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code cleanup

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This commit is contained in:
Folkert 2020-12-03 15:24:15 +01:00
parent 0a8415b48e
commit 4829368ca8
1 changed files with 118 additions and 100 deletions
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200
compiler/gen/src/llvm/build_list.rs
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@ -1318,6 +1318,85 @@ pub fn list_keep_if_help<'a, 'ctx, 'env>(
}
}
/// List.map : List before, (before -> after) -> List after
macro_rules! list_map_help {
($env:expr, $layout_ids:expr, $inplace:expr, $parent:expr, $func:expr, $func_layout:expr, $list:expr, $list_layout:expr, $function_ptr:expr, $function_return_layout: expr, $closure_info:expr) => {{
let layout_ids = $layout_ids;
let inplace = $inplace;
let parent = $parent;
let func = $func;
let func_layout = $func_layout;
let list = $list;
let list_layout = $list_layout;
let function_ptr = $function_ptr;
let function_return_layout = $function_return_layout;
let closure_info : Option<(&Layout, BasicValueEnum)> = $closure_info;
let non_empty_fn = |elem_layout: &Layout<'a>,
len: IntValue<'ctx>,
list_wrapper: StructValue<'ctx>| {
let ctx = $env.context;
let builder = $env.builder;
let ret_list_ptr = allocate_list($env, inplace, function_return_layout, len);
let elem_type = basic_type_from_layout($env.arena, ctx, elem_layout, $env.ptr_bytes);
let ptr_type = get_ptr_type(&elem_type, AddressSpace::Generic);
let list_ptr = load_list_ptr(builder, list_wrapper, ptr_type);
let list_loop = |index, before_elem| {
increment_refcount_layout($env, parent, layout_ids, before_elem, elem_layout);
let arguments = match closure_info {
Some((closure_data_layout, closure_data)) => {
increment_refcount_layout( $env, parent, layout_ids, closure_data, closure_data_layout);
bumpalo::vec![in $env.arena; before_elem, closure_data]
}
None => bumpalo::vec![in $env.arena; before_elem],
};
let call_site_value = builder.build_call(function_ptr, &arguments, "map_func");
// set the calling convention explicitly for this call
call_site_value.set_call_convention(crate::llvm::build::FAST_CALL_CONV);
let after_elem = call_site_value
.try_as_basic_value()
.left()
.unwrap_or_else(|| panic!("LLVM error: Invalid call by pointer."));
// The pointer to the element in the mapped-over list
let after_elem_ptr = unsafe {
builder.build_in_bounds_gep(ret_list_ptr, &[index], "load_index_after_list")
};
// Mutate the new array in-place to change the element.
builder.build_store(after_elem_ptr, after_elem);
};
incrementing_elem_loop(builder, ctx, parent, list_ptr, len, "#index", list_loop);
let result = store_list($env, ret_list_ptr, len);
// decrement the input list and function (if it's a closure)
decrement_refcount_layout($env, parent, layout_ids, list, list_layout);
decrement_refcount_layout($env, parent, layout_ids, func, func_layout);
if let Some((closure_data_layout, closure_data)) = closure_info {
decrement_refcount_layout( $env, parent, layout_ids, closure_data, closure_data_layout);
}
result
};
if_list_is_not_empty($env, parent, non_empty_fn, list, list_layout, "List.map")
}};
}
/// List.map : List before, (before -> after) -> List after
#[allow(clippy::too_many_arguments)]
pub fn list_map<'a, 'ctx, 'env>(
@ -1332,57 +1411,24 @@ pub fn list_map<'a, 'ctx, 'env>(
) -> BasicValueEnum<'ctx> {
match (func, func_layout) {
(BasicValueEnum::PointerValue(func_ptr), Layout::FunctionPointer(_, ret_elem_layout)) => {
let non_empty_fn = |elem_layout: &Layout<'a>,
len: IntValue<'ctx>,
list_wrapper: StructValue<'ctx>| {
let ctx = env.context;
let builder = env.builder;
let ret_list_ptr = allocate_list(env, inplace, ret_elem_layout, len);
let elem_type = basic_type_from_layout(env.arena, ctx, elem_layout, env.ptr_bytes);
let ptr_type = get_ptr_type(&elem_type, AddressSpace::Generic);
let list_ptr = load_list_ptr(builder, list_wrapper, ptr_type);
let list_loop = |index, before_elem| {
let call_site_value =
builder.build_call(func_ptr, env.arena.alloc([before_elem]), "map_func");
// set the calling convention explicitly for this call
call_site_value.set_call_convention(crate::llvm::build::FAST_CALL_CONV);
let after_elem = call_site_value
.try_as_basic_value()
.left()
.unwrap_or_else(|| panic!("LLVM error: Invalid call by pointer."));
// The pointer to the element in the mapped-over list
let after_elem_ptr = unsafe {
builder.build_in_bounds_gep(ret_list_ptr, &[index], "load_index_after_list")
};
// Mutate the new array in-place to change the element.
builder.build_store(after_elem_ptr, after_elem);
};
incrementing_elem_loop(builder, ctx, parent, list_ptr, len, "#index", list_loop);
let result = store_list(env, ret_list_ptr, len);
// decrement the input list (the function is a function pointer, and is never refcounted)
decrement_refcount_layout(env, parent, layout_ids, list, list_layout);
result
};
if_list_is_not_empty(env, parent, non_empty_fn, list, list_layout, "List.map")
list_map_help!(
env,
layout_ids,
inplace,
parent,
func,
func_layout,
list,
list_layout,
func_ptr,
ret_elem_layout,
None
)
}
(BasicValueEnum::StructValue(ptr_and_data), Layout::Closure(_, _, ret_elem_layout)) => {
let non_empty_fn = |elem_layout: &Layout<'a>,
len: IntValue<'ctx>,
list_wrapper: StructValue<'ctx>| {
let ctx = env.context;
(
BasicValueEnum::StructValue(ptr_and_data),
Layout::Closure(_, closure_layout, ret_elem_layout),
) => {
let builder = env.builder;
let func_ptr = builder
@ -1394,49 +1440,21 @@ pub fn list_map<'a, 'ctx, 'env>(
.build_extract_value(ptr_and_data, 1, "closure_data")
.unwrap();
let ret_list_ptr = allocate_list(env, inplace, ret_elem_layout, len);
let closure_data_layout = closure_layout.as_block_of_memory_layout();
let elem_type = basic_type_from_layout(env.arena, ctx, elem_layout, env.ptr_bytes);
let ptr_type = get_ptr_type(&elem_type, AddressSpace::Generic);
let list_ptr = load_list_ptr(builder, list_wrapper, ptr_type);
let list_loop = |index, before_elem| {
let call_site_value = builder.build_call(
list_map_help!(
env,
layout_ids,
inplace,
parent,
func,
func_layout,
list,
list_layout,
func_ptr,
env.arena.alloc([before_elem, closure_data]),
"map_func",
);
// set the calling convention explicitly for this call
call_site_value.set_call_convention(crate::llvm::build::FAST_CALL_CONV);
let after_elem = call_site_value
.try_as_basic_value()
.left()
.unwrap_or_else(|| panic!("LLVM error: Invalid call by pointer."));
// The pointer to the element in the mapped-over list
let after_elem_ptr = unsafe {
builder.build_in_bounds_gep(ret_list_ptr, &[index], "load_index_after_list")
};
// Mutate the new array in-place to change the element.
builder.build_store(after_elem_ptr, after_elem);
};
incrementing_elem_loop(builder, ctx, parent, list_ptr, len, "#index", list_loop);
let result = store_list(env, ret_list_ptr, len);
// decrement the input list and input closure
decrement_refcount_layout(env, parent, layout_ids, list, list_layout);
decrement_refcount_layout(env, parent, layout_ids, func, func_layout);
result
};
if_list_is_not_empty(env, parent, non_empty_fn, list, list_layout, "List.map")
ret_elem_layout,
Some((&closure_data_layout, closure_data))
)
}
_ => {
unreachable!(