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Default struct field values

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This commit is contained in:
Ginger Bill
2017-07-18 14:56:07 +01:00
parent f7d8ba408c
commit 193c7c82c8
4 changed files with 277 additions and 69 deletions
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src/ir_print.cpp
+102 -37
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@@ -506,14 +506,22 @@ void ir_print_exact_value(irFileBuffer *f, irModule *m, ExactValue value, Type *
type = base_type(type);
if (is_type_array(type)) {
ast_node(cl, CompoundLit, value.value_compound);
Type *elem_type = type->Array.elem;
isize elem_count = cl->elems.count;
bool has_defaults = ir_type_has_default_values(type);
if (elem_count == 0) {
ir_fprintf(f, "zeroinitializer");
if (!has_defaults) {
ir_fprintf(f, "zeroinitializer");
} else {
ir_fprintf(f, "[");
ir_fprintf(f, "]");
}
break;
}
ir_fprintf(f, "[");
Type *elem_type = type->Array.elem;
for (isize i = 0; i < elem_count; i++) {
if (i > 0) {
@@ -575,7 +583,8 @@ void ir_print_exact_value(irFileBuffer *f, irModule *m, ExactValue value, Type *
ast_node(cl, CompoundLit, value.value_compound);
if (cl->elems.count == 0) {
bool has_defaults = ir_type_has_default_values(type);
if (cl->elems.count == 0 && !has_defaults) {
ir_fprintf(f, "zeroinitializer");
break;
}
@@ -583,39 +592,51 @@ void ir_print_exact_value(irFileBuffer *f, irModule *m, ExactValue value, Type *
isize value_count = type->Record.field_count;
ExactValue *values = gb_alloc_array(m->tmp_allocator, ExactValue, value_count);
bool *visited = gb_alloc_array(m->tmp_allocator, bool, value_count);
if (cl->elems.count > 0) {
if (cl->elems[0]->kind == AstNode_FieldValue) {
isize elem_count = cl->elems.count;
for (isize i = 0; i < elem_count; i++) {
ast_node(fv, FieldValue, cl->elems[i]);
String name = fv->field->Ident.token.string;
if (cl->elems[0]->kind == AstNode_FieldValue) {
isize elem_count = cl->elems.count;
for (isize i = 0; i < elem_count; i++) {
ast_node(fv, FieldValue, cl->elems[i]);
String name = fv->field->Ident.token.string;
TypeAndValue tav = type_and_value_of_expr(m->info, fv->value);
GB_ASSERT(tav.mode != Addressing_Invalid);
TypeAndValue tav = type_and_value_of_expr(m->info, fv->value);
GB_ASSERT(tav.mode != Addressing_Invalid);
Selection sel = lookup_field(m->allocator, type, name, false);
Entity *f = type->Record.fields[sel.index[0]];
Selection sel = lookup_field(m->allocator, type, name, false);
Entity *f = type->Record.fields[sel.index[0]];
values[f->Variable.field_index] = tav.value;
}
} else {
for (isize i = 0; i < value_count; i++) {
Entity *f = type->Record.fields_in_src_order[i];
TypeAndValue tav = type_and_value_of_expr(m->info, cl->elems[i]);
ExactValue val = {};
if (tav.mode != Addressing_Invalid) {
val = tav.value;
values[f->Variable.field_index] = tav.value;
visited[f->Variable.field_index] = true;
}
} else {
for (isize i = 0; i < value_count; i++) {
Entity *f = type->Record.fields[i];
TypeAndValue tav = type_and_value_of_expr(m->info, cl->elems[i]);
ExactValue val = {};
if (tav.mode != Addressing_Invalid) {
val = tav.value;
}
values[f->Variable.field_index] = val;
visited[f->Variable.field_index] = true;
}
values[f->Variable.field_index] = val;
}
}
if (type->Record.is_packed) {
ir_fprintf(f, "<");
for (isize i = 0; i < value_count; i++) {
if (visited[i]) continue;
Entity *f = type->Record.fields[i];
ExactValue v = {};
if (!f->Variable.default_is_nil) {
v = f->Variable.default_value;
}
values[i] = v;
}
if (type->Record.is_packed) ir_fprintf(f, "<");
ir_fprintf(f, "{");
if (type->Record.custom_align > 0) {
ir_fprintf(f, "[0 x <%lld x i8>] zeroinitializer", cast(i64)type->Record.custom_align);
@@ -626,9 +647,7 @@ void ir_print_exact_value(irFileBuffer *f, irModule *m, ExactValue value, Type *
for (isize i = 0; i < value_count; i++) {
if (i > 0) {
ir_fprintf(f, ", ");
}
if (i > 0) ir_fprintf(f, ", ");
Type *elem_type = type->Record.fields[i]->type;
ir_print_compound_element(f, m, values[i], elem_type);
@@ -636,9 +655,7 @@ void ir_print_exact_value(irFileBuffer *f, irModule *m, ExactValue value, Type *
ir_fprintf(f, "}");
if (type->Record.is_packed) {
ir_fprintf(f, ">");
}
if (type->Record.is_packed) ir_fprintf(f, ">");
gb_temp_arena_memory_end(tmp);
} else {
@@ -647,10 +664,56 @@ void ir_print_exact_value(irFileBuffer *f, irModule *m, ExactValue value, Type *
} break;
default:
ir_fprintf(f, "zeroinitializer");
default: {
bool has_defaults = ir_type_has_default_values(type);
if (!has_defaults) {
ir_fprintf(f, "zeroinitializer");
} else {
if (is_type_struct(type)) {
i32 value_count = type->Record.field_count;
if (type->Record.is_packed) ir_fprintf(f, "<");
ir_fprintf(f, "{");
if (type->Record.custom_align > 0) {
ir_fprintf(f, "[0 x <%lld x i8>] zeroinitializer", cast(i64)type->Record.custom_align);
if (value_count > 0) {
ir_fprintf(f, ", ");
}
}
for (isize i = 0; i < value_count; i++) {
if (i > 0) ir_fprintf(f, ", ");
Entity *field = type->Record.fields[i];
ExactValue value = {};
if (!field->Variable.default_is_nil) {
value = field->Variable.default_value;
}
ir_print_compound_element(f, m, value, field->type);
}
ir_fprintf(f, "}");
if (type->Record.is_packed) ir_fprintf(f, ">");
} else if (is_type_array(type)) {
i64 count = type->Array.count;
if (count == 0) {
ir_fprintf(f, "zeroinitializer");
} else {
Type *elem = type->Array.elem;
ir_fprintf(f, "[");
for (i64 i = 0; i < count; i++) {
if (i > 0) ir_fprintf(f, ", ");
ir_print_type(f, m, elem);
ir_fprintf(f, " ");
ir_print_exact_value(f, m, empty_exact_value, elem);
}
ir_fprintf(f, "]");
}
} else {
GB_PANIC("Unknown type for default values");
}
}
// GB_PANIC("Invalid ExactValue: %d", value.kind);
break;
} break;
}
}
@@ -796,7 +859,9 @@ void ir_print_instr(irFileBuffer *f, irModule *m, irValue *value) {
Type *type = type_deref(ir_type(instr->ZeroInit.address));
ir_fprintf(f, "store ");
ir_print_type(f, m, type);
ir_fprintf(f, " zeroinitializer, ");
ir_fprintf(f, " ");
ir_print_exact_value(f, m, empty_exact_value, type);
ir_fprintf(f, ", ");
ir_print_type(f, m, type);
ir_fprintf(f, "* %%%d\n", instr->ZeroInit.address->index);
} break;