign: bool,
) -> Result<Option<ValueEnum<'ctx>>, String> {
let left_val = if let Some(v) = generator.gen_expr(ctx, left)? {
v.to_basic_value_enum(ctx, generator, left.custom.unwrap())?
} else {
return Ok(None)
};
let right_val = if let Some(v) = generator.gen_expr(ctx, right)? {
v.to_basic_value_enum(ctx, generator, right.custom.unwrap())?
} else {
return Ok(None)
};
gen_binop_expr_with_values(
generator,
ctx,
(&left.custom, left_val),
op,
(&right.custom, right_val),
loc,
is_aug_assign,
)
}
/// Generates LLVM IR for a unary operator expression using the [`Type`] and
/// [LLVM value][`BasicValueEnum`] of the operands.
pub fn gen_unaryop_expr_with_values<'ctx, G: CodeGenerator>(
_generator: &mut G,
ctx: &mut CodeGenContext<'ctx, '_>,
op: &ast::Unaryop,
operand: (&Option<Type>, BasicValueEnum<'ctx>),
) -> Result<Option<ValueEnum<'ctx>>, String> {
let (ty, val) = operand;
let ty = ctx.unifier.get_representative(ty.unwrap());
Ok(Some(if ty == ctx.primitives.bool {
let val = val.into_int_value();
match op {
ast::Unaryop::Invert | ast::Unaryop::Not => {
ctx.builder.build_not(val, "not").map(Into::into).unwrap()
}
_ => val.into(),
}
} else if [ctx.primitives.int32, ctx.primitives.int64, ctx.primitives.uint32, ctx.primitives.uint64].contains(&ty) {
let val = val.into_int_value();
match op {
ast::Unaryop::USub => ctx.builder.build_int_neg(val, "neg").map(Into::into).unwrap(),
ast::Unaryop::Invert => ctx.builder.build_not(val, "not").map(Into::into).unwrap(),
ast::Unaryop::Not => ctx.builder.build_xor(val, val.get_type().const_all_ones(), "not").map(Into::into).unwrap(),
ast::Unaryop::UAdd => val.into(),
}
} else if ty == ctx.primitives.float {
let val = val.into_float_value();
match op {
ast::Unaryop::USub => ctx.builder.build_float_neg(val, "neg").map(Into::into).unwrap(),
ast::Unaryop::Not => ctx
.builder
.build_float_compare(
inkwell::FloatPredicate::OEQ,
val,
val.get_type().const_zero(),
"not",
)
.map(Into::into)
.unwrap(),
_ => val.into(),
}
} else {
unimplemented!()
}))
}
/// Generates LLVM IR for a unary operator expression.
///
/// * `op` - The operator applied on the operand.
/// * `operand` - The unary operand.
pub fn gen_unaryop_expr<'ctx, G: CodeGenerator>(
generator: &mut G,
ctx: &mut CodeGenContext<'ctx, '_>,
op: &ast::Unaryop,
operand: &Expr<Option<Type>>,
) -> Result<Option<ValueEnum<'ctx>>, String> {
let val = if let Some(v) = generator.gen_expr(ctx, operand)? {
v.to_basic_value_enum(ctx, generator, operand.custom.unwrap())?
} else {
return Ok(None)
};
gen_unaryop_expr_with_values(generator, ctx, op, (&operand.custom, val))
}
/// Generates LLVM IR for a comparison operator expression using the [`Type`] and
/// [LLVM value][`BasicValueEnum`] of the operands.
pub fn gen_cmpop_expr_with_values<'ctx, G: CodeGenerator>(
_generator: &mut G,
ctx: &mut CodeGenContext<'ctx, '_>,
left: (Option<Type>, BasicValueEnum<'ctx>),
ops: &[ast::Cmpop],
comparators: &[(Option<Type>, BasicValueEnum<'ctx>)],
) -> Result<Option<ValueEnum<'ctx>>, String> {
let cmp_val = izip!(chain(once(&left), comparators.iter()), comparators.iter(), ops.iter(),)
.fold(Ok(None), |prev: Result<Option<_>, String>, (lhs, rhs, op)| {
let (left_ty, lhs) = lhs;
let (right_ty, rhs) = rhs;
let left_ty = ctx.unifier.get_representative(left_ty.unwrap());
let right_ty = ctx.unifier.get_representative(right_ty.unwrap());
let current =
if [ctx.primitives.int32, ctx.primitives.int64, ctx.primitives.uint32, ctx.primitives.uint64, ctx.primitives.bool]
.contains(&left_ty)
{
assert!(ctx.unifier.unioned(left_ty, right_ty));
let use_unsigned_ops = [
ctx.primitives.uint32,
ctx.primitives.uint64,
].contains(&left_ty);
let lhs = lhs.into_int_value();
let rhs = rhs.into_int_value();
let op = match op {
ast::Cmpop::Eq | ast::Cmpop::Is => IntPredicate::EQ,
ast::Cmpop::NotEq => IntPredicate::NE,
_ if left_ty == ctx.primitives.bool => unreachable!(),
ast::Cmpop::Lt => if use_unsigned_ops {
IntPredicate::ULT
} else {
IntPredicate::SLT
},
ast::Cmpop::LtE => if use_unsigned_ops {
IntPredicate::ULE
} else {
IntPredicate::SLE
},
ast::Cmpop::Gt => if use_unsigned_ops {
IntPredicate::UGT
} else {
IntPredicate::SGT
},
ast::Cmpop::GtE => if use_unsigned_ops {
IntPredicate::UGE
} else {
IntPredicate::SGE
},
_ => unreachable!(),
};
ctx.builder.build_int_compare(op, lhs, rhs, "cmp").unwrap()
} else if left_ty == ctx.primitives.float {
assert!(ctx.unifier.unioned(left_ty, right_ty));
let lhs = lhs.into_float_value();
let rhs = rhs.into_float_value();
let op = match op {
ast::Cmpop::Eq | ast::Cmpop::Is => inkwell::FloatPredicate::OEQ,
ast::Cmpop::NotEq => inkwell::FloatPredicate::ONE,
ast::Cmpop::Lt => inkwell::FloatPredicate::OLT,
ast::Cmpop::LtE => inkwell::FloatPredicate::OLE,
ast::Cmpop::Gt => inkwell::FloatPredicate::OGT,
ast::Cmpop::GtE => inkwell::FloatPredicate::OGE,
_ => unreachable!(),
};
ctx.builder.build_float_compare(op, lhs, rhs, "cmp").unwrap()
} else {
unimplemented!()
};
Ok(prev?.map(|v| ctx.builder.build_and(v, current, "cmp").unwrap()).or(Some(current)))
})?;
Ok(Some(match cmp_val {
Some(v) => v.into(),
None => return Ok(None),
}))
}
/// Generates LLVM IR for a comparison operator expression.
///
/// * `left` - The left-hand side of the comparison operator.
/// * `ops` - The (possibly chained) operators applied on the operands.
/// * `comparators` - The right-hand side of the binary operator.
pub fn gen_cmpop_expr<'ctx, G: CodeGenerator>(
generator: &mut G,
ctx: &mut CodeGenContext<'ctx, '_>,
left: &Expr<Option<Type>>,
ops: &[ast::Cmpop],
comparators: &[Expr<Option<Type>>],
) -> Result<Option<ValueEnum<'ctx>>, String> {
let left_val = if let Some(v) = generator.gen_expr(ctx, left)? {
v.to_basic_value_enum(ctx, generator, left.custom.unwrap())?
} else {
return Ok(None)
};
let comparator_vals = comparators.iter()
.map(|cmptor| {
Ok(if let Some(v) = generator.gen_expr(ctx, cmptor)? {
Some((cmptor.custom, v.to_basic_value_enum(ctx, generator, cmptor.custom.unwrap())?))
} else {
None
})
})
.take_while(|v| if let Ok(v) = v {
v.is_some()
} else {
true
})
.collect::<Result<Vec<_>, String>>()?;
let comparator_vals = if comparator_vals.len() == comparators.len() {
comparator_vals
.into_iter()
.map(Option::unwrap)
.collect_vec()
} else {
return Ok(None)
};
gen_cmpop_expr_with_values(
generator,
ctx,
(left.custom, left_val),
ops,
comparator_vals.as_slice(),
)
}
/// Generates code for a subscript expression on an `ndarray`.
///
/// * `ty` - The `Type` of the `NDArray` elements.
@ -1570,130 +1799,10 @@ pub fn gen_expr<'ctx, G: CodeGenerator>(
return gen_binop_expr(generator, ctx, left, op, right, expr.location, false);
}
ExprKind::UnaryOp { op, operand } => {
let ty = ctx.unifier.get_representative(operand.custom.unwrap());
let val = if let Some(v) = generator.gen_expr(ctx, operand)? {
v.to_basic_value_enum(ctx, generator, operand.custom.unwrap())?
} else {
return Ok(None)
};
if ty == ctx.primitives.bool {
let val = val.into_int_value();
match op {
ast::Unaryop::Invert | ast::Unaryop::Not => {
ctx.builder.build_not(val, "not").map(Into::into).unwrap()
}
_ => val.into(),
}
} else if [ctx.primitives.int32, ctx.primitives.int64, ctx.primitives.uint32, ctx.primitives.uint64].contains(&ty) {
let val = val.into_int_value();
match op {
ast::Unaryop::USub => ctx.builder.build_int_neg(val, "neg").map(Into::into).unwrap(),
ast::Unaryop::Invert => ctx.builder.build_not(val, "not").map(Into::into).unwrap(),
ast::Unaryop::Not => ctx.builder.build_xor(val, val.get_type().const_all_ones(), "not").map(Into::into).unwrap(),
ast::Unaryop::UAdd => val.into(),
}
} else if ty == ctx.primitives.float {
let val = val.into_float_value();
match op {
ast::Unaryop::USub => ctx.builder.build_float_neg(val, "neg").map(Into::into).unwrap(),
ast::Unaryop::Not => ctx
.builder
.build_float_compare(
inkwell::FloatPredicate::OEQ,
val,
val.get_type().const_zero(),
"not",
)
.map(Into::into)
.unwrap(),
_ => val.into(),
}
} else {
unimplemented!()
}
return gen_unaryop_expr(generator, ctx, op, operand)
}
ExprKind::Compare { left, ops, comparators } => {
let cmp_val = izip!(chain(once(left.as_ref()), comparators.iter()), comparators.iter(), ops.iter(),)
.fold(Ok(None), |prev: Result<Option<_>, String>, (lhs, rhs, op)| {
let ty = ctx.unifier.get_representative(lhs.custom.unwrap());
let current =
if [ctx.primitives.int32, ctx.primitives.int64, ctx.primitives.uint32, ctx.primitives.uint64, ctx.primitives.bool]
.contains(&ty)
{
let use_unsigned_ops = [
ctx.primitives.uint32,
ctx.primitives.uint64,
].contains(&ty);
let BasicValueEnum::IntValue(lhs) = (match generator.gen_expr(ctx, lhs)? {
Some(v) => v.to_basic_value_enum(ctx, generator, lhs.custom.unwrap())?,
None => return Ok(None),
}) else { unreachable!() };
let BasicValueEnum::IntValue(rhs) = (match generator.gen_expr(ctx, rhs)? {
Some(v) => v.to_basic_value_enum(ctx, generator, rhs.custom.unwrap())?,
None => return Ok(None),
}) else { unreachable!() };
let op = match op {
ast::Cmpop::Eq | ast::Cmpop::Is => IntPredicate::EQ,
ast::Cmpop::NotEq => IntPredicate::NE,
_ if ty == ctx.primitives.bool => unreachable!(),
ast::Cmpop::Lt => if use_unsigned_ops {
IntPredicate::ULT
} else {
IntPredicate::SLT
},
ast::Cmpop::LtE => if use_unsigned_ops {
IntPredicate::ULE
} else {
IntPredicate::SLE
},
ast::Cmpop::Gt => if use_unsigned_ops {
IntPredicate::UGT
} else {
IntPredicate::SGT
},
ast::Cmpop::GtE => if use_unsigned_ops {
IntPredicate::UGE
} else {
IntPredicate::SGE
},
_ => unreachable!(),
};
ctx.builder.build_int_compare(op, lhs, rhs, "cmp").unwrap()
} else if ty == ctx.primitives.float {
let BasicValueEnum::FloatValue(lhs) = (match generator.gen_expr(ctx, lhs)? {
Some(v) => v.to_basic_value_enum(ctx, generator, lhs.custom.unwrap())?,
None => return Ok(None),
}) else { unreachable!() };
let BasicValueEnum::FloatValue(rhs) = (match generator.gen_expr(ctx, rhs)? {
Some(v) => v.to_basic_value_enum(ctx, generator, rhs.custom.unwrap())?,
None => return Ok(None),
}) else { unreachable!() };
let op = match op {
ast::Cmpop::Eq | ast::Cmpop::Is => inkwell::FloatPredicate::OEQ,
ast::Cmpop::NotEq => inkwell::FloatPredicate::ONE,
ast::Cmpop::Lt => inkwell::FloatPredicate::OLT,
ast::Cmpop::LtE => inkwell::FloatPredicate::OLE,
ast::Cmpop::Gt => inkwell::FloatPredicate::OGT,
ast::Cmpop::GtE => inkwell::FloatPredicate::OGE,
_ => unreachable!(),
};
ctx.builder.build_float_compare(op, lhs, rhs, "cmp").unwrap()
} else {
unimplemented!()
};
Ok(prev?.map(|v| ctx.builder.build_and(v, current, "cmp").unwrap()).or(Some(current)))
})?;
match cmp_val {
Some(v) => v.into(),
None => return Ok(None),
}
return gen_cmpop_expr(generator, ctx, left, ops, comparators)
}
ExprKind::IfExp { test, body, orelse } => {
let test = match generator.gen_expr(ctx, test)? {