motiejus/zig
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introduce copyable concept

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closes #103
This commit is contained in:
Andrew Kelley
2017-03-26 03:39:18 -04:00
parent 5c04730534
commit 7c53230a61
13 changed files with 115 additions and 65 deletions
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21
src/codegen.cpp
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@@ -261,6 +261,13 @@ static void addLLVMArgAttr(LLVMValueRef arg_val, unsigned param_index, const cha
return addLLVMAttr(arg_val, param_index + 1, attr_name);
}
static void addLLVMCallsiteAttr(LLVMValueRef call_instr, unsigned param_index, const char *attr_name) {
unsigned kind_id = LLVMGetEnumAttributeKindForName(attr_name, strlen(attr_name));
assert(kind_id != 0);
LLVMAttributeRef llvm_attr = LLVMCreateEnumAttribute(LLVMGetGlobalContext(), kind_id, 0);
LLVMAddCallSiteAttribute(call_instr, param_index + 1, llvm_attr);
}
static Buf *get_mangled_name(CodeGen *g, Buf *original_name, bool external_linkage) {
if (external_linkage || g->external_symbol_names.maybe_get(original_name) == nullptr) {
return original_name;
@@ -1578,11 +1585,12 @@ static LLVMValueRef ir_render_call(CodeGen *g, IrExecutable *executable, IrInstr
fn_type = instruction->fn_ref->value.type;
}
TypeTableEntry *src_return_type = fn_type->data.fn.fn_type_id.return_type;
FnTypeId *fn_type_id = &fn_type->data.fn.fn_type_id;
TypeTableEntry *src_return_type = fn_type_id->return_type;
bool ret_has_bits = type_has_bits(src_return_type);
bool first_arg_ret = ret_has_bits && handle_is_ptr(src_return_type);
size_t actual_param_count = instruction->arg_count + (first_arg_ret ? 1 : 0);
bool is_var_args = fn_type->data.fn.fn_type_id.is_var_args;
bool is_var_args = fn_type_id->is_var_args;
LLVMValueRef *gen_param_values = allocate<LLVMValueRef>(actual_param_count);
size_t gen_param_index = 0;
if (first_arg_ret) {
@@ -1603,6 +1611,13 @@ static LLVMValueRef ir_render_call(CodeGen *g, IrExecutable *executable, IrInstr
LLVMValueRef result = ZigLLVMBuildCall(g->builder, fn_val,
gen_param_values, gen_param_index, fn_type->data.fn.calling_convention, "");
for (size_t param_i = 0; param_i < fn_type_id->param_count; param_i += 1) {
FnGenParamInfo *gen_info = &fn_type->data.fn.gen_param_info[param_i];
if (gen_info->is_byval) {
addLLVMCallsiteAttr(result, gen_info->gen_index, "byval");
}
}
if (src_return_type->id == TypeTableEntryIdUnreachable) {
return LLVMBuildUnreachable(g->builder);
} else if (!ret_has_bits) {
@@ -3376,7 +3391,7 @@ static void do_code_gen(CodeGen *g) {
addLLVMArgAttr(fn_val, gen_index, "nonnull");
}
if (is_byval) {
// TODO add byval attr?
addLLVMArgAttr(fn_val, gen_index, "byval");
}
}