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Track allocated nodes using a G-machine struct in compiler series.

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This commit is contained in:
Danila Fedorin 2020-02-06 10:05:17 -08:00
parent 153349f3d5
commit 281dbbd174
5 changed files with 163 additions and 93 deletions
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8
code/compiler/09/instruction.cpp
View File

@ -15,7 +15,7 @@ void instruction_pushint::print(int indent, std::ostream& to) const {
}
void instruction_pushint::gen_llvm(llvm_context& ctx, Function* f) const {
ctx.create_push(f, ctx.create_num(ctx.create_i32(value)));
ctx.create_push(f, ctx.create_num(f, ctx.create_i32(value)));
}
void instruction_pushglobal::print(int indent, std::ostream& to) const {
@ -26,7 +26,7 @@ void instruction_pushglobal::print(int indent, std::ostream& to) const {
void instruction_pushglobal::gen_llvm(llvm_context& ctx, Function* f) const {
auto& global_f = ctx.custom_functions.at("f_" + name);
auto arity = ctx.create_i32(global_f->arity);
ctx.create_push(f, ctx.create_global(global_f->function, arity));
ctx.create_push(f, ctx.create_global(f, global_f->function, arity));
}
void instruction_push::print(int indent, std::ostream& to) const {
@ -55,7 +55,7 @@ void instruction_mkapp::print(int indent, std::ostream& to) const {
void instruction_mkapp::gen_llvm(llvm_context& ctx, Function* f) const {
auto left = ctx.create_pop(f);
auto right = ctx.create_pop(f);
ctx.create_push(f, ctx.create_app(left, right));
ctx.create_push(f, ctx.create_app(f, left, right));
}
void instruction_update::print(int indent, std::ostream& to) const {
@ -146,7 +146,7 @@ void instruction_binop::gen_llvm(llvm_context& ctx, Function* f) const {
case TIMES: result = ctx.builder.CreateMul(left_int, right_int); break;
case DIVIDE: result = ctx.builder.CreateSDiv(left_int, right_int); break;
}
ctx.create_push(f, ctx.create_num(result));
ctx.create_push(f, ctx.create_num(f, result));
}
void instruction_eval::print(int indent, std::ostream& to) const {

100
code/compiler/09/llvm_context.cpp
View File

@ -5,7 +5,9 @@ using namespace llvm;
void llvm_context::create_types() {
stack_type = StructType::create(ctx, "stack");
gmachine_type = StructType::create(ctx, "gmachine");
stack_ptr_type = PointerType::getUnqual(stack_type);
gmachine_ptr_type = PointerType::getUnqual(gmachine_type);
tag_type = IntegerType::getInt8Ty(ctx);
struct_types["node_base"] = StructType::create(ctx, "node_base");
struct_types["node_app"] = StructType::create(ctx, "node_app");
@ -14,10 +16,16 @@ void llvm_context::create_types() {
struct_types["node_ind"] = StructType::create(ctx, "node_ind");
struct_types["node_data"] = StructType::create(ctx, "node_data");
node_ptr_type = PointerType::getUnqual(struct_types.at("node_base"));
function_type = FunctionType::get(Type::getVoidTy(ctx), { stack_ptr_type }, false);
function_type = FunctionType::get(Type::getVoidTy(ctx), { gmachine_ptr_type }, false);
gmachine_type->setBody(
stack_ptr_type,
node_ptr_type
);
struct_types.at("node_base")->setBody(
IntegerType::getInt32Ty(ctx)
IntegerType::getInt32Ty(ctx),
IntegerType::getInt8Ty(ctx),
node_ptr_type
);
struct_types.at("node_app")->setBody(
struct_types.at("node_base"),
@ -82,34 +90,40 @@ void llvm_context::create_functions() {
"stack_popn",
&module
);
functions["stack_slide"] = Function::Create(
FunctionType::get(void_type, { stack_ptr_type, sizet_type }, false),
functions["gmachine_slide"] = Function::Create(
FunctionType::get(void_type, { gmachine_ptr_type, sizet_type }, false),
Function::LinkageTypes::ExternalLinkage,
"stack_slide",
"gmachine_slide",
&module
);
functions["stack_update"] = Function::Create(
FunctionType::get(void_type, { stack_ptr_type, sizet_type }, false),
functions["gmachine_update"] = Function::Create(
FunctionType::get(void_type, { gmachine_ptr_type, sizet_type }, false),
Function::LinkageTypes::ExternalLinkage,
"stack_update",
"gmachine_update",
&module
);
functions["stack_alloc"] = Function::Create(
FunctionType::get(void_type, { stack_ptr_type, sizet_type }, false),
functions["gmachine_alloc"] = Function::Create(
FunctionType::get(void_type, { gmachine_ptr_type, sizet_type }, false),
Function::LinkageTypes::ExternalLinkage,
"stack_alloc",
"gmachine_alloc",
&module
);
functions["stack_pack"] = Function::Create(
FunctionType::get(void_type, { stack_ptr_type, sizet_type, tag_type }, false),
functions["gmachine_pack"] = Function::Create(
FunctionType::get(void_type, { gmachine_ptr_type, sizet_type, tag_type }, false),
Function::LinkageTypes::ExternalLinkage,
"stack_pack",
"gmachine_pack",
&module
);
functions["stack_split"] = Function::Create(
FunctionType::get(node_ptr_type, { stack_ptr_type, sizet_type }, false),
functions["gmachine_split"] = Function::Create(
FunctionType::get(void_type, { gmachine_ptr_type, sizet_type }, false),
Function::LinkageTypes::ExternalLinkage,
"stack_split",
"gmachine_split",
&module
);
functions["gmachine_track"] = Function::Create(
FunctionType::get(node_ptr_type, { gmachine_ptr_type, node_ptr_type }, false),
Function::LinkageTypes::ExternalLinkage,
"gmachine_track",
&module
);
@ -139,14 +153,8 @@ void llvm_context::create_functions() {
&module
);
functions["eval"] = Function::Create(
FunctionType::get(node_ptr_type, { node_ptr_type }, false),
Function::LinkageTypes::ExternalLinkage,
"eval",
&module
);
functions["unwind"] = Function::Create(
FunctionType::get(void_type, { stack_ptr_type }, false),
FunctionType::get(void_type, { gmachine_ptr_type }, false),
Function::LinkageTypes::ExternalLinkage,
"unwind",
&module
@ -165,40 +173,44 @@ ConstantInt* llvm_context::create_size(size_t i) {
Value* llvm_context::create_pop(Function* f) {
auto pop_f = functions.at("stack_pop");
return builder.CreateCall(pop_f, { f->arg_begin() });
return builder.CreateCall(pop_f, { unwrap_gmachine_stack_ptr(f->arg_begin()) });
}
Value* llvm_context::create_peek(Function* f, Value* off) {
auto peek_f = functions.at("stack_peek");
return builder.CreateCall(peek_f, { f->arg_begin(), off });
return builder.CreateCall(peek_f, { unwrap_gmachine_stack_ptr(f->arg_begin()), off });
}
void llvm_context::create_push(Function* f, Value* v) {
auto push_f = functions.at("stack_push");
builder.CreateCall(push_f, { f->arg_begin(), v });
builder.CreateCall(push_f, { unwrap_gmachine_stack_ptr(f->arg_begin()), v });
}
void llvm_context::create_popn(Function* f, Value* off) {
auto popn_f = functions.at("stack_popn");
builder.CreateCall(popn_f, { f->arg_begin(), off });
builder.CreateCall(popn_f, { unwrap_gmachine_stack_ptr(f->arg_begin()), off });
}
void llvm_context::create_update(Function* f, Value* off) {
auto update_f = functions.at("stack_update");
auto update_f = functions.at("gmachine_update");
builder.CreateCall(update_f, { f->arg_begin(), off });
}
void llvm_context::create_pack(Function* f, Value* c, Value* t) {
auto pack_f = functions.at("stack_pack");
auto pack_f = functions.at("gmachine_pack");
builder.CreateCall(pack_f, { f->arg_begin(), c, t });
}
void llvm_context::create_split(Function* f, Value* c) {
auto split_f = functions.at("stack_split");
auto split_f = functions.at("gmachine_split");
builder.CreateCall(split_f, { f->arg_begin(), c });
}
void llvm_context::create_slide(Function* f, Value* off) {
auto slide_f = functions.at("stack_slide");
auto slide_f = functions.at("gmachine_slide");
builder.CreateCall(slide_f, { f->arg_begin(), off });
}
void llvm_context::create_alloc(Function* f, Value* n) {
auto alloc_f = functions.at("stack_alloc");
auto alloc_f = functions.at("gmachine_alloc");
builder.CreateCall(alloc_f, { f->arg_begin(), n });
}
Value* llvm_context::create_track(Function* f, Value* v) {
auto track_f = functions.at("gmachine_track");
return builder.CreateCall(track_f, { f->arg_begin(), v });
}
Value* llvm_context::create_eval(Value* e) {
auto eval_f = functions.at("eval");
@ -210,6 +222,11 @@ void llvm_context::create_unwind(Function* f) {
builder.CreateCall(unwind_f, { f->args().begin() });
}
Value* llvm_context::unwrap_gmachine_stack_ptr(Value* g) {
auto offset_0 = create_i32(0);
return builder.CreateGEP(g, { offset_0, offset_0 });
}
Value* llvm_context::unwrap_num(Value* v) {
auto num_ptr_type = PointerType::getUnqual(struct_types.at("node_num"));
auto cast = builder.CreatePointerCast(v, num_ptr_type);
@ -218,9 +235,10 @@ Value* llvm_context::unwrap_num(Value* v) {
auto int_ptr = builder.CreateGEP(cast, { offset_0, offset_1 });
return builder.CreateLoad(int_ptr);
}
Value* llvm_context::create_num(Value* v) {
Value* llvm_context::create_num(Function* f, Value* v) {
auto alloc_num_f = functions.at("alloc_num");
return builder.CreateCall(alloc_num_f, { v });
auto alloc_num_call = builder.CreateCall(alloc_num_f, { v });
return create_track(f, alloc_num_call);
}
Value* llvm_context::unwrap_data_tag(Value* v) {
@ -232,20 +250,20 @@ Value* llvm_context::unwrap_data_tag(Value* v) {
return builder.CreateLoad(tag_ptr);
}
Value* llvm_context::create_global(Value* f, Value* a) {
Value* llvm_context::create_global(Function* f, Value* gf, Value* a) {
auto alloc_global_f = functions.at("alloc_global");
return builder.CreateCall(alloc_global_f, { f, a });
auto alloc_global_call = builder.CreateCall(alloc_global_f, { gf, a });
return create_track(f, alloc_global_call);
}
Value* llvm_context::create_app(Value* l, Value* r) {
Value* llvm_context::create_app(Function* f, Value* l, Value* r) {
auto alloc_app_f = functions.at("alloc_app");
return builder.CreateCall(alloc_app_f, { l, r });
auto alloc_app_call = builder.CreateCall(alloc_app_f, { l, r });
return create_track(f, alloc_app_call);
}
llvm::Function* llvm_context::create_custom_function(std::string name, int32_t arity) {
auto void_type = llvm::Type::getVoidTy(ctx);
auto function_type =
llvm::FunctionType::get(void_type, { stack_ptr_type }, false);
auto new_function = llvm::Function::Create(
function_type,
llvm::Function::LinkageTypes::ExternalLinkage,

12
code/compiler/09/llvm_context.hpp
View File

@ -4,6 +4,7 @@
#include <llvm/IR/LLVMContext.h>
#include <llvm/IR/IRBuilder.h>
#include <llvm/IR/Module.h>
#include <llvm/IR/Value.h>
#include <map>
struct llvm_context {
@ -23,7 +24,9 @@ struct llvm_context {
std::map<std::string, llvm::StructType*> struct_types;
llvm::StructType* stack_type;
llvm::StructType* gmachine_type;
llvm::PointerType* stack_ptr_type;
llvm::PointerType* gmachine_ptr_type;
llvm::PointerType* node_ptr_type;
llvm::IntegerType* tag_type;
llvm::FunctionType* function_type;
@ -50,18 +53,21 @@ struct llvm_context {
void create_split(llvm::Function*, llvm::Value*);
void create_slide(llvm::Function*, llvm::Value*);
void create_alloc(llvm::Function*, llvm::Value*);
llvm::Value* create_track(llvm::Function*, llvm::Value*);
llvm::Value* create_eval(llvm::Value*);
void create_unwind(llvm::Function*);
llvm::Value* unwrap_gmachine_stack_ptr(llvm::Value*);
llvm::Value* unwrap_num(llvm::Value*);
llvm::Value* create_num(llvm::Value*);
llvm::Value* create_num(llvm::Function*, llvm::Value*);
llvm::Value* unwrap_data_tag(llvm::Value*);
llvm::Value* create_global(llvm::Value*, llvm::Value*);
llvm::Value* create_global(llvm::Function*, llvm::Value*, llvm::Value*);
llvm::Value* create_app(llvm::Value*, llvm::Value*);
llvm::Value* create_app(llvm::Function*, llvm::Value*, llvm::Value*);
llvm::Function* create_custom_function(std::string name, int32_t arity);
};

101
code/compiler/09/runtime.c
View File

@ -25,7 +25,7 @@ struct node_num* alloc_num(int32_t n) {
return node;
}
struct node_global* alloc_global(void (*f)(struct stack*), int32_t a) {
struct node_global* alloc_global(void (*f)(struct gmachine*), int32_t a) {
struct node_global* node = (struct node_global*) alloc_node();
node->base.tag = NODE_GLOBAL;
node->arity = a;
@ -40,6 +40,12 @@ struct node_ind* alloc_ind(struct node_base* n) {
return node;
}
void free_node_direct(struct node_base* n) {
if(n->tag == NODE_DATA) {
free(((struct node_data*) n)->array);
}
}
void stack_init(struct stack* s) {
s->size = 4;
s->count = 0;
@ -74,49 +80,81 @@ void stack_popn(struct stack* s, size_t n) {
s->count -= n;
}
void stack_slide(struct stack* s, size_t n) {
assert(s->count > n);
s->data[s->count - n - 1] = s->data[s->count - 1];
s->count -= n;
void gmachine_init(struct gmachine* g) {
stack_init(&g->stack);
g->nodes = NULL;
}
void stack_update(struct stack* s, size_t o) {
assert(s->count > o + 1);
struct node_ind* ind = (struct node_ind*) s->data[s->count - o - 2];
void gmachine_free(struct gmachine* g) {
stack_free(&g->stack);
struct node_base* to_free = g->nodes;
struct node_base* next;
while(to_free) {
next = to_free->gc_next;
free_node_direct(to_free);
free(to_free);
to_free = next;
}
}
void gmachine_slide(struct gmachine* g, size_t n) {
assert(g->stack.count > n);
g->stack.data[g->stack.count - n - 1] = g->stack.data[g->stack.count - 1];
g->stack.count -= n;
}
void gmachine_update(struct gmachine* g, size_t o) {
assert(g->stack.count > o + 1);
struct node_ind* ind =
(struct node_ind*) g->stack.data[g->stack.count - o - 2];
ind->base.tag = NODE_IND;
ind->next = s->data[s->count -= 1];
ind->next = g->stack.data[g->stack.count -= 1];
}
void stack_alloc(struct stack* s, size_t o) {
void gmachine_alloc(struct gmachine* g, size_t o) {
while(o--) {
stack_push(s, (struct node_base*) alloc_ind(NULL));
stack_push(&g->stack,
gmachine_track(g, (struct node_base*) alloc_ind(NULL)));
}
}
void stack_pack(struct stack* s, size_t n, int8_t t) {
assert(s->count >= n);
void gmachine_pack(struct gmachine* g, size_t n, int8_t t) {
assert(g->stack.count >= n);
struct node_base** data = malloc(sizeof(*data) * n);
assert(data != NULL);
memcpy(data, &s->data[s->count - n], n * sizeof(*data));
memcpy(data, &g->stack.data[g->stack.count - n], n * sizeof(*data));
struct node_data* new_node = (struct node_data*) alloc_node();
new_node->array = data;
new_node->base.tag = NODE_DATA;
new_node->tag = t;
stack_popn(s, n);
stack_push(s, (struct node_base*) new_node);
stack_popn(&g->stack, n);
stack_push(&g->stack, gmachine_track(g, (struct node_base*) new_node));
}
void stack_split(struct stack* s, size_t n) {
struct node_data* node = (struct node_data*) stack_pop(s);
void gmachine_split(struct gmachine* g, size_t n) {
struct node_data* node = (struct node_data*) stack_pop(&g->stack);
for(size_t i = 0; i < n; i++) {
stack_push(s, node->array[i]);
stack_push(&g->stack, node->array[i]);
}
}
void unwind(struct stack* s) {
struct node_base* gmachine_track(struct gmachine* g, struct node_base* b) {
b->gc_next = g->nodes;
g->nodes = b;
return b;
}
void gmachine_gc(struct gmachine* g) {
}
void unwind(struct gmachine* g) {
struct stack* s = &g->stack;
while(1) {
struct node_base* peek = stack_peek(s, 0);
if(peek->tag == NODE_APP) {
@ -131,7 +169,7 @@ void unwind(struct stack* s) {
= ((struct node_app*) s->data[s->count - i - 1])->right;
}
n->function(s);
n->function(g);
} else if(peek->tag == NODE_IND) {
struct node_ind* n = (struct node_ind*) peek;
stack_pop(s);
@ -142,17 +180,7 @@ void unwind(struct stack* s) {
}
}
struct node_base* eval(struct node_base* n) {
struct stack program_stack;
stack_init(&program_stack);
stack_push(&program_stack, n);
unwind(&program_stack);
struct node_base* result = stack_pop(&program_stack);
stack_free(&program_stack);
return result;
}
extern void f_main(struct stack* s);
extern void f_main(struct gmachine* s);
void print_node(struct node_base* n) {
if(n->tag == NODE_APP) {
@ -174,10 +202,17 @@ void print_node(struct node_base* n) {
}
int main(int argc, char** argv) {
struct gmachine gmachine;
struct node_global* first_node = alloc_global(f_main, 0);
struct node_base* result = eval((struct node_base*) first_node);
struct node_base* result;
gmachine_init(&gmachine);
gmachine_track(&gmachine, (struct node_base*) first_node);
stack_push(&gmachine.stack, (struct node_base*) first_node);
unwind(&gmachine);
result = stack_pop(&gmachine.stack);
printf("Result: ");
print_node(result);
putchar('\n');
gmachine_free(&gmachine);
}

29
code/compiler/09/runtime.h
View File

@ -1,7 +1,7 @@
#pragma once
#include <stdlib.h>
struct stack;
struct gmachine;
enum node_tag {
NODE_APP,
@ -13,6 +13,8 @@ enum node_tag {
struct node_base {
enum node_tag tag;
int8_t gc_color;
struct node_base* gc_next;
};
struct node_app {
@ -29,7 +31,7 @@ struct node_num {
struct node_global {
struct node_base base;
int32_t arity;
void (*function)(struct stack*);
void (*function)(struct gmachine*);
};
struct node_ind {
@ -46,8 +48,9 @@ struct node_data {
struct node_base* alloc_node();
struct node_app* alloc_app(struct node_base* l, struct node_base* r);
struct node_num* alloc_num(int32_t n);
struct node_global* alloc_global(void (*f)(struct stack*), int32_t a);
struct node_global* alloc_global(void (*f)(struct gmachine*), int32_t a);
struct node_ind* alloc_ind(struct node_base* n);
void free_node_direct(struct node_base*);
struct stack {
size_t size;
@ -61,10 +64,18 @@ void stack_push(struct stack* s, struct node_base* n);
struct node_base* stack_pop(struct stack* s);
struct node_base* stack_peek(struct stack* s, size_t o);
void stack_popn(struct stack* s, size_t n);
void stack_slide(struct stack* s, size_t n);
void stack_update(struct stack* s, size_t o);
void stack_alloc(struct stack* s, size_t o);
void stack_pack(struct stack* s, size_t n, int8_t t);
void stack_split(struct stack* s, size_t n);
struct node_base* eval(struct node_base* n);
struct gmachine {
struct stack stack;
struct node_base* nodes;
};
void gmachine_init(struct gmachine* g);
void gmachine_free(struct gmachine* g);
void gmachine_slide(struct gmachine* g, size_t n);
void gmachine_update(struct gmachine* g, size_t o);
void gmachine_alloc(struct gmachine* g, size_t o);
void gmachine_pack(struct gmachine* g, size_t n, int8_t t);
void gmachine_split(struct gmachine* g, size_t n);
struct node_base* gmachine_track(struct gmachine* g, struct node_base* b);
void gmachine_gc(struct gmachine* g);