1 //===-- iConstPool.cpp - Implement ConstPool instructions --------*- C++ -*--=//
3 // This file implements the ConstPool* classes...
5 //===----------------------------------------------------------------------===//
7 #define __STDC_LIMIT_MACROS // Get defs for INT64_MAX and friends...
8 #include "llvm/ConstPoolVals.h"
9 #include "llvm/ConstantPool.h"
10 #include "llvm/Support/StringExtras.h" // itostr
11 #include "llvm/DerivedTypes.h"
12 #include "llvm/SymbolTable.h"
16 //===----------------------------------------------------------------------===//
18 //===----------------------------------------------------------------------===//
20 void ConstantPool::setParent(SymTabValue *STV) {
22 for (unsigned i = 0; i < Planes.size(); i++)
23 Planes[i]->setParent(Parent);
26 const Value *ConstantPool::getParentV() const { return Parent->getSTVParent(); }
27 Value *ConstantPool::getParentV() { return Parent->getSTVParent(); }
31 // Constant getPlane - Returns true if the type plane does not exist, otherwise
32 // updates the pointer to point to the correct plane.
34 bool ConstantPool::getPlane(const Type *T, const PlaneType *&Plane) const {
35 unsigned Ty = T->getUniqueID();
36 if (Ty >= Planes.size()) return true;
41 // Constant getPlane - Returns true if the type plane does not exist, otherwise
42 // updates the pointer to point to the correct plane.
44 bool ConstantPool::getPlane(const Type *T, PlaneType *&Plane) {
45 unsigned Ty = T->getUniqueID();
46 if (Ty >= Planes.size()) return true;
51 void ConstantPool::resize(unsigned size) {
52 unsigned oldSize = Planes.size();
53 Planes.resize(size, 0);
54 while (oldSize < size)
55 Planes[oldSize++] = new PlaneType(Parent, Parent);
58 ConstantPool::PlaneType &ConstantPool::getPlane(const Type *T) {
59 unsigned Ty = T->getUniqueID();
60 if (Ty >= Planes.size()) resize(Ty+1);
64 // insert - Add constant into the symbol table...
65 void ConstantPool::insert(ConstPoolVal *N) {
66 unsigned Ty = N->getType()->getUniqueID();
67 if (Ty >= Planes.size()) resize(Ty+1);
68 Planes[Ty]->push_back(N);
71 bool ConstantPool::remove(ConstPoolVal *N) {
72 unsigned Ty = N->getType()->getUniqueID();
73 if (Ty >= Planes.size()) return true; // Doesn't contain any of that type
75 PlaneType::iterator I = ::find(Planes[Ty]->begin(), Planes[Ty]->end(), N);
76 if (I == Planes[Ty]->end()) return true;
77 Planes[Ty]->remove(I);
81 void ConstantPool::delete_all() {
83 for (unsigned i = 0; i < Planes.size(); i++) {
84 Planes[i]->delete_all();
85 Planes[i]->setParent(0);
91 void ConstantPool::dropAllReferences() {
92 for (unsigned i = 0; i < Planes.size(); i++)
93 for_each(Planes[i]->begin(), Planes[i]->end(),
94 mem_fun(&ConstPoolVal::dropAllReferences));
97 struct EqualsConstant {
98 const ConstPoolVal *v;
99 inline EqualsConstant(const ConstPoolVal *V) { v = V; }
100 inline bool operator()(const ConstPoolVal *V) const {
106 ConstPoolVal *ConstantPool::find(const ConstPoolVal *V) {
108 if (getPlane(V->getType(), P)) return 0;
109 PlaneType::const_iterator PI = find_if(P->begin(), P->end(),
111 if (PI == P->end()) return 0;
115 const ConstPoolVal *ConstantPool::find(const ConstPoolVal *V) const {
117 if (getPlane(V->getType(), P)) return 0;
118 PlaneType::const_iterator PI = find_if(P->begin(), P->end(),
120 if (PI == P->end()) return 0;
124 ConstPoolVal *ConstantPool::find(const Type *Ty) {
126 if (getPlane(Type::TypeTy, P)) return 0;
128 // TODO: This is kinda silly
131 PlaneType::const_iterator PI =
132 find_if(P->begin(), P->end(), EqualsConstant(&V));
133 if (PI == P->end()) return 0;
137 const ConstPoolVal *ConstantPool::find(const Type *Ty) const {
139 if (getPlane(Type::TypeTy, P)) return 0;
141 // TODO: This is kinda silly
144 PlaneType::const_iterator PI =
145 find_if(P->begin(), P->end(), EqualsConstant(&V));
146 if (PI == P->end()) return 0;
152 inline EqualsType(const Type *t) { T = t; }
153 inline bool operator()(const ConstPoolVal *CPV) const {
154 return static_cast<const ConstPoolType*>(CPV)->getValue() == T;
158 // ensureTypeAvailable - This is used to make sure that the specified type is
159 // in the constant pool. If it is not already in the constant pool, it is
162 const Type *ConstantPool::ensureTypeAvailable(const Type *Ty) {
163 // Get the type type plane...
164 PlaneType &P = getPlane(Type::TypeTy);
165 PlaneType::const_iterator PI = find_if(P.begin(), P.end(), EqualsType(Ty));
168 ConstPoolVal *CPT = new ConstPoolType(Ty);
174 //===----------------------------------------------------------------------===//
175 // ConstPoolVal Class
176 //===----------------------------------------------------------------------===//
178 // Specialize setName to take care of symbol table majik
179 void ConstPoolVal::setName(const string &name) {
181 if ((P = getParent()) && hasName()) P->getSymbolTable()->remove(this);
182 Value::setName(name);
183 if (P && hasName()) P->getSymbolTable()->insert(this);
186 // Static constructor to create a '0' constant of arbitrary type...
187 ConstPoolVal *ConstPoolVal::getNullConstant(const Type *Ty) {
188 switch (Ty->getPrimitiveID()) {
189 case Type::BoolTyID: return new ConstPoolBool(false);
190 case Type::SByteTyID:
191 case Type::ShortTyID:
193 case Type::LongTyID: return new ConstPoolSInt(Ty, 0);
195 case Type::UByteTyID:
196 case Type::UShortTyID:
198 case Type::ULongTyID: return new ConstPoolUInt(Ty, 0);
200 case Type::FloatTyID:
201 case Type::DoubleTyID: return new ConstPoolFP(Ty, 0);
209 //===----------------------------------------------------------------------===//
210 // ConstPoolXXX Classes
211 //===----------------------------------------------------------------------===//
213 //===----------------------------------------------------------------------===//
214 // Normal Constructors
216 ConstPoolBool::ConstPoolBool(bool V, const string &Name = "")
217 : ConstPoolVal(Type::BoolTy, Name) {
220 ConstPoolBool::ConstPoolBool(const Type *Ty, bool V, const string &Name = "")
221 : ConstPoolVal(Type::BoolTy, Name) {
223 assert(Ty == Type::BoolTy && "BoolTy is only valid type for bool constant");
226 ConstPoolInt::ConstPoolInt(const Type *Ty, uint64_t V, const string &Name)
227 : ConstPoolVal(Ty, Name) { Val.Unsigned = V; }
228 ConstPoolInt::ConstPoolInt(const Type *Ty, int64_t V, const string &Name)
229 : ConstPoolVal(Ty, Name) { Val.Signed = V; }
231 ConstPoolSInt::ConstPoolSInt(const Type *Ty, int64_t V, const string &Name)
232 : ConstPoolInt(Ty, V, Name) {
233 //cerr << "value = " << (int)V << ": " << Ty->getName() << endl;
234 assert(isValueValidForType(Ty, V) && "Value too large for type!");
237 ConstPoolUInt::ConstPoolUInt(const Type *Ty, uint64_t V, const string &Name)
238 : ConstPoolInt(Ty, V, Name) {
239 //cerr << "Uvalue = " << (int)V << ": " << Ty->getName() << endl;
240 assert(isValueValidForType(Ty, V) && "Value too large for type!");
243 ConstPoolFP::ConstPoolFP(const Type *Ty, double V, const string &Name)
244 : ConstPoolVal(Ty, Name) {
245 assert(isValueValidForType(Ty, V) && "Value too large for type!");
249 ConstPoolType::ConstPoolType(const Type *V, const string &Name)
250 : ConstPoolVal(Type::TypeTy, Name), Val(V) {
253 ConstPoolArray::ConstPoolArray(const ArrayType *T,
254 vector<ConstPoolVal*> &V,
256 : ConstPoolVal(T, Name) {
257 for (unsigned i = 0; i < V.size(); i++) {
258 assert(V[i]->getType() == T->getElementType());
259 Operands.push_back(Use(V[i], this));
263 ConstPoolStruct::ConstPoolStruct(const StructType *T,
264 vector<ConstPoolVal*> &V,
266 : ConstPoolVal(T, Name) {
267 const StructType::ElementTypes &ETypes = T->getElementTypes();
269 for (unsigned i = 0; i < V.size(); i++) {
270 assert(V[i]->getType() == ETypes[i]);
271 Operands.push_back(Use(V[i], this));
276 //===----------------------------------------------------------------------===//
279 ConstPoolBool::ConstPoolBool(const ConstPoolBool &CPB)
280 : ConstPoolVal(Type::BoolTy) {
284 ConstPoolInt::ConstPoolInt(const ConstPoolInt &CPI)
285 : ConstPoolVal(CPI.getType()) {
286 Val.Signed = CPI.Val.Signed;
289 ConstPoolFP::ConstPoolFP(const ConstPoolFP &CPFP)
290 : ConstPoolVal(CPFP.getType()) {
294 ConstPoolType::ConstPoolType(const ConstPoolType &CPT)
295 : ConstPoolVal(Type::TypeTy), Val(CPT.Val) {
298 ConstPoolArray::ConstPoolArray(const ConstPoolArray &CPA)
299 : ConstPoolVal(CPA.getType()) {
300 for (unsigned i = 0; i < CPA.Operands.size(); i++)
301 Operands.push_back(Use(CPA.Operands[i], this));
304 ConstPoolStruct::ConstPoolStruct(const ConstPoolStruct &CPS)
305 : ConstPoolVal(CPS.getType()) {
306 for (unsigned i = 0; i < CPS.Operands.size(); i++)
307 Operands.push_back(Use(CPS.Operands[i], this));
310 //===----------------------------------------------------------------------===//
311 // getStrValue implementations
313 string ConstPoolBool::getStrValue() const {
314 return Val ? "true" : "false";
317 string ConstPoolSInt::getStrValue() const {
318 return itostr(Val.Signed);
321 string ConstPoolUInt::getStrValue() const {
322 return utostr(Val.Unsigned);
325 string ConstPoolFP::getStrValue() const {
329 string ConstPoolType::getStrValue() const {
330 return Val->getName();
333 string ConstPoolArray::getStrValue() const {
335 if (Operands.size()) {
336 Result += " " + Operands[0]->getType()->getName() +
337 " " + Operands[0]->castConstantAsserting()->getStrValue();
338 for (unsigned i = 1; i < Operands.size(); i++)
339 Result += ", " + Operands[i]->getType()->getName() +
340 " " + Operands[i]->castConstantAsserting()->getStrValue();
343 return Result + " ]";
346 string ConstPoolStruct::getStrValue() const {
348 if (Operands.size()) {
349 Result += " " + Operands[0]->getType()->getName() +
350 " " + Operands[0]->castConstantAsserting()->getStrValue();
351 for (unsigned i = 1; i < Operands.size(); i++)
352 Result += ", " + Operands[i]->getType()->getName() +
353 " " + Operands[i]->castConstantAsserting()->getStrValue();
356 return Result + " }";
359 //===----------------------------------------------------------------------===//
360 // equals implementations
362 bool ConstPoolBool::equals(const ConstPoolVal *V) const {
363 assert(getType() == V->getType());
364 return ((ConstPoolBool*)V)->getValue() == Val;
367 bool ConstPoolInt::equals(const ConstPoolVal *V) const {
368 assert(getType() == V->getType());
369 return ((ConstPoolInt*)V)->Val.Signed == Val.Signed;
372 bool ConstPoolFP::equals(const ConstPoolVal *V) const {
373 assert(getType() == V->getType());
374 return ((ConstPoolFP*)V)->getValue() == Val;
377 bool ConstPoolType::equals(const ConstPoolVal *V) const {
378 assert(getType() == V->getType());
379 return ((ConstPoolType*)V)->getValue() == Val;
382 bool ConstPoolArray::equals(const ConstPoolVal *V) const {
383 assert(getType() == V->getType());
384 ConstPoolArray *AV = (ConstPoolArray*)V;
385 if (Operands.size() != AV->Operands.size()) return false;
386 for (unsigned i = 0; i < Operands.size(); i++)
387 if (!Operands[i]->castConstantAsserting()->equals(
388 AV->Operands[i]->castConstantAsserting()))
394 bool ConstPoolStruct::equals(const ConstPoolVal *V) const {
395 assert(getType() == V->getType());
396 ConstPoolStruct *SV = (ConstPoolStruct*)V;
397 if (Operands.size() != SV->Operands.size()) return false;
398 for (unsigned i = 0; i < Operands.size(); i++)
399 if (!Operands[i]->castConstantAsserting()->equals(
400 SV->Operands[i]->castConstantAsserting()))
406 //===----------------------------------------------------------------------===//
407 // isValueValidForType implementations
409 bool ConstPoolSInt::isValueValidForType(const Type *Ty, int64_t Val) {
410 switch (Ty->getPrimitiveID()) {
412 return false; // These can't be represented as integers!!!
415 case Type::SByteTyID:
416 return (Val <= INT8_MAX && Val >= INT8_MIN);
417 case Type::ShortTyID:
418 return (Val <= INT16_MAX && Val >= INT16_MIN);
420 return (Val <= INT32_MAX && Val >= INT32_MIN);
422 return true; // This is the largest type...
428 bool ConstPoolUInt::isValueValidForType(const Type *Ty, uint64_t Val) {
429 switch (Ty->getPrimitiveID()) {
431 return false; // These can't be represented as integers!!!
434 case Type::UByteTyID:
435 return (Val <= UINT8_MAX);
436 case Type::UShortTyID:
437 return (Val <= UINT16_MAX);
439 return (Val <= UINT32_MAX);
440 case Type::ULongTyID:
441 return true; // This is the largest type...
447 bool ConstPoolFP::isValueValidForType(const Type *Ty, double Val) {
448 switch (Ty->getPrimitiveID()) {
450 return false; // These can't be represented as floating point!
452 // TODO: Figure out how to test if a double can be cast to a float!
453 case Type::FloatTyID:
455 return (Val <= UINT8_MAX);
457 case Type::DoubleTyID:
458 return true; // This is the largest type...
463 //===----------------------------------------------------------------------===//
464 // Extra Method implementations
466 ConstPoolInt *ConstPoolInt::get(const Type *Ty, unsigned char V) {
467 assert(V <= 127 && "equals: Can only be used with very small constants!");
468 if (Ty->isSigned()) return new ConstPoolSInt(Ty, V);
469 return new ConstPoolUInt(Ty, V);