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Add alignment field to TypeInfo.UnionField and TypeInfo.StructField

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Closes https://github.com/ziglang/zig/issues/6122
This commit is contained in:
Tadeo Kondrak 2020-09-26 08:48:26 -06:00
parent 77df5dae7f
commit d81648ce8c
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GPG Key ID: D41E092CA43F1D8B
3 changed files with 17 additions and 2 deletions
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2
lib/std/builtin.zig
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@ -262,6 +262,7 @@ pub const TypeInfo = union(enum) {
field_type: type,
default_value: anytype,
is_comptime: bool,
alignment: u29,
};
/// This data structure is used by the Zig language code generation and
@ -318,6 +319,7 @@ pub const TypeInfo = union(enum) {
pub const UnionField = struct {
name: []const u8,
field_type: type,
alignment: u29,
};
/// This data structure is used by the Zig language code generation and

1
lib/std/meta/trailer_flags.zig
View File

@ -47,6 +47,7 @@ pub fn TrailerFlags(comptime Fields: type) type {
@as(?struct_field.field_type, null),
),
.is_comptime = false,
.alignment = @alignOf(?struct_field.field_type),
};
}
break :blk @Type(.{

16
src/stage1/ir.cpp
View File

@ -25431,11 +25431,15 @@ static Error ir_make_type_info_value(IrAnalyze *ira, IrInst* source_instr, ZigTy
union_field_val->special = ConstValSpecialStatic;
union_field_val->type = type_info_union_field_type;
ZigValue **inner_fields = alloc_const_vals_ptrs(ira->codegen, 2);
ZigValue **inner_fields = alloc_const_vals_ptrs(ira->codegen, 3);
inner_fields[1]->special = ConstValSpecialStatic;
inner_fields[1]->type = ira->codegen->builtin_types.entry_type;
inner_fields[1]->data.x_type = union_field->type_entry;
inner_fields[2]->special = ConstValSpecialStatic;
inner_fields[2]->type = ira->codegen->builtin_types.entry_u29;
bigint_init_unsigned(&inner_fields[2]->data.x_bigint, union_field->align);
ZigValue *name = create_const_str_lit(ira->codegen, union_field->name)->data.x_ptr.data.ref.pointee;
init_const_slice(ira->codegen, inner_fields[0], name, 0, buf_len(union_field->name), true);
@ -25502,7 +25506,7 @@ static Error ir_make_type_info_value(IrAnalyze *ira, IrInst* source_instr, ZigTy
struct_field_val->special = ConstValSpecialStatic;
struct_field_val->type = type_info_struct_field_type;
ZigValue **inner_fields = alloc_const_vals_ptrs(ira->codegen, 4);
ZigValue **inner_fields = alloc_const_vals_ptrs(ira->codegen, 5);
inner_fields[1]->special = ConstValSpecialStatic;
inner_fields[1]->type = ira->codegen->builtin_types.entry_type;
@ -25522,6 +25526,10 @@ static Error ir_make_type_info_value(IrAnalyze *ira, IrInst* source_instr, ZigTy
inner_fields[3]->type = ira->codegen->builtin_types.entry_bool;
inner_fields[3]->data.x_bool = struct_field->is_comptime;
inner_fields[4]->special = ConstValSpecialStatic;
inner_fields[4]->type = ira->codegen->builtin_types.entry_u29;
bigint_init_unsigned(&inner_fields[4]->data.x_bigint, struct_field->align);
ZigValue *name = create_const_str_lit(ira->codegen, struct_field->name)->data.x_ptr.data.ref.pointee;
init_const_slice(ira->codegen, inner_fields[0], name, 0, buf_len(struct_field->name), true);
@ -26145,6 +26153,8 @@ static ZigType *type_info_to_type(IrAnalyze *ira, IrInst *source_instr, ZigTypeI
}
if ((err = get_const_field_bool(ira, source_instr->source_node, field_value, "is_comptime", 3, &field->is_comptime)))
return ira->codegen->invalid_inst_gen->value->type;
if ((err = get_const_field_u29(ira, source_instr->source_node, field_value, "alignment", 4, &field->align)))
return ira->codegen->invalid_inst_gen->value->type;
}
return entry;
@ -26314,6 +26324,8 @@ static ZigType *type_info_to_type(IrAnalyze *ira, IrInst *source_instr, ZigTypeI
return ira->codegen->invalid_inst_gen->value->type;
field->type_val = type_value;
field->type_entry = type_value->data.x_type;
if ((err = get_const_field_u29(ira, source_instr->source_node, field_value, "alignment", 2, &field->align)))
return ira->codegen->invalid_inst_gen->value->type;
}
return entry;
}