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https://github.com/ziglang/zig.git
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Added (broken) pointer info, float info
This commit is contained in:
Alexandros Naskos
parent
e9309d3b13
commit
0e5fb035e3
155
src/ir.cpp
155
src/ir.cpp
@ -15728,27 +15728,13 @@ static TypeTableEntry *ir_analyze_instruction_offset_of(IrAnalyze *ira,
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return ira->codegen->builtin_types.entry_num_lit_int;
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}
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static TypeTableEntry *ir_analyze_instruction_type_info(IrAnalyze *ira,
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IrInstructionTypeInfo *instruction)
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static ConstExprValue *ir_make_type_info_value(IrAnalyze *ira, ConstExprValue *parent, TypeTableEntry *type_entry)
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{
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IrInstruction *type_value = instruction->type_value->other;
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TypeTableEntry *type_entry = ir_resolve_type(ira, type_value);
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if (type_is_invalid(type_entry))
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return ira->codegen->builtin_types.entry_invalid;
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assert(type_entry != nullptr);
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assert(!type_is_invalid(type_entry));
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ConstExprValue *var_value = get_builtin_value(ira->codegen, "TypeInfo");
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assert(var_value->type->id == TypeTableEntryIdMetaType);
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TypeTableEntry *result_type = var_value->data.x_type;
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ConstExprValue *out_val = ir_build_const_from(ira, &instruction->base);
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// TODO: Do I need those? probably set in ir_build_const_from
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//out_val->special = ConstValSpecialStatic;
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//out_val->type = result_type;
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bigint_init_unsigned(&out_val->data.x_union.tag, type_id_index(type_entry->id));
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//out_val->data.x_union.parent.id = ConstParentIdNone;
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switch (type_entry->id) {
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switch (type_entry->id)
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{
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case TypeTableEntryIdInvalid:
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zig_unreachable();
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case TypeTableEntryIdMetaType:
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@ -15763,14 +15749,11 @@ static TypeTableEntry *ir_analyze_instruction_type_info(IrAnalyze *ira,
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case TypeTableEntryIdBlock:
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case TypeTableEntryIdArgTuple:
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case TypeTableEntryIdOpaque:
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out_val->data.x_union.payload = nullptr;
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break;
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// TODO: Construct a valid void payload.
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return nullptr;
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case TypeTableEntryIdInt:
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{
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// Error from 'ir_resolve_const': "unable to evaluate constant expression"
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ConstExprValue *payload = create_const_vals(1);
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out_val->data.x_union.payload = payload;
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payload->special = ConstValSpecialStatic;
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ConstExprValue *int_info_type = get_builtin_value(ira->codegen, "IntInfo");
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@ -15780,23 +15763,135 @@ static TypeTableEntry *ir_analyze_instruction_type_info(IrAnalyze *ira,
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ConstExprValue *fields = create_const_vals(2);
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payload->data.x_struct.fields = fields;
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payload->data.x_struct.parent.id = ConstParentIdUnion;
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payload->data.x_struct.parent.data.p_union.union_val = out_val;
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if (parent->type->id == TypeTableEntryIdStruct)
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{
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payload->data.x_struct.parent.id = ConstParentIdStruct;
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payload->data.x_struct.parent.data.p_union.union_val = parent;
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}
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else if (parent->type->id == TypeTableEntryIdUnion)
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{
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payload->data.x_struct.parent.id = ConstParentIdUnion;
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payload->data.x_struct.parent.data.p_union.union_val = parent;
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}
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else
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{
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payload->data.x_struct.parent.id = ConstParentIdNone;
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}
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// TODO: See what happens if we don't set the field type (set it to nullptr)
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// is_signed: bool
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fields[0].special = ConstValSpecialStatic;
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fields[0].type = ira->codegen->builtin_types.entry_bool;
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fields[0].data.x_bool = type_entry->data.integral.is_signed;
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// bits: u8
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fields[1].special = ConstValSpecialStatic;
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fields[1].type = ira->codegen->builtin_types.entry_u8;
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bigint_init_unsigned(&fields[1].data.x_bigint, type_entry->data.integral.bit_count);
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break;
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return payload;
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}
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case TypeTableEntryIdFloat:
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{
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ConstExprValue *payload = create_const_vals(1);
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payload->special = ConstValSpecialStatic;
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ConstExprValue *float_info_type = get_builtin_value(ira->codegen, "FloatInfo");
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assert(float_info_type->type->id == TypeTableEntryIdMetaType);
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payload->type = float_info_type->data.x_type;
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ConstExprValue *fields = create_const_vals(1);
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payload->data.x_struct.fields = fields;
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if (parent->type->id == TypeTableEntryIdStruct)
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{
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payload->data.x_struct.parent.id = ConstParentIdStruct;
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payload->data.x_struct.parent.data.p_union.union_val = parent;
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}
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else if (parent->type->id == TypeTableEntryIdUnion)
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{
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payload->data.x_struct.parent.id = ConstParentIdUnion;
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payload->data.x_struct.parent.data.p_union.union_val = parent;
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}
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else
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{
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payload->data.x_struct.parent.id = ConstParentIdNone;
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}
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// bits: u8
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fields[0].special = ConstValSpecialStatic;
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fields[0].type = ira->codegen->builtin_types.entry_u8;
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bigint_init_unsigned(&fields->data.x_bigint, type_entry->data.floating.bit_count);
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return payload;
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}
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case TypeTableEntryIdPointer:
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{
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ConstExprValue *payload = create_const_vals(1);
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payload->special = ConstValSpecialStatic;
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ConstExprValue *pointer_info_type = get_builtin_value(ira->codegen, "PointerInfo");
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assert(pointer_info_type->type->id == TypeTableEntryIdMetaType);
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payload->type = pointer_info_type->data.x_type;
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ConstExprValue *fields = create_const_vals(4);
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payload->data.x_struct.fields = fields;
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if (parent->type->id == TypeTableEntryIdStruct)
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{
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payload->data.x_struct.parent.id = ConstParentIdStruct;
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payload->data.x_struct.parent.data.p_union.union_val = parent;
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}
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else if (parent->type->id == TypeTableEntryIdUnion)
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{
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payload->data.x_struct.parent.id = ConstParentIdUnion;
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payload->data.x_struct.parent.data.p_union.union_val = parent;
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}
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else
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{
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payload->data.x_struct.parent.id = ConstParentIdNone;
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}
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// is_const: bool
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fields[0].special = ConstValSpecialStatic;
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fields[0].type = ira->codegen->builtin_types.entry_bool;
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fields[0].data.x_bool = type_entry->data.pointer.is_const;
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// is_volatile: bool
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fields[1].special = ConstValSpecialStatic;
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fields[1].type = ira->codegen->builtin_types.entry_bool;
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fields[1].data.x_bool = type_entry->data.pointer.is_volatile;
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// alignment: u32
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fields[2].special = ConstValSpecialStatic;
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fields[2].type = ira->codegen->builtin_types.entry_u32;
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bigint_init_unsigned(&fields->data.x_bigint, type_entry->data.pointer.alignment);
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// child: &TypeInfo
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ConstExprValue *type_info_type = get_builtin_value(ira->codegen, "TypeInfo");
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assert(type_info_type->type->id == TypeTableEntryIdMetaType);
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fields[3].special = ConstValSpecialStatic;
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fields[3].type = get_pointer_to_type(ira->codegen, type_info_type->data.x_type, false);
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fields[3].data.x_ptr.special = ConstPtrSpecialRef;
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fields[3].data.x_ptr.mut = ConstPtrMutComptimeVar;
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fields[3].data.x_ptr.data.ref.pointee = ir_make_type_info_value(ira, &fields[3], type_entry->data.pointer.child_type);
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return payload;
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}
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default:
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zig_panic("@typeInfo unsupported for %s", buf_ptr(&type_entry->name));
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zig_unreachable();
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}
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}
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static TypeTableEntry *ir_analyze_instruction_type_info(IrAnalyze *ira,
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IrInstructionTypeInfo *instruction)
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{
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IrInstruction *type_value = instruction->type_value->other;
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TypeTableEntry *type_entry = ir_resolve_type(ira, type_value);
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if (type_is_invalid(type_entry))
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return ira->codegen->builtin_types.entry_invalid;
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ConstExprValue *var_value = get_builtin_value(ira->codegen, "TypeInfo");
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assert(var_value->type->id == TypeTableEntryIdMetaType);
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TypeTableEntry *result_type = var_value->data.x_type;
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// TODO: We need to return a const pointer to the typeinfo, not the typeinfo by value.
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ConstExprValue *out_val = ir_build_const_from(ira, &instruction->base);
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out_val->type = result_type;
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bigint_init_unsigned(&out_val->data.x_union.tag, type_id_index(type_entry->id));
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out_val->data.x_union.payload = ir_make_type_info_value(ira, out_val, type_entry);
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return result_type;
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}
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