Constants.h revision 041e2eb51721bcfecee5d9c9fc409ff185526e47
148486893f46d2e12e926682a3ecb908716bc66c4Chris Lattner//===-- llvm/Constants.h - Constant class subclass definitions --*- C++ -*-===// 29769ab22265b313171d201b5928688524a01bd87Misha Brukman// 36fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// The LLVM Compiler Infrastructure 46fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell// 57ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// This file is distributed under the University of Illinois Open Source 67ed47a13356daed2a34cd2209a31f92552e3bdd8Chris Lattner// License. See LICENSE.TXT for details. 79769ab22265b313171d201b5928688524a01bd87Misha Brukman// 86fbcc26f1460eaee4e0eb8b426fc1ff0c7af11beJohn Criswell//===----------------------------------------------------------------------===// 9009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner// 100b5a504d105514178c80b886321221fbe5ac1131Reid Spencer/// @file This file contains the declarations for the subclasses of Constant, 110b5a504d105514178c80b886321221fbe5ac1131Reid Spencer/// which represent the different flavors of constant values that live in LLVM. 120b5a504d105514178c80b886321221fbe5ac1131Reid Spencer/// Note that Constants are immutable (once created they never change) and are 130b5a504d105514178c80b886321221fbe5ac1131Reid Spencer/// fully shared by structural equivalence. This means that two structurally 140b5a504d105514178c80b886321221fbe5ac1131Reid Spencer/// equivalent constants will always have the same address. Constant's are 150b5a504d105514178c80b886321221fbe5ac1131Reid Spencer/// created on demand as needed and never deleted: thus clients don't have to 160b5a504d105514178c80b886321221fbe5ac1131Reid Spencer/// worry about the lifetime of the objects. 17009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner// 18009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner//===----------------------------------------------------------------------===// 19009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 2031bcdb822fe9133b1973de51519d34e5813a6184Chris Lattner#ifndef LLVM_CONSTANTS_H 2131bcdb822fe9133b1973de51519d34e5813a6184Chris Lattner#define LLVM_CONSTANTS_H 22009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 2331bcdb822fe9133b1973de51519d34e5813a6184Chris Lattner#include "llvm/Constant.h" 2452eb13c58e63e277e83f94f3015dfc0e39a211eeChris Lattner#include "llvm/Type.h" 25efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif#include "llvm/OperandTraits.h" 26532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer#include "llvm/ADT/APInt.h" 27343e770983dcf53a1ea2dfca4e04d28ebc41138aDale Johannesen#include "llvm/ADT/APFloat.h" 28009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 29d0fde30ce850b78371fd1386338350591f9ff494Brian Gaekenamespace llvm { 30d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 31009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattnerclass ArrayType; 32009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattnerclass StructType; 334cfb15331652f9a2f7e5f755485a2f6eb87a20c6Chris Lattnerclass PointerType; 349d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencerclass VectorType; 35009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 366cc89aad25155ecd93b5318414851aa46351196dChris Lattnertemplate<class ConstantClass, class TypeClass, class ValType> 376cc89aad25155ecd93b5318414851aa46351196dChris Lattnerstruct ConstantCreator; 385133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattnertemplate<class ConstantClass, class TypeClass> 395133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattnerstruct ConvertConstantType; 405133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattner 4186e100bd9bf1a1a838902c46de926c79c68cdde3Chris Lattner//===----------------------------------------------------------------------===// 4224d6da5fedcf39891f7d8c5b031c01324b3db545Reid Spencer/// This is the shared class of boolean and integer constants. This class 436b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng/// represents both boolean and integral constants. 446b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng/// @brief Class for constant integers. 456b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Shengclass ConstantInt : public Constant { 46d1afbd02ef9405fb5c1575bf1d3656f434c4a956Chris Lattner static ConstantInt *TheTrueVal, *TheFalseVal; 47051a950000e21935165db56695e35bade668193bGabor Greif void *operator new(size_t, unsigned); // DO NOT IMPLEMENT 486b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng ConstantInt(const ConstantInt &); // DO NOT IMPLEMENT 49532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer ConstantInt(const IntegerType *Ty, const APInt& V); 50532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer APInt Val; 51051a950000e21935165db56695e35bade668193bGabor Greifprotected: 52051a950000e21935165db56695e35bade668193bGabor Greif // allocate space for exactly zero operands 53051a950000e21935165db56695e35bade668193bGabor Greif void *operator new(size_t s) { 54051a950000e21935165db56695e35bade668193bGabor Greif return User::operator new(s, 0); 55051a950000e21935165db56695e35bade668193bGabor Greif } 56994b9f337ba9e15f3fa537c2a2d443b890c2a617Chris Lattnerpublic: 57532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer /// Return the constant as an APInt value reference. This allows clients to 58532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer /// obtain a copy of the value, with all its precision in tact. 59532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer /// @brief Return the constant's value. 60532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer inline const APInt& getValue() const { 61532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer return Val; 62532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer } 63e51f2a59d93336b2be46b9663af317b96a7e045bChris Lattner 64e51f2a59d93336b2be46b9663af317b96a7e045bChris Lattner /// getBitWidth - Return the bitwidth of this constant. 65e51f2a59d93336b2be46b9663af317b96a7e045bChris Lattner unsigned getBitWidth() const { return Val.getBitWidth(); } 66532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer 670b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// Return the constant as a 64-bit unsigned integer value after it 68532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer /// has been zero extended as appropriate for the type of this constant. Note 69532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer /// that this method can assert if the value does not fit in 64 bits. 70532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer /// @deprecated 710b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// @brief Return the zero extended value. 72a58ef7b6526ee30f4793fe91686899c602b4f9b9Chris Lattner inline uint64_t getZExtValue() const { 73532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer return Val.getZExtValue(); 74a58ef7b6526ee30f4793fe91686899c602b4f9b9Chris Lattner } 75c2dfb8bb909b0ba08733be94821513aef9467fa0Chris Lattner 760b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// Return the constant as a 64-bit integer value after it has been sign 77532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer /// sign extended as appropriate for the type of this constant. Note that 78532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer /// this method can assert if the value does not fit in 64 bits. 79532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer /// @deprecated 806c6b6a77c0f68d5a41e94d8ef0b1093089e683faChris Lattner /// @brief Return the sign extended value. 81a58ef7b6526ee30f4793fe91686899c602b4f9b9Chris Lattner inline int64_t getSExtValue() const { 82532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer return Val.getSExtValue(); 83a58ef7b6526ee30f4793fe91686899c602b4f9b9Chris Lattner } 84532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer 850b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// A helper method that can be used to determine if the constant contained 860b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// within is equal to a constant. This only works for very small values, 870b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// because this is all that can be represented with all types. 880b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// @brief Determine if this constant's value is same as an unsigned char. 89532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer bool equalsInt(uint64_t V) const { 90b83eb6447ba155342598f0fabe1f08f5baa9164aReid Spencer return Val == V; 912ce0cbbbe1d53448ddbdaaedf0da28f68dd92ea0Chris Lattner } 922ce0cbbbe1d53448ddbdaaedf0da28f68dd92ea0Chris Lattner 936b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// getTrue/getFalse - Return the singleton true/false values. 946b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng static inline ConstantInt *getTrue() { 95d1afbd02ef9405fb5c1575bf1d3656f434c4a956Chris Lattner if (TheTrueVal) return TheTrueVal; 96d1afbd02ef9405fb5c1575bf1d3656f434c4a956Chris Lattner return CreateTrueFalseVals(true); 976b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng } 986b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng static inline ConstantInt *getFalse() { 99d1afbd02ef9405fb5c1575bf1d3656f434c4a956Chris Lattner if (TheFalseVal) return TheFalseVal; 100d1afbd02ef9405fb5c1575bf1d3656f434c4a956Chris Lattner return CreateTrueFalseVals(false); 1016b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng } 1026b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng 103a0098386741949065f099b940819201f73cd86c2Reid Spencer /// Return a ConstantInt with the specified value for the specified type. The 1040050c737c549b89f5df6743dc81646a3b7f4a94fReid Spencer /// value V will be canonicalized to a an unsigned APInt. Accessing it with 1050050c737c549b89f5df6743dc81646a3b7f4a94fReid Spencer /// either getSExtValue() or getZExtValue() will yield a correctly sized and 1060050c737c549b89f5df6743dc81646a3b7f4a94fReid Spencer /// signed value for the type Ty. 1070b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// @brief Get a ConstantInt for a specific value. 1087fc44c8c5fb0efd6c909f4e306ad516df88e93e1Reid Spencer static ConstantInt *get(const Type *Ty, uint64_t V, bool isSigned = false); 1090b5a504d105514178c80b886321221fbe5ac1131Reid Spencer 110f57fc81faebf3eb81fb30fe17c4295d46060e03fReid Spencer /// Return a ConstantInt with the specified value and an implied Type. The 111f57fc81faebf3eb81fb30fe17c4295d46060e03fReid Spencer /// type is the integer type that corresponds to the bit width of the value. 112f57fc81faebf3eb81fb30fe17c4295d46060e03fReid Spencer static ConstantInt *get(const APInt &V); 113f57fc81faebf3eb81fb30fe17c4295d46060e03fReid Spencer 114c10305743c313558405079452138f03124e87581Reid Spencer /// getType - Specialize the getType() method to always return an IntegerType, 115c10305743c313558405079452138f03124e87581Reid Spencer /// which reduces the amount of casting needed in parts of the compiler. 116c10305743c313558405079452138f03124e87581Reid Spencer /// 117c10305743c313558405079452138f03124e87581Reid Spencer inline const IntegerType *getType() const { 118c10305743c313558405079452138f03124e87581Reid Spencer return reinterpret_cast<const IntegerType*>(Value::getType()); 119c10305743c313558405079452138f03124e87581Reid Spencer } 120c10305743c313558405079452138f03124e87581Reid Spencer 1210b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// This static method returns true if the type Ty is big enough to 1220b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// represent the value V. This can be used to avoid having the get method 1236d0483a7a365338e17537366c6c934edef2ef726Reid Spencer /// assert when V is larger than Ty can represent. Note that there are two 1246d0483a7a365338e17537366c6c934edef2ef726Reid Spencer /// versions of this method, one for unsigned and one for signed integers. 1256d0483a7a365338e17537366c6c934edef2ef726Reid Spencer /// Although ConstantInt canonicalizes everything to an unsigned integer, 1266d0483a7a365338e17537366c6c934edef2ef726Reid Spencer /// the signed version avoids callers having to convert a signed quantity 1276d0483a7a365338e17537366c6c934edef2ef726Reid Spencer /// to the appropriate unsigned type before calling the method. 1280b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// @returns true if V is a valid value for type Ty 1290b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// @brief Determine if the value is in range for the given type. 1309b11d518aef8e191e5e94f3503dfddbe1c0a387aReid Spencer static bool isValueValidForType(const Type *Ty, uint64_t V); 131009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner static bool isValueValidForType(const Type *Ty, int64_t V); 13293aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner 1336b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// This function will return true iff this constant represents the "null" 1346b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// value that would be returned by the getNullValue method. 135b83eb6447ba155342598f0fabe1f08f5baa9164aReid Spencer /// @returns true if this is the null integer value. 1366b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// @brief Determine if the value is null. 1376b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng virtual bool isNullValue() const { 1386b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng return Val == 0; 1396b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng } 1405ef35fdb72f7800e65e27311e38f028e3d400693Chris Lattner 14134da0ac28f7bfe737f92d3a098697a6ebc09a25eReid Spencer /// This is just a convenience method to make client code smaller for a 14234da0ac28f7bfe737f92d3a098697a6ebc09a25eReid Spencer /// common code. It also correctly performs the comparison without the 14334da0ac28f7bfe737f92d3a098697a6ebc09a25eReid Spencer /// potential for an assertion from getZExtValue(). 14434da0ac28f7bfe737f92d3a098697a6ebc09a25eReid Spencer bool isZero() const { 14534da0ac28f7bfe737f92d3a098697a6ebc09a25eReid Spencer return Val == 0; 14634da0ac28f7bfe737f92d3a098697a6ebc09a25eReid Spencer } 14734da0ac28f7bfe737f92d3a098697a6ebc09a25eReid Spencer 14837eeaa729bc70258166a675ee00bbe95e608d519Reid Spencer /// This is just a convenience method to make client code smaller for a 14934da0ac28f7bfe737f92d3a098697a6ebc09a25eReid Spencer /// common case. It also correctly performs the comparison without the 15034da0ac28f7bfe737f92d3a098697a6ebc09a25eReid Spencer /// potential for an assertion from getZExtValue(). 15137eeaa729bc70258166a675ee00bbe95e608d519Reid Spencer /// @brief Determine if the value is one. 15234da0ac28f7bfe737f92d3a098697a6ebc09a25eReid Spencer bool isOne() const { 15337eeaa729bc70258166a675ee00bbe95e608d519Reid Spencer return Val == 1; 15437eeaa729bc70258166a675ee00bbe95e608d519Reid Spencer } 15537eeaa729bc70258166a675ee00bbe95e608d519Reid Spencer 1566b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// This function will return true iff every bit in this constant is set 1576b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// to true. 1580b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// @returns true iff this constant's bits are all set to true. 1596b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// @brief Determine if the value is all ones. 160579dca12c2cfd60bc18aaadbd5331897d48fec29Reid Spencer bool isAllOnesValue() const { 161532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer return Val.isAllOnesValue(); 1626b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng } 1631680312867fffeb9369800949b809e0b9e29a914Chris Lattner 1646b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// This function will return true iff this constant represents the largest 1656b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// value that may be represented by the constant's type. 1660b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// @returns true iff this is the largest value that may be represented 1670b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// by this type. 1686b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// @brief Determine if the value is maximal. 169579dca12c2cfd60bc18aaadbd5331897d48fec29Reid Spencer bool isMaxValue(bool isSigned) const { 170532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer if (isSigned) 171532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer return Val.isMaxSignedValue(); 172532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer else 173532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer return Val.isMaxValue(); 174994b9f337ba9e15f3fa537c2a2d443b890c2a617Chris Lattner } 175994b9f337ba9e15f3fa537c2a2d443b890c2a617Chris Lattner 1766b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// This function will return true iff this constant represents the smallest 1776b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// value that may be represented by this constant's type. 1780b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// @returns true if this is the smallest value that may be represented by 1790b5a504d105514178c80b886321221fbe5ac1131Reid Spencer /// this type. 1806b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// @brief Determine if the value is minimal. 181579dca12c2cfd60bc18aaadbd5331897d48fec29Reid Spencer bool isMinValue(bool isSigned) const { 182532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer if (isSigned) 183532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer return Val.isMinSignedValue(); 184532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer else 185532d0ce208809545dc46d2de70c0384c036470d1Reid Spencer return Val.isMinValue(); 186994b9f337ba9e15f3fa537c2a2d443b890c2a617Chris Lattner } 187994b9f337ba9e15f3fa537c2a2d443b890c2a617Chris Lattner 188b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng /// This function will return true iff this constant represents a value with 189b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng /// active bits bigger than 64 bits or a value greater than the given uint64_t 190b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng /// value. 191b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng /// @returns true iff this constant is greater or equal to the given number. 192b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng /// @brief Determine if the value is greater or equal to the given number. 1930642f75836960afd547a6b98fad33026d0c355beZhou Sheng bool uge(uint64_t Num) { 1940642f75836960afd547a6b98fad33026d0c355beZhou Sheng return Val.getActiveBits() > 64 || Val.getZExtValue() >= Num; 195b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng } 196b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng 197b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng /// @returns the 64-bit value of this constant if its active bits number is 198b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng /// not greater than 64, otherwise, just return the given uint64_t number. 199b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng /// @brief Get the constant's value if possible. 20099b1b38818e3a1628e39af40500bad47d5207d0dChris Lattner uint64_t getLimitedValue(uint64_t Limit = ~0ULL) const { 20199b1b38818e3a1628e39af40500bad47d5207d0dChris Lattner return Val.getLimitedValue(Limit); 202b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng } 203b422d2d9e5632585adb0c1855b217f3123cbdfefZhou Sheng 2046b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// @returns the value for an integer constant of the given type that has all 2056b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// its bits set to true. 2066b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng /// @brief Get the all ones value 2076b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng static ConstantInt *getAllOnesValue(const Type *Ty); 2086b6b6ef1677fa71b1072c2911b4c1f9524a558c9Zhou Sheng 209b83eb6447ba155342598f0fabe1f08f5baa9164aReid Spencer /// @brief Methods to support type inquiry through isa, cast, and dyn_cast. 210b83eb6447ba155342598f0fabe1f08f5baa9164aReid Spencer static inline bool classof(const ConstantInt *) { return true; } 21152eb13c58e63e277e83f94f3015dfc0e39a211eeChris Lattner static bool classof(const Value *V) { 212a1a702cdd23221e6e3f36632be91150138958e9dDan Gohman return V->getValueID() == ConstantIntVal; 2135ef35fdb72f7800e65e27311e38f028e3d400693Chris Lattner } 214d1afbd02ef9405fb5c1575bf1d3656f434c4a956Chris Lattner static void ResetTrueFalse() { TheTrueVal = TheFalseVal = 0; } 215d1afbd02ef9405fb5c1575bf1d3656f434c4a956Chris Lattnerprivate: 216d1afbd02ef9405fb5c1575bf1d3656f434c4a956Chris Lattner static ConstantInt *CreateTrueFalseVals(bool WhichOne); 217009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner}; 218009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 219009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 22086e100bd9bf1a1a838902c46de926c79c68cdde3Chris Lattner//===----------------------------------------------------------------------===// 22193aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner/// ConstantFP - Floating Point Values [float, double] 22293aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner/// 223e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattnerclass ConstantFP : public Constant { 224343e770983dcf53a1ea2dfca4e04d28ebc41138aDale Johannesen APFloat Val; 225051a950000e21935165db56695e35bade668193bGabor Greif void *operator new(size_t, unsigned);// DO NOT IMPLEMENT 226e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattner ConstantFP(const ConstantFP &); // DO NOT IMPLEMENT 2273e22bed21110e9ca591a476ff2feea8790c67b13Chris Lattnerprotected: 228f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen ConstantFP(const Type *Ty, const APFloat& V); 229051a950000e21935165db56695e35bade668193bGabor Greifprotected: 230051a950000e21935165db56695e35bade668193bGabor Greif // allocate space for exactly zero operands 231051a950000e21935165db56695e35bade668193bGabor Greif void *operator new(size_t s) { 232051a950000e21935165db56695e35bade668193bGabor Greif return User::operator new(s, 0); 233051a950000e21935165db56695e35bade668193bGabor Greif } 234009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattnerpublic: 23593aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// get() - Static factory methods - Return objects of the specified value 2364592230265384bebc2879303310f89dee4d9d7a8Chris Lattner static ConstantFP *get(const APFloat &V); 237009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 238a541931ddb43191daea4217faa4762934d8bc169Evan Cheng /// get() - This returns a constant fp for the specified value in the 239a541931ddb43191daea4217faa4762934d8bc169Evan Cheng /// specified type. This should only be used for simple constant values like 240a541931ddb43191daea4217faa4762934d8bc169Evan Cheng /// 2.0/1.0 etc, that are known-valid both as double and as the target format. 241d6d48c4e5b60aa4acc02c7a8700cb79949503e93Chris Lattner static ConstantFP *get(const Type *Ty, double V); 242a541931ddb43191daea4217faa4762934d8bc169Evan Cheng 24393aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// isValueValidForType - return true if Ty is big enough to represent V. 244f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen static bool isValueValidForType(const Type *Ty, const APFloat& V); 245f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen inline const APFloat& getValueAPF() const { return Val; } 2465ef35fdb72f7800e65e27311e38f028e3d400693Chris Lattner 24793aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// isNullValue - Return true if this is the value that would be returned by 248cf2c4f8ae52d5f0a01ab40eda6d165f91b8de441Chris Lattner /// getNullValue. Don't depend on == for doubles to tell us it's zero, it 249cf2c4f8ae52d5f0a01ab40eda6d165f91b8de441Chris Lattner /// considers -0.0 to be null as well as 0.0. :( 2503a1eff732b36a663cdb9f07f4a9ccae6452eadcbJim Laskey virtual bool isNullValue() const; 2510eca13bf58e0a1d6b492ca257d01abc19c4024daChris Lattner 2529e3d3abd937c9bb79d56d25ec0e0724c7cbba67cDale Johannesen // Get a negative zero. 2539e3d3abd937c9bb79d56d25ec0e0724c7cbba67cDale Johannesen static ConstantFP *getNegativeZero(const Type* Ty); 2549e3d3abd937c9bb79d56d25ec0e0724c7cbba67cDale Johannesen 255f0fd6845eee799f62ac69297c9fd7086a0156cfaChris Lattner /// isExactlyValue - We don't rely on operator== working on double values, as 256f0fd6845eee799f62ac69297c9fd7086a0156cfaChris Lattner /// it returns true for things that are clearly not equal, like -0.0 and 0.0. 257f0fd6845eee799f62ac69297c9fd7086a0156cfaChris Lattner /// As such, this method can be used to do an exact bit-for-bit comparison of 25843421b3dd70af5b70e71816521f37502c397cc65Dale Johannesen /// two floating point values. The version with a double operand is retained 25943421b3dd70af5b70e71816521f37502c397cc65Dale Johannesen /// because it's so convenient to write isExactlyValue(2.0), but please use 260def286408f4ddd0511164d231dfeddcc5fe12008Chris Lattner /// it only for simple constants. 261f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen bool isExactlyValue(const APFloat& V) const; 26243421b3dd70af5b70e71816521f37502c397cc65Dale Johannesen 263f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen bool isExactlyValue(double V) const { 264beb5be03320f9bbe6a4a92b0c7e1e0ebf3ef865dDale Johannesen // convert is not supported on this type 265beb5be03320f9bbe6a4a92b0c7e1e0ebf3ef865dDale Johannesen if (&Val.getSemantics() == &APFloat::PPCDoubleDouble) 266beb5be03320f9bbe6a4a92b0c7e1e0ebf3ef865dDale Johannesen return false; 267def286408f4ddd0511164d231dfeddcc5fe12008Chris Lattner APFloat FV(V); 268def286408f4ddd0511164d231dfeddcc5fe12008Chris Lattner FV.convert(Val.getSemantics(), APFloat::rmNearestTiesToEven); 269def286408f4ddd0511164d231dfeddcc5fe12008Chris Lattner return isExactlyValue(FV); 270f04afdbb48568ef09f11fd10ac03426101f2dbf8Dale Johannesen } 27193aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// Methods for support type inquiry through isa, cast, and dyn_cast: 272e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattner static inline bool classof(const ConstantFP *) { return true; } 27352eb13c58e63e277e83f94f3015dfc0e39a211eeChris Lattner static bool classof(const Value *V) { 274a1a702cdd23221e6e3f36632be91150138958e9dDan Gohman return V->getValueID() == ConstantFPVal; 2755ef35fdb72f7800e65e27311e38f028e3d400693Chris Lattner } 276009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner}; 277009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 27886e100bd9bf1a1a838902c46de926c79c68cdde3Chris Lattner//===----------------------------------------------------------------------===// 27940bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner/// ConstantAggregateZero - All zero aggregate value 28040bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner/// 28140bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattnerclass ConstantAggregateZero : public Constant { 28240bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner friend struct ConstantCreator<ConstantAggregateZero, Type, char>; 283051a950000e21935165db56695e35bade668193bGabor Greif void *operator new(size_t, unsigned); // DO NOT IMPLEMENT 28440bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner ConstantAggregateZero(const ConstantAggregateZero &); // DO NOT IMPLEMENT 28540bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattnerprotected: 286423c2260f95883f7c84ac962e58ac66c3a11efacDan Gohman explicit ConstantAggregateZero(const Type *Ty) 2875181ac8081dd6c7d78613a5da8829f81a81e9e63Chris Lattner : Constant(Ty, ConstantAggregateZeroVal, 0, 0) {} 288051a950000e21935165db56695e35bade668193bGabor Greifprotected: 289051a950000e21935165db56695e35bade668193bGabor Greif // allocate space for exactly zero operands 290051a950000e21935165db56695e35bade668193bGabor Greif void *operator new(size_t s) { 291051a950000e21935165db56695e35bade668193bGabor Greif return User::operator new(s, 0); 292051a950000e21935165db56695e35bade668193bGabor Greif } 29340bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattnerpublic: 29440bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner /// get() - static factory method for creating a null aggregate. It is 29540bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner /// illegal to call this method with a non-aggregate type. 29640bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner static Constant *get(const Type *Ty); 29740bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner 29840bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner /// isNullValue - Return true if this is the value that would be returned by 29940bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner /// getNullValue. 30040bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner virtual bool isNullValue() const { return true; } 30140bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner 30240bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner virtual void destroyConstant(); 30340bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner 30440bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner /// Methods for support type inquiry through isa, cast, and dyn_cast: 30540bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner /// 30652eb13c58e63e277e83f94f3015dfc0e39a211eeChris Lattner static bool classof(const ConstantAggregateZero *) { return true; } 30752eb13c58e63e277e83f94f3015dfc0e39a211eeChris Lattner static bool classof(const Value *V) { 308a1a702cdd23221e6e3f36632be91150138958e9dDan Gohman return V->getValueID() == ConstantAggregateZeroVal; 30940bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner } 31040bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner}; 31140bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner 312009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 31386e100bd9bf1a1a838902c46de926c79c68cdde3Chris Lattner//===----------------------------------------------------------------------===// 31493aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner/// ConstantArray - Constant Array Declarations 31593aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner/// 316e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattnerclass ConstantArray : public Constant { 3176cc89aad25155ecd93b5318414851aa46351196dChris Lattner friend struct ConstantCreator<ConstantArray, ArrayType, 3186cc89aad25155ecd93b5318414851aa46351196dChris Lattner std::vector<Constant*> >; 319e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattner ConstantArray(const ConstantArray &); // DO NOT IMPLEMENT 3203e22bed21110e9ca591a476ff2feea8790c67b13Chris Lattnerprotected: 321697954c15da58bd8b186dbafdedd8b06db770201Chris Lattner ConstantArray(const ArrayType *T, const std::vector<Constant*> &Val); 322009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattnerpublic: 32393aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// get() - Static factory methods - Return objects of the specified value 324ca705fa31d53469d2e6d0e52fa9e40d3e13a088aChris Lattner static Constant *get(const ArrayType *T, const std::vector<Constant*> &); 325df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner static Constant *get(const ArrayType *T, 326df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner Constant*const*Vals, unsigned NumVals) { 327df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner // FIXME: make this the primary ctor method. 328df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner return get(T, std::vector<Constant*>(Vals, Vals+NumVals)); 329df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner } 330efcaa42c282ae6c6ba9652c48738c334878afbc6Reid Spencer 331efcaa42c282ae6c6ba9652c48738c334878afbc6Reid Spencer /// This method constructs a ConstantArray and initializes it with a text 332461bed2b753c514ac15ff824befe585988408f45Reid Spencer /// string. The default behavior (AddNull==true) causes a null terminator to 333461bed2b753c514ac15ff824befe585988408f45Reid Spencer /// be placed at the end of the array. This effectively increases the length 334461bed2b753c514ac15ff824befe585988408f45Reid Spencer /// of the array by one (you've been warned). However, in some situations 335461bed2b753c514ac15ff824befe585988408f45Reid Spencer /// this is not desired so if AddNull==false then the string is copied without 336461bed2b753c514ac15ff824befe585988408f45Reid Spencer /// null termination. 337461bed2b753c514ac15ff824befe585988408f45Reid Spencer static Constant *get(const std::string &Initializer, bool AddNull = true); 3389769ab22265b313171d201b5928688524a01bd87Misha Brukman 339efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif /// Transparently provide more efficient getOperand methods. 340efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant); 341efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif 34293aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// getType - Specialize the getType() method to always return an ArrayType, 34393aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// which reduces the amount of casting needed in parts of the compiler. 34493aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// 345682ea21397436e49eabbe13432e527869f07b0e0Chris Lattner inline const ArrayType *getType() const { 3468b70b78ba489b090d9866e6a4084ab1e8613b527Chris Lattner return reinterpret_cast<const ArrayType*>(Value::getType()); 347682ea21397436e49eabbe13432e527869f07b0e0Chris Lattner } 348009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 3496eabd74d1a236effc6757e7c81182fa1ecd52ac6Nick Lewycky /// isString - This method returns true if the array is an array of i8 and 3506eabd74d1a236effc6757e7c81182fa1ecd52ac6Nick Lewycky /// the elements of the array are all ConstantInt's. 3519b0a5ee5bb77b5f74320f3603750f4521d16d196Chris Lattner bool isString() const; 3529b0a5ee5bb77b5f74320f3603750f4521d16d196Chris Lattner 35322c7030a0c535ed48d8465994f8f8aaf8fa76813Evan Cheng /// isCString - This method returns true if the array is a string (see 354181b6c9cb5def44658d15848e34c5c45d973f065Reid Spencer /// @verbatim 35522c7030a0c535ed48d8465994f8f8aaf8fa76813Evan Cheng /// isString) and it ends in a null byte \0 and does not contains any other 356181b6c9cb5def44658d15848e34c5c45d973f065Reid Spencer /// @endverbatim 35722c7030a0c535ed48d8465994f8f8aaf8fa76813Evan Cheng /// null bytes except its terminator. 35822c7030a0c535ed48d8465994f8f8aaf8fa76813Evan Cheng bool isCString() const; 35922c7030a0c535ed48d8465994f8f8aaf8fa76813Evan Cheng 3609b0a5ee5bb77b5f74320f3603750f4521d16d196Chris Lattner /// getAsString - If this array is isString(), then this method converts the 3619b0a5ee5bb77b5f74320f3603750f4521d16d196Chris Lattner /// array to an std::string and returns it. Otherwise, it asserts out. 36293aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// 36393aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner std::string getAsString() const; 36493aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner 36593aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// isNullValue - Return true if this is the value that would be returned by 36640bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner /// getNullValue. This always returns false because zero arrays are always 36740bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner /// created as ConstantAggregateZero objects. 36840bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner virtual bool isNullValue() const { return false; } 3690eca13bf58e0a1d6b492ca257d01abc19c4024daChris Lattner 370e0fbb497ee44f86ec108e4ff8787a848c6ee8655Chris Lattner virtual void destroyConstant(); 37140cdedecf5d871a83363cb7d69a6f6eed525651cChris Lattner virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U); 372e0fbb497ee44f86ec108e4ff8787a848c6ee8655Chris Lattner 37393aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// Methods for support type inquiry through isa, cast, and dyn_cast: 374e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattner static inline bool classof(const ConstantArray *) { return true; } 37552eb13c58e63e277e83f94f3015dfc0e39a211eeChris Lattner static bool classof(const Value *V) { 376a1a702cdd23221e6e3f36632be91150138958e9dDan Gohman return V->getValueID() == ConstantArrayVal; 3775ef35fdb72f7800e65e27311e38f028e3d400693Chris Lattner } 378009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner}; 379009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 380efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greiftemplate <> 381efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greifstruct OperandTraits<ConstantArray> : VariadicOperandTraits<> { 382efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif}; 383efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif 384efe65369a74871c3140a540a6c95ce5d1f080954Gabor GreifDEFINE_TRANSPARENT_CASTED_OPERAND_ACCESSORS(ConstantArray, Constant) 385009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 38686e100bd9bf1a1a838902c46de926c79c68cdde3Chris Lattner//===----------------------------------------------------------------------===// 387e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattner// ConstantStruct - Constant Struct Declarations 388009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner// 389e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattnerclass ConstantStruct : public Constant { 3906cc89aad25155ecd93b5318414851aa46351196dChris Lattner friend struct ConstantCreator<ConstantStruct, StructType, 3916cc89aad25155ecd93b5318414851aa46351196dChris Lattner std::vector<Constant*> >; 392e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattner ConstantStruct(const ConstantStruct &); // DO NOT IMPLEMENT 3933e22bed21110e9ca591a476ff2feea8790c67b13Chris Lattnerprotected: 394697954c15da58bd8b186dbafdedd8b06db770201Chris Lattner ConstantStruct(const StructType *T, const std::vector<Constant*> &Val); 395009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattnerpublic: 39693aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// get() - Static factory methods - Return objects of the specified value 397c78631f0e2cfd7808233176c638c7f9a50ccaff2Chris Lattner /// 398ca705fa31d53469d2e6d0e52fa9e40d3e13a088aChris Lattner static Constant *get(const StructType *T, const std::vector<Constant*> &V); 399df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner static Constant *get(const std::vector<Constant*> &V, bool Packed = false); 400df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner static Constant *get(Constant*const* Vals, unsigned NumVals, 401df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner bool Packed = false) { 402df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner // FIXME: make this the primary ctor method. 403df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner return get(std::vector<Constant*>(Vals, Vals+NumVals), Packed); 404df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner } 405df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner 406efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif /// Transparently provide more efficient getOperand methods. 407efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant); 408efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif 40993aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// getType() specialization - Reduce amount of casting... 410c78631f0e2cfd7808233176c638c7f9a50ccaff2Chris Lattner /// 411682ea21397436e49eabbe13432e527869f07b0e0Chris Lattner inline const StructType *getType() const { 4128b70b78ba489b090d9866e6a4084ab1e8613b527Chris Lattner return reinterpret_cast<const StructType*>(Value::getType()); 413682ea21397436e49eabbe13432e527869f07b0e0Chris Lattner } 414009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 41593aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// isNullValue - Return true if this is the value that would be returned by 41640bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner /// getNullValue. This always returns false because zero structs are always 41740bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner /// created as ConstantAggregateZero objects. 418a5ae71a137b9c6f458cc6c9064be787dbc5f4311Chris Lattner virtual bool isNullValue() const { 41940bbeb5d077b1bc2b933d8c8628024dfa9b428c3Chris Lattner return false; 420a5ae71a137b9c6f458cc6c9064be787dbc5f4311Chris Lattner } 4210eca13bf58e0a1d6b492ca257d01abc19c4024daChris Lattner 422e0fbb497ee44f86ec108e4ff8787a848c6ee8655Chris Lattner virtual void destroyConstant(); 42340cdedecf5d871a83363cb7d69a6f6eed525651cChris Lattner virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U); 4249769ab22265b313171d201b5928688524a01bd87Misha Brukman 42593aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// Methods for support type inquiry through isa, cast, and dyn_cast: 426e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattner static inline bool classof(const ConstantStruct *) { return true; } 42752eb13c58e63e277e83f94f3015dfc0e39a211eeChris Lattner static bool classof(const Value *V) { 428a1a702cdd23221e6e3f36632be91150138958e9dDan Gohman return V->getValueID() == ConstantStructVal; 4295ef35fdb72f7800e65e27311e38f028e3d400693Chris Lattner } 430009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner}; 431009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner 432efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greiftemplate <> 433efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greifstruct OperandTraits<ConstantStruct> : VariadicOperandTraits<> { 434efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif}; 435efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif 436efe65369a74871c3140a540a6c95ce5d1f080954Gabor GreifDEFINE_TRANSPARENT_CASTED_OPERAND_ACCESSORS(ConstantStruct, Constant) 437efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif 43886e100bd9bf1a1a838902c46de926c79c68cdde3Chris Lattner//===----------------------------------------------------------------------===// 4399d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencer/// ConstantVector - Constant Vector Declarations 440715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke/// 4419d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencerclass ConstantVector : public Constant { 4429d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencer friend struct ConstantCreator<ConstantVector, VectorType, 443715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke std::vector<Constant*> >; 4449d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencer ConstantVector(const ConstantVector &); // DO NOT IMPLEMENT 445715c90ba524e736190a6380695ab337eeb5148beBrian Gaekeprotected: 4469d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencer ConstantVector(const VectorType *T, const std::vector<Constant*> &Val); 447715c90ba524e736190a6380695ab337eeb5148beBrian Gaekepublic: 448715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke /// get() - Static factory methods - Return objects of the specified value 4499d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencer static Constant *get(const VectorType *T, const std::vector<Constant*> &); 450715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke static Constant *get(const std::vector<Constant*> &V); 451df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner static Constant *get(Constant*const* Vals, unsigned NumVals) { 452df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner // FIXME: make this the primary ctor method. 453df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner return get(std::vector<Constant*>(Vals, Vals+NumVals)); 454df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner } 455df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner 456efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif /// Transparently provide more efficient getOperand methods. 457efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant); 458efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif 459fa73ea2d9fd785a214256ca44488407b26c5a3dbDan Gohman /// getType - Specialize the getType() method to always return a VectorType, 460715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke /// which reduces the amount of casting needed in parts of the compiler. 461715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke /// 4629d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencer inline const VectorType *getType() const { 4639d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencer return reinterpret_cast<const VectorType*>(Value::getType()); 464715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke } 465715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke 466fa73ea2d9fd785a214256ca44488407b26c5a3dbDan Gohman /// @returns the value for a vector integer constant of the given type that 46758513aa1c22a08118734ac799d935ea2910db35aChris Lattner /// has all its bits set to true. 46858513aa1c22a08118734ac799d935ea2910db35aChris Lattner /// @brief Get the all ones value 4699d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencer static ConstantVector *getAllOnesValue(const VectorType *Ty); 47058513aa1c22a08118734ac799d935ea2910db35aChris Lattner 471715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke /// isNullValue - Return true if this is the value that would be returned by 47207a96765daedf180a7102d39fe56c499878312b7Dan Gohman /// getNullValue. This always returns false because zero vectors are always 473715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke /// created as ConstantAggregateZero objects. 474715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke virtual bool isNullValue() const { return false; } 475715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke 476fa73ea2d9fd785a214256ca44488407b26c5a3dbDan Gohman /// This function will return true iff every element in this vector constant 477fa30182eb84ee70d9f52120d653d63374b99cee6Jim Laskey /// is set to all ones. 478fa30182eb84ee70d9f52120d653d63374b99cee6Jim Laskey /// @returns true iff this constant's emements are all set to all ones. 479fa30182eb84ee70d9f52120d653d63374b99cee6Jim Laskey /// @brief Determine if the value is all ones. 480569cc890e8822c265cec66745791edbd510dac1cJim Laskey bool isAllOnesValue() const; 481fa30182eb84ee70d9f52120d653d63374b99cee6Jim Laskey 4823b7cf0aabafc1c7a89a5a978d4a4307c891027ceDan Gohman /// getSplatValue - If this is a splat constant, meaning that all of the 4833b7cf0aabafc1c7a89a5a978d4a4307c891027ceDan Gohman /// elements have the same value, return that value. Otherwise return NULL. 4843b7cf0aabafc1c7a89a5a978d4a4307c891027ceDan Gohman Constant *getSplatValue(); 4853b7cf0aabafc1c7a89a5a978d4a4307c891027ceDan Gohman 486715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke virtual void destroyConstant(); 48740cdedecf5d871a83363cb7d69a6f6eed525651cChris Lattner virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U); 488715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke 489715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke /// Methods for support type inquiry through isa, cast, and dyn_cast: 4909d6565a5b1fbc4286d6ee638d8f47a3171a9ed7eReid Spencer static inline bool classof(const ConstantVector *) { return true; } 491715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke static bool classof(const Value *V) { 492a1a702cdd23221e6e3f36632be91150138958e9dDan Gohman return V->getValueID() == ConstantVectorVal; 493715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke } 494715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke}; 495715c90ba524e736190a6380695ab337eeb5148beBrian Gaeke 496efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greiftemplate <> 497efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greifstruct OperandTraits<ConstantVector> : VariadicOperandTraits<> { 498efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif}; 499efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif 500efe65369a74871c3140a540a6c95ce5d1f080954Gabor GreifDEFINE_TRANSPARENT_CASTED_OPERAND_ACCESSORS(ConstantVector, Constant) 501efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif 50286e100bd9bf1a1a838902c46de926c79c68cdde3Chris Lattner//===----------------------------------------------------------------------===// 50393aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner/// ConstantPointerNull - a constant pointer value that points to null 50493aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner/// 50548babfa60d3ee1854f33ad93e07abb2b22cf8ab8Chris Lattnerclass ConstantPointerNull : public Constant { 5066cc89aad25155ecd93b5318414851aa46351196dChris Lattner friend struct ConstantCreator<ConstantPointerNull, PointerType, char>; 507051a950000e21935165db56695e35bade668193bGabor Greif void *operator new(size_t, unsigned); // DO NOT IMPLEMENT 508e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattner ConstantPointerNull(const ConstantPointerNull &); // DO NOT IMPLEMENT 5095ef35fdb72f7800e65e27311e38f028e3d400693Chris Lattnerprotected: 510423c2260f95883f7c84ac962e58ac66c3a11efacDan Gohman explicit ConstantPointerNull(const PointerType *T) 5115181ac8081dd6c7d78613a5da8829f81a81e9e63Chris Lattner : Constant(reinterpret_cast<const Type*>(T), 512225e8dd2f512e3e6840ba7cb1570fdc4d56a853fChris Lattner Value::ConstantPointerNullVal, 0, 0) {} 513afba8fe662d65b25b4baf46bb26cc18e1f9cc0a5Gordon Henriksen 514051a950000e21935165db56695e35bade668193bGabor Greifprotected: 515051a950000e21935165db56695e35bade668193bGabor Greif // allocate space for exactly zero operands 516051a950000e21935165db56695e35bade668193bGabor Greif void *operator new(size_t s) { 517051a950000e21935165db56695e35bade668193bGabor Greif return User::operator new(s, 0); 518051a950000e21935165db56695e35bade668193bGabor Greif } 5195ef35fdb72f7800e65e27311e38f028e3d400693Chris Lattnerpublic: 52093aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// get() - Static factory methods - Return objects of the specified value 521e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattner static ConstantPointerNull *get(const PointerType *T); 5225ef35fdb72f7800e65e27311e38f028e3d400693Chris Lattner 52393aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// isNullValue - Return true if this is the value that would be returned by 52493aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// getNullValue. 5250eca13bf58e0a1d6b492ca257d01abc19c4024daChris Lattner virtual bool isNullValue() const { return true; } 5260eca13bf58e0a1d6b492ca257d01abc19c4024daChris Lattner 527e0fbb497ee44f86ec108e4ff8787a848c6ee8655Chris Lattner virtual void destroyConstant(); 528e0fbb497ee44f86ec108e4ff8787a848c6ee8655Chris Lattner 5290f42ba67771627453187e44fea935d6bab7a8152Chris Lattner /// getType - Specialize the getType() method to always return an PointerType, 5300f42ba67771627453187e44fea935d6bab7a8152Chris Lattner /// which reduces the amount of casting needed in parts of the compiler. 5310f42ba67771627453187e44fea935d6bab7a8152Chris Lattner /// 5320f42ba67771627453187e44fea935d6bab7a8152Chris Lattner inline const PointerType *getType() const { 5330f42ba67771627453187e44fea935d6bab7a8152Chris Lattner return reinterpret_cast<const PointerType*>(Value::getType()); 5340f42ba67771627453187e44fea935d6bab7a8152Chris Lattner } 5350f42ba67771627453187e44fea935d6bab7a8152Chris Lattner 53693aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// Methods for support type inquiry through isa, cast, and dyn_cast: 537e9bb2df410f7a22decad9a883f7139d5857c1520Chris Lattner static inline bool classof(const ConstantPointerNull *) { return true; } 53852eb13c58e63e277e83f94f3015dfc0e39a211eeChris Lattner static bool classof(const Value *V) { 539a1a702cdd23221e6e3f36632be91150138958e9dDan Gohman return V->getValueID() == ConstantPointerNullVal; 5405ef35fdb72f7800e65e27311e38f028e3d400693Chris Lattner } 5414cfb15331652f9a2f7e5f755485a2f6eb87a20c6Chris Lattner}; 5424cfb15331652f9a2f7e5f755485a2f6eb87a20c6Chris Lattner 543f4ba6c710c298fe9b492b9cde82ce5efd46afd5dChris Lattner 54486e100bd9bf1a1a838902c46de926c79c68cdde3Chris Lattner/// ConstantExpr - a constant value that is initialized with an expression using 545eecfea4da6771b01997d3dc9648e699b476a3079Chris Lattner/// other constant values. 54686e100bd9bf1a1a838902c46de926c79c68cdde3Chris Lattner/// 547eecfea4da6771b01997d3dc9648e699b476a3079Chris Lattner/// This class uses the standard Instruction opcodes to define the various 548eecfea4da6771b01997d3dc9648e699b476a3079Chris Lattner/// constant expressions. The Opcode field for the ConstantExpr class is 549eecfea4da6771b01997d3dc9648e699b476a3079Chris Lattner/// maintained in the Value::SubclassData field. 55029ab9f83481cd21abf3055c7c32ea1df953ae167Vikram S. Adveclass ConstantExpr : public Constant { 5516cc89aad25155ecd93b5318414851aa46351196dChris Lattner friend struct ConstantCreator<ConstantExpr,Type, 5526cc89aad25155ecd93b5318414851aa46351196dChris Lattner std::pair<unsigned, std::vector<Constant*> > >; 5535133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattner friend struct ConvertConstantType<ConstantExpr, Type>; 5549769ab22265b313171d201b5928688524a01bd87Misha Brukman 5556cc89aad25155ecd93b5318414851aa46351196dChris Lattnerprotected: 5565181ac8081dd6c7d78613a5da8829f81a81e9e63Chris Lattner ConstantExpr(const Type *Ty, unsigned Opcode, Use *Ops, unsigned NumOps) 557eecfea4da6771b01997d3dc9648e699b476a3079Chris Lattner : Constant(Ty, ConstantExprVal, Ops, NumOps) { 558eecfea4da6771b01997d3dc9648e699b476a3079Chris Lattner // Operation type (an Instruction opcode) is stored as the SubclassData. 5599769ab22265b313171d201b5928688524a01bd87Misha Brukman SubclassData = Opcode; 560eecfea4da6771b01997d3dc9648e699b476a3079Chris Lattner } 5615133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattner 5625133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattner // These private methods are used by the type resolution code to create 5635133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattner // ConstantExprs in intermediate forms. 5645133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattner static Constant *getTy(const Type *Ty, unsigned Opcode, 56590fdf9c6debbdcc61076a1e020c3dff4dc71d838Reid Spencer Constant *C1, Constant *C2); 566e4d87aa2de6e52952dca73716386db09aad5a8fdReid Spencer static Constant *getCompareTy(unsigned short pred, Constant *C1, 567e4d87aa2de6e52952dca73716386db09aad5a8fdReid Spencer Constant *C2); 56846a57d8f144af82be46ac925f1c53a3405bcfb3aChris Lattner static Constant *getSelectTy(const Type *Ty, 56946a57d8f144af82be46ac925f1c53a3405bcfb3aChris Lattner Constant *C1, Constant *C2, Constant *C3); 5705133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattner static Constant *getGetElementPtrTy(const Type *Ty, Constant *C, 571fb11053815ee4b3c6593c12aff06fefea96d7d0aChris Lattner Value* const *Idxs, unsigned NumIdxs); 57249b78a569609881811d905960baa7dd1ab801383Robert Bocchino static Constant *getExtractElementTy(const Type *Ty, Constant *Val, 57349b78a569609881811d905960baa7dd1ab801383Robert Bocchino Constant *Idx); 574f999344fa74199f5acefbc492af2b60e67d0ba24Robert Bocchino static Constant *getInsertElementTy(const Type *Ty, Constant *Val, 575f999344fa74199f5acefbc492af2b60e67d0ba24Robert Bocchino Constant *Elt, Constant *Idx); 5769fc18d24ae525a0047718d28e7a8735e8582ddb2Chris Lattner static Constant *getShuffleVectorTy(const Type *Ty, Constant *V1, 5779fc18d24ae525a0047718d28e7a8735e8582ddb2Chris Lattner Constant *V2, Constant *Mask); 578041e2eb51721bcfecee5d9c9fc409ff185526e47Dan Gohman static Constant *getExtractValueTy(const Type *Ty, Constant *Agg, 579041e2eb51721bcfecee5d9c9fc409ff185526e47Dan Gohman Constant * const *Idxs, unsigned NumIdxs); 580041e2eb51721bcfecee5d9c9fc409ff185526e47Dan Gohman static Constant *getInsertValueTy(const Type *Ty, Constant *Agg, 581041e2eb51721bcfecee5d9c9fc409ff185526e47Dan Gohman Constant *Val, 582041e2eb51721bcfecee5d9c9fc409ff185526e47Dan Gohman Constant * const *Idxs, unsigned NumIdxs); 5839769ab22265b313171d201b5928688524a01bd87Misha Brukman 58429ab9f83481cd21abf3055c7c32ea1df953ae167Vikram S. Advepublic: 585fb242b6edc3d92daf49c7d5b2c19d81447aa61bcChris Lattner // Static methods to construct a ConstantExpr of different kinds. Note that 586baf850a51a253a39c60196343d756197bfbb27dbChris Lattner // these methods may return a object that is not an instance of the 587baf850a51a253a39c60196343d756197bfbb27dbChris Lattner // ConstantExpr class, because they will attempt to fold the constant 588baf850a51a253a39c60196343d756197bfbb27dbChris Lattner // expression into something simpler if possible. 5899769ab22265b313171d201b5928688524a01bd87Misha Brukman 59093aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// Cast constant expr 5915133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattner /// 592d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getTrunc (Constant *C, const Type *Ty); 593d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getSExt (Constant *C, const Type *Ty); 594d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getZExt (Constant *C, const Type *Ty); 595d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getFPTrunc (Constant *C, const Type *Ty); 596d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getFPExtend(Constant *C, const Type *Ty); 597d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getUIToFP (Constant *C, const Type *Ty); 598d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getSIToFP (Constant *C, const Type *Ty); 599d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getFPToUI (Constant *C, const Type *Ty); 600d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getFPToSI (Constant *C, const Type *Ty); 601d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getPtrToInt(Constant *C, const Type *Ty); 602d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getIntToPtr(Constant *C, const Type *Ty); 603d977d8651a5cd26a3e1088267f31cade405f2adfReid Spencer static Constant *getBitCast (Constant *C, const Type *Ty); 6043da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer 605efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif /// Transparently provide more efficient getOperand methods. 606efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif DECLARE_TRANSPARENT_OPERAND_ACCESSORS(Constant); 607efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif 6083da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer // @brief Convenience function for getting one of the casting operations 6093da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer // using a CastOps opcode. 6103da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer static Constant *getCast( 6113da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer unsigned ops, ///< The opcode for the conversion 6123da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer Constant *C, ///< The constant to be converted 6133da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer const Type *Ty ///< The type to which the constant is converted 6143da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer ); 6153da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer 616848414e49c7600e3002a4366de52d03a9638b327Reid Spencer // @brief Create a ZExt or BitCast cast constant expression 617848414e49c7600e3002a4366de52d03a9638b327Reid Spencer static Constant *getZExtOrBitCast( 618848414e49c7600e3002a4366de52d03a9638b327Reid Spencer Constant *C, ///< The constant to zext or bitcast 619848414e49c7600e3002a4366de52d03a9638b327Reid Spencer const Type *Ty ///< The type to zext or bitcast C to 620848414e49c7600e3002a4366de52d03a9638b327Reid Spencer ); 621848414e49c7600e3002a4366de52d03a9638b327Reid Spencer 622848414e49c7600e3002a4366de52d03a9638b327Reid Spencer // @brief Create a SExt or BitCast cast constant expression 623848414e49c7600e3002a4366de52d03a9638b327Reid Spencer static Constant *getSExtOrBitCast( 62490fdf9c6debbdcc61076a1e020c3dff4dc71d838Reid Spencer Constant *C, ///< The constant to sext or bitcast 62590fdf9c6debbdcc61076a1e020c3dff4dc71d838Reid Spencer const Type *Ty ///< The type to sext or bitcast C to 626848414e49c7600e3002a4366de52d03a9638b327Reid Spencer ); 627848414e49c7600e3002a4366de52d03a9638b327Reid Spencer 628848414e49c7600e3002a4366de52d03a9638b327Reid Spencer // @brief Create a Trunc or BitCast cast constant expression 629848414e49c7600e3002a4366de52d03a9638b327Reid Spencer static Constant *getTruncOrBitCast( 63090fdf9c6debbdcc61076a1e020c3dff4dc71d838Reid Spencer Constant *C, ///< The constant to trunc or bitcast 63190fdf9c6debbdcc61076a1e020c3dff4dc71d838Reid Spencer const Type *Ty ///< The type to trunc or bitcast C to 632848414e49c7600e3002a4366de52d03a9638b327Reid Spencer ); 633848414e49c7600e3002a4366de52d03a9638b327Reid Spencer 634887ee06f94c5b36ddbe22f54ff816fbc13bb2703Reid Spencer /// @brief Create a BitCast or a PtrToInt cast constant expression 635887ee06f94c5b36ddbe22f54ff816fbc13bb2703Reid Spencer static Constant *getPointerCast( 636887ee06f94c5b36ddbe22f54ff816fbc13bb2703Reid Spencer Constant *C, ///< The pointer value to be casted (operand 0) 637887ee06f94c5b36ddbe22f54ff816fbc13bb2703Reid Spencer const Type *Ty ///< The type to which cast should be made 638887ee06f94c5b36ddbe22f54ff816fbc13bb2703Reid Spencer ); 639887ee06f94c5b36ddbe22f54ff816fbc13bb2703Reid Spencer 64084f3eab017d56b6854155f2350759dc77ac48aadReid Spencer /// @brief Create a ZExt, Bitcast or Trunc for integer -> integer casts 64184f3eab017d56b6854155f2350759dc77ac48aadReid Spencer static Constant *getIntegerCast( 64284f3eab017d56b6854155f2350759dc77ac48aadReid Spencer Constant *C, ///< The integer constant to be casted 64384f3eab017d56b6854155f2350759dc77ac48aadReid Spencer const Type *Ty, ///< The integer type to cast to 64484f3eab017d56b6854155f2350759dc77ac48aadReid Spencer bool isSigned ///< Whether C should be treated as signed or not 64584f3eab017d56b6854155f2350759dc77ac48aadReid Spencer ); 64684f3eab017d56b6854155f2350759dc77ac48aadReid Spencer 64784f3eab017d56b6854155f2350759dc77ac48aadReid Spencer /// @brief Create a FPExt, Bitcast or FPTrunc for fp -> fp casts 64884f3eab017d56b6854155f2350759dc77ac48aadReid Spencer static Constant *getFPCast( 64984f3eab017d56b6854155f2350759dc77ac48aadReid Spencer Constant *C, ///< The integer constant to be casted 65084f3eab017d56b6854155f2350759dc77ac48aadReid Spencer const Type *Ty ///< The integer type to cast to 65184f3eab017d56b6854155f2350759dc77ac48aadReid Spencer ); 65284f3eab017d56b6854155f2350759dc77ac48aadReid Spencer 6533da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer /// @brief Return true if this is a convert constant expression 6543da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer bool isCast() const; 6553da59db637a887474c1b1346c1f3ccf53b6c4663Reid Spencer 6564b94f49091be8e26ce6e49db1268458995299b82Reid Spencer /// @brief Return true if this is a compare constant expression 6574b94f49091be8e26ce6e49db1268458995299b82Reid Spencer bool isCompare() const; 6584b94f49091be8e26ce6e49db1268458995299b82Reid Spencer 65946a57d8f144af82be46ac925f1c53a3405bcfb3aChris Lattner /// Select constant expr 66046a57d8f144af82be46ac925f1c53a3405bcfb3aChris Lattner /// 66146a57d8f144af82be46ac925f1c53a3405bcfb3aChris Lattner static Constant *getSelect(Constant *C, Constant *V1, Constant *V2) { 66246a57d8f144af82be46ac925f1c53a3405bcfb3aChris Lattner return getSelectTy(V1->getType(), C, V1, V2); 66346a57d8f144af82be46ac925f1c53a3405bcfb3aChris Lattner } 66446a57d8f144af82be46ac925f1c53a3405bcfb3aChris Lattner 6657be2a120659cc61e554b04815ed3f1d4f234ecafAlkis Evlogimenos /// getSizeOf constant expr - computes the size of a type in a target 6664647569fe7706e76135a08ca0e5f90a447ccc5b4Gordon Henriksen /// independent way (Note: the return type is an i64). 66760ab1402981a757c5ee785de540a5d0f85839c5dAlkis Evlogimenos /// 66860ab1402981a757c5ee785de540a5d0f85839c5dAlkis Evlogimenos static Constant *getSizeOf(const Type *Ty); 66946a57d8f144af82be46ac925f1c53a3405bcfb3aChris Lattner 6707e208904ae8eeef888c3a6eecd38daa779ca36c9Chris Lattner /// ConstantExpr::get - Return a binary or shift operator constant expression, 6717e208904ae8eeef888c3a6eecd38daa779ca36c9Chris Lattner /// folding if possible. 6725133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattner /// 67390fdf9c6debbdcc61076a1e020c3dff4dc71d838Reid Spencer static Constant *get(unsigned Opcode, Constant *C1, Constant *C2); 67490fdf9c6debbdcc61076a1e020c3dff4dc71d838Reid Spencer 675887ee06f94c5b36ddbe22f54ff816fbc13bb2703Reid Spencer /// @brief Return an ICmp or FCmp comparison operator constant expression. 676e4d87aa2de6e52952dca73716386db09aad5a8fdReid Spencer static Constant *getCompare(unsigned short pred, Constant *C1, Constant *C2); 677e8e4605021141d689493132a9c7c6fce6294937fChris Lattner 6784dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner /// ConstantExpr::get* - Return some common constants without having to 6794dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner /// specify the full Instruction::OPCODE identifier. 6804dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner /// 6814dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner static Constant *getNeg(Constant *C); 6824dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner static Constant *getNot(Constant *C); 6834dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner static Constant *getAdd(Constant *C1, Constant *C2); 6844dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner static Constant *getSub(Constant *C1, Constant *C2); 6854dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner static Constant *getMul(Constant *C1, Constant *C2); 6861628cec4d7fce310d9cde0bcc73997e5a71692c4Reid Spencer static Constant *getUDiv(Constant *C1, Constant *C2); 6871628cec4d7fce310d9cde0bcc73997e5a71692c4Reid Spencer static Constant *getSDiv(Constant *C1, Constant *C2); 6881628cec4d7fce310d9cde0bcc73997e5a71692c4Reid Spencer static Constant *getFDiv(Constant *C1, Constant *C2); 6890a783f783ca05c961234385f5b269d4cf03dbbdbReid Spencer static Constant *getURem(Constant *C1, Constant *C2); // unsigned rem 6900a783f783ca05c961234385f5b269d4cf03dbbdbReid Spencer static Constant *getSRem(Constant *C1, Constant *C2); // signed rem 6910a783f783ca05c961234385f5b269d4cf03dbbdbReid Spencer static Constant *getFRem(Constant *C1, Constant *C2); 6924dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner static Constant *getAnd(Constant *C1, Constant *C2); 6934dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner static Constant *getOr(Constant *C1, Constant *C2); 6944dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner static Constant *getXor(Constant *C1, Constant *C2); 6954647569fe7706e76135a08ca0e5f90a447ccc5b4Gordon Henriksen static Constant *getICmp(unsigned short pred, Constant *LHS, Constant *RHS); 6964647569fe7706e76135a08ca0e5f90a447ccc5b4Gordon Henriksen static Constant *getFCmp(unsigned short pred, Constant *LHS, Constant *RHS); 697ac80ade1580378e484e24c9f66d2fa5b058e5891Nate Begeman static Constant *getVICmp(unsigned short pred, Constant *LHS, Constant *RHS); 698ac80ade1580378e484e24c9f66d2fa5b058e5891Nate Begeman static Constant *getVFCmp(unsigned short pred, Constant *LHS, Constant *RHS); 6994dcb5401e4f6248eb546e4da444ba8e8cf306666Chris Lattner static Constant *getShl(Constant *C1, Constant *C2); 7003822ff5c71478c7c90a50ca57045fb676fcb5005Reid Spencer static Constant *getLShr(Constant *C1, Constant *C2); 7013822ff5c71478c7c90a50ca57045fb676fcb5005Reid Spencer static Constant *getAShr(Constant *C1, Constant *C2); 70202140b025d821ca8cefe5086f90f4d8e0c52ae5bChris Lattner 7037fa6e666ece60455cf9d75eff6e6915bebf05cbcChris Lattner /// Getelementptr form. std::vector<Value*> is only accepted for convenience: 7047fa6e666ece60455cf9d75eff6e6915bebf05cbcChris Lattner /// all elements must be Constant's. 7055133a5cf2ee42b5a4d4c7af2d90b41af769cc307Chris Lattner /// 706fb242b6edc3d92daf49c7d5b2c19d81447aa61bcChris Lattner static Constant *getGetElementPtr(Constant *C, 707fb11053815ee4b3c6593c12aff06fefea96d7d0aChris Lattner Constant* const *IdxList, unsigned NumIdx); 7087fa6e666ece60455cf9d75eff6e6915bebf05cbcChris Lattner static Constant *getGetElementPtr(Constant *C, 709fb11053815ee4b3c6593c12aff06fefea96d7d0aChris Lattner Value* const *IdxList, unsigned NumIdx); 710df7490a27323f194b63db75c0b16708fc7c6cfbeChris Lattner 7119fc18d24ae525a0047718d28e7a8735e8582ddb2Chris Lattner static Constant *getExtractElement(Constant *Vec, Constant *Idx); 7129fc18d24ae525a0047718d28e7a8735e8582ddb2Chris Lattner static Constant *getInsertElement(Constant *Vec, Constant *Elt,Constant *Idx); 7139fc18d24ae525a0047718d28e7a8735e8582ddb2Chris Lattner static Constant *getShuffleVector(Constant *V1, Constant *V2, Constant *Mask); 714041e2eb51721bcfecee5d9c9fc409ff185526e47Dan Gohman static Constant *getExtractValue(Constant *Agg, 715041e2eb51721bcfecee5d9c9fc409ff185526e47Dan Gohman Constant* const *IdxList, unsigned NumIdx); 716041e2eb51721bcfecee5d9c9fc409ff185526e47Dan Gohman static Constant *getInsertValue(Constant *Agg, Constant *Val, 717041e2eb51721bcfecee5d9c9fc409ff185526e47Dan Gohman Constant* const *IdxList, unsigned NumIdx); 718728b6db6fbd3caee7fa25b377f4592160476bb9cReid Spencer 71924d6da5fedcf39891f7d8c5b031c01324b3db545Reid Spencer /// Floating point negation must be implemented with f(x) = -0.0 - x. This 720fa73ea2d9fd785a214256ca44488407b26c5a3dbDan Gohman /// method returns the negative zero constant for floating point or vector 72124d6da5fedcf39891f7d8c5b031c01324b3db545Reid Spencer /// floating point types; for all other types, it returns the null value. 72224d6da5fedcf39891f7d8c5b031c01324b3db545Reid Spencer static Constant *getZeroValueForNegationExpr(const Type *Ty); 72324d6da5fedcf39891f7d8c5b031c01324b3db545Reid Spencer 72493aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// isNullValue - Return true if this is the value that would be returned by 72593aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// getNullValue. 72629ab9f83481cd21abf3055c7c32ea1df953ae167Vikram S. Adve virtual bool isNullValue() const { return false; } 7279769ab22265b313171d201b5928688524a01bd87Misha Brukman 72893aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// getOpcode - Return the opcode at the root of this constant expression 729eecfea4da6771b01997d3dc9648e699b476a3079Chris Lattner unsigned getOpcode() const { return SubclassData; } 73029ab9f83481cd21abf3055c7c32ea1df953ae167Vikram S. Adve 731728b6db6fbd3caee7fa25b377f4592160476bb9cReid Spencer /// getPredicate - Return the ICMP or FCMP predicate value. Assert if this is 732728b6db6fbd3caee7fa25b377f4592160476bb9cReid Spencer /// not an ICMP or FCMP constant expression. 733728b6db6fbd3caee7fa25b377f4592160476bb9cReid Spencer unsigned getPredicate() const; 734728b6db6fbd3caee7fa25b377f4592160476bb9cReid Spencer 73593aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// getOpcodeName - Return a string representation for an opcode. 736e8e4605021141d689493132a9c7c6fce6294937fChris Lattner const char *getOpcodeName() const; 7379769ab22265b313171d201b5928688524a01bd87Misha Brukman 73879ce587cda552abf85f02282cf6cfe36afcaafd8Chris Lattner /// getWithOperandReplaced - Return a constant expression identical to this 73979ce587cda552abf85f02282cf6cfe36afcaafd8Chris Lattner /// one, but with the specified operand set to the specified value. 74079ce587cda552abf85f02282cf6cfe36afcaafd8Chris Lattner Constant *getWithOperandReplaced(unsigned OpNo, Constant *Op) const; 74179ce587cda552abf85f02282cf6cfe36afcaafd8Chris Lattner 7426b8408e9103328b82affbfdf3d3bca236c61f514Chris Lattner /// getWithOperands - This returns the current constant expression with the 7436b8408e9103328b82affbfdf3d3bca236c61f514Chris Lattner /// operands replaced with the specified values. The specified operands must 7446b8408e9103328b82affbfdf3d3bca236c61f514Chris Lattner /// match count and type with the existing ones. 7456b8408e9103328b82affbfdf3d3bca236c61f514Chris Lattner Constant *getWithOperands(const std::vector<Constant*> &Ops) const; 74679ce587cda552abf85f02282cf6cfe36afcaafd8Chris Lattner 747e0fbb497ee44f86ec108e4ff8787a848c6ee8655Chris Lattner virtual void destroyConstant(); 74840cdedecf5d871a83363cb7d69a6f6eed525651cChris Lattner virtual void replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U); 7499769ab22265b313171d201b5928688524a01bd87Misha Brukman 75093aeea3748b11fa213b345edf3c86275a4936a31Chris Lattner /// Methods for support type inquiry through isa, cast, and dyn_cast: 75129ab9f83481cd21abf3055c7c32ea1df953ae167Vikram S. Adve static inline bool classof(const ConstantExpr *) { return true; } 75229ab9f83481cd21abf3055c7c32ea1df953ae167Vikram S. Adve static inline bool classof(const Value *V) { 753a1a702cdd23221e6e3f36632be91150138958e9dDan Gohman return V->getValueID() == ConstantExprVal; 75429ab9f83481cd21abf3055c7c32ea1df953ae167Vikram S. Adve } 75529ab9f83481cd21abf3055c7c32ea1df953ae167Vikram S. Adve}; 75629ab9f83481cd21abf3055c7c32ea1df953ae167Vikram S. Adve 757efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greiftemplate <> 758efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greifstruct OperandTraits<ConstantExpr> : VariadicOperandTraits<1> { 759efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif}; 760efe65369a74871c3140a540a6c95ce5d1f080954Gabor Greif 761efe65369a74871c3140a540a6c95ce5d1f080954Gabor GreifDEFINE_TRANSPARENT_CASTED_OPERAND_ACCESSORS(ConstantExpr, Constant) 762e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner 763e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner//===----------------------------------------------------------------------===// 764e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner/// UndefValue - 'undef' values are things that do not have specified contents. 765e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner/// These are used for a variety of purposes, including global variable 766e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner/// initializers and operands to instructions. 'undef' values can occur with 767e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner/// any type. 768e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner/// 769e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattnerclass UndefValue : public Constant { 770e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner friend struct ConstantCreator<UndefValue, Type, char>; 771051a950000e21935165db56695e35bade668193bGabor Greif void *operator new(size_t, unsigned); // DO NOT IMPLEMENT 772e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner UndefValue(const UndefValue &); // DO NOT IMPLEMENT 773e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattnerprotected: 774423c2260f95883f7c84ac962e58ac66c3a11efacDan Gohman explicit UndefValue(const Type *T) : Constant(T, UndefValueVal, 0, 0) {} 775051a950000e21935165db56695e35bade668193bGabor Greifprotected: 776051a950000e21935165db56695e35bade668193bGabor Greif // allocate space for exactly zero operands 777051a950000e21935165db56695e35bade668193bGabor Greif void *operator new(size_t s) { 778051a950000e21935165db56695e35bade668193bGabor Greif return User::operator new(s, 0); 779051a950000e21935165db56695e35bade668193bGabor Greif } 780e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattnerpublic: 781e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner /// get() - Static factory methods - Return an 'undef' object of the specified 782e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner /// type. 783e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner /// 784e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner static UndefValue *get(const Type *T); 785e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner 786e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner /// isNullValue - Return true if this is the value that would be returned by 787e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner /// getNullValue. 788e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner virtual bool isNullValue() const { return false; } 789e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner 790e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner virtual void destroyConstant(); 791e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner 792e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner /// Methods for support type inquiry through isa, cast, and dyn_cast: 793e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner static inline bool classof(const UndefValue *) { return true; } 794e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner static bool classof(const Value *V) { 795a1a702cdd23221e6e3f36632be91150138958e9dDan Gohman return V->getValueID() == UndefValueVal; 796e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner } 797e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner}; 798e1e922e09007f15aa01b438e5cf6a69c5a67afe4Chris Lattner 799d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke} // End llvm namespace 800d0fde30ce850b78371fd1386338350591f9ff494Brian Gaeke 801009505452b713ed2e3a8e99c5545a6e721c65495Chris Lattner#endif 802