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Add union #maybe

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This commit is contained in:
gingerBill
2020-02-01 11:10:28 +00:00
parent 4bcb667e97
commit 0f399a7294
10 changed files with 244 additions and 66 deletions
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src/ir_print.cpp
+28 -4
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@@ -508,13 +508,25 @@ void ir_print_type(irFileBuffer *f, irModule *m, Type *t, bool in_struct) {
// NOTE(bill): The zero size array is used to fix the alignment used in a structure as
// LLVM takes the first element's alignment as the entire alignment (like C)
i64 align = type_align_of(t);
if (is_type_union_maybe_pointer_original_alignment(t)) {
ir_write_byte(f, '{');
ir_print_type(f, m, t->Union.variants[0]);
ir_write_byte(f, '}');
return;
}
i64 block_size = t->Union.variant_block_size;
ir_write_byte(f, '{');
ir_print_alignment_prefix_hack(f, align);
ir_fprintf(f, ", [%lld x i8], ", block_size);
// ir_print_type(f, m, t_type_info_ptr);
ir_print_type(f, m, union_tag_type(t));
if (is_type_union_maybe_pointer(t)) {
ir_fprintf(f, ", ");
ir_print_type(f, m, t->Union.variants[0]);
} else {
ir_fprintf(f, ", [%lld x i8], ", block_size);
ir_print_type(f, m, union_tag_type(t));
}
ir_write_byte(f, '}');
}
return;
@@ -1850,6 +1862,12 @@ void ir_print_instr(irFileBuffer *f, irModule *m, irValue *value) {
case irInstr_UnionTagPtr: {
Type *et = ir_type(instr->UnionTagPtr.address);
Type *ut = type_deref(et);
if (is_type_union_maybe_pointer(ut)) {
GB_PANIC("union #maybe UnionTagPtr");
}
ir_fprintf(f, "%%%d = getelementptr inbounds ", value->index);
Type *t = base_type(type_deref(et));
GB_ASSERT(is_type_union(t));
@@ -1869,10 +1887,16 @@ void ir_print_instr(irFileBuffer *f, irModule *m, irValue *value) {
case irInstr_UnionTagValue: {
Type *et = ir_type(instr->UnionTagValue.address);
ir_fprintf(f, "%%%d = extractvalue ", value->index);
Type *t = base_type(et);
if (is_type_union_maybe_pointer(t)) {
GB_PANIC("union #maybe UnionTagValue");
}
ir_fprintf(f, "%%%d = extractvalue ", value->index);
GB_ASSERT(is_type_union(t));
ir_print_type(f, m, et);
ir_write_byte(f, ' ');
ir_print_value(f, m, instr->UnionTagValue.address, et);