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Fix alignment issues with vectors, unions, and raw_unions

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Ginger Bill
2016-11-16 12:36:02 +00:00
parent 0cab083b8f
commit e2d98324ba
6 changed files with 133 additions and 50 deletions
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src/ssa_print.cpp
+39 -5
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@@ -212,12 +212,19 @@ void ssa_print_type(ssaFileBuffer *f, ssaModule *m, Type *t) {
}
break;
case TypeRecord_Union: {
i64 size_of_union = type_size_of(s, heap_allocator(), t) - s.word_size;
ssa_fprintf(f, "{[%lld x i8], i%lld}", size_of_union, word_bits);
// 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 size_of_union = type_size_of(s, heap_allocator(), t) - s.word_size;
i64 align_of_union = type_align_of(s, heap_allocator(), t);
ssa_fprintf(f, "{[0 x <%lld x i8>], [%lld x i8], i%lld}", align_of_union, size_of_union, word_bits);
} break;
case TypeRecord_RawUnion: {
// 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 size_of_union = type_size_of(s, heap_allocator(), t);
i64 align_of_union = type_align_of(s, heap_allocator(), t);
ssa_fprintf(f, "{[0 x <%lld x i8>], [%lld x i8]}", align_of_union, size_of_union);
} break;
case TypeRecord_RawUnion:
ssa_fprintf(f, "[%lld x i8]", type_size_of(s, heap_allocator(), t));
break;
case TypeRecord_Enum:
ssa_print_type(f, m, t->Record.enum_base);
break;
@@ -748,6 +755,33 @@ void ssa_print_instr(ssaFileBuffer *f, ssaModule *m, ssaValue *value) {
ssa_fprintf(f, ", %d\n", instr->StructExtractValue.index);
} break;
case ssaInstr_UnionTagPtr: {
Type *et = ssa_type(instr->UnionTagPtr.address);
ssa_fprintf(f, "%%%d = getelementptr inbounds ", value->index);
ssa_print_type(f, m, type_deref(et));
ssa_fprintf(f, ", ");
ssa_print_type(f, m, et);
ssa_fprintf(f, " ");
ssa_print_value(f, m, instr->UnionTagPtr.address, et);
ssa_fprintf(f, ", ");
ssa_print_type(f, m, t_int);
ssa_fprintf(f, " 0, ");
ssa_print_type(f, m, t_i32);
ssa_fprintf(f, " %d", 2);
ssa_fprintf(f, "\n");
} break;
case ssaInstr_UnionTagValue: {
Type *et = ssa_type(instr->UnionTagValue.address);
ssa_fprintf(f, "%%%d = extractvalue ", value->index);
ssa_print_type(f, m, et);
ssa_fprintf(f, " ");
ssa_print_value(f, m, instr->UnionTagValue.address, et);
ssa_fprintf(f, ", %d\n", 2);
} break;
case ssaInstr_Jump: {;
ssa_fprintf(f, "br label %%");
ssa_print_block_name(f, instr->Jump.block);