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codegen.cpp
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#ifndef __STDC_LIMIT_MACROS
#define __STDC_LIMIT_MACROS
#define __STDC_CONSTANT_MACROS
#endif
#include "llvm/DerivedTypes.h"
#include "llvm/ExecutionEngine/ExecutionEngine.h"
#include "llvm/ExecutionEngine/JIT.h"
#include "llvm/ExecutionEngine/JITEventListener.h"
#include "llvm/LLVMContext.h"
#include "llvm/Module.h"
#include "llvm/Intrinsics.h"
#include "llvm/PassManager.h"
#include "llvm/Analysis/Verifier.h"
#include "llvm/Attributes.h"
#if defined(LLVM_VERSION_MAJOR) && LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 2
#include "llvm/DebugInfo.h"
#include "llvm/DIBuilder.h"
#include "llvm/IRBuilder.h"
#define LLVM32
#else
#include "llvm/Analysis/DebugInfo.h"
#include "llvm/Analysis/DIBuilder.h"
#include "llvm/Target/TargetData.h"
#include "llvm/Support/IRBuilder.h"
#endif
#include "llvm/Target/TargetOptions.h"
#include "llvm/Transforms/Scalar.h"
#include "llvm/Transforms/Utils/BasicBlockUtils.h"
#if defined(LLVM_VERSION_MAJOR) && LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 1
#include "llvm/Transforms/Vectorize.h"
#endif
#include "llvm/Support/TargetSelect.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/DynamicLibrary.h"
#include "llvm/Config/llvm-config.h"
#include <setjmp.h>
#ifdef __WIN32__
#include <malloc.h>
#endif
#include <string>
#include <sstream>
#include <map>
#include <vector>
#include <set>
#include <cstdio>
#ifdef DEBUG
#undef NDEBUG
#endif
#include <cassert>
using namespace llvm;
extern "C" {
#include "julia.h"
#include "builtin_proto.h"
}
#define CONDITION_REQUIRES_BOOL
// llvm state
static LLVMContext &jl_LLVMContext = getGlobalContext();
static IRBuilder<> builder(getGlobalContext());
static bool nested_compile=false;
static Module *jl_Module;
static ExecutionEngine *jl_ExecutionEngine;
static DIBuilder *dbuilder;
static std::map<int, std::string> argNumberStrings;
static FunctionPassManager *FPM;
// types
static Type *jl_value_llvmt;
static Type *jl_pvalue_llvmt;
static Type *jl_ppvalue_llvmt;
static FunctionType *jl_func_sig;
static Type *jl_fptr_llvmt;
static Type *T_int1;
static Type *T_int8;
static Type *T_pint8;
static Type *T_uint8;
static Type *T_int16;
static Type *T_pint16;
static Type *T_uint16;
static Type *T_int32;
static Type *T_pint32;
static Type *T_uint32;
static Type *T_int64;
static Type *T_pint64;
static Type *T_uint64;
static Type *T_char;
static Type *T_size;
static Type *T_psize;
static Type *T_float32;
static Type *T_pfloat32;
static Type *T_float64;
static Type *T_pfloat64;
static Type *T_void;
// constants
static Value *V_null;
// global vars
static GlobalVariable *jltrue_var;
static GlobalVariable *jlfalse_var;
static GlobalVariable *jlnull_var;
static GlobalVariable *jlfloat32temp_var;
#ifdef JL_GC_MARKSWEEP
static GlobalVariable *jlpgcstack_var;
#endif
static GlobalVariable *jlexc_var;
static GlobalVariable *jldiverr_var;
static GlobalVariable *jlundeferr_var;
static GlobalVariable *jldomerr_var;
static GlobalVariable *jlovferr_var;
static GlobalVariable *jlinexacterr_var;
static GlobalVariable *jlboundserr_var;
// important functions
static Function *jlnew_func;
static Function *jlthrow_func;
static Function *jlthrow_line_func;
static Function *jlerror_func;
static Function *jltypeerror_func;
static Function *jlcheckassign_func;
static Function *jldeclareconst_func;
static Function *jltuple_func;
static Function *jlntuple_func;
static Function *jlapplygeneric_func;
static Function *jlgetfield_func;
static Function *jlbox_func;
static Function *jlclosure_func;
static Function *jlmethod_func;
static Function *jlenter_func;
static Function *jlleave_func;
static Function *jlegal_func;
static Function *jlallocobj_func;
static Function *jlalloc2w_func;
static Function *jlalloc3w_func;
static Function *setjmp_func;
static Function *box_int8_func;
static Function *box_uint8_func;
static Function *box_int16_func;
static Function *box_uint16_func;
static Function *box_int32_func;
static Function *box_char_func;
static Function *box_uint32_func;
static Function *box_int64_func;
static Function *box_uint64_func;
static Function *box_float32_func;
static Function *box_float64_func;
static Function *box8_func;
static Function *box16_func;
static Function *box32_func;
static Function *box64_func;
/**
* This is the handle to the shared library
* that contains compiled version of functions
* it it loaded at loading along with sys.ji
*/
static void* handleNativeCodeSharedObject;
/*
stuff to fix up:
- function/var name (un)mangling
- experiment with llvm optimization passes, option to disable them
- varargs and ... optimizations
future:
- try using fastcc to get tail calls
*/
// --- entry point ---
void* native_function_lookup(const char* fn);
inline std::string native_funcName(jl_lambda_info_t *lam)
{
std::string name = lam->name->name;
// try to avoid conflicts in the global symbol table
return "julia_" + name;
}
static Function *emit_function(jl_lambda_info_t *lam);
//static int n_compile=0;
static Function *to_function(jl_lambda_info_t *li)
{
JL_SIGATOMIC_BEGIN();
assert(!li->inInference);
BasicBlock *old = nested_compile ? builder.GetInsertBlock() : NULL;
DebugLoc olddl = builder.getCurrentDebugLocation();
bool last_n_c = nested_compile;
nested_compile = true;
Function *f = NULL;
JL_TRY {
f = emit_function(li);
}
JL_CATCH {
li->functionObject = NULL;
li->cFunctionObject = NULL;
nested_compile = last_n_c;
if (old != NULL) {
builder.SetInsertPoint(old);
builder.SetCurrentDebugLocation(olddl);
}
JL_SIGATOMIC_END();
if (jl_typeis(jl_exception_in_transit, jl_errorexception_type)) {
char *str = jl_string_data(jl_fieldref(jl_exception_in_transit,0));
char buf[1024];
int nc = snprintf(buf, sizeof(buf), "error compiling %s: %s",
li->name->name, str);
jl_value_t *msg = jl_pchar_to_string(buf, nc);
JL_GC_PUSH(&msg);
jl_throw(jl_new_struct(jl_errorexception_type, msg));
}
jl_rethrow();
}
assert(f != NULL);
nested_compile = last_n_c;
//f->dump();
//verifyFunction(*f);
FPM->run(*f);
//n_compile++;
// print out the function's LLVM code
//ios_printf(ios_stderr, "%s:%d\n",
// ((jl_sym_t*)li->file)->name, li->line);
//f->dump();
//verifyFunction(*f);
if (old != NULL) {
builder.SetInsertPoint(old);
builder.SetCurrentDebugLocation(olddl);
}
JL_SIGATOMIC_END();
return f;
}
extern "C" void jl_generate_fptr(jl_function_t *f)
{
// objective: assign li->fptr
jl_lambda_info_t *li = f->linfo;
assert(li->functionObject);
Function *llvmf = (Function*)li->functionObject;
if (li->fptr == &jl_trampoline) {
JL_SIGATOMIC_BEGIN();
li->fptr = (jl_fptr_t)jl_ExecutionEngine->getPointerToFunction(llvmf);
if (li->cFunctionObject != NULL)
(void)jl_ExecutionEngine->getPointerToFunction((Function*)li->cFunctionObject);
JL_SIGATOMIC_END();
llvmf->deleteBody();
if (li->cFunctionObject != NULL)
((Function*)li->cFunctionObject)->deleteBody();
}
f->fptr = li->fptr;
}
extern "C" void jl_compile(jl_function_t *f)
{
jl_lambda_info_t *li = f->linfo;
if ((li->fptr == &jl_trampoline) && (li->functionObject == NULL)) {
void* fp = native_function_lookup(native_funcName(li).c_str());
if(fp)
{
f->fptr = li->fptr = (jl_fptr_t)fp;
}
else
{
// objective: assign li->functionObject
li->inCompile = 1;
(void)to_function(li);
li->inCompile = 0;
}
}
}
extern "C" jl_function_t *jl_get_specialization(jl_function_t *f, jl_tuple_t *types);
extern "C" DLLEXPORT
const jl_value_t *jl_dump_function(jl_function_t *f, jl_tuple_t *types)
{
if (!jl_is_function(f) || !jl_is_gf(f))
return jl_cstr_to_string((char*)"");
jl_function_t *sf = jl_get_specialization(f, types);
if (sf == NULL || sf->linfo == NULL) {
sf = jl_method_lookup_by_type(jl_gf_mtable(f), types, 0);
if (sf == jl_bottom_func)
return jl_cstr_to_string((char*)"");
JL_PRINTF(JL_STDERR,
"Warning: Returned code may not match what actually runs.\n");
}
std::string code;
llvm::raw_string_ostream stream(code);
Function *llvmf;
if (sf->linfo->functionObject == NULL) {
jl_compile(sf);
}
if (sf->fptr == &jl_trampoline) {
if (sf->linfo->cFunctionObject != NULL)
llvmf = (Function*)sf->linfo->cFunctionObject;
else
llvmf = (Function*)sf->linfo->functionObject;
}
else {
llvmf = to_function(sf->linfo);
}
llvmf->print(stream);
return jl_cstr_to_string((char*)stream.str().c_str());
}
extern "C" DLLEXPORT
void *jl_function_ptr(jl_function_t *f, jl_value_t *rt, jl_value_t *argt)
{
JL_TYPECHK(jl_function_ptr, type, rt);
JL_TYPECHK(jl_function_ptr, tuple, argt);
JL_TYPECHK(jl_function_ptr, type, argt);
if (jl_is_gf(f) && (jl_is_leaf_type(rt) || rt == (jl_value_t*)jl_bottom_type) && jl_is_leaf_type(argt)) {
jl_function_t *ff = jl_get_specialization(f, (jl_tuple_t*)argt);
if (ff != NULL && ff->env == (jl_value_t*)jl_null && ff->linfo != NULL &&
ff->linfo->cFunctionObject != NULL) {
jl_lambda_info_t *li = ff->linfo;
jl_value_t *astrt = jl_ast_rettype(li, li->ast);
if (jl_types_equal((jl_value_t*)li->specTypes, argt) &&
(jl_types_equal(astrt, rt) ||
(astrt==(jl_value_t*)jl_nothing->type && rt==(jl_value_t*)jl_bottom_type))) {
return jl_ExecutionEngine->getPointerToFunction((Function*)ff->linfo->cFunctionObject);
}
else {
jl_errorf("function_ptr: type signature of %s does not match",
li->name->name);
}
}
}
jl_error("function is not yet c-callable");
return NULL;
}
// information about the context of a piece of code: its enclosing
// function and module, and visible local variables and labels.
typedef struct {
Function *f;
std::map<std::string, Value*> *vars;
//std::map<std::string, Value*> *arguments;
std::map<std::string, Value*> *passedArguments;
std::map<std::string, int> *closureEnv;
std::map<std::string, bool> *isAssigned;
std::map<std::string, bool> *isCaptured;
std::map<std::string, bool> *escapes;
std::set<jl_sym_t*> *volatilevars;
std::map<std::string, jl_value_t*> *declTypes;
std::map<int, BasicBlock*> *labels;
std::map<int, Value*> *handlers;
jl_module_t *module;
jl_expr_t *ast;
jl_tuple_t *sp;
jl_lambda_info_t *linfo;
Value *envArg;
Value *argArray;
Value *argCount;
Instruction *argTemp;
int argDepth;
int maxDepth;
int argSpaceOffs;
std::string funcName;
jl_sym_t *vaName; // name of vararg argument
bool vaStack; // varargs stack-allocated
int nReqArgs;
int lineno;
} jl_codectx_t;
static Value *emit_expr(jl_value_t *expr, jl_codectx_t *ctx, bool boxed=true,
bool valuepos=true);
static Value *emit_unboxed(jl_value_t *e, jl_codectx_t *ctx);
static int is_global(jl_sym_t *s, jl_codectx_t *ctx);
static void make_gcroot(Value *v, jl_codectx_t *ctx);
static Value *global_binding_pointer(jl_module_t *m, jl_sym_t *s,
jl_binding_t **pbnd, bool assign);
static Value *emit_checked_var(Value *bp, const char *name, jl_codectx_t *ctx);
// --- utilities ---
#include "cgutils.cpp"
#include "debuginfo.cpp"
// --- code gen for intrinsic functions ---
#include "intrinsics.cpp"
// --- constant determination ---
// try to statically evaluate, NULL if not possible
static jl_value_t *static_eval(jl_value_t *ex, jl_codectx_t *ctx, bool sparams)
{
if (jl_is_symbolnode(ex))
ex = (jl_value_t*)jl_symbolnode_sym(ex);
if (jl_is_symbol(ex)) {
jl_sym_t *sym = (jl_sym_t*)ex;
if (is_global(sym, ctx)) {
size_t i;
if (sparams) {
for(i=0; i < jl_tuple_len(ctx->sp); i+=2) {
if (sym == (jl_sym_t*)jl_tupleref(ctx->sp, i)) {
// static parameter
return jl_tupleref(ctx->sp, i+1);
}
}
}
if (jl_is_const(ctx->module, sym))
return jl_get_global(ctx->module, sym);
}
return NULL;
}
if (jl_is_topnode(ex)) {
jl_binding_t *b = jl_get_binding(topmod(ctx),
(jl_sym_t*)jl_fieldref(ex,0));
if (b == NULL) return NULL;
if (b->constp)
return b->value;
}
if (jl_is_quotenode(ex))
return jl_fieldref(ex,0);
if (jl_is_lambda_info(ex))
return NULL;
jl_module_t *m = NULL;
jl_sym_t *s = NULL;
if (jl_is_getfieldnode(ex)) {
m = (jl_module_t*)static_eval(jl_fieldref(ex,0),ctx,sparams);
s = (jl_sym_t*)jl_fieldref(ex,1);
if (m && jl_is_module(m) && s && jl_is_symbol(s)) {
jl_binding_t *b = jl_get_binding(m, s);
if (b && b->constp)
return b->value;
}
return NULL;
}
if (jl_is_expr(ex)) {
jl_expr_t *e = (jl_expr_t*)ex;
if (e->head == call_sym || e->head == call1_sym) {
jl_value_t *f = static_eval(jl_exprarg(e,0),ctx,sparams);
if (f && jl_is_function(f)) {
jl_fptr_t fptr = ((jl_function_t*)f)->fptr;
if (fptr == &jl_apply_generic) {
if (f == jl_get_global(jl_base_module, jl_symbol("dlsym")) ||
f == jl_get_global(jl_base_module, jl_symbol("dlopen")))
{
size_t i;
size_t n = jl_array_dim0(e->args);
jl_value_t **v;
JL_GC_PUSHARGS(v, n);
memset(v, 0, n*sizeof(jl_value_t*));
v[0] = f;
for (i = 1; i < n; i++) {
v[i] = static_eval(jl_exprarg(e,i),ctx,sparams);
if (v[i] == NULL) {
JL_GC_POP();
return NULL;
}
}
jl_value_t *result = jl_apply_generic(f, v+1, (uint32_t)n-1);
JL_GC_POP();
return result;
}
} else if (jl_array_dim0(e->args) == 3 && fptr == &jl_f_get_field) {
m = (jl_module_t*)static_eval(jl_exprarg(e,1),ctx,sparams);
s = (jl_sym_t*)static_eval(jl_exprarg(e,2),ctx,sparams);
if (m && jl_is_module(m) && s && jl_is_symbol(s)) {
jl_binding_t *b = jl_get_binding(m, s);
if (b && b->constp)
return b->value;
}
} else if (fptr == &jl_f_tuple) {
size_t i;
size_t n = jl_array_dim0(e->args)-1;
if (n==0) return (jl_value_t*)jl_null;
jl_value_t **v;
JL_GC_PUSHARGS(v, n);
memset(v, 0, n*sizeof(jl_value_t*));
for (i = 0; i < n; i++) {
v[i] = static_eval(jl_exprarg(e,i+1),ctx,sparams);
if (v[i] == NULL) {
JL_GC_POP();
return NULL;
}
}
jl_tuple_t *tup = jl_alloc_tuple_uninit(n);
for(i=0; i < n; i++) {
jl_tupleset(tup, i, v[i]);
}
JL_GC_POP();
return (jl_value_t*)tup;
}
}
// The next part is probably valid, but it is untested
//} else if (e->head == tuple_sym) {
// size_t i;
// for (i = 0; i < jl_array_dim0(e->args); i++)
// if (static_eval(jl_exprarg(e,i), ctx, sparams) == NULL)
// return NULL;
// return ex;
}
return NULL;
}
return ex;
}
static bool is_constant(jl_value_t *ex, jl_codectx_t *ctx, bool sparams=true)
{
return static_eval(ex,ctx,sparams) != NULL;
}
static bool symbol_eq(jl_value_t *e, jl_sym_t *sym)
{
return ((jl_is_symbol(e) && ((jl_sym_t*)e)==sym) ||
(jl_is_symbolnode(e) && jl_symbolnode_sym(e)==sym));
}
// --- find volatile variables ---
// assigned in a try block and used outside that try block
static bool local_var_occurs(jl_value_t *e, jl_sym_t *s)
{
if (jl_is_symbol(e) || jl_is_symbolnode(e)) {
if (symbol_eq(e, s))
return true;
}
else if (jl_is_expr(e)) {
jl_expr_t *ex = (jl_expr_t*)e;
size_t alength = jl_array_dim0(ex->args);
for(int i=0; i < (int)alength; i++) {
if (local_var_occurs(jl_exprarg(ex,i),s))
return true;
}
}
else if (jl_is_getfieldnode(e)) {
if (local_var_occurs(jl_fieldref(e,0),s))
return true;
}
return false;
}
static std::set<jl_sym_t*> assigned_in_try(jl_array_t *stmts, int s, long l,
int *pend)
{
std::set<jl_sym_t*> av;
size_t slength = jl_array_dim0(stmts);
for(int i=s; i < (int)slength; i++) {
jl_value_t *st = jl_arrayref(stmts,i);
if (jl_is_expr(st)) {
if (((jl_expr_t*)st)->head == assign_sym) {
jl_sym_t *sy;
jl_value_t *ar = jl_exprarg(st, 0);
if (jl_is_symbolnode(ar)) {
sy = jl_symbolnode_sym(ar);
}
else {
assert(jl_is_symbol(ar));
sy = (jl_sym_t*)ar;
}
av.insert(sy);
}
}
if (jl_is_labelnode(st)) {
if (jl_labelnode_label(st) == l) {
*pend = i;
break;
}
}
}
return av;
}
static std::set<jl_sym_t*> find_volatile_vars(jl_array_t *stmts)
{
std::set<jl_sym_t*> vv;
size_t slength = jl_array_dim0(stmts);
for(int i=0; i < (int)slength; i++) {
jl_value_t *st = jl_arrayref(stmts,i);
if (jl_is_expr(st)) {
if (((jl_expr_t*)st)->head == enter_sym) {
int last = (int)slength-1;
std::set<jl_sym_t*> as =
assigned_in_try(stmts, i+1,
jl_unbox_long(jl_exprarg(st,0)), &last);
for(int j=0; j < (int)slength; j++) {
if (j < i || j > last) {
std::set<jl_sym_t*>::iterator it = as.begin();
for(; it != as.end(); it++) {
if (local_var_occurs(jl_arrayref(stmts,j), *it)) {
vv.insert(*it);
}
}
}
}
}
}
}
return vv;
}
// --- gc root counting ---
static bool expr_is_symbol(jl_value_t *e)
{
return (jl_is_symbol(e) || jl_is_symbolnode(e) || jl_is_topnode(e));
}
// some analysis. determine max needed "evaluation stack" space for
// gc-rooting function arguments.
// also a very simple, conservative escape analysis that is sufficient for
// eliding allocation of varargs tuples.
// "esc" means "in escaping context"
static void max_arg_depth(jl_value_t *expr, int32_t *max, int32_t *sp,
bool esc, jl_codectx_t *ctx)
{
if (jl_is_expr(expr)) {
esc = true;
jl_expr_t *e = (jl_expr_t*)expr;
size_t i;
if (e->head == call_sym || e->head == call1_sym) {
int alen = jl_array_dim0(e->args);
int lastsp = *sp;
jl_value_t *f = jl_exprarg(e,0);
if (expr_is_symbol(f)) {
if (is_constant(f, ctx, false)) {
jl_value_t *fv =
jl_interpret_toplevel_expr_in(ctx->module, f, NULL, 0);
if (jl_typeis(fv, jl_intrinsic_type)) {
esc = false;
JL_I::intrinsic fi = (JL_I::intrinsic)jl_unbox_int32(fv);
if (fi != JL_I::ccall) {
// here we need space for each argument, but
// not for each of their results
for(i=1; i < (size_t)alen; i++) {
max_arg_depth(jl_exprarg(e,i), max, sp, esc, ctx);
}
return;
}
else {
esc = true;
// 2nd and 3d arguments are static
max_arg_depth(jl_exprarg(e,1), max, sp, esc, ctx);
for(i=4; i < (size_t)alen; i++) {
max_arg_depth(jl_exprarg(e,i), max, sp, esc, ctx);
}
return;
}
}
else if (jl_is_function(fv)) {
jl_function_t *ff = (jl_function_t*)fv;
if (ff->fptr == jl_f_tuplelen ||
ff->fptr == jl_f_tupleref) {
esc = false;
}
}
}
}
else if (jl_is_expr(f) || jl_is_lambda_info(f)) {
max_arg_depth(f, max, sp, esc, ctx);
(*sp)++;
if (*sp > *max) *max = *sp;
}
for(i=1; i < (size_t)alen; i++) {
max_arg_depth(jl_exprarg(e,i), max, sp, esc, ctx);
(*sp)++;
if (*sp > *max) *max = *sp;
}
(*sp) = lastsp;
}
else if (e->head == method_sym) {
max_arg_depth(jl_exprarg(e,1), max, sp, esc, ctx);
(*sp)++;
if (*sp > *max) *max = *sp;
max_arg_depth(jl_exprarg(e,2), max, sp, esc, ctx);
(*sp)++;
if (*sp > *max) *max = *sp;
max_arg_depth(jl_exprarg(e,3), max, sp, esc, ctx);
(*sp)++;
if (*sp > *max) *max = *sp;
(*sp)-=2;
}
else {
size_t elen = jl_array_dim0(e->args);
for(i=0; i < elen; i++) {
max_arg_depth(jl_exprarg(e,i), max, sp, esc, ctx);
}
}
}
else if (jl_is_lambda_info(expr)) {
if (1 > *max) *max = 1;
}
else if (jl_is_symbolnode(expr)) {
expr = (jl_value_t*)jl_symbolnode_sym(expr);
}
else if (jl_is_getfieldnode(expr)) {
if (2 > *max) *max = 2;
}
if (jl_is_symbol(expr)) {
char *vname = ((jl_sym_t*)expr)->name;
if (ctx->escapes->find(vname) != ctx->escapes->end()) {
bool did_escape = (*ctx->escapes)[vname];
(*ctx->escapes)[vname] = did_escape || esc;
}
}
}
static void make_gcroot(Value *v, jl_codectx_t *ctx)
{
Value *froot = builder.CreateGEP(ctx->argTemp,
ConstantInt::get(T_size,
ctx->argSpaceOffs +
ctx->argDepth));
builder.CreateStore(v, froot);
ctx->argDepth++;
if (ctx->argDepth > ctx->maxDepth)
ctx->maxDepth = ctx->argDepth;
}
// --- lambda ---
static void jl_add_linfo_root(jl_lambda_info_t *li, jl_value_t *val)
{
li = li->def;
if (li->roots == NULL) {
li->roots = jl_alloc_cell_1d(1);
jl_cellset(li->roots, 0, val);
}
else {
size_t rlen = jl_array_dim0(li->roots);
for(size_t i=0; i < rlen; i++) {
if (jl_arrayref(li->roots,i) == val)
return;
}
jl_cell_1d_push(li->roots, val);
}
}
static Value *emit_lambda_closure(jl_value_t *expr, jl_codectx_t *ctx)
{
assert(jl_is_lambda_info(expr));
size_t i;
jl_value_t *ast = ((jl_lambda_info_t*)expr)->ast;
jl_array_t *capt;
if (jl_is_expr(ast))
capt = jl_lam_capt((jl_expr_t*)ast);
else
capt = (jl_array_t*)((jl_lambda_info_t*)expr)->capt;
if (capt == NULL || jl_array_dim0(capt) == 0) {
// no captured vars; lift
jl_value_t *fun =
(jl_value_t*)jl_new_closure(NULL, (jl_value_t*)jl_null,
(jl_lambda_info_t*)expr);
jl_add_linfo_root(ctx->linfo, fun);
return literal_pointer_val(fun);
}
int argStart = ctx->argDepth;
size_t clen = jl_array_dim0(capt);
Value *captured[1+clen];
captured[0] = ConstantInt::get(T_size, clen);
for(i=0; i < clen; i++) {
Value *val;
jl_array_t *vi = (jl_array_t*)jl_cellref(capt, i);
assert(jl_is_array(vi));
jl_sym_t *s = (jl_sym_t*)jl_cellref(vi,0);
assert(jl_is_symbol(s));
std::map<std::string,int>::iterator it = ctx->closureEnv->find(s->name);
if (it != ctx->closureEnv->end()) {
int idx = (*it).second;
val = emit_nthptr((Value*)ctx->envArg, idx+2);
}
else {
Value *l = (*ctx->vars)[s->name];
if (l == NULL) {
val = (*ctx->passedArguments)[s->name];
if (val->getType() != jl_pvalue_llvmt) {
val = boxed(val);
make_gcroot(val, ctx);
}
assert(val != NULL);
}
else {
val = builder.CreateLoad(l, false);
}
}
captured[i+1] = val;
}
Value *env_tuple;
env_tuple = builder.CreateCall(jlntuple_func,
ArrayRef<Value*>(&captured[0],
1+clen));
ctx->argDepth = argStart;
make_gcroot(env_tuple, ctx);
Value *result = builder.CreateCall3(jlclosure_func,
Constant::getNullValue(T_pint8),
env_tuple, literal_pointer_val(expr));
ctx->argDepth--;
return result;
}
// --- generating function calls ---
static jl_tuple_t *call_arg_types(jl_value_t **args, size_t n, jl_codectx_t *ctx)
{
jl_tuple_t *t = jl_alloc_tuple(n);
JL_GC_PUSH(&t);
size_t i;
for(i=0; i < n; i++) {
jl_value_t *ty = expr_type(args[i], ctx);
if (!jl_is_leaf_type(ty)) {
t = NULL;
break;
}
jl_tupleset(t, i, ty);
}
JL_GC_POP();
return t;
}
static Value *emit_getfield(jl_value_t *expr, jl_sym_t *name, jl_codectx_t *ctx)
{
if (jl_is_quotenode(expr) && jl_is_module(jl_fieldref(expr,0)))
expr = jl_fieldref(expr,0);
if (jl_is_module(expr)) {
Value *bp =
global_binding_pointer((jl_module_t*)expr, name, NULL, false);
// todo: use type info to avoid undef check
return emit_checked_var(bp, name->name, ctx);
}
jl_struct_type_t *sty = (jl_struct_type_t*)expr_type(expr, ctx);
JL_GC_PUSH(&sty);
if (jl_is_struct_type(sty) && sty != jl_module_type && sty->uid != 0) {
size_t idx = jl_field_index(sty, name, 0);
if (idx != (size_t)-1) {
Value *strct = emit_expr(expr, ctx);
Value *addr =
builder.CreateGEP(builder.CreateBitCast(strct, T_pint8),
ConstantInt::get(T_size,
sty->fields[idx].offset + sizeof(void*)));
jl_value_t *jfty = jl_tupleref(sty->types, idx);
JL_GC_POP();
return typed_load(addr, ConstantInt::get(T_size, 0), jfty, ctx);
}
}
// TODO: attempt better codegen for approximate types, if the types
// and offsets of some fields are independent of parameters.
JL_GC_POP();
int argStart = ctx->argDepth;
Value *arg1 = emit_expr(expr, ctx);
make_gcroot(boxed(arg1), ctx);
Value *arg2 = literal_pointer_val((jl_value_t*)name);
make_gcroot(arg2, ctx);
Value *myargs = builder.CreateGEP(ctx->argTemp,
ConstantInt::get(T_size, argStart+ctx->argSpaceOffs));
Value *result = builder.CreateCall3(jlgetfield_func, V_null, myargs,
ConstantInt::get(T_int32,2));
ctx->argDepth = argStart;
return result;
}
static void emit_setfield(jl_struct_type_t *sty, Value *strct, size_t idx,
Value *rhs, jl_codectx_t *ctx)
{
Value *addr =
builder.CreateGEP(builder.CreateBitCast(strct, T_pint8),
ConstantInt::get(T_size, sty->fields[idx].offset + sizeof(void*)));
jl_value_t *jfty = jl_tupleref(sty->types, idx);
typed_store(addr, ConstantInt::get(T_size, 0), rhs, jfty, ctx);
}
static Value *emit_known_call(jl_value_t *ff, jl_value_t **args, size_t nargs,
jl_codectx_t *ctx,
Value **theFptr, jl_function_t **theF,
jl_value_t *expr)
{
if (jl_typeis(ff, jl_intrinsic_type)) {
return emit_intrinsic((intrinsic)*(uint32_t*)jl_bits_data(ff),
args, nargs, ctx);
}
if (!jl_is_func(ff)) {
return NULL;
}
jl_value_t *rt1=NULL, *rt2=NULL, *rt3=NULL;
JL_GC_PUSH(&rt1, &rt2, &rt3);
jl_function_t *f = (jl_function_t*)ff;
if (f->fptr == &jl_apply_generic) {
*theFptr = jlapplygeneric_func;
*theF = f;
if (ctx->linfo->specTypes != NULL) {
jl_tuple_t *aty = call_arg_types(&args[1], nargs, ctx);
rt1 = (jl_value_t*)aty;
// attempt compile-time specialization for inferred types
if (aty != NULL) {
/*
if (trace) {
JL_PRINTF(JL_STDOUT, "call %s%s\n",
jl_sprint(args[0]),
jl_sprint((jl_value_t*)aty));
}
*/
f = jl_get_specialization(f, aty);
if (f != NULL) {
assert(f->linfo->functionObject != NULL);
*theFptr = (Value*)f->linfo->functionObject;
*theF = f;
}
}
}
}
else if (f->fptr == &jl_f_is && nargs==2) {
jl_value_t *rt1 = expr_type(args[1], ctx);
jl_value_t *rt2 = expr_type(args[2], ctx);
if (jl_is_type_type(rt1) && jl_is_type_type(rt2) &&
!jl_is_typevar(jl_tparam0(rt1)) &&
!jl_is_typevar(jl_tparam0(rt2)) &&
is_constant(args[1], ctx) && is_constant(args[2], ctx)) {
JL_GC_POP();
if (jl_tparam0(rt1) == jl_tparam0(rt2))
return ConstantInt::get(T_int1, 1);
return ConstantInt::get(T_int1, 0);
}
JL_GC_POP();
int ptr_comparable = 0;
if (rt1==(jl_value_t*)jl_sym_type || rt2==(jl_value_t*)jl_sym_type ||
jl_is_struct_type(rt1) || jl_is_struct_type(rt2))
ptr_comparable = 1;
Value *arg1 = emit_expr(args[1], ctx);
Value *arg2 = emit_expr(args[2], ctx);
if (arg1->getType() != jl_pvalue_llvmt &&
arg2->getType() != jl_pvalue_llvmt) {
if (julia_type_of(arg1) != julia_type_of(arg2)) {
return ConstantInt::get(T_int1, 0);
}
return builder.CreateICmpEQ(JL_INT(arg1),JL_INT(arg2));
}
arg1 = boxed(arg1); arg2 = boxed(arg2);
if (ptr_comparable)
return builder.CreateICmpEQ(arg1, arg2);
else
return builder.CreateTrunc(builder.CreateCall2(jlegal_func, arg1, arg2), T_int1);
}
else if (f->fptr == &jl_f_typeof && nargs==1) {
jl_value_t *aty = expr_type(args[1], ctx); rt1 = aty;
if (!jl_is_typevar(aty) && aty != (jl_value_t*)jl_any_type &&
jl_type_intersection(aty,(jl_value_t*)jl_tuple_type)==(jl_value_t*)jl_bottom_type) {
if (jl_is_leaf_type(aty)) {
if (jl_is_type_type(aty))
aty = (jl_value_t*)jl_typeof(jl_tparam0(aty));
JL_GC_POP();
return literal_pointer_val(aty);
}
Value *arg1 = boxed(emit_expr(args[1], ctx));
JL_GC_POP();
return emit_nthptr(arg1, (size_t)0);
}
}
else if (f->fptr == &jl_f_typeassert && nargs==2) {
jl_value_t *arg = expr_type(args[1], ctx); rt1 = arg;
jl_value_t *ty = expr_type(args[2], ctx); rt2 = ty;
if (jl_is_type_type(ty) && !jl_is_typevar(jl_tparam0(ty))) {
jl_value_t *tp0 = jl_tparam0(ty);
if (jl_subtype(arg, tp0, 0)) {
JL_GC_POP();
return emit_expr(args[1], ctx);
}
if (!jl_is_tuple(tp0) && jl_is_leaf_type(tp0)) {
Value *arg1 = emit_expr(args[1], ctx);
emit_typecheck(arg1, tp0, "typeassert", ctx);
JL_GC_POP();
return arg1;
}
}
}
else if (f->fptr == &jl_f_isa && nargs==2) {
jl_value_t *arg = expr_type(args[1], ctx); rt1 = arg;
jl_value_t *ty = expr_type(args[2], ctx); rt2 = ty;
if (jl_is_type_type(ty) && !jl_is_typevar(jl_tparam0(ty))) {
jl_value_t *tp0 = jl_tparam0(ty);
if (jl_subtype(arg, tp0, 0)) {
JL_GC_POP();
return ConstantInt::get(T_int1,1);
}
if (!jl_is_tuple(tp0) && jl_is_leaf_type(tp0) &&
!jl_is_type_type(tp0)) {
if (jl_is_leaf_type(arg)) {
JL_GC_POP();
return ConstantInt::get(T_int1,0);
}
Value *arg1 = emit_expr(args[1], ctx);
JL_GC_POP();
return builder.CreateICmpEQ(emit_typeof(arg1),
literal_pointer_val(tp0));
}
}
}
else if (f->fptr == &jl_f_tuplelen && nargs==1) {
jl_value_t *aty = expr_type(args[1], ctx); rt1 = aty;
if (jl_is_tuple(aty)) {