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Call convention, pass by pointer: pointers are 16 byte aligned

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Ginger Bill
2017-04-16 10:54:05 +01:00
parent 0d7bf58b60
commit b4a339f2e3
2 changed files with 17 additions and 6 deletions
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17
src/ir.c
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@@ -147,10 +147,11 @@ struct irProcedure {
#define IR_INSTR_KINDS \
IR_INSTR_KIND(Comment, struct { String text; }) \
IR_INSTR_KIND(Local, struct { \
Entity * entity; \
Type * type; \
bool zero_initialized; \
Entity * entity; \
Type * type; \
bool zero_initialized; \
irValueArray referrers; \
i64 alignment; \
}) \
IR_INSTR_KIND(ZeroInit, struct { irValue *address; }) \
IR_INSTR_KIND(Store, struct { irValue *address, *value; }) \
@@ -812,6 +813,7 @@ irValue *ir_instr_local(irProcedure *p, Entity *e, bool zero_initialized) {
i->Local.entity = e;
i->Local.type = make_type_pointer(p->module->allocator, e->type);
i->Local.zero_initialized = zero_initialized;
i->Local.alignment = type_align_of(p->module->allocator, e->type);
array_init(&i->Local.referrers, heap_allocator()); // TODO(bill): Replace heap allocator here
ir_module_add_value(p->module, e, v);
return v;
@@ -1418,9 +1420,14 @@ irValue *ir_emit_comment(irProcedure *p, String text) {
return ir_emit(p, ir_instr_comment(p, text));
}
irValue *ir_copy_value_to_ptr(irProcedure *proc, irValue *val) {
irValue *ir_copy_value_to_ptr(irProcedure *proc, irValue *val, i64 alignment) {
Type *t = ir_type(val);
i64 type_alignment = type_align_of(proc->module->allocator, t);
if (alignment < type_alignment) {
alignment = type_alignment;
}
irValue *ptr = ir_add_local_generated(proc, t);
ptr->Instr.Local.alignment = alignment;
ir_emit_store(proc, ptr, val);
return ptr;
}
@@ -1441,7 +1448,7 @@ irValue *ir_emit_call(irProcedure *p, irValue *value, irValue **args, isize arg_
Type *new_type = pt->Proc.abi_compat_params[i];
if (original_type != new_type) {
if (is_type_pointer(new_type)) {
args[i] = ir_copy_value_to_ptr(p, args[i]);
args[i] = ir_copy_value_to_ptr(p, args[i], 16);
} else if (is_type_integer(new_type)) {
args[i] = ir_emit_bitcast(p, args[i], new_type);
}

6
src/ir_print.c
View File

@@ -728,9 +728,13 @@ void ir_print_instr(irFileBuffer *f, irModule *m, irValue *value) {
case irInstr_Local: {
Type *type = instr->Local.entity->type;
i64 align = instr->Local.alignment;
if (align <= 0) {
align = type_align_of(m->allocator, type);
}
ir_fprintf(f, "%%%d = alloca ", value->index);
ir_print_type(f, m, type);
ir_fprintf(f, ", align %lld\n", type_align_of(m->allocator, type));
ir_fprintf(f, ", align %lld\n", align);
} break;
case irInstr_ZeroInit: {