mirror of
https://github.com/ldc-developers/ldc.git
synced 2025-05-01 07:30:43 +03:00
511 lines
16 KiB
C++
511 lines
16 KiB
C++
//===-- complex.cpp -------------------------------------------------------===//
|
||
//
|
||
// LDC – the LLVM D compiler
|
||
//
|
||
// This file is distributed under the BSD-style LDC license. See the LICENSE
|
||
// file for details.
|
||
//
|
||
//===----------------------------------------------------------------------===//
|
||
|
||
#include "gen/llvm.h"
|
||
|
||
#include "mtype.h"
|
||
#include "declaration.h"
|
||
|
||
#include "gen/complex.h"
|
||
#include "gen/tollvm.h"
|
||
#include "gen/llvmhelpers.h"
|
||
#include "gen/irstate.h"
|
||
#include "gen/dvalue.h"
|
||
#include "gen/logger.h"
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
llvm::StructType* DtoComplexType(Type* type)
|
||
{
|
||
Type* t = type->toBasetype();
|
||
LLType* base = DtoComplexBaseType(t);
|
||
llvm::SmallVector<LLType*, 2> types;
|
||
types.push_back(base);
|
||
types.push_back(base);
|
||
return llvm::StructType::get(gIR->context(), types);
|
||
}
|
||
|
||
LLType* DtoComplexBaseType(Type* t)
|
||
{
|
||
TY ty = t->toBasetype()->ty;
|
||
if (ty == Tcomplex32) {
|
||
return LLType::getFloatTy(gIR->context());
|
||
}
|
||
else if (ty == Tcomplex64) {
|
||
return LLType::getDoubleTy(gIR->context());
|
||
}
|
||
else if (ty == Tcomplex80) {
|
||
if ((global.params.cpu == ARCHx86) || (global.params.cpu == ARCHx86_64))
|
||
return LLType::getX86_FP80Ty(gIR->context());
|
||
else
|
||
return LLType::getDoubleTy(gIR->context());
|
||
}
|
||
else {
|
||
assert(0);
|
||
}
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
LLConstant* DtoConstComplex(Type* _ty, longdouble re, longdouble im)
|
||
{
|
||
TY ty = _ty->toBasetype()->ty;
|
||
|
||
Type* base = 0;
|
||
if (ty == Tcomplex32) {
|
||
base = Type::tfloat32;
|
||
}
|
||
else if (ty == Tcomplex64) {
|
||
base = Type::tfloat64;
|
||
}
|
||
else if (ty == Tcomplex80) {
|
||
base = Type::tfloat80;
|
||
}
|
||
|
||
std::vector<LLConstant*> inits;
|
||
inits.push_back(DtoConstFP(base, re));
|
||
inits.push_back(DtoConstFP(base, im));
|
||
|
||
return llvm::ConstantStruct::get(DtoComplexType(_ty), inits);
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
LLValue* DtoRealPart(DValue* val)
|
||
{
|
||
assert(0);
|
||
return gIR->ir->CreateExtractElement(val->getRVal(), DtoConstUint(0), "tmp");
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
LLValue* DtoImagPart(DValue* val)
|
||
{
|
||
assert(0);
|
||
return gIR->ir->CreateExtractElement(val->getRVal(), DtoConstUint(1), "tmp");
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
DValue* DtoComplex(Loc& loc, Type* to, DValue* val)
|
||
{
|
||
LLType* complexTy = DtoType(to);
|
||
|
||
Type* baserety;
|
||
Type* baseimty;
|
||
TY ty = to->toBasetype()->ty;
|
||
if (ty == Tcomplex32) {
|
||
baserety = Type::tfloat32;
|
||
baseimty = Type::timaginary32;
|
||
} else if (ty == Tcomplex64) {
|
||
baserety = Type::tfloat64;
|
||
baseimty = Type::timaginary64;
|
||
} else if (ty == Tcomplex80) {
|
||
baserety = Type::tfloat80;
|
||
baseimty = Type::timaginary80;
|
||
}
|
||
else {
|
||
assert(0);
|
||
}
|
||
|
||
LLValue *re, *im;
|
||
DtoGetComplexParts(loc, to, val, re, im);
|
||
|
||
if(!re)
|
||
re = LLConstant::getNullValue(DtoType(baserety));
|
||
if(!im)
|
||
im = LLConstant::getNullValue(DtoType(baseimty));
|
||
|
||
LLValue* res = DtoAggrPair(complexTy, re, im);
|
||
|
||
return new DImValue(to, res);
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
void DtoComplexSet(LLValue* c, LLValue* re, LLValue* im)
|
||
{
|
||
DtoStore(re, DtoGEPi(c,0,0,"tmp"));
|
||
DtoStore(im, DtoGEPi(c,0,1,"tmp"));
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
void DtoGetComplexParts(Loc& loc, Type* to, DValue* val, DValue*& re, DValue*& im)
|
||
{
|
||
Type* baserety;
|
||
Type* baseimty;
|
||
TY ty = to->toBasetype()->ty;
|
||
if (ty == Tcomplex32) {
|
||
baserety = Type::tfloat32;
|
||
baseimty = Type::timaginary32;
|
||
} else if (ty == Tcomplex64) {
|
||
baserety = Type::tfloat64;
|
||
baseimty = Type::timaginary64;
|
||
} else if (ty == Tcomplex80) {
|
||
baserety = Type::tfloat80;
|
||
baseimty = Type::timaginary80;
|
||
}
|
||
else {
|
||
assert(0);
|
||
}
|
||
|
||
Type* t = val->getType()->toBasetype();
|
||
|
||
if (t->iscomplex()) {
|
||
DValue* v = DtoCastComplex(loc, val, to);
|
||
if (to->iscomplex()) {
|
||
if (v->isLVal()) {
|
||
LLValue *reVal = DtoGEP(v->getLVal(), DtoConstInt(0), DtoConstInt(0), ".re_part");
|
||
LLValue *imVal = DtoGEP(v->getLVal(), DtoConstInt(0), DtoConstInt(1), ".im_part");
|
||
re = new DVarValue(baserety, reVal);
|
||
im = new DVarValue(baseimty, imVal);
|
||
} else {
|
||
LLValue *reVal = gIR->ir->CreateExtractValue(v->getRVal(), 0, ".re_part");
|
||
LLValue *imVal = gIR->ir->CreateExtractValue(v->getRVal(), 1, ".im_part");
|
||
re = new DImValue(baserety, reVal);
|
||
im = new DImValue(baseimty, imVal);
|
||
}
|
||
} else
|
||
DtoGetComplexParts(loc, to, v, re, im);
|
||
}
|
||
else if (t->isimaginary()) {
|
||
re = NULL;
|
||
im = DtoCastFloat(loc, val, baseimty);
|
||
}
|
||
else if (t->isfloating()) {
|
||
re = DtoCastFloat(loc, val, baserety);
|
||
im = NULL;
|
||
}
|
||
else if (t->isintegral()) {
|
||
re = DtoCastInt(loc, val, baserety);
|
||
im = NULL;
|
||
}
|
||
else {
|
||
assert(0);
|
||
}
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
void DtoGetComplexParts(Loc& loc, Type* to, DValue* val, LLValue*& re, LLValue*& im)
|
||
{
|
||
DValue *dre, *dim;
|
||
DtoGetComplexParts(loc, to, val, dre, dim);
|
||
re = dre ? dre->getRVal() : 0;
|
||
im = dim ? dim->getRVal() : 0;
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
DValue* DtoComplexAdd(Loc& loc, Type* type, DValue* lhs, DValue* rhs)
|
||
{
|
||
llvm::Value *lhs_re, *lhs_im, *rhs_re, *rhs_im, *res_re, *res_im;
|
||
|
||
// lhs values
|
||
DtoGetComplexParts(loc, type, lhs, lhs_re, lhs_im);
|
||
// rhs values
|
||
DtoGetComplexParts(loc, type, rhs, rhs_re, rhs_im);
|
||
|
||
// add up
|
||
if(lhs_re && rhs_re)
|
||
res_re = gIR->ir->CreateFAdd(lhs_re, rhs_re, "tmp");
|
||
else if(lhs_re)
|
||
res_re = lhs_re;
|
||
else // either rhs_re or no re at all (then use any)
|
||
res_re = rhs_re;
|
||
|
||
if(lhs_im && rhs_im)
|
||
res_im = gIR->ir->CreateFAdd(lhs_im, rhs_im, "tmp");
|
||
else if(lhs_im)
|
||
res_im = lhs_im;
|
||
else // either rhs_im or no im at all (then use any)
|
||
res_im = rhs_im;
|
||
|
||
LLValue* res = DtoAggrPair(DtoType(type), res_re, res_im);
|
||
return new DImValue(type, res);
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
DValue* DtoComplexSub(Loc& loc, Type* type, DValue* lhs, DValue* rhs)
|
||
{
|
||
llvm::Value *lhs_re, *lhs_im, *rhs_re, *rhs_im, *res_re, *res_im;
|
||
|
||
// lhs values
|
||
DtoGetComplexParts(loc, type, lhs, lhs_re, lhs_im);
|
||
// rhs values
|
||
DtoGetComplexParts(loc, type, rhs, rhs_re, rhs_im);
|
||
|
||
// add up
|
||
if(lhs_re && rhs_re)
|
||
res_re = gIR->ir->CreateFSub(lhs_re, rhs_re, "tmp");
|
||
else if(lhs_re)
|
||
res_re = lhs_re;
|
||
else // either rhs_re or no re at all (then use any)
|
||
res_re = gIR->ir->CreateFNeg(rhs_re, "neg");
|
||
|
||
if(lhs_im && rhs_im)
|
||
res_im = gIR->ir->CreateFSub(lhs_im, rhs_im, "tmp");
|
||
else if(lhs_im)
|
||
res_im = lhs_im;
|
||
else // either rhs_im or no im at all (then use any)
|
||
res_im = gIR->ir->CreateFNeg(rhs_im, "neg");
|
||
|
||
LLValue* res = DtoAggrPair(DtoType(type), res_re, res_im);
|
||
return new DImValue(type, res);
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
DValue* DtoComplexMul(Loc& loc, Type* type, DValue* lhs, DValue* rhs)
|
||
{
|
||
llvm::Value *lhs_re, *lhs_im, *rhs_re, *rhs_im, *res_re, *res_im;
|
||
|
||
// lhs values
|
||
DtoGetComplexParts(loc, type, lhs, lhs_re, lhs_im);
|
||
// rhs values
|
||
DtoGetComplexParts(loc, type, rhs, rhs_re, rhs_im);
|
||
|
||
// mul up
|
||
llvm::Value *rere = NULL;
|
||
llvm::Value *reim = NULL;
|
||
llvm::Value *imre = NULL;
|
||
llvm::Value *imim = NULL;
|
||
|
||
if(lhs_re && rhs_re)
|
||
rere = gIR->ir->CreateFMul(lhs_re, rhs_re, "rere_mul");
|
||
if(lhs_re && rhs_im)
|
||
reim = gIR->ir->CreateFMul(lhs_re, rhs_im, "reim_mul");
|
||
if(lhs_im && rhs_re)
|
||
imre = gIR->ir->CreateFMul(lhs_im, rhs_re, "imre_mul");
|
||
if(lhs_im && rhs_im)
|
||
imim = gIR->ir->CreateFMul(lhs_im, rhs_im, "imim_mul");
|
||
|
||
if(rere && imim)
|
||
res_re = gIR->ir->CreateFSub(rere, imim, "rere_imim_sub");
|
||
else if(rere)
|
||
res_re = rere;
|
||
else if(imim)
|
||
res_re = gIR->ir->CreateFNeg(imim, "imim_neg");
|
||
else
|
||
res_re = lhs_re ? rhs_re : lhs_re; // null!
|
||
|
||
if(reim && imre)
|
||
res_im = gIR->ir->CreateFAdd(reim, imre, "reim_imre_add");
|
||
else if(reim)
|
||
res_im = reim;
|
||
else if(imre)
|
||
res_im = imre;
|
||
else
|
||
res_im = lhs_re ? rhs_im : lhs_re; // null!
|
||
|
||
LLValue* res = DtoAggrPair(DtoType(type), res_re, res_im);
|
||
return new DImValue(type, res);
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
DValue* DtoComplexDiv(Loc& loc, Type* type, DValue* lhs, DValue* rhs)
|
||
{
|
||
llvm::Value *lhs_re, *lhs_im, *rhs_re, *rhs_im, *res_re, *res_im;
|
||
|
||
// lhs values
|
||
DtoGetComplexParts(loc, type, lhs, lhs_re, lhs_im);
|
||
// rhs values
|
||
DtoGetComplexParts(loc, type, rhs, rhs_re, rhs_im);
|
||
|
||
// if divisor is only real, division is simple
|
||
if(rhs_re && !rhs_im) {
|
||
if(lhs_re)
|
||
res_re = gIR->ir->CreateFDiv(lhs_re, rhs_re, "re_divby_re");
|
||
else
|
||
res_re = lhs_re;
|
||
if(lhs_im)
|
||
res_im = gIR->ir->CreateFDiv(lhs_im, rhs_re, "im_divby_re");
|
||
else
|
||
res_im = lhs_im;
|
||
}
|
||
// if divisor is only imaginary, division is simple too
|
||
else if(!rhs_re && rhs_im) {
|
||
if(lhs_re)
|
||
res_im = gIR->ir->CreateFNeg(gIR->ir->CreateFDiv(lhs_re, rhs_im, "re_divby_im"), "neg");
|
||
else
|
||
res_im = lhs_re;
|
||
if(lhs_im)
|
||
res_re = gIR->ir->CreateFDiv(lhs_im, rhs_im, "im_divby_im");
|
||
else
|
||
res_re = lhs_im;
|
||
}
|
||
// full division
|
||
else {
|
||
llvm::Value *tmp1, *tmp2, *denom;
|
||
|
||
if(lhs_re && lhs_im) {
|
||
tmp1 = gIR->ir->CreateFMul(lhs_re, rhs_re, "rere");
|
||
tmp2 = gIR->ir->CreateFMul(lhs_im, rhs_im, "imim");
|
||
res_re = gIR->ir->CreateFAdd(tmp1, tmp2, "rere_plus_imim");
|
||
|
||
tmp1 = gIR->ir->CreateFMul(lhs_re, rhs_im, "reim");
|
||
tmp2 = gIR->ir->CreateFMul(lhs_im, rhs_re, "imre");
|
||
res_im = gIR->ir->CreateFSub(tmp2, tmp1, "imre_sub_reim");
|
||
}
|
||
else if(lhs_re) {
|
||
res_re = gIR->ir->CreateFMul(lhs_re, rhs_re, "rere");
|
||
|
||
res_im = gIR->ir->CreateFMul(lhs_re, rhs_im, "reim");
|
||
res_im = gIR->ir->CreateFNeg(res_im);
|
||
}
|
||
else if(lhs_im) {
|
||
res_re = gIR->ir->CreateFMul(lhs_im, rhs_im, "imim");
|
||
res_im = gIR->ir->CreateFMul(lhs_im, rhs_re, "imre");
|
||
}
|
||
else
|
||
assert(0 && "lhs has neither real nor imaginary part");
|
||
|
||
tmp1 = gIR->ir->CreateFMul(rhs_re, rhs_re, "rhs_resq");
|
||
tmp2 = gIR->ir->CreateFMul(rhs_im, rhs_im, "rhs_imsq");
|
||
denom = gIR->ir->CreateFAdd(tmp1, tmp2, "denom");
|
||
|
||
res_re = gIR->ir->CreateFDiv(res_re, denom, "res_re");
|
||
res_im = gIR->ir->CreateFDiv(res_im, denom, "res_im");
|
||
}
|
||
|
||
LLValue* res = DtoAggrPair(DtoType(type), res_re, res_im);
|
||
return new DImValue(type, res);
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
DValue* DtoComplexRem(Loc& loc, Type* type, DValue* lhs, DValue* rhs)
|
||
{
|
||
llvm::Value *lhs_re, *lhs_im, *rhs_re, *rhs_im, *res_re, *res_im, *divisor;
|
||
|
||
// lhs values
|
||
DtoGetComplexParts(loc, type, lhs, lhs_re, lhs_im);
|
||
// rhs values
|
||
DtoGetComplexParts(loc, type, rhs, rhs_re, rhs_im);
|
||
|
||
// Divisor can be real or imaginary but not complex
|
||
assert((rhs_re != 0) ^ (rhs_im != 0));
|
||
|
||
divisor = rhs_re ? rhs_re : rhs_im;
|
||
res_re = lhs_re ? gIR->ir->CreateFRem(lhs_re, divisor, "tmp") : lhs_re;
|
||
res_im = lhs_re ? gIR->ir->CreateFRem(lhs_im, divisor, "tmp") : lhs_im;
|
||
|
||
LLValue* res = DtoAggrPair(DtoType(type), res_re, res_im);
|
||
return new DImValue(type, res);
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
DValue* DtoComplexNeg(Loc& loc, Type* type, DValue* val)
|
||
{
|
||
llvm::Value *a, *b, *re, *im;
|
||
|
||
// values
|
||
DtoGetComplexParts(loc, type, val, a, b);
|
||
|
||
// neg up
|
||
assert(a && b);
|
||
re = gIR->ir->CreateFNeg(a, "tmp");
|
||
im = gIR->ir->CreateFNeg(b, "tmp");
|
||
|
||
LLValue* res = DtoAggrPair(DtoType(type), re, im);
|
||
return new DImValue(type, res);
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
LLValue* DtoComplexEquals(Loc& loc, TOK op, DValue* lhs, DValue* rhs)
|
||
{
|
||
Type* type = lhs->getType();
|
||
|
||
DValue *lhs_re, *lhs_im, *rhs_re, *rhs_im;
|
||
|
||
// lhs values
|
||
DtoGetComplexParts(loc, type, lhs, lhs_re, lhs_im);
|
||
// rhs values
|
||
DtoGetComplexParts(loc, type, rhs, rhs_re, rhs_im);
|
||
|
||
// (l.re==r.re && l.im==r.im) or (l.re!=r.re || l.im!=r.im)
|
||
LLValue* b1 = DtoBinFloatsEquals(loc, lhs_re, rhs_re, op);
|
||
LLValue* b2 = DtoBinFloatsEquals(loc, lhs_im, rhs_im, op);
|
||
|
||
if (op == TOKequal)
|
||
return gIR->ir->CreateAnd(b1,b2,"tmp");
|
||
else
|
||
return gIR->ir->CreateOr(b1,b2,"tmp");
|
||
}
|
||
|
||
//////////////////////////////////////////////////////////////////////////////////////////
|
||
|
||
DValue* DtoCastComplex(Loc& loc, DValue* val, Type* _to)
|
||
{
|
||
Type* to = _to->toBasetype();
|
||
Type* vty = val->getType()->toBasetype();
|
||
if (to->iscomplex()) {
|
||
if (vty->size() == to->size())
|
||
return val;
|
||
|
||
llvm::Value *re, *im;
|
||
DtoGetComplexParts(loc, val->getType(), val, re, im);
|
||
LLType* toty = DtoComplexBaseType(to);
|
||
|
||
if (to->size() < vty->size()) {
|
||
re = gIR->ir->CreateFPTrunc(re, toty, "tmp");
|
||
im = gIR->ir->CreateFPTrunc(im, toty, "tmp");
|
||
}
|
||
else {
|
||
re = gIR->ir->CreateFPExt(re, toty, "tmp");
|
||
im = gIR->ir->CreateFPExt(im, toty, "tmp");
|
||
}
|
||
|
||
LLValue* pair = DtoAggrPair(DtoType(_to), re, im);
|
||
return new DImValue(_to, pair);
|
||
}
|
||
else if (to->isimaginary()) {
|
||
// FIXME: this loads both values, even when we only need one
|
||
LLValue* v = val->getRVal();
|
||
LLValue* impart = gIR->ir->CreateExtractValue(v, 1, ".im_part");
|
||
Type *extractty;
|
||
if (vty->ty == Tcomplex32) {
|
||
extractty = Type::timaginary32;
|
||
} else if (vty->ty == Tcomplex64) {
|
||
extractty = Type::timaginary64;
|
||
} else if (vty->ty == Tcomplex80) {
|
||
extractty = Type::timaginary80;
|
||
}
|
||
DImValue* im = new DImValue(extractty, impart);
|
||
return DtoCastFloat(loc, im, to);
|
||
}
|
||
else if (to->ty == Tbool) {
|
||
return new DImValue(_to, DtoComplexEquals(loc, TOKnotequal, val, DtoNullValue(vty)));
|
||
}
|
||
else if (to->isfloating() || to->isintegral()) {
|
||
// FIXME: this loads both values, even when we only need one
|
||
LLValue* v = val->getRVal();
|
||
LLValue* repart = gIR->ir->CreateExtractValue(v, 0, ".re_part");
|
||
Type *extractty;
|
||
if (vty->ty == Tcomplex32) {
|
||
extractty = Type::tfloat32;
|
||
} else if (vty->ty == Tcomplex64) {
|
||
extractty = Type::tfloat64;
|
||
} else if (vty->ty == Tcomplex80) {
|
||
extractty = Type::tfloat80;
|
||
}
|
||
DImValue* re = new DImValue(extractty, repart);
|
||
return DtoCastFloat(loc, re, to);
|
||
}
|
||
else {
|
||
error(loc, "Don't know how to cast %s to %s", vty->toChars(), to->toChars());
|
||
fatal();
|
||
}
|
||
}
|
||
|