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refactor - codegen llvm functions lazily

master
Andrew Kelley 2017-08-25 13:13:07 -04:00
parent 629aa10c56
commit 754f7809e3
3 changed files with 91 additions and 105 deletions
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2
src/all_types.hpp
View File

@ -1242,8 +1242,6 @@ struct BuiltinFnEntry {
BuiltinFnId id;
Buf name;
size_t param_count;
uint32_t ref_count;
LLVMValueRef fn_val;
};
enum PanicMsgId {

192
src/codegen.cpp
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@ -757,6 +757,25 @@ static void gen_debug_safety_crash(CodeGen *g, PanicMsgId msg_id) {
gen_panic(g, get_panic_msg_ptr_val(g, msg_id));
}
static LLVMValueRef get_memcpy_fn_val(CodeGen *g) {
if (g->memcpy_fn_val)
return g->memcpy_fn_val;
LLVMTypeRef param_types[] = {
LLVMPointerType(LLVMInt8Type(), 0),
LLVMPointerType(LLVMInt8Type(), 0),
LLVMIntType(g->pointer_size_bytes * 8),
LLVMInt32Type(),
LLVMInt1Type(),
};
LLVMTypeRef fn_type = LLVMFunctionType(LLVMVoidType(), param_types, 5, false);
Buf *name = buf_sprintf("llvm.memcpy.p0i8.p0i8.i%d", g->pointer_size_bytes * 8);
g->memcpy_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
assert(LLVMGetIntrinsicID(g->memcpy_fn_val));
return g->memcpy_fn_val;
}
static LLVMValueRef get_safety_crash_err_fn(CodeGen *g) {
if (g->safety_crash_err_fn != nullptr)
return g->safety_crash_err_fn;
@ -840,7 +859,7 @@ static LLVMValueRef get_safety_crash_err_fn(CodeGen *g) {
LLVMConstNull(LLVMInt1Type()), // is volatile
};
LLVMBuildCall(g->builder, g->memcpy_fn_val, params, 5, "");
LLVMBuildCall(g->builder, get_memcpy_fn_val(g), params, 5, "");
LLVMValueRef const_prefix_len = LLVMConstInt(LLVMTypeOf(err_name_len), strlen(unwrap_err_msg_text), false);
LLVMValueRef full_buf_len = LLVMBuildNUWAdd(g->builder, const_prefix_len, err_name_len, "");
@ -1060,7 +1079,7 @@ static LLVMValueRef gen_struct_memcpy(CodeGen *g, LLVMValueRef src, LLVMValueRef
LLVMConstNull(LLVMInt1Type()), // is volatile
};
return LLVMBuildCall(g->builder, g->memcpy_fn_val, params, 5, "");
return LLVMBuildCall(g->builder, get_memcpy_fn_val(g), params, 5, "");
}
static LLVMValueRef gen_assign_raw(CodeGen *g, LLVMValueRef ptr, TypeTableEntry *ptr_type,
@ -1947,6 +1966,25 @@ static LLVMValueRef ir_render_bool_not(CodeGen *g, IrExecutable *executable, IrI
return LLVMBuildICmp(g->builder, LLVMIntEQ, value, zero, "");
}
static LLVMValueRef get_memset_fn_val(CodeGen *g) {
if (g->memset_fn_val)
return g->memset_fn_val;
LLVMTypeRef param_types[] = {
LLVMPointerType(LLVMInt8Type(), 0),
LLVMInt8Type(),
LLVMIntType(g->pointer_size_bytes * 8),
LLVMInt32Type(),
LLVMInt1Type(),
};
LLVMTypeRef fn_type = LLVMFunctionType(LLVMVoidType(), param_types, 5, false);
Buf *name = buf_sprintf("llvm.memset.p0i8.i%d", g->pointer_size_bytes * 8);
g->memset_fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
assert(LLVMGetIntrinsicID(g->memset_fn_val));
return g->memset_fn_val;
}
static LLVMValueRef ir_render_decl_var(CodeGen *g, IrExecutable *executable,
IrInstructionDeclVar *decl_var_instruction)
{
@ -1993,7 +2031,7 @@ static LLVMValueRef ir_render_decl_var(CodeGen *g, IrExecutable *executable,
LLVMConstNull(LLVMInt1Type()), // is volatile
};
LLVMBuildCall(g->builder, g->memset_fn_val, params, 5, "");
LLVMBuildCall(g->builder, get_memset_fn_val(g), params, 5, "");
}
}
@ -2654,7 +2692,7 @@ static LLVMValueRef ir_render_memset(CodeGen *g, IrExecutable *executable, IrIns
is_volatile,
};
LLVMBuildCall(g->builder, g->memset_fn_val, params, 5, "");
LLVMBuildCall(g->builder, get_memset_fn_val(g), params, 5, "");
return nullptr;
}
@ -2685,7 +2723,7 @@ static LLVMValueRef ir_render_memcpy(CodeGen *g, IrExecutable *executable, IrIns
is_volatile,
};
LLVMBuildCall(g->builder, g->memcpy_fn_val, params, 5, "");
LLVMBuildCall(g->builder, get_memcpy_fn_val(g), params, 5, "");
return nullptr;
}
@ -2799,23 +2837,63 @@ static LLVMValueRef ir_render_slice(CodeGen *g, IrExecutable *executable, IrInst
}
}
static LLVMValueRef get_trap_fn_val(CodeGen *g) {
if (g->trap_fn_val)
return g->trap_fn_val;
LLVMTypeRef fn_type = LLVMFunctionType(LLVMVoidType(), nullptr, 0, false);
g->trap_fn_val = LLVMAddFunction(g->module, "llvm.debugtrap", fn_type);
assert(LLVMGetIntrinsicID(g->trap_fn_val));
return g->trap_fn_val;
}
static LLVMValueRef ir_render_breakpoint(CodeGen *g, IrExecutable *executable, IrInstructionBreakpoint *instruction) {
LLVMBuildCall(g->builder, g->trap_fn_val, nullptr, 0, "");
LLVMBuildCall(g->builder, get_trap_fn_val(g), nullptr, 0, "");
return nullptr;
}
static LLVMValueRef get_return_address_fn_val(CodeGen *g) {
if (g->return_address_fn_val)
return g->return_address_fn_val;
TypeTableEntry *return_type = get_pointer_to_type(g, g->builtin_types.entry_u8, true);
LLVMTypeRef fn_type = LLVMFunctionType(return_type->type_ref,
&g->builtin_types.entry_i32->type_ref, 1, false);
g->return_address_fn_val = LLVMAddFunction(g->module, "llvm.returnaddress", fn_type);
assert(LLVMGetIntrinsicID(g->return_address_fn_val));
return g->return_address_fn_val;
}
static LLVMValueRef ir_render_return_address(CodeGen *g, IrExecutable *executable,
IrInstructionReturnAddress *instruction)
{
LLVMValueRef zero = LLVMConstNull(g->builtin_types.entry_i32->type_ref);
return LLVMBuildCall(g->builder, g->return_address_fn_val, &zero, 1, "");
return LLVMBuildCall(g->builder, get_return_address_fn_val(g), &zero, 1, "");
}
static LLVMValueRef get_frame_address_fn_val(CodeGen *g) {
if (g->frame_address_fn_val)
return g->frame_address_fn_val;
TypeTableEntry *return_type = get_pointer_to_type(g, g->builtin_types.entry_u8, true);
LLVMTypeRef fn_type = LLVMFunctionType(return_type->type_ref,
&g->builtin_types.entry_i32->type_ref, 1, false);
g->frame_address_fn_val = LLVMAddFunction(g->module, "llvm.frameaddress", fn_type);
assert(LLVMGetIntrinsicID(g->frame_address_fn_val));
return g->frame_address_fn_val;
}
static LLVMValueRef ir_render_frame_address(CodeGen *g, IrExecutable *executable,
IrInstructionFrameAddress *instruction)
{
LLVMValueRef zero = LLVMConstNull(g->builtin_types.entry_i32->type_ref);
return LLVMBuildCall(g->builder, g->frame_address_fn_val, &zero, 1, "");
return LLVMBuildCall(g->builder, get_frame_address_fn_val(g), &zero, 1, "");
}
static LLVMValueRef render_shl_with_overflow(CodeGen *g, IrInstructionOverflowOp *instruction) {
@ -3760,23 +3838,6 @@ static void render_const_val_global(CodeGen *g, ConstExprValue *const_val, const
LLVMSetInitializer(const_val->global_refs->llvm_global, const_val->global_refs->llvm_value);
}
static void delete_unused_builtin_fns(CodeGen *g) {
// TODO get rid of this function
auto it = g->builtin_fn_table.entry_iterator();
for (;;) {
auto *entry = it.next();
if (!entry)
break;
BuiltinFnEntry *builtin_fn = entry->value;
if (builtin_fn->ref_count == 0 &&
builtin_fn->fn_val)
{
LLVMDeleteFunction(entry->value->fn_val);
}
}
}
static void generate_error_name_table(CodeGen *g) {
if (g->err_name_table != nullptr || !g->generate_error_name_table || g->error_decls.length == 1) {
return;
@ -3936,7 +3997,6 @@ static void do_code_gen(CodeGen *g) {
codegen_add_time_event(g, "Code Generation");
delete_unused_builtin_fns(g);
generate_error_name_table(g);
generate_enum_name_tables(g);
@ -4528,81 +4588,11 @@ static BuiltinFnEntry *create_builtin_fn(CodeGen *g, BuiltinFnId id, const char
}
static void define_builtin_fns(CodeGen *g) {
{
// TODO make lazy and get rid of delete_unused_builtin_fns
BuiltinFnEntry *builtin_fn = create_builtin_fn(g, BuiltinFnIdBreakpoint, "breakpoint", 0);
builtin_fn->ref_count = 1;
LLVMTypeRef fn_type = LLVMFunctionType(LLVMVoidType(), nullptr, 0, false);
builtin_fn->fn_val = LLVMAddFunction(g->module, "llvm.debugtrap", fn_type);
assert(LLVMGetIntrinsicID(builtin_fn->fn_val));
g->trap_fn_val = builtin_fn->fn_val;
}
{
// TODO make lazy and get rid of delete_unused_builtin_fns
BuiltinFnEntry *builtin_fn = create_builtin_fn(g, BuiltinFnIdReturnAddress,
"returnAddress", 0);
TypeTableEntry *return_type = get_pointer_to_type(g, g->builtin_types.entry_u8, true);
LLVMTypeRef fn_type = LLVMFunctionType(return_type->type_ref,
&g->builtin_types.entry_i32->type_ref, 1, false);
builtin_fn->fn_val = LLVMAddFunction(g->module, "llvm.returnaddress", fn_type);
assert(LLVMGetIntrinsicID(builtin_fn->fn_val));
g->return_address_fn_val = builtin_fn->fn_val;
}
{
// TODO make lazy and get rid of delete_unused_builtin_fns
BuiltinFnEntry *builtin_fn = create_builtin_fn(g, BuiltinFnIdFrameAddress,
"frameAddress", 0);
TypeTableEntry *return_type = get_pointer_to_type(g, g->builtin_types.entry_u8, true);
LLVMTypeRef fn_type = LLVMFunctionType(return_type->type_ref,
&g->builtin_types.entry_i32->type_ref, 1, false);
builtin_fn->fn_val = LLVMAddFunction(g->module, "llvm.frameaddress", fn_type);
assert(LLVMGetIntrinsicID(builtin_fn->fn_val));
g->frame_address_fn_val = builtin_fn->fn_val;
}
{
// TODO make lazy and get rid of delete_unused_builtin_fns
BuiltinFnEntry *builtin_fn = create_builtin_fn(g, BuiltinFnIdMemcpy, "memcpy", 3);
builtin_fn->ref_count = 1;
LLVMTypeRef param_types[] = {
LLVMPointerType(LLVMInt8Type(), 0),
LLVMPointerType(LLVMInt8Type(), 0),
LLVMIntType(g->pointer_size_bytes * 8),
LLVMInt32Type(),
LLVMInt1Type(),
};
LLVMTypeRef fn_type = LLVMFunctionType(LLVMVoidType(), param_types, 5, false);
Buf *name = buf_sprintf("llvm.memcpy.p0i8.p0i8.i%d", g->pointer_size_bytes * 8);
builtin_fn->fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
assert(LLVMGetIntrinsicID(builtin_fn->fn_val));
g->memcpy_fn_val = builtin_fn->fn_val;
}
{
// TODO make lazy and get rid of delete_unused_builtin_fns
BuiltinFnEntry *builtin_fn = create_builtin_fn(g, BuiltinFnIdMemset, "memset", 3);
builtin_fn->ref_count = 1;
LLVMTypeRef param_types[] = {
LLVMPointerType(LLVMInt8Type(), 0),
LLVMInt8Type(),
LLVMIntType(g->pointer_size_bytes * 8),
LLVMInt32Type(),
LLVMInt1Type(),
};
LLVMTypeRef fn_type = LLVMFunctionType(LLVMVoidType(), param_types, 5, false);
Buf *name = buf_sprintf("llvm.memset.p0i8.i%d", g->pointer_size_bytes * 8);
builtin_fn->fn_val = LLVMAddFunction(g->module, buf_ptr(name), fn_type);
assert(LLVMGetIntrinsicID(builtin_fn->fn_val));
g->memset_fn_val = builtin_fn->fn_val;
}
create_builtin_fn(g, BuiltinFnIdBreakpoint, "breakpoint", 0);
create_builtin_fn(g, BuiltinFnIdReturnAddress, "returnAddress", 0);
create_builtin_fn(g, BuiltinFnIdFrameAddress, "frameAddress", 0);
create_builtin_fn(g, BuiltinFnIdMemcpy, "memcpy", 3);
create_builtin_fn(g, BuiltinFnIdMemset, "memset", 3);
create_builtin_fn(g, BuiltinFnIdSizeof, "sizeOf", 1);
create_builtin_fn(g, BuiltinFnIdAlignof, "alignOf", 1);
create_builtin_fn(g, BuiltinFnIdMaxValue, "maxValue", 1);

2
src/ir.cpp
View File

@ -3889,8 +3889,6 @@ static IrInstruction *ir_gen_builtin_fn_call(IrBuilder *irb, Scope *scope, AstNo
return irb->codegen->invalid_instruction;
}
builtin_fn->ref_count += 1;
switch (builtin_fn->id) {
case BuiltinFnIdInvalid:
zig_unreachable();