Change `tav` to be a pointer internally

src/check_expr.cpp

@@ -2119,7 +2119,7 @@ gb_internal bool check_is_not_addressable(CheckerContext *c, Operand *o) {
 			return true;
 		}
 		ast_node(ta, TypeAssertion, expr);
-		TypeAndValue tv = ta->expr->tav;
+		TypeAndValue tv = ta->expr->tav();
 		if (is_type_pointer(tv.type)) {
 			return false;
 		}
@@ -2590,7 +2590,7 @@ gb_internal void check_shift(CheckerContext *c, Operand *x, Operand *y, Ast *nod
 		TokenPos pos = ast_token(x->expr).pos;
 		if (x_is_untyped) {
 			if (x->expr != nullptr) {
-				x->expr->tav.is_lhs = true;
+				x->expr->tav().is_lhs = true;
 			}
 			x->mode = Addressing_Value;
 			if (type_hint) {
@@ -3567,9 +3567,9 @@ gb_internal Operand make_operand_from_node(Ast *node) {
 	GB_ASSERT(node != nullptr);
 	Operand x = {};
 	x.expr  = node;
-	x.mode  = node->tav.mode;
-	x.type  = node->tav.type;
-	x.value = node->tav.value;
+	x.mode  = node->tav().mode;
+	x.type  = node->tav().type;
+	x.value = node->tav().value;
 	return x;
 }
 
@@ -3579,8 +3579,8 @@ gb_internal void update_untyped_expr_type(CheckerContext *c, Ast *e, Type *type,
 	ExprInfo *old = check_get_expr_info(c, e);
 	if (old == nullptr) {
 		if (type != nullptr && type != t_invalid) {
-			if (e->tav.type == nullptr || e->tav.type == t_invalid) {
-				add_type_and_value(c->info, e, e->tav.mode, type ? type : e->tav.type, e->tav.value);
+			if (e->tav().type == nullptr || e->tav().type == t_invalid) {
+				add_type_and_value(c->info, e, e->tav().mode, type ? type : e->tav().type, e->tav().value);
 				if (e->kind == Ast_TernaryIfExpr) {
 					update_untyped_expr_type(c, e->TernaryIfExpr.x, type, final);
 					update_untyped_expr_type(c, e->TernaryIfExpr.y, type, final);
@@ -4146,7 +4146,7 @@ gb_internal ExactValue get_constant_field_single(CheckerContext *c, ExactValue v
 		}
 
 		if (cl->elems[0]->kind == Ast_FieldValue) {
-			if (is_type_struct(node->tav.type)) {
+			if (is_type_struct(node->tav().type)) {
 				bool found = false;
 				for_array(i, cl->elems) {
 					Ast *elem = cl->elems[i];
@@ -4155,10 +4155,10 @@ gb_internal ExactValue get_constant_field_single(CheckerContext *c, ExactValue v
 					}
 					ast_node(fv, FieldValue, elem);
 					String name = fv->field->Ident.token.string;
-					Selection sub_sel = lookup_field(node->tav.type, name, false);
+					Selection sub_sel = lookup_field(node->tav().type, name, false);
 					defer (array_free(&sub_sel.index));
 					if (sub_sel.index[0] == index) {
-						value = fv->value->tav.value;
+						value = fv->value->tav().value;
 						found = true;
 						break;
 					}
@@ -4167,7 +4167,7 @@ gb_internal ExactValue get_constant_field_single(CheckerContext *c, ExactValue v
 					// Use the zero value if it is not found
 					value = {};
 				}
-			} else if (is_type_array(node->tav.type) || is_type_enumerated_array(node->tav.type)) {
+			} else if (is_type_array(node->tav().type) || is_type_enumerated_array(node->tav().type)) {
 				for_array(i, cl->elems) {
 					Ast *elem = cl->elems[i];
 					if (elem->kind != Ast_FieldValue) {
@@ -4176,8 +4176,8 @@ gb_internal ExactValue get_constant_field_single(CheckerContext *c, ExactValue v
 					ast_node(fv, FieldValue, elem);
 					if (is_ast_range(fv->field)) {
 						ast_node(ie, BinaryExpr, fv->field);
-						TypeAndValue lo_tav = ie->left->tav;
-						TypeAndValue hi_tav = ie->right->tav;
+						TypeAndValue lo_tav = ie->left->tav();
+						TypeAndValue hi_tav = ie->right->tav();
 						GB_ASSERT(lo_tav.mode == Addressing_Constant);
 						GB_ASSERT(hi_tav.mode == Addressing_Constant);
 
@@ -4187,39 +4187,39 @@ gb_internal ExactValue get_constant_field_single(CheckerContext *c, ExactValue v
 
 						i64 corrected_index = index;
 
-						if (is_type_enumerated_array(node->tav.type)) {
-							Type *bt = base_type(node->tav.type);
+						if (is_type_enumerated_array(node->tav().type)) {
+							Type *bt = base_type(node->tav().type);
 							GB_ASSERT(bt->kind == Type_EnumeratedArray);
 							corrected_index = index + exact_value_to_i64(*bt->EnumeratedArray.min_value);
 						}
 						if (op != Token_RangeHalf) {
 							if (lo <= corrected_index && corrected_index <= hi) {
-								TypeAndValue tav = fv->value->tav;
+								TypeAndValue tav = fv->value->tav();
 								if (success_) *success_ = true;
 								if (finish_) *finish_ = false;
 								return tav.value;
 							}
 						} else {
 							if (lo <= corrected_index && corrected_index < hi) {
-								TypeAndValue tav = fv->value->tav;
+								TypeAndValue tav = fv->value->tav();
 								if (success_) *success_ = true;
 								if (finish_) *finish_ = false;
 								return tav.value;
 							}
 						}
 					} else {
-						TypeAndValue index_tav = fv->field->tav;
+						TypeAndValue index_tav = fv->field->tav();
 						GB_ASSERT(index_tav.mode == Addressing_Constant);
 						ExactValue index_value = index_tav.value;
-						if (is_type_enumerated_array(node->tav.type)) {
-							Type *bt = base_type(node->tav.type);
+						if (is_type_enumerated_array(node->tav().type)) {
+							Type *bt = base_type(node->tav().type);
 							GB_ASSERT(bt->kind == Type_EnumeratedArray);
 							index_value = exact_value_sub(index_value, *bt->EnumeratedArray.min_value);
 						}
 
 						i64 field_index = exact_value_to_i64(index_value);
 						if (index == field_index) {
-							TypeAndValue tav = fv->value->tav;
+							TypeAndValue tav = fv->value->tav();
 							if (success_) *success_ = true;
 							if (finish_) *finish_ = false;
 							return tav.value;;
@@ -4241,7 +4241,7 @@ gb_internal ExactValue get_constant_field_single(CheckerContext *c, ExactValue v
 				return value;
 			}
 
-			TypeAndValue tav = cl->elems[index]->tav;
+			TypeAndValue tav = cl->elems[index]->tav();
 			if (tav.mode == Addressing_Constant) {
 				if (success_) *success_ = true;
 				if (finish_) *finish_ = false;
@@ -8663,7 +8663,7 @@ gb_internal ExprKind check_compound_literal(CheckerContext *c, Operand *o, Ast *
 				Ast *e = cl->elems[i];
 				GB_ASSERT(e->kind != Ast_FieldValue);
 
-				TypeAndValue tav = e->tav;
+				TypeAndValue tav = e->tav();
 				if (tav.mode != Addressing_Constant) {
 					continue;
 				}
@@ -8863,9 +8863,9 @@ gb_internal ExprKind check_selector_call_expr(CheckerContext *c, Operand *o, Ast
 	if (se->modified_call) {
 		// Prevent double evaluation
 		o->expr  = node;
-		o->type  = node->tav.type;
-		o->value = node->tav.value;
-		o->mode  = node->tav.mode;
+		o->type  = node->tav().type;
+		o->value = node->tav().value;
+		o->mode  = node->tav().mode;
 		return Expr_Expr;
 	}
 
@@ -8927,9 +8927,9 @@ gb_internal ExprKind check_selector_call_expr(CheckerContext *c, Operand *o, Ast
 	}
 
 	Operand y = {};
-	y.mode = first_arg->tav.mode;
-	y.type = first_arg->tav.type;
-	y.value = first_arg->tav.value;
+	y.mode = first_arg->tav().mode;
+	y.type = first_arg->tav().type;
+	y.value = first_arg->tav().value;
 
 	if (check_is_assignable_to(c, &y, first_type)) {
 		// Do nothing, it's valid
@@ -9385,7 +9385,7 @@ gb_internal ExprKind check_expr_base_internal(CheckerContext *c, Operand *o, Ast
 
 	case_ast_node(bl, BasicLit, node);
 		Type *t = t_invalid;
-		switch (node->tav.value.kind) {
+		switch (node->tav().value.kind) {
 		case ExactValue_String:     t = t_untyped_string;     break;
 		case ExactValue_Float:      t = t_untyped_float;      break;
 		case ExactValue_Complex:    t = t_untyped_complex;    break;
@@ -9403,7 +9403,7 @@ gb_internal ExprKind check_expr_base_internal(CheckerContext *c, Operand *o, Ast
 
 		o->mode  = Addressing_Constant;
 		o->type  = t;
-		o->value = node->tav.value;
+		o->value = node->tav().value;
 	case_end;
 
 	case_ast_node(bd, BasicDirective, node);
@@ -9859,12 +9859,12 @@ gb_internal bool is_exact_value_zero(ExactValue const &v) {
 			} else {
 				for_array(i, cl->elems) {
 					Ast *elem = cl->elems[i];
-					if (elem->tav.mode != Addressing_Constant) {
-						// if (elem->tav.value.kind != ExactValue_Invalid) {
+					if (elem->tav().mode != Addressing_Constant) {
+						// if (elem->tav().value.kind != ExactValue_Invalid) {
 						return false;
 						// }
 					}
-					if (!is_exact_value_zero(elem->tav.value)) {
+					if (!is_exact_value_zero(elem->tav().value)) {
 						return false;
 					}
 				}

src/check_stmt.cpp

@@ -8,7 +8,7 @@ gb_internal bool is_diverging_expr(Ast *expr) {
 		return name == "panic";
 	}
 	Ast *proc = unparen_expr(expr->CallExpr.proc);
-	TypeAndValue tv = proc->tav;
+	TypeAndValue tv = proc->tav();
 	if (tv.mode == Addressing_Builtin) {
 		Entity *e = entity_of_node(proc);
 		BuiltinProcId id = BuiltinProc_Invalid;
@@ -250,7 +250,7 @@ gb_internal bool check_is_terminating(Ast *node, String const &label) {
 
 	case_ast_node(ws, WhenStmt, node);
 		// TODO(bill): Is this logic correct for when statements?
-		auto const &tv = ws->cond->tav;
+		auto const &tv = ws->cond->tav();
 		if (tv.mode != Addressing_Constant) {
 			// NOTE(bill): Check the things regardless as a bug occurred earlier
 			if (ws->else_stmt != nullptr) {
@@ -411,7 +411,7 @@ gb_internal Type *check_assignment_variable(CheckerContext *ctx, Operand *lhs, O
 		Ast *ln = unparen_expr(lhs->expr);
 		if (ln->kind == Ast_IndexExpr) {
 			Ast *x = ln->IndexExpr.expr;
-			TypeAndValue tav = x->tav;
+			TypeAndValue tav = x->tav();
 			GB_ASSERT(tav.mode != Addressing_Invalid);
 			if (tav.mode != Addressing_Variable) {
 				if (!is_type_pointer(tav.type)) {
@@ -1497,7 +1497,7 @@ gb_internal void check_stmt_internal(CheckerContext *ctx, Ast *node, u32 flags)
 					break;
 				}
 
-				switch (be->left->tav.mode) {
+				switch (be->left->tav().mode) {
 				case Addressing_Context:
 				case Addressing_Variable:
 				case Addressing_MapIndex:
@@ -2331,7 +2331,7 @@ gb_internal void check_stmt_internal(CheckerContext *ctx, Ast *node, u32 flags)
 							error(e->token, "A static variable declaration with a default value must be constant");
 						} else {
 							Ast *value = vd->values[i];
-							if (value->tav.mode != Addressing_Constant) {
+							if (value->tav().mode != Addressing_Constant) {
 								error(e->token, "A static variable declaration with a default value must be constant");
 							}
 						}

src/check_type.cpp

@@ -2569,8 +2569,8 @@ gb_internal bool check_type_internal(CheckerContext *ctx, Ast *e, Type **type, T
 	case_end;
 
 	case_ast_node(tt, TypeidType, e);
-		e->tav.mode = Addressing_Type;
-		e->tav.type = t_typeid;
+		e->tav().mode = Addressing_Type;
+		e->tav().type = t_typeid;
 		*type = t_typeid;
 		set_base_type(named_type, *type);
 		return true;

src/checker.cpp

@@ -1287,13 +1287,13 @@ gb_internal void destroy_checker(Checker *c) {
 gb_internal TypeAndValue type_and_value_of_expr(Ast *expr) {
 	TypeAndValue tav = {};
 	if (expr != nullptr) {
-		tav = expr->tav;
+		tav = expr->tav();
 	}
 	return tav;
 }
 
 gb_internal Type *type_of_expr(Ast *expr) {
-	TypeAndValue tav = expr->tav;
+	TypeAndValue tav = expr->tav();
 	if (tav.mode != Addressing_Invalid) {
 		return tav.type;
 	}
@@ -1462,20 +1462,20 @@ gb_internal void add_type_and_value(CheckerInfo *i, Ast *expr, AddressingMode mo
 	Ast *prev_expr = nullptr;
 	while (prev_expr != expr) {
 		prev_expr = expr;
-		expr->tav.mode = mode;
-		if (type != nullptr && expr->tav.type != nullptr &&
-		    is_type_any(type) && is_type_untyped(expr->tav.type)) {
+		expr->tav().mode = mode;
+		if (type != nullptr && expr->tav().type != nullptr &&
+		    is_type_any(type) && is_type_untyped(expr->tav().type)) {
 			// ignore
 		} else {
-			expr->tav.type = type;
+			expr->tav().type = type;
 		}
 
 		if (mode == Addressing_Constant || mode == Addressing_Invalid) {
-			expr->tav.value = value;
+			expr->tav().value = value;
 		} else if (mode == Addressing_Value && is_type_typeid(type)) {
-			expr->tav.value = value;
+			expr->tav().value = value;
 		} else if (mode == Addressing_Value && is_type_proc(type)) {
-			expr->tav.value = value;
+			expr->tav().value = value;
 		}
 
 		expr = unparen_expr(expr);
@@ -3635,8 +3635,8 @@ gb_internal void check_collect_value_decl(CheckerContext *c, Ast *decl) {
 				if (value != nullptr) {
 					if (value->kind == Ast_BasicLit && value->BasicLit.token.kind == Token_String) {
 						String v = {};
-						if (value->tav.value.kind == ExactValue_String) {
-							v = value->tav.value.value_string;
+						if (value->tav().value.kind == ExactValue_String) {
+							v = value->tav().value.value_string;
 						}
 						if (v == "file") {
 							kind = EntityVisiblity_PrivateToFile;

src/llvm_backend_const.cpp

@@ -57,7 +57,7 @@ gb_internal bool lb_is_const_nil(lbValue value) {
 
 gb_internal bool lb_is_expr_constant_zero(Ast *expr) {
 	GB_ASSERT(expr != nullptr);
-	auto v = exact_value_to_integer(expr->tav.value);
+	auto v = exact_value_to_integer(expr->tav().value);
 	if (v.kind == ExactValue_Integer) {
 		return big_int_cmp_zero(&v.value_integer) == 0;
 	}
@@ -720,8 +720,8 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 						ast_node(fv, FieldValue, elem);
 						if (is_ast_range(fv->field)) {
 							ast_node(ie, BinaryExpr, fv->field);
-							TypeAndValue lo_tav = ie->left->tav;
-							TypeAndValue hi_tav = ie->right->tav;
+							TypeAndValue lo_tav = ie->left->tav();
+							TypeAndValue hi_tav = ie->right->tav();
 							GB_ASSERT(lo_tav.mode == Addressing_Constant);
 							GB_ASSERT(hi_tav.mode == Addressing_Constant);
 
@@ -732,7 +732,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 								hi += 1;
 							}
 							if (lo == i) {
-								TypeAndValue tav = fv->value->tav;
+								TypeAndValue tav = fv->value->tav();
 								LLVMValueRef val = lb_const_value(m, elem_type, tav.value, allow_local).value;
 								for (i64 k = lo; k < hi; k++) {
 									values[value_index++] = val;
@@ -743,11 +743,11 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 								break;
 							}
 						} else {
-							TypeAndValue index_tav = fv->field->tav;
+							TypeAndValue index_tav = fv->field->tav();
 							GB_ASSERT(index_tav.mode == Addressing_Constant);
 							i64 index = exact_value_to_i64(index_tav.value);
 							if (index == i) {
-								TypeAndValue tav = fv->value->tav;
+								TypeAndValue tav = fv->value->tav();
 								LLVMValueRef val = lb_const_value(m, elem_type, tav.value, allow_local).value;
 								values[value_index++] = val;
 								found = true;
@@ -769,7 +769,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 				LLVMValueRef *values = gb_alloc_array(temporary_allocator(), LLVMValueRef, cast(isize)type->Array.count);
 
 				for (isize i = 0; i < elem_count; i++) {
-					TypeAndValue tav = cl->elems[i]->tav;
+					TypeAndValue tav = cl->elems[i]->tav();
 					GB_ASSERT(tav.mode != Addressing_Invalid);
 					values[i] = lb_const_value(m, elem_type, tav.value, allow_local).value;
 				}
@@ -804,8 +804,8 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 						ast_node(fv, FieldValue, elem);
 						if (is_ast_range(fv->field)) {
 							ast_node(ie, BinaryExpr, fv->field);
-							TypeAndValue lo_tav = ie->left->tav;
-							TypeAndValue hi_tav = ie->right->tav;
+							TypeAndValue lo_tav = ie->left->tav();
+							TypeAndValue hi_tav = ie->right->tav();
 							GB_ASSERT(lo_tav.mode == Addressing_Constant);
 							GB_ASSERT(hi_tav.mode == Addressing_Constant);
 
@@ -816,7 +816,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 								hi += 1;
 							}
 							if (lo == i) {
-								TypeAndValue tav = fv->value->tav;
+								TypeAndValue tav = fv->value->tav();
 								LLVMValueRef val = lb_const_value(m, elem_type, tav.value, allow_local).value;
 								for (i64 k = lo; k < hi; k++) {
 									values[value_index++] = val;
@@ -827,11 +827,11 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 								break;
 							}
 						} else {
-							TypeAndValue index_tav = fv->field->tav;
+							TypeAndValue index_tav = fv->field->tav();
 							GB_ASSERT(index_tav.mode == Addressing_Constant);
 							i64 index = exact_value_to_i64(index_tav.value);
 							if (index == i) {
-								TypeAndValue tav = fv->value->tav;
+								TypeAndValue tav = fv->value->tav();
 								LLVMValueRef val = lb_const_value(m, elem_type, tav.value, allow_local).value;
 								values[value_index++] = val;
 								found = true;
@@ -853,7 +853,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 				LLVMValueRef *values = gb_alloc_array(temporary_allocator(), LLVMValueRef, cast(isize)type->EnumeratedArray.count);
 
 				for (isize i = 0; i < elem_count; i++) {
-					TypeAndValue tav = cl->elems[i]->tav;
+					TypeAndValue tav = cl->elems[i]->tav();
 					GB_ASSERT(tav.mode != Addressing_Invalid);
 					values[i] = lb_const_value(m, elem_type, tav.value, allow_local).value;
 				}
@@ -887,8 +887,8 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 						ast_node(fv, FieldValue, elem);
 						if (is_ast_range(fv->field)) {
 							ast_node(ie, BinaryExpr, fv->field);
-							TypeAndValue lo_tav = ie->left->tav;
-							TypeAndValue hi_tav = ie->right->tav;
+							TypeAndValue lo_tav = ie->left->tav();
+							TypeAndValue hi_tav = ie->right->tav();
 							GB_ASSERT(lo_tav.mode == Addressing_Constant);
 							GB_ASSERT(hi_tav.mode == Addressing_Constant);
 
@@ -899,7 +899,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 								hi += 1;
 							}
 							if (lo == i) {
-								TypeAndValue tav = fv->value->tav;
+								TypeAndValue tav = fv->value->tav();
 								LLVMValueRef val = lb_const_value(m, elem_type, tav.value, allow_local).value;
 								for (i64 k = lo; k < hi; k++) {
 									values[value_index++] = val;
@@ -910,11 +910,11 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 								break;
 							}
 						} else {
-							TypeAndValue index_tav = fv->field->tav;
+							TypeAndValue index_tav = fv->field->tav();
 							GB_ASSERT(index_tav.mode == Addressing_Constant);
 							i64 index = exact_value_to_i64(index_tav.value);
 							if (index == i) {
-								TypeAndValue tav = fv->value->tav;
+								TypeAndValue tav = fv->value->tav();
 								LLVMValueRef val = lb_const_value(m, elem_type, tav.value, allow_local).value;
 								values[value_index++] = val;
 								found = true;
@@ -932,7 +932,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 				return res;
 			} else {
 				for (isize i = 0; i < elem_count; i++) {
-					TypeAndValue tav = cl->elems[i]->tav;
+					TypeAndValue tav = cl->elems[i]->tav();
 					GB_ASSERT(tav.mode != Addressing_Invalid);
 					values[i] = lb_const_value(m, elem_type, tav.value, allow_local).value;
 				}
@@ -974,7 +974,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 						ast_node(fv, FieldValue, cl->elems[i]);
 						String name = fv->field->Ident.token.string;
 
-						TypeAndValue tav = fv->value->tav;
+						TypeAndValue tav = fv->value->tav();
 						GB_ASSERT(tav.mode != Addressing_Invalid);
 
 						Selection sel = lookup_field(type, name, false);
@@ -989,7 +989,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 				} else {
 					for_array(i, cl->elems) {
 						Entity *f = type->Struct.fields[i];
-						TypeAndValue tav = cl->elems[i]->tav;
+						TypeAndValue tav = cl->elems[i]->tav();
 						ExactValue val = {};
 						if (tav.mode != Addressing_Invalid) {
 							val = tav.value;
@@ -1073,7 +1073,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 				Ast *e = cl->elems[i];
 				GB_ASSERT(e->kind != Ast_FieldValue);
 
-				TypeAndValue tav = e->tav;
+				TypeAndValue tav = e->tav();
 				if (tav.mode != Addressing_Constant) {
 					continue;
 				}
@@ -1106,8 +1106,8 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 					ast_node(fv, FieldValue, elem);
 					if (is_ast_range(fv->field)) {
 						ast_node(ie, BinaryExpr, fv->field);
-						TypeAndValue lo_tav = ie->left->tav;
-						TypeAndValue hi_tav = ie->right->tav;
+						TypeAndValue lo_tav = ie->left->tav();
+						TypeAndValue hi_tav = ie->right->tav();
 						GB_ASSERT(lo_tav.mode == Addressing_Constant);
 						GB_ASSERT(hi_tav.mode == Addressing_Constant);
 
@@ -1122,7 +1122,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 						GB_ASSERT(lo <= hi);
 						
 						
-						TypeAndValue tav = fv->value->tav;
+						TypeAndValue tav = fv->value->tav();
 						LLVMValueRef val = lb_const_value(m, elem_type, tav.value, allow_local).value;
 						for (i64 k = lo; k < hi; k++) {
 							i64 offset = matrix_row_major_index_to_offset(type, k);
@@ -1130,11 +1130,11 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 							values[offset] = val;
 						}
 					} else {
-						TypeAndValue index_tav = fv->field->tav;
+						TypeAndValue index_tav = fv->field->tav();
 						GB_ASSERT(index_tav.mode == Addressing_Constant);
 						i64 index = exact_value_to_i64(index_tav.value);
 						GB_ASSERT(index < max_count);
-						TypeAndValue tav = fv->value->tav;
+						TypeAndValue tav = fv->value->tav();
 						LLVMValueRef val = lb_const_value(m, elem_type, tav.value, allow_local).value;
 						i64 offset = matrix_row_major_index_to_offset(type, index);
 						GB_ASSERT(values[offset] == nullptr);
@@ -1156,7 +1156,7 @@ gb_internal lbValue lb_const_value(lbModule *m, Type *type, ExactValue value, bo
 				LLVMValueRef *values = gb_alloc_array(temporary_allocator(), LLVMValueRef, cast(isize)total_count);
 				
 				for_array(i, cl->elems) {
-					TypeAndValue tav = cl->elems[i]->tav;
+					TypeAndValue tav = cl->elems[i]->tav();
 					GB_ASSERT(tav.mode != Addressing_Invalid);
 					i64 offset = matrix_row_major_index_to_offset(type, i);
 					values[offset] = lb_const_value(m, elem_type, tav.value, allow_local).value;

src/llvm_backend_expr.cpp

@@ -1330,7 +1330,7 @@ gb_internal lbValue lb_build_binary_expr(lbProcedure *p, Ast *expr) {
 
 	TypeAndValue tv = type_and_value_of_expr(expr);
 
-	if (is_type_matrix(be->left->tav.type) || is_type_matrix(be->right->tav.type)) {
+	if (is_type_matrix(be->left->tav().type) || is_type_matrix(be->right->tav().type)) {
 		lbValue left = lb_build_expr(p, be->left);
 		lbValue right = lb_build_expr(p, be->right);
 		return lb_emit_arith_matrix(p, be->op.kind, left, right, default_type(tv.type), false);
@@ -1372,12 +1372,12 @@ gb_internal lbValue lb_build_binary_expr(lbProcedure *p, Ast *expr) {
 
 	case Token_CmpEq:
 	case Token_NotEq:
-		if (is_type_untyped_nil(be->right->tav.type)) {
+		if (is_type_untyped_nil(be->right->tav().type)) {
 			lbValue left = lb_build_expr(p, be->left);
 			lbValue cmp = lb_emit_comp_against_nil(p, be->op.kind, left);
 			Type *type = default_type(tv.type);
 			return lb_emit_conv(p, cmp, type);
-		} else if (is_type_untyped_nil(be->left->tav.type)) {
+		} else if (is_type_untyped_nil(be->left->tav().type)) {
 			lbValue right = lb_build_expr(p, be->right);
 			lbValue cmp = lb_emit_comp_against_nil(p, be->op.kind, right);
 			Type *type = default_type(tv.type);
@@ -1392,11 +1392,11 @@ gb_internal lbValue lb_build_binary_expr(lbProcedure *p, Ast *expr) {
 			lbValue left = {};
 			lbValue right = {};
 
-			if (be->left->tav.mode == Addressing_Type) {
-				left = lb_typeid(p->module, be->left->tav.type);
+			if (be->left->tav().mode == Addressing_Type) {
+				left = lb_typeid(p->module, be->left->tav().type);
 			}
-			if (be->right->tav.mode == Addressing_Type) {
-				right = lb_typeid(p->module, be->right->tav.type);
+			if (be->right->tav().mode == Addressing_Type) {
+				right = lb_typeid(p->module, be->right->tav().type);
 			}
 			if (left.value == nullptr)  left  = lb_build_expr(p, be->left);
 			if (right.value == nullptr) right = lb_build_expr(p, be->right);
@@ -3093,7 +3093,7 @@ gb_internal lbValue lb_build_expr_internal(lbProcedure *p, Ast *expr) {
 	if (tv.value.kind != ExactValue_Invalid) {
 		// NOTE(bill): The commented out code below is just for debug purposes only
 		// if (is_type_untyped(type)) {
-		// 	gb_printf_err("%s %s : %s @ %p\n", token_pos_to_string(expr_pos), expr_to_string(expr), type_to_string(expr->tav.type), expr);
+		// 	gb_printf_err("%s %s : %s @ %p\n", token_pos_to_string(expr_pos), expr_to_string(expr), type_to_string(expr->tav().type), expr);
 		// 	GB_PANIC("%s\n", type_to_string(tv.type));
 		// }
 
@@ -3514,8 +3514,8 @@ gb_internal void lb_build_addr_compound_lit_populate(lbProcedure *p, Slice<Ast *
 			}
 			if (is_ast_range(fv->field)) {
 				ast_node(ie, BinaryExpr, fv->field);
-				TypeAndValue lo_tav = ie->left->tav;
-				TypeAndValue hi_tav = ie->right->tav;
+				TypeAndValue lo_tav = ie->left->tav();
+				TypeAndValue hi_tav = ie->right->tav();
 				GB_ASSERT(lo_tav.mode == Addressing_Constant);
 				GB_ASSERT(hi_tav.mode == Addressing_Constant);
 
@@ -3556,7 +3556,7 @@ gb_internal void lb_build_addr_compound_lit_populate(lbProcedure *p, Slice<Ast *
 					}
 				}
 			} else {
-				auto tav = fv->field->tav;
+				auto tav = fv->field->tav();
 				GB_ASSERT(tav.mode == Addressing_Constant);
 				i64 index = exact_value_to_i64(tav.value);
 
@@ -3632,7 +3632,7 @@ gb_internal lbAddr lb_build_addr_index_expr(lbProcedure *p, Ast *expr) {
 		return lb_addr_soa_variable(val, index, ie->index);
 	}
 
-	if (ie->expr->tav.mode == Addressing_SoaVariable) {
+	if (ie->expr->tav().mode == Addressing_SoaVariable) {
 		// SOA Structures for slices/dynamic arrays
 		GB_ASSERT(is_type_pointer(type_of_expr(ie->expr)));
 
@@ -4451,8 +4451,8 @@ gb_internal lbAddr lb_build_addr_internal(lbProcedure *p, Ast *expr) {
 					a = lb_addr_get_ptr(p, addr);
 				}
 
-				GB_ASSERT(is_type_array(expr->tav.type));
-				return lb_addr_swizzle(a, expr->tav.type, swizzle_count, swizzle_indices);
+				GB_ASSERT(is_type_array(expr->tav().type));
+				return lb_addr_swizzle(a, expr->tav().type, swizzle_count, swizzle_indices);
 			}
 
 			Selection sel = lookup_field(type, selector, false);
@@ -4621,7 +4621,7 @@ gb_internal lbAddr lb_build_addr_internal(lbProcedure *p, Ast *expr) {
 
 	case_ast_node(ce, CallExpr, expr);
 		BuiltinProcId builtin_id = BuiltinProc_Invalid;
-		if (ce->proc->tav.mode == Addressing_Builtin) {
+		if (ce->proc->tav().mode == Addressing_Builtin) {
 			Entity *e = entity_of_node(ce->proc);
 			if (e != nullptr) {
 				builtin_id = cast(BuiltinProcId)e->Builtin.id;
@@ -4629,7 +4629,7 @@ gb_internal lbAddr lb_build_addr_internal(lbProcedure *p, Ast *expr) {
 				builtin_id = BuiltinProc_DIRECTIVE;
 			}
 		}
-		auto const &tv = expr->tav;
+		auto const &tv = expr->tav();
 		if (builtin_id == BuiltinProc_swizzle &&
 		    is_type_array(tv.type)) {
 		    	// NOTE(bill, 2021-08-09): `swizzle` has some bizarre semantics so it needs to be

src/llvm_backend_proc.cpp

@@ -1516,7 +1516,7 @@ gb_internal lbValue lb_build_builtin_simd_proc(lbProcedure *p, Ast *expr, TypeAn
 			BigInt bi_count = {};
 			big_int_from_i64(&bi_count, count);
 
-			TypeAndValue const &tv = ce->args[1]->tav;
+			TypeAndValue const &tv = ce->args[1]->tav();
 			ExactValue val = exact_value_to_integer(tv.value);
 			GB_ASSERT(val.kind == ExactValue_Integer);
 			BigInt *bi = &val.value_integer;
@@ -2428,16 +2428,16 @@ gb_internal lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValu
 
 
 	case BuiltinProc_type_equal_proc:
-		return lb_equal_proc_for_type(p->module, ce->args[0]->tav.type);
+		return lb_equal_proc_for_type(p->module, ce->args[0]->tav().type);
 
 	case BuiltinProc_type_hasher_proc:
-		return lb_hasher_proc_for_type(p->module, ce->args[0]->tav.type);
+		return lb_hasher_proc_for_type(p->module, ce->args[0]->tav().type);
 
 	case BuiltinProc_type_map_info:
-		return lb_gen_map_info_ptr(p->module, ce->args[0]->tav.type);
+		return lb_gen_map_info_ptr(p->module, ce->args[0]->tav().type);
 
 	case BuiltinProc_type_map_cell_info:
-		return lb_gen_map_cell_info_ptr(p->module, ce->args[0]->tav.type);
+		return lb_gen_map_cell_info_ptr(p->module, ce->args[0]->tav().type);
 
 
 	case BuiltinProc_fixed_point_mul:
@@ -2505,7 +2505,7 @@ gb_internal lbValue lb_build_builtin_proc(lbProcedure *p, Ast *expr, TypeAndValu
 	case BuiltinProc_prefetch_write_data:
 		{
 			lbValue ptr = lb_emit_conv(p, lb_build_expr(p, ce->args[0]), t_rawptr);
-			unsigned long long locality = cast(unsigned long long)exact_value_to_i64(ce->args[1]->tav.value);
+			unsigned long long locality = cast(unsigned long long)exact_value_to_i64(ce->args[1]->tav().value);
 			unsigned long long rw = 0;
 			unsigned long long cache = 0;
 			switch (id) {
@@ -3060,8 +3060,8 @@ gb_internal lbValue lb_build_call_expr_internal(lbProcedure *p, Ast *expr) {
 		}
 	}
 
-	if (proc_expr->tav.mode == Addressing_Constant) {
-		ExactValue v = proc_expr->tav.value;
+	if (proc_expr->tav().mode == Addressing_Constant) {
+		ExactValue v = proc_expr->tav().value;
 		switch (v.kind) {
 		case ExactValue_Integer:
 			{
@@ -3070,7 +3070,7 @@ gb_internal lbValue lb_build_call_expr_internal(lbProcedure *p, Ast *expr) {
 				x.value = LLVMConstInt(lb_type(m, t_uintptr), u, false);
 				x.type = t_uintptr;
 				x = lb_emit_conv(p, x, t_rawptr);
-				value = lb_emit_conv(p, x, proc_expr->tav.type);
+				value = lb_emit_conv(p, x, proc_expr->tav().type);
 				break;
 			}
 		case ExactValue_Pointer:
@@ -3080,7 +3080,7 @@ gb_internal lbValue lb_build_call_expr_internal(lbProcedure *p, Ast *expr) {
 				x.value = LLVMConstInt(lb_type(m, t_uintptr), u, false);
 				x.type = t_uintptr;
 				x = lb_emit_conv(p, x, t_rawptr);
-				value = lb_emit_conv(p, x, proc_expr->tav.type);
+				value = lb_emit_conv(p, x, proc_expr->tav().type);
 				break;
 			}
 		}

src/llvm_backend_stmt.cpp

@@ -952,11 +952,11 @@ gb_internal void lb_build_unroll_range_stmt(lbProcedure *p, AstUnrollRangeStmt *
 		TokenKind op = expr->BinaryExpr.op.kind;
 		Ast *start_expr = expr->BinaryExpr.left;
 		Ast *end_expr   = expr->BinaryExpr.right;
-		GB_ASSERT(start_expr->tav.mode == Addressing_Constant);
-		GB_ASSERT(end_expr->tav.mode == Addressing_Constant);
+		GB_ASSERT(start_expr->tav().mode == Addressing_Constant);
+		GB_ASSERT(end_expr->tav().mode == Addressing_Constant);
 
-		ExactValue start = start_expr->tav.value;
-		ExactValue end   = end_expr->tav.value;
+		ExactValue start = start_expr->tav().value;
+		ExactValue end   = end_expr->tav().value;
 		if (op != Token_RangeHalf) { // .. [start, end] (or ..=)
 			ExactValue index = exact_value_i64(0);
 			for (ExactValue val = start;
@@ -1006,16 +1006,16 @@ gb_internal void lb_build_unroll_range_stmt(lbProcedure *p, AstUnrollRangeStmt *
 		if (val0_type) val0_addr = lb_build_addr(p, rs->val0);
 		if (val1_type) val1_addr = lb_build_addr(p, rs->val1);
 
-		GB_ASSERT(expr->tav.mode == Addressing_Constant);
+		GB_ASSERT(expr->tav().mode == Addressing_Constant);
 
-		Type *t = base_type(expr->tav.type);
+		Type *t = base_type(expr->tav().type);
 
 
 		switch (t->kind) {
 		case Type_Basic:
 			GB_ASSERT(is_type_string(t));
 			{
-				ExactValue value = expr->tav.value;
+				ExactValue value = expr->tav().value;
 				GB_ASSERT(value.kind == ExactValue_String);
 				String str = value.value_string;
 				Rune codepoint = 0;
@@ -1109,7 +1109,7 @@ gb_internal bool lb_switch_stmt_can_be_trivial_jump_table(AstSwitchStmt *ss, boo
 			if (is_ast_range(expr)) {
 				return false;
 			}
-			if (expr->tav.mode == Addressing_Type) {
+			if (expr->tav().mode == Addressing_Type) {
 				GB_ASSERT(is_typeid);
 				continue;
 			}
@@ -1209,12 +1209,12 @@ gb_internal void lb_build_switch_stmt(lbProcedure *p, AstSwitchStmt *ss, Scope *
 
 			if (switch_instr != nullptr) {
 				lbValue on_val = {};
-				if (expr->tav.mode == Addressing_Type) {
+				if (expr->tav().mode == Addressing_Type) {
 					GB_ASSERT(is_type_typeid(tag.type));
-					lbValue e = lb_typeid(p->module, expr->tav.type);
+					lbValue e = lb_typeid(p->module, expr->tav().type);
 					on_val = lb_emit_conv(p, e, tag.type);
 				} else {
-					GB_ASSERT(expr->tav.mode == Addressing_Constant);
+					GB_ASSERT(expr->tav().mode == Addressing_Constant);
 					GB_ASSERT(!is_ast_range(expr));
 
 					on_val = lb_build_expr(p, expr);
@@ -1245,9 +1245,9 @@ gb_internal void lb_build_switch_stmt(lbProcedure *p, AstSwitchStmt *ss, Scope *
 				lbValue cond_rhs = lb_emit_comp(p, op, tag, rhs);
 				cond = lb_emit_arith(p, Token_And, cond_lhs, cond_rhs, t_bool);
 			} else {
-				if (expr->tav.mode == Addressing_Type) {
+				if (expr->tav().mode == Addressing_Type) {
 					GB_ASSERT(is_type_typeid(tag.type));
-					lbValue e = lb_typeid(p->module, expr->tav.type);
+					lbValue e = lb_typeid(p->module, expr->tav().type);
 					e = lb_emit_conv(p, e, tag.type);
 					cond = lb_emit_comp(p, Token_CmpEq, tag, e);
 				} else {
@@ -1476,11 +1476,11 @@ gb_internal void lb_build_static_variables(lbProcedure *p, AstValueDecl *vd) {
 		if (vd->values.count > 0) {
 			GB_ASSERT(vd->names.count == vd->values.count);
 			Ast *ast_value = vd->values[i];
-			GB_ASSERT(ast_value->tav.mode == Addressing_Constant ||
-			          ast_value->tav.mode == Addressing_Invalid);
+			GB_ASSERT(ast_value->tav().mode == Addressing_Constant ||
+			          ast_value->tav().mode == Addressing_Invalid);
 
 			bool allow_local = false;
-			value = lb_const_value(p->module, ast_value->tav.type, ast_value->tav.value, allow_local);
+			value = lb_const_value(p->module, ast_value->tav().type, ast_value->tav().value, allow_local);
 		}
 
 		Ast *ident = vd->names[i];
@@ -2068,7 +2068,7 @@ gb_internal void lb_build_assign_stmt(lbProcedure *p, AstAssignStmt *as) {
 	op_ += Token_Add - Token_AddEq; // Convert += to +
 	TokenKind op = cast(TokenKind)op_;
 	if (op == Token_CmpAnd || op == Token_CmpOr) {
-		Type *type = as->lhs[0]->tav.type;
+		Type *type = as->lhs[0]->tav().type;
 		lbValue new_value = lb_emit_logical_binary_expr(p, op, as->lhs[0], as->rhs[0], type);
 
 		lbAddr lhs = lb_build_addr(p, as->lhs[0]);

src/llvm_backend_utility.cpp

@@ -1929,7 +1929,7 @@ gb_internal lbAddr lb_handle_objc_find_or_register_selector(lbProcedure *p, Stri
 gb_internal lbValue lb_handle_objc_find_selector(lbProcedure *p, Ast *expr) {
 	ast_node(ce, CallExpr, expr);
 
-	auto tav = ce->args[0]->tav;
+	auto tav = ce->args[0]->tav();
 	GB_ASSERT(tav.value.kind == ExactValue_String);
 	String name = tav.value.value_string;
 	return lb_addr_load(p, lb_handle_objc_find_or_register_selector(p, name));
@@ -1939,7 +1939,7 @@ gb_internal lbValue lb_handle_objc_register_selector(lbProcedure *p, Ast *expr)
 	ast_node(ce, CallExpr, expr);
 	lbModule *m = p->module;
 
-	auto tav = ce->args[0]->tav;
+	auto tav = ce->args[0]->tav();
 	GB_ASSERT(tav.value.kind == ExactValue_String);
 	String name = tav.value.value_string;
 	lbAddr dst = lb_handle_objc_find_or_register_selector(p, name);
@@ -1975,7 +1975,7 @@ gb_internal lbAddr lb_handle_objc_find_or_register_class(lbProcedure *p, String
 gb_internal lbValue lb_handle_objc_find_class(lbProcedure *p, Ast *expr) {
 	ast_node(ce, CallExpr, expr);
 
-	auto tav = ce->args[0]->tav;
+	auto tav = ce->args[0]->tav();
 	GB_ASSERT(tav.value.kind == ExactValue_String);
 	String name = tav.value.value_string;
 	return lb_addr_load(p, lb_handle_objc_find_or_register_class(p, name));
@@ -1985,7 +1985,7 @@ gb_internal lbValue lb_handle_objc_register_class(lbProcedure *p, Ast *expr) {
 	ast_node(ce, CallExpr, expr);
 	lbModule *m = p->module;
 
-	auto tav = ce->args[0]->tav;
+	auto tav = ce->args[0]->tav();
 	GB_ASSERT(tav.value.kind == ExactValue_String);
 	String name = tav.value.value_string;
 	lbAddr dst = lb_handle_objc_find_or_register_class(p, name);
@@ -2045,8 +2045,8 @@ gb_internal lbValue lb_handle_objc_send(lbProcedure *p, Ast *expr) {
 
 	lbValue id = lb_handle_objc_id(p, ce->args[1]);
 	Ast *sel_expr = ce->args[2];
-	GB_ASSERT(sel_expr->tav.value.kind == ExactValue_String);
-	lbValue sel = lb_addr_load(p, lb_handle_objc_find_or_register_selector(p, sel_expr->tav.value.value_string));
+	GB_ASSERT(sel_expr->tav().value.kind == ExactValue_String);
+	lbValue sel = lb_addr_load(p, lb_handle_objc_find_or_register_selector(p, sel_expr->tav().value.value_string));
 
 	array_add(&args, id);
 	array_add(&args, sel);

src/parser.cpp

@@ -71,6 +71,7 @@ gb_internal Ast *alloc_ast_node(AstFile *f, AstKind kind) {
 	Ast *node = cast(Ast *)gb_alloc(a, size);
 	node->kind = kind;
 	node->file_id = f ? f->id : 0;
+	node->tav_ = gb_alloc_item(a, TypeAndValue);
 
 	global_total_node_memory_allocated.fetch_add(size);
 
@@ -106,6 +107,9 @@ gb_internal Ast *clone_ast(Ast *node) {
 	AstFile *f = node->thread_safe_file();
 	Ast *n = alloc_ast_node(f, node->kind);
 	gb_memmove(n, node, ast_node_size(node->kind));
+	TypeAndValue *new_tav = gb_alloc_item(ast_allocator(f), TypeAndValue);
+	*new_tav = *node->tav_;
+	n->tav_ = new_tav;
 
 	switch (n->kind) {
 	default: GB_PANIC("Unhandled Ast %.*s", LIT(ast_strings[n->kind])); break;
@@ -650,8 +654,8 @@ gb_internal String string_value_from_token(AstFile *f, Token const &token) {
 gb_internal Ast *ast_basic_lit(AstFile *f, Token basic_lit) {
 	Ast *result = alloc_ast_node(f, Ast_BasicLit);
 	result->BasicLit.token = basic_lit;
-	result->tav.mode = Addressing_Constant;
-	result->tav.value = exact_value_from_token(f, basic_lit);
+	result->tav().mode = Addressing_Constant;
+	result->tav().value = exact_value_from_token(f, basic_lit);
 	return result;
 }
 

src/parser.hpp

@@ -754,7 +754,7 @@ struct AstCommonStuff {
 	u8           state_flags;
 	u8           viral_state_flags;
 	i32          file_id;
-	TypeAndValue tav; // TODO(bill): Make this a pointer to minimize 'Ast' size
+	TypeAndValue *tav_; // TODO(bill): Make this a pointer to minimize 'Ast' size
 };
 
 struct Ast {
@@ -762,7 +762,7 @@ struct Ast {
 	u8           state_flags;
 	u8           viral_state_flags;
 	i32          file_id;
-	TypeAndValue tav; // TODO(bill): Make this a pointer to minimize 'Ast' size
+	TypeAndValue *tav_; // TODO(bill): Make this a pointer to minimize 'Ast' size
 
 	// IMPORTANT NOTE(bill): This must be at the end since the AST is allocated to be size of the variant
 	union {
@@ -771,6 +771,9 @@ struct Ast {
 #undef AST_KIND
 	};
 	
+	gb_inline TypeAndValue &tav() const {
+		return *this->tav_;
+	}
 	
 	// NOTE(bill): I know I dislike methods but this is hopefully a temporary thing 
 	// for refactoring purposes