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core: Add create_fn_by_* functions

Used for abstracting the creation of function from different sources.
This commit is contained in:
David Mak 2023-10-10 14:56:16 +08:00
parent 068f0d9faf
commit 7cf7634985
1 changed files with 184 additions and 2 deletions

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@ -5,7 +5,13 @@ use crate::{
},
symbol_resolver::SymbolValue,
};
use inkwell::{types::BasicType, FloatPredicate, IntPredicate};
use inkwell::{
attributes::{Attribute, AttributeLoc},
types::{BasicType, BasicMetadataTypeEnum},
values::BasicMetadataValueEnum,
FloatPredicate,
IntPredicate
};
type BuiltinInfo = (Vec<(Arc<RwLock<TopLevelDef>>, Option<Stmt>)>, &'static [&'static str]);
@ -78,6 +84,182 @@ pub fn get_exn_constructor(
(fun_def, class_def, signature, exn_type)
}
/// Creates a NumPy [TopLevelDef] function by code generation.
///
/// * `name`: The name of the implemented NumPy function.
/// * `ret_ty`: The return type of this function.
/// * `param_ty`: The parameters accepted by this function, represented by a tuple of the
/// [parameter type][Type] and the parameter symbol name.
/// * `codegen_callback`: A lambda generating LLVM IR for the implementation of this function.
fn create_fn_by_codegen(
primitives: &mut (PrimitiveStore, Unifier),
var_map: &HashMap<u32, Type>,
name: &'static str,
ret_ty: Type,
param_ty: &[(Type, &'static str)],
codegen_callback: GenCallCallback,
) -> Arc<RwLock<TopLevelDef>> {
Arc::new(RwLock::new(TopLevelDef::Function {
name: name.into(),
simple_name: name.into(),
signature: primitives.1.add_ty(TypeEnum::TFunc(FunSignature {
args: param_ty.iter().map(|p| FuncArg {
name: p.1.into(),
ty: p.0,
default_value: None,
}).collect(),
ret: ret_ty.clone(),
vars: var_map.clone(),
})),
var_id: Default::default(),
instance_to_symbol: Default::default(),
instance_to_stmt: Default::default(),
resolver: None,
codegen_callback: Some(Arc::new(GenCall::new(codegen_callback))),
loc: None,
}))
}
/// Creates a NumPy [TopLevelDef] function using an LLVM intrinsic.
///
/// * `name`: The name of the implemented NumPy function.
/// * `ret_ty`: The return type of this function.
/// * `param_ty`: The parameters accepted by this function, represented by a tuple of the
/// [parameter type][Type] and the parameter symbol name.
/// * `intrinsic_fn`: The fully-qualified name of the LLVM intrinsic function.
fn create_fn_by_intrinsic(
primitives: &mut (PrimitiveStore, Unifier),
var_map: &HashMap<u32, Type>,
name: &'static str,
ret_ty: Type,
params: &[(Type, &'static str)],
intrinsic_fn: &'static str,
) -> Arc<RwLock<TopLevelDef>> {
let param_tys = params.iter()
.map(|p| p.0)
.collect_vec();
create_fn_by_codegen(
primitives,
var_map,
name,
ret_ty,
params,
Box::new(move |ctx, _, fun, args, generator| {
let args_ty = fun.0.args.iter().map(|a| a.ty).collect_vec();
assert!(param_tys.iter().zip(&args_ty)
.all(|(expected, actual)| ctx.unifier.unioned(*expected, *actual)));
let args_val = args_ty.iter().zip_eq(args.iter())
.map(|(ty, arg)| {
arg.1.clone()
.to_basic_value_enum(ctx, generator, ty.clone())
.unwrap()
})
.map_into::<BasicMetadataValueEnum>()
.collect_vec();
let intrinsic_fn = ctx.module.get_function(intrinsic_fn).unwrap_or_else(|| {
let ret_llvm_ty = ctx.get_llvm_abi_type(generator, ret_ty.clone());
let param_llvm_ty = param_tys.iter()
.map(|p| ctx.get_llvm_abi_type(generator, *p))
.map_into::<BasicMetadataTypeEnum>()
.collect_vec();
let fn_type = ret_llvm_ty.fn_type(param_llvm_ty.as_slice(), false);
ctx.module.add_function(intrinsic_fn, fn_type, None)
});
let call = ctx.builder
.build_call(intrinsic_fn, args_val.as_slice(), name);
let val = call.try_as_basic_value()
.left()
.unwrap();
Ok(val.into())
}),
)
}
/// Creates a unary NumPy [TopLevelDef] function using an extern function (e.g. from `libc` or
/// `libm`).
///
/// * `name`: The name of the implemented NumPy function.
/// * `ret_ty`: The return type of this function.
/// * `param_ty`: The parameters accepted by this function, represented by a tuple of the
/// [parameter type][Type] and the parameter symbol name.
/// * `extern_fn`: The fully-qualified name of the extern function used as the implementation.
/// * `attrs`: The list of attributes to apply to this function declaration. Note that `nounwind` is
/// already implied by the C ABI.
fn create_fn_by_extern(
primitives: &mut (PrimitiveStore, Unifier),
var_map: &HashMap<u32, Type>,
name: &'static str,
ret_ty: Type,
params: &[(Type, &'static str)],
extern_fn: &'static str,
attrs: &'static [&str],
) -> Arc<RwLock<TopLevelDef>> {
let param_tys = params.iter()
.map(|p| p.0)
.collect_vec();
create_fn_by_codegen(
primitives,
var_map,
name,
ret_ty,
params,
Box::new(move |ctx, _, fun, args, generator| {
let args_ty = fun.0.args.iter().map(|a| a.ty).collect_vec();
assert!(param_tys.iter().zip(&args_ty)
.all(|(expected, actual)| ctx.unifier.unioned(*expected, *actual)));
let args_val = args_ty.iter().zip_eq(args.iter())
.map(|(ty, arg)| {
arg.1.clone()
.to_basic_value_enum(ctx, generator, ty.clone())
.unwrap()
})
.map_into::<BasicMetadataValueEnum>()
.collect_vec();
let intrinsic_fn = ctx.module.get_function(extern_fn).unwrap_or_else(|| {
let ret_llvm_ty = ctx.get_llvm_abi_type(generator, ret_ty.clone());
let param_llvm_ty = param_tys.iter()
.map(|p| ctx.get_llvm_abi_type(generator, *p))
.map_into::<BasicMetadataTypeEnum>()
.collect_vec();
let fn_type = ret_llvm_ty.fn_type(param_llvm_ty.as_slice(), false);
let func = ctx.module.add_function(extern_fn, fn_type, None);
func.add_attribute(
AttributeLoc::Function,
ctx.ctx.create_enum_attribute(Attribute::get_named_enum_kind_id("nounwind"), 0)
);
for attr in attrs {
func.add_attribute(
AttributeLoc::Function,
ctx.ctx.create_enum_attribute(Attribute::get_named_enum_kind_id(attr), 0)
);
}
func
});
let call = ctx.builder
.build_call(intrinsic_fn, &args_val, name);
let val = call.try_as_basic_value()
.left()
.unwrap();
Ok(val.into())
}),
)
}
pub fn get_builtins(primitives: &mut (PrimitiveStore, Unifier)) -> BuiltinInfo {
let int32 = primitives.0.int32;
let int64 = primitives.0.int64;
@ -981,7 +1163,7 @@ pub fn get_builtins(primitives: &mut (PrimitiveStore, Unifier)) -> BuiltinInfo {
signature: primitives.1.add_ty(TypeEnum::TFunc(FunSignature {
args: vec![FuncArg { name: "n".into(), ty: num_ty.0, default_value: None }],
ret: num_ty.0,
vars: var_map,
vars: var_map.clone(),
})),
var_id: Default::default(),
instance_to_symbol: Default::default(),