/
intrinsics.cpp
1353 lines (1276 loc) · 51.6 KB
/
intrinsics.cpp
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namespace JL_I {
enum intrinsic {
// wrap and unwrap
box=0, unbox,
// arithmetic
neg_int, add_int, sub_int, mul_int,
sdiv_int, udiv_int, srem_int, urem_int, smod_int,
neg_float, add_float, sub_float, mul_float, div_float, rem_float,
// same-type comparisons
eq_int, ne_int,
slt_int, ult_int,
sle_int, ule_int,
eq_float, ne_float,
lt_float, le_float,
fpiseq, fpislt,
// mixed-type comparisons
eqfsi64, eqfui64,
ltfsi64, ltfui64,
lefsi64, lefui64,
ltsif64, ltuif64,
lesif64, leuif64,
// bitwise operators
and_int, or_int, xor_int, not_int, shl_int, lshr_int, ashr_int,
bswap_int, ctpop_int, ctlz_int, cttz_int,
// conversion
sext_int, zext_int, trunc_int,
fptoui, fptosi, uitofp, sitofp,
fptrunc, fpext,
// checked conversion
fpsiround, fpuiround, checked_fptoui, checked_fptosi,
// checked arithmetic
checked_sadd, checked_uadd, checked_ssub, checked_usub,
checked_smul, checked_umul,
nan_dom_err,
// functions
abs_float, copysign_float, flipsign_int, select_value,
sqrt_llvm, powi_llvm,
// pointer access
pointerref, pointerset, pointertoref,
// c interface
ccall, cglobal, jl_alloca
};
};
using namespace JL_I;
#include "ccall.cpp"
/*
low-level intrinsics design:
functions like add_int expect unboxed values of matching bit-length.
every operation that can return an unboxed value does so.
this maximizes opportunities for composing functions without
unnecessary boxing.
this means that box and unbox functions might do nothing except change
the type tag of a value.
boxing is delayed until absolutely necessary, and handled at the point
where the box is needed.
*/
static Type *FTnbits(size_t nb)
{
#ifndef DISABLE_FLOAT16
if (nb == 16)
return Type::getHalfTy(jl_LLVMContext);
else
#endif
if (nb == 32)
return Type::getFloatTy(jl_LLVMContext);
else if (nb == 64)
return Type::getDoubleTy(jl_LLVMContext);
else if (nb == 128)
return Type::getFP128Ty(jl_LLVMContext);
else
jl_error("Unsupported Float Size");
}
// convert int type to same-size float type
static Type *FT(Type *t)
{
if (t->isFloatingPointTy())
return t;
return FTnbits(t->getPrimitiveSizeInBits());
}
// reinterpret-cast to float
static Value *FP(Value *v)
{
if (v->getType()->isFloatingPointTy())
return v;
return builder.CreateBitCast(v, FT(v->getType()));
}
// convert float type to same-size int type
static Type *JL_INTT(Type *t)
{
if (t->isIntegerTy())
return t;
if (t->isPointerTy())
return T_size;
if (t == T_float32) return T_int32;
assert(t == T_float64);
return T_int64;
}
// reinterpret-cast to int
static Value *JL_INT(Value *v)
{
Type *t = v->getType();
if (t->isIntegerTy())
return v;
if (t->isPointerTy())
return builder.CreatePtrToInt(v, JL_INTT(t));
return builder.CreateBitCast(v, JL_INTT(t));
}
static Value *uint_cnvt(Type *to, Value *x)
{
Type *t = x->getType();
if (t == to) return x;
if (to->getPrimitiveSizeInBits() < x->getType()->getPrimitiveSizeInBits())
return builder.CreateTrunc(x, to);
return builder.CreateZExt(x, to);
}
static Constant *julia_const_to_llvm(jl_value_t *e)
{
jl_value_t *jt = jl_typeof(e);
jl_datatype_t *bt = (jl_datatype_t*)jt;
if (!jl_is_datatype(bt))
return NULL;
if (e == jl_true)
return ConstantInt::get(T_int1, 1);
else if (e == jl_false)
return ConstantInt::get(T_int1, 0);
if (jl_is_bitstype(jt)) {
int nb = jl_datatype_size(bt);
//APInt copies the data (but only as much as needed, so it doesn't matter if ArrayRef extends too far)
APInt val = APInt(8*nb,ArrayRef<uint64_t>((uint64_t*)jl_data_ptr(e),(nb+7)/8));
if (jl_is_float(e)) {
#ifdef LLVM33
#define LLVM_FP(a,b) APFloat(a,b)
#else
#define LLVM_FP(a,b) APFloat(b,true)
#endif
#ifndef DISABLE_FLOAT16
if (nb == 2)
return ConstantFP::get(jl_LLVMContext,LLVM_FP(APFloat::IEEEhalf,val));
else
#endif
if (nb == 4)
return ConstantFP::get(jl_LLVMContext,LLVM_FP(APFloat::IEEEsingle,val));
else if (nb == 8)
return ConstantFP::get(jl_LLVMContext,LLVM_FP(APFloat::IEEEdouble,val));
else if (nb == 16)
return ConstantFP::get(jl_LLVMContext,LLVM_FP(APFloat::IEEEquad,val));
// If we have a floating point type that's not hardware supported, just treat it like an integer for LLVM purposes
}
Constant *asInt = ConstantInt::get(IntegerType::get(jl_LLVMContext,8*nb),val);
if (jl_is_cpointer_type(bt)) {
return ConstantExpr::getIntToPtr(asInt, julia_type_to_llvm((jl_value_t*)bt));
}
return asInt;
}
else if (jl_isbits(jt)) {
size_t nf = jl_tuple_len(bt->names), i;
Constant **fields = (Constant**)alloca(nf * sizeof(Constant*));
jl_value_t *f=NULL;
JL_GC_PUSH1(&f);
for(i=0; i < nf; i++) {
f = jl_get_nth_field(e, i);
Constant *val;
if (f == jl_true)
val = ConstantInt::get(T_int8,1);
else if (f == jl_false)
val = ConstantInt::get(T_int8,0);
else
val = julia_const_to_llvm(f);
if (val == NULL) {
JL_GC_POP();
return NULL;
}
fields[i] = val;
}
JL_GC_POP();
Type *t = julia_struct_to_llvm(jt);
if (t == T_void || t->isEmptyTy())
return UndefValue::get(NoopType);
StructType *st = dyn_cast<StructType>(t);
assert(st);
return ConstantStruct::get(st, ArrayRef<Constant*>(fields,nf));
}
return NULL;
}
static Value *emit_unboxed(jl_value_t *e, jl_codectx_t *ctx)
{
Constant *c = julia_const_to_llvm(e);
if (c) return mark_julia_type(c, jl_typeof(e));
return emit_expr(e, ctx, false);
}
static Type *jl_llvmtuple_eltype(Type *tuple, jl_value_t *jt, size_t i)
{
Type *ety = NULL;
if (tuple->isArrayTy())
ety = dyn_cast<ArrayType>(tuple)->getElementType();
else if (tuple->isVectorTy())
ety = dyn_cast<VectorType>(tuple)->getElementType();
else if (tuple == T_void)
ety = T_void;
else if (tuple->isStructTy())
ety = julia_type_to_llvm(jl_tupleref((jl_tuple_t*)jt,i));
else
assert(false);
return ety;
}
static Value *ghostValue(jl_value_t *ty);
// emit code to unpack a raw value from a box
static Value *emit_unbox(Type *to, Value *x, jl_value_t *jt)
{
Type *ty = (x == NULL) ? NULL : x->getType();
if (x == NULL || ty == NoopType) {
if (to == T_void) {
if (jt != NULL)
return (ty == NoopType && julia_type_of(x) == jt) ? x : ghostValue(jt);
return NULL;
}
return UndefValue::get(to);
}
if (ty != jl_pvalue_llvmt) {
// bools are stored internally as int8 (for now)
if (ty == T_int1 && to == T_int8)
return builder.CreateZExt(x, T_int8);
if (ty->isPointerTy() && !to->isPointerTy())
return builder.CreatePtrToInt(x, to);
if (!ty->isPointerTy() && to->isPointerTy())
return builder.CreateIntToPtr(x, to);
if (ty != to) {
// this can happen when a branch yielding a different type ends
// up being dead code, and type inference knows that the other
// branch's type is the only one that matters.
assert(ty == T_void);
return UndefValue::get(to);
}
return x;
}
if ( (jt != NULL && jl_is_tuple(jt)) || to->isVectorTy() || to->isArrayTy() ||
(to->isStructTy() && dyn_cast<StructType>(to)->isLiteral()) ) {
assert(jt != 0);
assert(jl_is_tuple(jt));
assert(to != T_void);
Value *tpl = UndefValue::get(to);
for (size_t i = 0; i < jl_tuple_len(jt); ++i) {
Type *ety = jl_llvmtuple_eltype(to,jt,i);
if (ety == T_void)
continue;
Value *ref = emit_tupleref(x,ConstantInt::get(T_size,i+1),jt,NULL);
Value *elt = emit_unbox(ety,ref,jl_tupleref(jt,i));
tpl = emit_tupleset(tpl,ConstantInt::get(T_size,i+1),elt,jt,NULL);
}
return tpl;
}
Value *p = data_pointer(x);
if (to == T_int1) {
// bools stored as int8, so an extra Trunc is needed to get an int1
return builder.CreateTrunc(builder.
CreateLoad(builder.
CreateBitCast(p, T_pint8), false),
T_int1);
}
if (to->isStructTy() && !to->isSized()) {
// empty struct - TODO - is this a good way to represent it?
assert(to != T_void);
return UndefValue::get(to);
}
return builder.CreateLoad(builder.CreateBitCast(p, to->getPointerTo()), false);
}
// unbox trying to determine type automatically
static Value *auto_unbox(jl_value_t *x, jl_codectx_t *ctx)
{
Value *v = emit_unboxed(x, ctx);
if (v->getType() != jl_pvalue_llvmt) {
return v;
}
jl_value_t *bt = expr_type(x, ctx);
if (!jl_is_bitstype(bt)) {
if (jl_is_symbol(x)) {
std::map<jl_sym_t*,jl_varinfo_t>::iterator it = ctx->vars.find((jl_sym_t*)x);
if (it != ctx->vars.end())
bt = (*it).second.declType;
}
if (bt == NULL || !jl_is_bitstype(bt)) {
// TODO: make sure this code is valid; hopefully it is
// unreachable but it should still be well-formed.
emit_error("auto_unbox: unable to determine argument type", ctx);
// This isn't correct but probably most likely to cause
// the least amount of trouble
return UndefValue::get(T_int64);
}
}
Type *to = julia_type_to_llvm(bt);
if (to == NULL || to == jl_pvalue_llvmt) {
unsigned int nb = jl_datatype_size(bt)*8;
to = IntegerType::get(jl_LLVMContext, nb);
}
if (to == T_void) {
return NULL;
}
return emit_unbox(to, v, bt);
}
// figure out how many bits a bitstype has at compile time, or -1
static int try_to_determine_bitstype_nbits(jl_value_t *targ, jl_codectx_t *ctx)
{
jl_value_t *et = expr_type(targ, ctx);
if (jl_is_type_type(et)) {
jl_value_t *p = jl_tparam0(et);
if (p == (jl_value_t*)jl_bool_type)
return 1;
if (jl_is_bitstype(p))
return jl_datatype_size(p)*8;
if (jl_is_typevar(p)) {
jl_value_t *ub = ((jl_tvar_t*)p)->ub;
if (jl_is_bitstype(ub))
return jl_datatype_size(ub)*8;
}
}
return -1;
}
// unbox using user-specified type
static Value *generic_unbox(jl_value_t *targ, jl_value_t *x, jl_codectx_t *ctx)
{
jl_value_t *et = expr_type(targ, ctx);
if (jl_is_type_type(et)) {
jl_value_t *p = jl_tparam0(et);
if (jl_is_leaf_type(p)) {
Type *to = julia_type_to_llvm(p);
return emit_unbox(to, emit_unboxed(x,ctx), p);
}
}
int nb = try_to_determine_bitstype_nbits(targ, ctx);
if (nb == -1) {
jl_value_t *bt=NULL;
JL_TRY {
bt = jl_interpret_toplevel_expr_in(ctx->module, targ,
&jl_tupleref(ctx->sp,0),
jl_tuple_len(ctx->sp)/2);
}
JL_CATCH {
}
if (bt == NULL || !jl_is_bitstype(bt))
jl_error("unbox: could not determine argument size");
nb = (bt==(jl_value_t*)jl_bool_type) ? 1 : jl_datatype_size(bt)*8;
}
Type *to = IntegerType::get(jl_LLVMContext, nb);
return emit_unbox(to, emit_unboxed(x, ctx), et);
}
static Value *generic_box(jl_value_t *targ, jl_value_t *x, jl_codectx_t *ctx)
{
int nb = try_to_determine_bitstype_nbits(targ, ctx);
Type *llvmt = NULL;
jl_value_t *bt = NULL;
jl_value_t *et = expr_type(targ, ctx);
if (jl_is_type_type(et) && jl_is_leaf_type(jl_tparam0(et)) &&
jl_is_bitstype(jl_tparam0(et))) {
bt = jl_tparam0(et);
}
else {
JL_TRY {
bt = jl_interpret_toplevel_expr_in(ctx->module, targ,
&jl_tupleref(ctx->sp,0),
jl_tuple_len(ctx->sp)/2);
}
JL_CATCH {
}
}
if (bt == NULL) {
}
else if (!jl_is_bitstype(bt)) {
jl_error("box: expected bits type as first argument");
}
else {
llvmt = julia_type_to_llvm(bt);
if (nb == -1)
nb = (bt==(jl_value_t*)jl_bool_type) ? 1 : jl_datatype_size(bt)*8;
}
if (nb == -1)
jl_error("box: could not determine argument size");
if (llvmt == NULL)
llvmt = IntegerType::get(jl_LLVMContext, nb);
Value *vx = auto_unbox(x, ctx);
Type *vxt = vx->getType();
//if (vx->getType()->getPrimitiveSizeInBits() != (unsigned)nb)
// jl_errorf("box: expected argument with %d bits, got %d", nb,
// vx->getType()->getPrimitiveSizeInBits());
if (vxt != llvmt) {
if (vxt == T_void)
return vx;
if (vxt->isPointerTy() && !llvmt->isPointerTy()) {
vx = builder.CreatePtrToInt(vx, llvmt);
}
else if (!vxt->isPointerTy() && llvmt->isPointerTy()) {
vx = builder.CreateIntToPtr(vx, llvmt);
}
else if (llvmt == T_int1) {
vx = builder.CreateTrunc(vx, llvmt);
}
else if (vxt == T_int1 && llvmt == T_int8) {
vx = builder.CreateZExt(vx, llvmt);
}
else {
if (vxt->getPrimitiveSizeInBits() != llvmt->getPrimitiveSizeInBits()) {
emit_error("box: argument is of incorrect size", ctx);
return vx;
}
vx = builder.CreateBitCast(vx, llvmt);
}
}
if (bt != NULL) {
return mark_julia_type(vx, bt);
}
// dynamically-determined type; evaluate.
return allocate_box_dynamic(emit_expr(targ, ctx), ConstantInt::get(T_size,(nb+7)/8), vx);
}
static Type *staticeval_bitstype(jl_value_t *targ, const char *fname, jl_codectx_t *ctx)
{
jl_value_t *bt =
jl_interpret_toplevel_expr_in(ctx->module, targ,
&jl_tupleref(ctx->sp,0),
jl_tuple_len(ctx->sp)/2);
if (!jl_is_bitstype(bt))
jl_errorf("%s: expected bits type as first argument", fname);
Type *to = julia_type_to_llvm(bt);
if (to == NULL) {
unsigned int nb = jl_datatype_size(bt)*8;
to = IntegerType::get(jl_LLVMContext, nb);
}
return to;
}
static Value *generic_trunc(jl_value_t *targ, jl_value_t *x, jl_codectx_t *ctx)
{
Type *to = staticeval_bitstype(targ, "trunc_int", ctx);
return builder.CreateTrunc(JL_INT(auto_unbox(x,ctx)), to);
}
static Value *generic_sext(jl_value_t *targ, jl_value_t *x, jl_codectx_t *ctx)
{
Type *to = staticeval_bitstype(targ, "sext_int", ctx);
return builder.CreateSExt(JL_INT(auto_unbox(x,ctx)), to);
}
static Value *generic_zext(jl_value_t *targ, jl_value_t *x, jl_codectx_t *ctx)
{
Type *to = staticeval_bitstype(targ, "zext_int", ctx);
return builder.CreateZExt(JL_INT(auto_unbox(x,ctx)), to);
}
static Value *emit_eqfsi64(Value *x, Value *y)
{
x = FP(x);
Value *fy = JL_INT(y);
return builder.CreateAnd
(builder.CreateFCmpOEQ(x, builder.CreateSIToFP(fy, T_float64)),
builder.CreateICmpEQ(fy, builder.CreateFPToSI
(builder.CreateSIToFP(fy, T_float64),
T_int64)));
}
static Value *emit_eqfui64(Value *x, Value *y)
{
x = FP(x);
Value *fy = JL_INT(y);
return builder.CreateAnd
(builder.CreateFCmpOEQ(x, builder.CreateUIToFP(fy, T_float64)),
builder.CreateICmpEQ(fy, builder.CreateFPToUI
(builder.CreateUIToFP(fy, T_float64),
T_int64)));
}
static Value *emit_checked_fptosi(Type *to, Value *x, jl_codectx_t *ctx)
{
x = FP(x);
Value *v = builder.CreateFPToSI(x, to);
if (x->getType() == T_float32 && to == T_int32) {
raise_exception_unless
(builder.CreateFCmpOEQ(builder.CreateFPExt(x, T_float64),
builder.CreateSIToFP(v, T_float64)),
prepare_global(jlinexacterr_var), ctx);
}
else {
Value *xx = x, *vv = v;
if (x->getType() == T_float32)
xx = builder.CreateFPExt(x, T_float64);
if (to->getPrimitiveSizeInBits() < 64)
vv = builder.CreateSExt(v, T_int64);
raise_exception_unless(emit_eqfsi64(xx, vv), prepare_global(jlinexacterr_var), ctx);
}
return v;
}
static Value *emit_checked_fptosi(jl_value_t *targ, Value *x, jl_codectx_t *ctx)
{
return emit_checked_fptosi(staticeval_bitstype(targ, "checked_fptosi", ctx), x, ctx);
}
static Value *emit_checked_fptoui(Type *to, Value *x, jl_codectx_t *ctx)
{
x = FP(x);
Value *v = builder.CreateFPToUI(x, to);
if (x->getType() == T_float32 && to == T_int32) {
raise_exception_unless
(builder.CreateFCmpOEQ(builder.CreateFPExt(x, T_float64),
builder.CreateUIToFP(v, T_float64)),
prepare_global(jlinexacterr_var), ctx);
}
else {
Value *xx = x, *vv = v;
if (x->getType() == T_float32)
xx = builder.CreateFPExt(x, T_float64);
if (to->getPrimitiveSizeInBits() < 64)
vv = builder.CreateZExt(v, T_int64);
raise_exception_unless(emit_eqfui64(xx, vv), prepare_global(jlinexacterr_var), ctx);
}
return v;
}
static Value *emit_checked_fptoui(jl_value_t *targ, Value *x, jl_codectx_t *ctx)
{
return emit_checked_fptoui(staticeval_bitstype(targ, "checked_fptoui", ctx), x, ctx);
}
static Value *emit_iround(Value *x, bool issigned, jl_codectx_t *ctx)
{
int nmantissa, expoffs, expbits;
int64_t topbit;
Type *intt, *floatt;
Value *bits = JL_INT(x);
Value *max, *min;
if (bits->getType()->getPrimitiveSizeInBits() == 32) {
nmantissa = 23;
expoffs = 127;
expbits = 0xff;
topbit = BIT31;
intt = T_int32; floatt = T_float32;
if (issigned) {
max = ConstantFP::get(floatt, 2.1474835e9);
min = ConstantFP::get(floatt, -2.1474836e9);
}
else {
max = ConstantFP::get(floatt, 4.294967e9);
// most negative number that truncates to zero
min = ConstantFP::get(floatt, -0.99999994);
}
}
else {
nmantissa = 52;
expoffs = 1023;
expbits = 0x7ff;
topbit = BIT63;
intt = T_int64; floatt = T_float64;
if (issigned) {
max = ConstantFP::get(floatt, 9.223372036854775e18);
min = ConstantFP::get(floatt, -9.223372036854776e18);
}
else {
max = ConstantFP::get(floatt, 1.844674407370955e19);
min = ConstantFP::get(floatt, -0.9999999999999999);
}
}
// itrunc(x + copysign(0.5,x))
// values with exponent >= nbits are already integers, and this
// rounding method doesn't always give the right answer there.
x = FP(x);
Value *expo = builder.CreateAShr(bits, ConstantInt::get(intt,nmantissa));
expo = builder.CreateAnd(expo, ConstantInt::get(intt,expbits));
Value *isint = builder.CreateICmpSGE(expo,
ConstantInt::get(intt,expoffs+nmantissa));
Value *half = builder.CreateBitCast(ConstantFP::get(floatt, 0.5), intt);
Value *signedhalf =
builder.CreateOr(half,
builder.CreateAnd(bits,
ConstantInt::get(intt,topbit)));
Value *sum = builder.CreateFAdd(x,
builder.CreateBitCast(signedhalf, floatt));
Value *src = builder.
CreateSelect(builder.
CreateOr(isint, builder.
// need to give 0 for -0.5 < x < 0.5 (exponent < -1)
// otherwise iround(prevfloat(0.5)) == 1
CreateICmpSLT(expo,
ConstantInt::get(intt,expoffs-1))),
x, sum);
raise_exception_unless(builder.CreateAnd(builder.CreateFCmpOLE(src, max),
builder.CreateFCmpOGE(src, min)),
prepare_global(jlinexacterr_var), ctx);
if (issigned)
return builder.CreateFPToSI(src, intt);
else
return builder.CreateFPToUI(src, intt);
}
static Value *emit_pointerref(jl_value_t *e, jl_value_t *i, jl_codectx_t *ctx)
{
jl_value_t *aty = expr_type(e, ctx);
if (!jl_is_cpointer_type(aty))
jl_error("pointerref: expected pointer type as first argument");
jl_value_t *ety = jl_tparam0(aty);
if (jl_is_typevar(ety))
jl_error("pointerref: invalid pointer");
if (expr_type(i, ctx) != (jl_value_t*)jl_long_type) {
jl_error("pointerref: invalid index type");
}
Value *thePtr = auto_unbox(e,ctx);
Value *idx = emit_unbox(T_size, emit_unboxed(i, ctx), (jl_value_t*)jl_long_type);
Value *im1 = builder.CreateSub(idx, ConstantInt::get(T_size, 1));
if (!jl_isbits(ety)) {
if (ety == (jl_value_t*)jl_any_type)
return builder.CreateLoad(builder.CreateGEP(
builder.CreateBitCast(thePtr, jl_ppvalue_llvmt),
im1));
if (!jl_is_structtype(ety) || jl_is_array_type(ety) || !jl_is_leaf_type(ety)) {
emit_error("pointerref: invalid pointer type", ctx);
return NULL;
}
assert(jl_is_datatype(ety));
uint64_t size = ((jl_datatype_t*)ety)->size;
Value *strct =
builder.CreateCall(prepare_call(jlallocobj_func),
ConstantInt::get(T_size,
sizeof(void*)+size));
builder.CreateStore(literal_pointer_val((jl_value_t*)ety),
emit_nthptr_addr(strct, (size_t)0));
im1 = builder.CreateMul(im1, ConstantInt::get(T_size, size));
thePtr = builder.CreateGEP(builder.CreateBitCast(thePtr, T_pint8), im1);
builder.CreateMemCpy(builder.CreateBitCast(emit_nthptr_addr(strct, (size_t)1), T_pint8),
thePtr, size, 1);
return mark_julia_type(strct, ety);
}
return typed_load(thePtr, im1, ety, ctx);
}
// e[i] = x
static Value *emit_pointerset(jl_value_t *e, jl_value_t *x, jl_value_t *i, jl_codectx_t *ctx)
{
jl_value_t *aty = expr_type(e, ctx);
if (!jl_is_cpointer_type(aty))
jl_error("pointerset: expected pointer type as first argument");
jl_value_t *ety = jl_tparam0(aty);
if (jl_is_typevar(ety))
jl_error("pointerset: invalid pointer");
jl_value_t *xty = expr_type(x, ctx);
Value *val=NULL;
if (!jl_subtype(xty, ety, 0)) {
val = emit_expr(x,ctx);
emit_typecheck(val, ety, "pointerset: type mismatch in assign", ctx);
}
if (expr_type(i, ctx) != (jl_value_t*)jl_long_type)
jl_error("pointerset: invalid index type");
Value *idx = emit_unbox(T_size, emit_unboxed(i, ctx),(jl_value_t*)jl_long_type);
Value *im1 = builder.CreateSub(idx, ConstantInt::get(T_size, 1));
Value *thePtr = auto_unbox(e,ctx);
if (!jl_isbits(ety) && ety != (jl_value_t*)jl_any_type) {
if (!jl_is_structtype(ety) || jl_is_array_type(ety) || !jl_is_leaf_type(ety)) {
emit_error("pointerset: invalid pointer type", ctx);
return NULL;
}
if (val==NULL) val = emit_expr(x,ctx,true,true);
assert(val->getType() == jl_pvalue_llvmt); //Boxed
assert(jl_is_datatype(ety));
uint64_t size = ((jl_datatype_t*)ety)->size;
builder.CreateMemCpy(builder.CreateGEP(builder.CreateBitCast(thePtr, T_pint8), im1),
builder.CreateBitCast(emit_nthptr_addr(val, (size_t)1),T_pint8), size, 1);
}
else {
if (val == NULL) {
if (ety == (jl_value_t*)jl_any_type)
val = emit_expr(x,ctx);
else
val = emit_unboxed(x,ctx);
}
(void)typed_store(thePtr, im1, val, ety, ctx);
}
return mark_julia_type(thePtr, aty);
}
static Value *emit_srem(Value *x, Value *den, jl_codectx_t *ctx)
{
Type *t = den->getType();
raise_exception_unless(builder.CreateICmpNE(den, ConstantInt::get(t,0)),
prepare_global(jldiverr_var), ctx);
BasicBlock *m1BB = BasicBlock::Create(getGlobalContext(),"minus1",ctx->f);
BasicBlock *okBB = BasicBlock::Create(getGlobalContext(),"oksrem",ctx->f);
BasicBlock *cont = BasicBlock::Create(getGlobalContext(),"after_srem",ctx->f);
PHINode *ret = PHINode::Create(t, 2);
builder.CreateCondBr(builder.CreateICmpEQ(den,ConstantInt::get(t,-1,true)),
m1BB, okBB);
builder.SetInsertPoint(m1BB);
builder.CreateBr(cont);
builder.SetInsertPoint(okBB);
Value *sremval = builder.CreateSRem(x, den);
builder.CreateBr(cont);
builder.SetInsertPoint(cont);
ret->addIncoming(// rem(typemin, -1) is undefined
ConstantInt::get(t,0), m1BB);
ret->addIncoming(sremval, okBB);
builder.Insert(ret);
return ret;
}
static Value *emit_smod(Value *x, Value *den, jl_codectx_t *ctx)
{
Type *t = den->getType();
raise_exception_unless(builder.CreateICmpNE(den, ConstantInt::get(t,0)),
prepare_global(jldiverr_var), ctx);
BasicBlock *m1BB = BasicBlock::Create(getGlobalContext(),"minus1",ctx->f);
BasicBlock *okBB = BasicBlock::Create(getGlobalContext(),"oksmod",ctx->f);
BasicBlock *cont = BasicBlock::Create(getGlobalContext(),"after_smod",ctx->f);
PHINode *ret = PHINode::Create(t, 2);
builder.CreateCondBr(builder.CreateICmpEQ(den,ConstantInt::get(t,-1,true)),
m1BB, okBB);
builder.SetInsertPoint(m1BB);
builder.CreateBr(cont);
builder.SetInsertPoint(okBB);
Value *rem = builder.CreateSRem(x,den);
Value *smodval =
builder.
CreateSelect(builder.CreateICmpEQ(builder.CreateICmpSLT(x,ConstantInt::get(t,0)),
builder.CreateICmpSLT(den,ConstantInt::get(t,0))),
// mod == rem for arguments with same sign
rem,
builder.CreateSRem(builder.CreateAdd(den,rem),den));
builder.CreateBr(cont);
builder.SetInsertPoint(cont);
ret->addIncoming(// rem(typemin, -1) is undefined
ConstantInt::get(t,0), m1BB);
ret->addIncoming(smodval, okBB);
builder.Insert(ret);
return ret;
}
#define HANDLE(intr,n) \
case intr: if (nargs!=n) jl_error(#intr": wrong number of arguments");
static Value *emit_intrinsic(intrinsic f, jl_value_t **args, size_t nargs,
jl_codectx_t *ctx)
{
switch (f) {
case ccall: return emit_ccall(args, nargs, ctx);
case cglobal: return emit_cglobal(args, nargs, ctx);
HANDLE(box,2) return generic_box(args[1], args[2], ctx);
HANDLE(unbox,2) return generic_unbox(args[1], args[2], ctx);
HANDLE(trunc_int,2) return generic_trunc(args[1], args[2], ctx);
HANDLE(sext_int,2) return generic_sext(args[1], args[2], ctx);
HANDLE(zext_int,2) return generic_zext(args[1], args[2], ctx);
HANDLE(pointerref,2) return emit_pointerref(args[1], args[2], ctx);
HANDLE(pointerset,3) return emit_pointerset(args[1], args[2], args[3], ctx);
HANDLE(pointertoref,1) {
Value *p = auto_unbox(args[1], ctx);
if (p->getType()->isIntegerTy()) {
return builder.CreateIntToPtr(p, jl_pvalue_llvmt);
}
return builder.CreateBitCast(p, jl_pvalue_llvmt);
}
HANDLE(checked_fptosi,2) {
Value *x = FP(auto_unbox(args[2], ctx));
return emit_checked_fptosi(args[1], x, ctx);
}
HANDLE(checked_fptoui,2) {
Value *x = FP(auto_unbox(args[2], ctx));
return emit_checked_fptoui(args[1], x, ctx);
}
HANDLE(uitofp,2) return builder.CreateUIToFP(JL_INT(auto_unbox(args[2],ctx)), FTnbits(try_to_determine_bitstype_nbits(args[1],ctx)));
HANDLE(sitofp,2) return builder.CreateSIToFP(JL_INT(auto_unbox(args[2],ctx)), FTnbits(try_to_determine_bitstype_nbits(args[1],ctx)));
HANDLE(fptrunc,2) return builder.CreateFPTrunc(FP(auto_unbox(args[2],ctx)), FTnbits(try_to_determine_bitstype_nbits(args[1],ctx)));
HANDLE(fpext,2) {
// when extending a float32 to a float64, we need to force
// rounding to single precision first. the reason is that it's
// fine to keep working in extended precision as long as it's
// understood that everything is implicitly rounded to 23 bits,
// but if we start looking at more bits we need to actually do the
// rounding first instead of carrying around incorrect low bits.
Value *x = auto_unbox(args[2],ctx);
builder.CreateStore(FP(x), builder.CreateBitCast(prepare_global(jlfloattemp_var),FT(x->getType())->getPointerTo()), true);
return builder.CreateFPExt(builder.CreateLoad(builder.CreateBitCast(prepare_global(jlfloattemp_var),FT(x->getType())->getPointerTo()), true),
FTnbits(try_to_determine_bitstype_nbits(args[1],ctx)));
}
HANDLE(select_value,3) {
Value *isfalse = emit_condition(args[1], "select_value", ctx);
jl_value_t *t1 = expr_type(args[2], ctx);
Type *llt1 = julia_type_to_llvm(t1);
jl_value_t *t2 = expr_type(args[3], ctx);
Type *llt2 = julia_type_to_llvm(t2);
int argStart = ctx->argDepth;
Value *ifelse_result;
if (llt1 == jl_pvalue_llvmt && llt2 == jl_pvalue_llvmt) {
Value *arg1 = emit_expr(args[3], ctx, false);
if (arg1->getType() == jl_pvalue_llvmt)
make_gcroot(arg1, ctx);
ifelse_result = builder.CreateSelect(isfalse,
arg1,
emit_expr(args[2], ctx, false));
}
else if (t1 == t2 && llt1 == llt2 && llt1 != jl_pvalue_llvmt) {
ifelse_result = builder.CreateSelect(isfalse,
auto_unbox(args[3], ctx),
auto_unbox(args[2], ctx));
}
else {
Value *arg1 = boxed(emit_expr(args[3],ctx,false), ctx, expr_type(args[3],ctx));
make_gcroot(arg1, ctx);
ifelse_result = builder.CreateSelect(isfalse,
arg1,
boxed(emit_expr(args[2],ctx,false), ctx, expr_type(args[2],ctx)));
}
ctx->argDepth = argStart;
return ifelse_result;
}
default: ;
}
if (nargs < 1) jl_error("invalid intrinsic call");
Value *x = auto_unbox(args[1], ctx);
Value *y = NULL;
if (nargs>1) {
y = auto_unbox(args[2], ctx);
}
Type *t = x->getType();
if (t == T_void || (y && y->getType() == T_void))
return t == T_void ? x : y;
Value *fy;
Value *den;
Value *typemin;
switch (f) {
HANDLE(neg_int,1) return builder.CreateSub(ConstantInt::get(t, 0), JL_INT(x));
HANDLE(add_int,2) return builder.CreateAdd(JL_INT(x), JL_INT(y));
HANDLE(sub_int,2) return builder.CreateSub(JL_INT(x), JL_INT(y));
HANDLE(mul_int,2) return builder.CreateMul(JL_INT(x), JL_INT(y));
HANDLE(sdiv_int,2)
den = JL_INT(y);
t = den->getType();
x = JL_INT(x);
typemin = builder.CreateShl(ConstantInt::get(t,1),
x->getType()->getPrimitiveSizeInBits()-1);
raise_exception_unless(builder.
CreateAnd(builder.
CreateICmpNE(den, ConstantInt::get(t,0)),
builder.
CreateOr(builder.
CreateICmpNE(den,
ConstantInt::get(t,-1,true)),
builder.CreateICmpNE(x, typemin))),
prepare_global(jldiverr_var), ctx);
return builder.CreateSDiv(x, den);
HANDLE(udiv_int,2)
den = JL_INT(y);
t = den->getType();
raise_exception_unless(builder.CreateICmpNE(den, ConstantInt::get(t,0)),
prepare_global(jldiverr_var), ctx);
return builder.CreateUDiv(JL_INT(x), den);
HANDLE(srem_int,2)
return emit_srem(JL_INT(x), JL_INT(y), ctx);
HANDLE(urem_int,2)
den = JL_INT(y);
t = den->getType();
raise_exception_unless(builder.CreateICmpNE(den, ConstantInt::get(t,0)),
prepare_global(jldiverr_var), ctx);
return builder.CreateURem(JL_INT(x), den);
HANDLE(smod_int,2)
return emit_smod(JL_INT(x), JL_INT(y), ctx);
HANDLE(neg_float,1) return builder.CreateFMul(ConstantFP::get(FT(t), -1.0), FP(x));
HANDLE(add_float,2) return builder.CreateFAdd(FP(x), FP(y));
HANDLE(sub_float,2) return builder.CreateFSub(FP(x), FP(y));
HANDLE(mul_float,2) return builder.CreateFMul(FP(x), FP(y));
HANDLE(div_float,2) return builder.CreateFDiv(FP(x), FP(y));
HANDLE(rem_float,2) return builder.CreateFRem(FP(x), FP(y));
HANDLE(checked_sadd,2)
HANDLE(checked_uadd,2)
HANDLE(checked_ssub,2)
HANDLE(checked_usub,2)
HANDLE(checked_smul,2)
HANDLE(checked_umul,2) {
Value *ix = JL_INT(x); Value *iy = JL_INT(y);
assert(ix->getType() == iy->getType());
Value *res = builder.CreateCall2
(Intrinsic::getDeclaration(jl_Module,
f==checked_sadd ?
Intrinsic::sadd_with_overflow :
(f==checked_uadd ?
Intrinsic::uadd_with_overflow :
(f==checked_ssub ?
Intrinsic::ssub_with_overflow :
(f==checked_usub ?
Intrinsic::usub_with_overflow :
(f==checked_smul ?
Intrinsic::smul_with_overflow :
Intrinsic::umul_with_overflow)))),
ArrayRef<Type*>(ix->getType())),
ix, iy);
Value *obit = builder.CreateExtractValue(res, ArrayRef<unsigned>(1));
raise_exception_if(obit, prepare_global(jlovferr_var), ctx);
return builder.CreateExtractValue(res, ArrayRef<unsigned>(0));
}
HANDLE(eq_int,2) return builder.CreateICmpEQ(JL_INT(x), JL_INT(y));
HANDLE(ne_int,2) return builder.CreateICmpNE(JL_INT(x), JL_INT(y));
HANDLE(slt_int,2) return builder.CreateICmpSLT(JL_INT(x), JL_INT(y));
HANDLE(ult_int,2) return builder.CreateICmpULT(JL_INT(x), JL_INT(y));
HANDLE(sle_int,2) return builder.CreateICmpSLE(JL_INT(x), JL_INT(y));
HANDLE(ule_int,2) return builder.CreateICmpULE(JL_INT(x), JL_INT(y));
HANDLE(eq_float,2) return builder.CreateFCmpOEQ(FP(x), FP(y));
HANDLE(ne_float,2) return builder.CreateFCmpUNE(FP(x), FP(y));
HANDLE(lt_float,2) return builder.CreateFCmpOLT(FP(x), FP(y));
HANDLE(le_float,2) return builder.CreateFCmpOLE(FP(x), FP(y));
HANDLE(eqfsi64,2) return emit_eqfsi64(x, y);
HANDLE(eqfui64,2) return emit_eqfui64(x, y);
HANDLE(ltfsi64,2) {
x = FP(x);
fy = JL_INT(y);
Value *ffy = builder.CreateSIToFP(fy, T_float64);
Value *siffy = builder.CreateFPToSI(ffy, T_int64);
return builder.CreateOr(
builder.CreateFCmpOLT(x, ffy),
builder.CreateAnd(
// ensure x < 2.0^63
builder.CreateFCmpOLT(x, ConstantFP::get(T_float64,
9.223372036854776e18)),
builder.CreateAnd(builder.CreateFCmpOEQ(x, ffy),
builder.CreateICmpSGT(fy, siffy))
)
);
}
HANDLE(ltfui64,2) {
x = FP(x);
fy = JL_INT(y);
Value *ffy = builder.CreateUIToFP(fy, T_float64);
Value *uiffy = builder.CreateFPToUI(ffy, T_int64);
return builder.CreateOr(
builder.CreateFCmpOLT(x, ffy),
builder.CreateAnd(
// ensure x < 2.0^64
builder.CreateFCmpOLT(x, ConstantFP::get(T_float64,
1.8446744073709552e19)),
builder.CreateAnd(builder.CreateFCmpOEQ(x, ffy),
builder.CreateICmpUGT(fy, uiffy))
)
);
}
HANDLE(lefsi64,2) {
x = FP(x);
fy = JL_INT(y);
Value *ffy = builder.CreateSIToFP(fy, T_float64);
return builder.CreateOr(
builder.CreateFCmpOLT(x, ffy),
builder.CreateAnd(
builder.CreateFCmpOLT(x, ConstantFP::get(T_float64,
9.223372036854776e18)),
builder.CreateAnd(
builder.CreateFCmpOEQ(x, ffy),
builder.CreateICmpSGE(fy, builder.CreateFPToSI(ffy,T_int64))
)
)
);
}
HANDLE(lefui64,2) {
x = FP(x);