Chris Lattner | 9bc02a4 | 2003-05-13 21:37:02 +0000 | [diff] [blame] | 1 | //===-- Constants.cpp - Implement Constant nodes --------------------------===// |
Misha Brukman | fd93908 | 2005-04-21 23:48:37 +0000 | [diff] [blame] | 2 | // |
John Criswell | b576c94 | 2003-10-20 19:43:21 +0000 | [diff] [blame] | 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
Chris Lattner | 4ee451d | 2007-12-29 20:36:04 +0000 | [diff] [blame] | 5 | // This file is distributed under the University of Illinois Open Source |
| 6 | // License. See LICENSE.TXT for details. |
Misha Brukman | fd93908 | 2005-04-21 23:48:37 +0000 | [diff] [blame] | 7 | // |
John Criswell | b576c94 | 2003-10-20 19:43:21 +0000 | [diff] [blame] | 8 | //===----------------------------------------------------------------------===// |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 9 | // |
Chris Lattner | eb59ca9 | 2011-02-07 20:03:14 +0000 | [diff] [blame] | 10 | // This file implements the Constant* classes. |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 11 | // |
| 12 | //===----------------------------------------------------------------------===// |
| 13 | |
Chris Lattner | 31bcdb8 | 2002-04-28 19:55:58 +0000 | [diff] [blame] | 14 | #include "llvm/Constants.h" |
Chris Lattner | 37f077a | 2009-08-23 04:02:03 +0000 | [diff] [blame] | 15 | #include "LLVMContextImpl.h" |
Chris Lattner | 92f6fea | 2007-02-27 03:05:06 +0000 | [diff] [blame] | 16 | #include "ConstantFold.h" |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 17 | #include "llvm/DerivedTypes.h" |
Reid Spencer | 1c9c8e6 | 2004-07-17 23:48:33 +0000 | [diff] [blame] | 18 | #include "llvm/GlobalValue.h" |
Misha Brukman | 47b14a4 | 2004-07-29 17:30:56 +0000 | [diff] [blame] | 19 | #include "llvm/Instructions.h" |
Chris Lattner | f5ec48d | 2001-10-13 06:57:33 +0000 | [diff] [blame] | 20 | #include "llvm/Module.h" |
Dan Gohman | 5a206ee | 2009-07-18 01:49:22 +0000 | [diff] [blame] | 21 | #include "llvm/Operator.h" |
Nick Lewycky | 21cc446 | 2009-04-04 07:22:01 +0000 | [diff] [blame] | 22 | #include "llvm/ADT/FoldingSet.h" |
Reid Spencer | 551ccae | 2004-09-01 22:55:40 +0000 | [diff] [blame] | 23 | #include "llvm/ADT/StringExtras.h" |
Nick Lewycky | 21cc446 | 2009-04-04 07:22:01 +0000 | [diff] [blame] | 24 | #include "llvm/ADT/StringMap.h" |
Chris Lattner | a4f0b3a | 2006-08-27 12:54:02 +0000 | [diff] [blame] | 25 | #include "llvm/Support/Compiler.h" |
Bill Wendling | 2e3def1 | 2006-11-17 08:03:48 +0000 | [diff] [blame] | 26 | #include "llvm/Support/Debug.h" |
Torok Edwin | 7d696d8 | 2009-07-11 13:10:19 +0000 | [diff] [blame] | 27 | #include "llvm/Support/ErrorHandling.h" |
Chris Lattner | 8a94bf1 | 2006-09-28 00:35:06 +0000 | [diff] [blame] | 28 | #include "llvm/Support/ManagedStatic.h" |
Bill Wendling | 2e3def1 | 2006-11-17 08:03:48 +0000 | [diff] [blame] | 29 | #include "llvm/Support/MathExtras.h" |
Chris Lattner | 37f077a | 2009-08-23 04:02:03 +0000 | [diff] [blame] | 30 | #include "llvm/Support/raw_ostream.h" |
Dan Gohman | e6992f7 | 2009-09-10 23:37:55 +0000 | [diff] [blame] | 31 | #include "llvm/Support/GetElementPtrTypeIterator.h" |
Chris Lattner | 6b6f6ba | 2007-02-20 06:39:57 +0000 | [diff] [blame] | 32 | #include "llvm/ADT/DenseMap.h" |
Chris Lattner | f9021ff | 2007-02-19 20:01:23 +0000 | [diff] [blame] | 33 | #include "llvm/ADT/SmallVector.h" |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 34 | #include "llvm/ADT/STLExtras.h" |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 35 | #include <algorithm> |
Talin | 41ee4e5 | 2011-02-28 23:53:27 +0000 | [diff] [blame] | 36 | #include <cstdarg> |
Chris Lattner | 31f8499 | 2003-11-21 20:23:48 +0000 | [diff] [blame] | 37 | using namespace llvm; |
Brian Gaeke | d0fde30 | 2003-11-11 22:41:34 +0000 | [diff] [blame] | 38 | |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 39 | //===----------------------------------------------------------------------===// |
Chris Lattner | e9bb2df | 2001-12-03 22:26:30 +0000 | [diff] [blame] | 40 | // Constant Class |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 41 | //===----------------------------------------------------------------------===// |
| 42 | |
David Blaikie | 2d24e2a | 2011-12-20 02:50:00 +0000 | [diff] [blame] | 43 | void Constant::anchor() { } |
| 44 | |
Chris Lattner | b447387 | 2011-07-15 05:58:04 +0000 | [diff] [blame] | 45 | bool Constant::isNegativeZeroValue() const { |
| 46 | // Floating point values have an explicit -0.0 value. |
| 47 | if (const ConstantFP *CFP = dyn_cast<ConstantFP>(this)) |
| 48 | return CFP->isZero() && CFP->isNegative(); |
| 49 | |
| 50 | // Otherwise, just use +0.0. |
| 51 | return isNullValue(); |
| 52 | } |
| 53 | |
Chris Lattner | 032c6eb | 2011-07-15 06:14:08 +0000 | [diff] [blame] | 54 | bool Constant::isNullValue() const { |
| 55 | // 0 is null. |
| 56 | if (const ConstantInt *CI = dyn_cast<ConstantInt>(this)) |
| 57 | return CI->isZero(); |
| 58 | |
| 59 | // +0.0 is null. |
| 60 | if (const ConstantFP *CFP = dyn_cast<ConstantFP>(this)) |
| 61 | return CFP->isZero() && !CFP->isNegative(); |
| 62 | |
| 63 | // constant zero is zero for aggregates and cpnull is null for pointers. |
| 64 | return isa<ConstantAggregateZero>(this) || isa<ConstantPointerNull>(this); |
| 65 | } |
| 66 | |
Nadav Rotem | 4c7c0f2 | 2011-08-24 20:18:38 +0000 | [diff] [blame] | 67 | bool Constant::isAllOnesValue() const { |
| 68 | // Check for -1 integers |
| 69 | if (const ConstantInt *CI = dyn_cast<ConstantInt>(this)) |
| 70 | return CI->isMinusOne(); |
| 71 | |
| 72 | // Check for FP which are bitcasted from -1 integers |
| 73 | if (const ConstantFP *CFP = dyn_cast<ConstantFP>(this)) |
| 74 | return CFP->getValueAPF().bitcastToAPInt().isAllOnesValue(); |
| 75 | |
Benjamin Kramer | b518cae | 2011-11-14 19:12:20 +0000 | [diff] [blame] | 76 | // Check for constant vectors which are splats of -1 values. |
Nadav Rotem | 4c7c0f2 | 2011-08-24 20:18:38 +0000 | [diff] [blame] | 77 | if (const ConstantVector *CV = dyn_cast<ConstantVector>(this)) |
Benjamin Kramer | b518cae | 2011-11-14 19:12:20 +0000 | [diff] [blame] | 78 | if (Constant *Splat = CV->getSplatValue()) |
| 79 | return Splat->isAllOnesValue(); |
Nadav Rotem | 4c7c0f2 | 2011-08-24 20:18:38 +0000 | [diff] [blame] | 80 | |
| 81 | return false; |
| 82 | } |
Benjamin Kramer | b518cae | 2011-11-14 19:12:20 +0000 | [diff] [blame] | 83 | |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 84 | // Constructor to create a '0' constant of arbitrary type... |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 85 | Constant *Constant::getNullValue(Type *Ty) { |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 86 | switch (Ty->getTypeID()) { |
| 87 | case Type::IntegerTyID: |
| 88 | return ConstantInt::get(Ty, 0); |
Dan Gohman | ce16339 | 2011-12-17 00:04:22 +0000 | [diff] [blame] | 89 | case Type::HalfTyID: |
| 90 | return ConstantFP::get(Ty->getContext(), |
| 91 | APFloat::getZero(APFloat::IEEEhalf)); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 92 | case Type::FloatTyID: |
Benjamin Kramer | 9838396 | 2010-12-04 14:22:24 +0000 | [diff] [blame] | 93 | return ConstantFP::get(Ty->getContext(), |
| 94 | APFloat::getZero(APFloat::IEEEsingle)); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 95 | case Type::DoubleTyID: |
Benjamin Kramer | 9838396 | 2010-12-04 14:22:24 +0000 | [diff] [blame] | 96 | return ConstantFP::get(Ty->getContext(), |
| 97 | APFloat::getZero(APFloat::IEEEdouble)); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 98 | case Type::X86_FP80TyID: |
Benjamin Kramer | 9838396 | 2010-12-04 14:22:24 +0000 | [diff] [blame] | 99 | return ConstantFP::get(Ty->getContext(), |
| 100 | APFloat::getZero(APFloat::x87DoubleExtended)); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 101 | case Type::FP128TyID: |
| 102 | return ConstantFP::get(Ty->getContext(), |
Benjamin Kramer | 9838396 | 2010-12-04 14:22:24 +0000 | [diff] [blame] | 103 | APFloat::getZero(APFloat::IEEEquad)); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 104 | case Type::PPC_FP128TyID: |
Benjamin Kramer | 9838396 | 2010-12-04 14:22:24 +0000 | [diff] [blame] | 105 | return ConstantFP::get(Ty->getContext(), |
Benjamin Kramer | 299ee18 | 2010-12-04 14:43:08 +0000 | [diff] [blame] | 106 | APFloat(APInt::getNullValue(128))); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 107 | case Type::PointerTyID: |
| 108 | return ConstantPointerNull::get(cast<PointerType>(Ty)); |
| 109 | case Type::StructTyID: |
| 110 | case Type::ArrayTyID: |
| 111 | case Type::VectorTyID: |
| 112 | return ConstantAggregateZero::get(Ty); |
| 113 | default: |
| 114 | // Function, Label, or Opaque type? |
Richard Trieu | 23946fc | 2011-09-21 03:09:09 +0000 | [diff] [blame] | 115 | assert(0 && "Cannot create a null constant of that type!"); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 116 | return 0; |
| 117 | } |
| 118 | } |
| 119 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 120 | Constant *Constant::getIntegerValue(Type *Ty, const APInt &V) { |
| 121 | Type *ScalarTy = Ty->getScalarType(); |
Dan Gohman | 43ee5f7 | 2009-08-03 22:07:33 +0000 | [diff] [blame] | 122 | |
| 123 | // Create the base integer constant. |
| 124 | Constant *C = ConstantInt::get(Ty->getContext(), V); |
| 125 | |
| 126 | // Convert an integer to a pointer, if necessary. |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 127 | if (PointerType *PTy = dyn_cast<PointerType>(ScalarTy)) |
Dan Gohman | 43ee5f7 | 2009-08-03 22:07:33 +0000 | [diff] [blame] | 128 | C = ConstantExpr::getIntToPtr(C, PTy); |
| 129 | |
| 130 | // Broadcast a scalar to a vector, if necessary. |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 131 | if (VectorType *VTy = dyn_cast<VectorType>(Ty)) |
Dan Gohman | 43ee5f7 | 2009-08-03 22:07:33 +0000 | [diff] [blame] | 132 | C = ConstantVector::get(std::vector<Constant *>(VTy->getNumElements(), C)); |
| 133 | |
| 134 | return C; |
| 135 | } |
| 136 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 137 | Constant *Constant::getAllOnesValue(Type *Ty) { |
| 138 | if (IntegerType *ITy = dyn_cast<IntegerType>(Ty)) |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 139 | return ConstantInt::get(Ty->getContext(), |
| 140 | APInt::getAllOnesValue(ITy->getBitWidth())); |
Nadav Rotem | 093399c | 2011-02-17 21:22:27 +0000 | [diff] [blame] | 141 | |
| 142 | if (Ty->isFloatingPointTy()) { |
| 143 | APFloat FL = APFloat::getAllOnesValue(Ty->getPrimitiveSizeInBits(), |
| 144 | !Ty->isPPC_FP128Ty()); |
| 145 | return ConstantFP::get(Ty->getContext(), FL); |
| 146 | } |
| 147 | |
Chris Lattner | 2ca5c86 | 2011-02-15 00:14:00 +0000 | [diff] [blame] | 148 | SmallVector<Constant*, 16> Elts; |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 149 | VectorType *VTy = cast<VectorType>(Ty); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 150 | Elts.resize(VTy->getNumElements(), getAllOnesValue(VTy->getElementType())); |
Nadav Rotem | 4c7c0f2 | 2011-08-24 20:18:38 +0000 | [diff] [blame] | 151 | assert(Elts[0] && "Invalid AllOnes value!"); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 152 | return cast<ConstantVector>(ConstantVector::get(Elts)); |
| 153 | } |
| 154 | |
Chris Lattner | e9bb2df | 2001-12-03 22:26:30 +0000 | [diff] [blame] | 155 | void Constant::destroyConstantImpl() { |
| 156 | // When a Constant is destroyed, there may be lingering |
Chris Lattner | f5ec48d | 2001-10-13 06:57:33 +0000 | [diff] [blame] | 157 | // references to the constant by other constants in the constant pool. These |
Misha Brukman | ef6a6a6 | 2003-08-21 22:14:26 +0000 | [diff] [blame] | 158 | // constants are implicitly dependent on the module that is being deleted, |
Chris Lattner | f5ec48d | 2001-10-13 06:57:33 +0000 | [diff] [blame] | 159 | // but they don't know that. Because we only find out when the CPV is |
| 160 | // deleted, we must now notify all of our users (that should only be |
Chris Lattner | e9bb2df | 2001-12-03 22:26:30 +0000 | [diff] [blame] | 161 | // Constants) that they are, in fact, invalid now and should be deleted. |
Chris Lattner | f5ec48d | 2001-10-13 06:57:33 +0000 | [diff] [blame] | 162 | // |
| 163 | while (!use_empty()) { |
| 164 | Value *V = use_back(); |
| 165 | #ifndef NDEBUG // Only in -g mode... |
Chris Lattner | 37f077a | 2009-08-23 04:02:03 +0000 | [diff] [blame] | 166 | if (!isa<Constant>(V)) { |
David Greene | d2e63b7 | 2010-01-05 01:29:19 +0000 | [diff] [blame] | 167 | dbgs() << "While deleting: " << *this |
Chris Lattner | 37f077a | 2009-08-23 04:02:03 +0000 | [diff] [blame] | 168 | << "\n\nUse still stuck around after Def is destroyed: " |
| 169 | << *V << "\n\n"; |
| 170 | } |
Chris Lattner | f5ec48d | 2001-10-13 06:57:33 +0000 | [diff] [blame] | 171 | #endif |
Vikram S. Adve | 345e0cf | 2002-07-14 23:13:17 +0000 | [diff] [blame] | 172 | assert(isa<Constant>(V) && "References remain to Constant being destroyed"); |
Reid Spencer | 1c9c8e6 | 2004-07-17 23:48:33 +0000 | [diff] [blame] | 173 | Constant *CV = cast<Constant>(V); |
| 174 | CV->destroyConstant(); |
Chris Lattner | f5ec48d | 2001-10-13 06:57:33 +0000 | [diff] [blame] | 175 | |
| 176 | // The constant should remove itself from our use list... |
Vikram S. Adve | 345e0cf | 2002-07-14 23:13:17 +0000 | [diff] [blame] | 177 | assert((use_empty() || use_back() != V) && "Constant not removed!"); |
Chris Lattner | f5ec48d | 2001-10-13 06:57:33 +0000 | [diff] [blame] | 178 | } |
| 179 | |
| 180 | // Value has no outstanding references it is safe to delete it now... |
| 181 | delete this; |
Chris Lattner | 1d87bcf | 2001-10-01 20:11:19 +0000 | [diff] [blame] | 182 | } |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 183 | |
Chris Lattner | 35b89fa | 2006-10-20 00:27:06 +0000 | [diff] [blame] | 184 | /// canTrap - Return true if evaluation of this constant could trap. This is |
| 185 | /// true for things like constant expressions that could divide by zero. |
| 186 | bool Constant::canTrap() const { |
| 187 | assert(getType()->isFirstClassType() && "Cannot evaluate aggregate vals!"); |
| 188 | // The only thing that could possibly trap are constant exprs. |
| 189 | const ConstantExpr *CE = dyn_cast<ConstantExpr>(this); |
| 190 | if (!CE) return false; |
| 191 | |
| 192 | // ConstantExpr traps if any operands can trap. |
| 193 | for (unsigned i = 0, e = getNumOperands(); i != e; ++i) |
Chris Lattner | 0eeb913 | 2009-10-28 05:14:34 +0000 | [diff] [blame] | 194 | if (CE->getOperand(i)->canTrap()) |
Chris Lattner | 35b89fa | 2006-10-20 00:27:06 +0000 | [diff] [blame] | 195 | return true; |
| 196 | |
| 197 | // Otherwise, only specific operations can trap. |
| 198 | switch (CE->getOpcode()) { |
| 199 | default: |
| 200 | return false; |
Reid Spencer | 1628cec | 2006-10-26 06:15:43 +0000 | [diff] [blame] | 201 | case Instruction::UDiv: |
| 202 | case Instruction::SDiv: |
| 203 | case Instruction::FDiv: |
Reid Spencer | 0a783f7 | 2006-11-02 01:53:59 +0000 | [diff] [blame] | 204 | case Instruction::URem: |
| 205 | case Instruction::SRem: |
| 206 | case Instruction::FRem: |
Chris Lattner | 35b89fa | 2006-10-20 00:27:06 +0000 | [diff] [blame] | 207 | // Div and rem can trap if the RHS is not known to be non-zero. |
Chris Lattner | 0eeb913 | 2009-10-28 05:14:34 +0000 | [diff] [blame] | 208 | if (!isa<ConstantInt>(CE->getOperand(1)) ||CE->getOperand(1)->isNullValue()) |
Chris Lattner | 35b89fa | 2006-10-20 00:27:06 +0000 | [diff] [blame] | 209 | return true; |
| 210 | return false; |
| 211 | } |
| 212 | } |
| 213 | |
Chris Lattner | 4a7642e | 2009-11-01 18:11:50 +0000 | [diff] [blame] | 214 | /// isConstantUsed - Return true if the constant has users other than constant |
| 215 | /// exprs and other dangling things. |
| 216 | bool Constant::isConstantUsed() const { |
Gabor Greif | 60ad781 | 2010-03-25 23:06:16 +0000 | [diff] [blame] | 217 | for (const_use_iterator UI = use_begin(), E = use_end(); UI != E; ++UI) { |
Chris Lattner | 4a7642e | 2009-11-01 18:11:50 +0000 | [diff] [blame] | 218 | const Constant *UC = dyn_cast<Constant>(*UI); |
| 219 | if (UC == 0 || isa<GlobalValue>(UC)) |
| 220 | return true; |
| 221 | |
| 222 | if (UC->isConstantUsed()) |
| 223 | return true; |
| 224 | } |
| 225 | return false; |
| 226 | } |
| 227 | |
| 228 | |
Chris Lattner | 7cf12c7 | 2009-07-22 00:05:44 +0000 | [diff] [blame] | 229 | |
| 230 | /// getRelocationInfo - This method classifies the entry according to |
| 231 | /// whether or not it may generate a relocation entry. This must be |
| 232 | /// conservative, so if it might codegen to a relocatable entry, it should say |
| 233 | /// so. The return values are: |
| 234 | /// |
Chris Lattner | 083a1e0 | 2009-07-24 03:27:21 +0000 | [diff] [blame] | 235 | /// NoRelocation: This constant pool entry is guaranteed to never have a |
| 236 | /// relocation applied to it (because it holds a simple constant like |
| 237 | /// '4'). |
| 238 | /// LocalRelocation: This entry has relocations, but the entries are |
| 239 | /// guaranteed to be resolvable by the static linker, so the dynamic |
| 240 | /// linker will never see them. |
| 241 | /// GlobalRelocations: This entry may have arbitrary relocations. |
Chris Lattner | 7cf12c7 | 2009-07-22 00:05:44 +0000 | [diff] [blame] | 242 | /// |
| 243 | /// FIXME: This really should not be in VMCore. |
Chris Lattner | 083a1e0 | 2009-07-24 03:27:21 +0000 | [diff] [blame] | 244 | Constant::PossibleRelocationsTy Constant::getRelocationInfo() const { |
| 245 | if (const GlobalValue *GV = dyn_cast<GlobalValue>(this)) { |
Chris Lattner | 7cf12c7 | 2009-07-22 00:05:44 +0000 | [diff] [blame] | 246 | if (GV->hasLocalLinkage() || GV->hasHiddenVisibility()) |
Chris Lattner | 083a1e0 | 2009-07-24 03:27:21 +0000 | [diff] [blame] | 247 | return LocalRelocation; // Local to this file/library. |
| 248 | return GlobalRelocations; // Global reference. |
Anton Korobeynikov | ab267a2 | 2009-03-29 17:13:18 +0000 | [diff] [blame] | 249 | } |
Chris Lattner | 7cf12c7 | 2009-07-22 00:05:44 +0000 | [diff] [blame] | 250 | |
Chris Lattner | 5d81bef | 2009-10-28 04:12:16 +0000 | [diff] [blame] | 251 | if (const BlockAddress *BA = dyn_cast<BlockAddress>(this)) |
| 252 | return BA->getFunction()->getRelocationInfo(); |
| 253 | |
Chris Lattner | 5099b31 | 2010-01-03 18:09:40 +0000 | [diff] [blame] | 254 | // While raw uses of blockaddress need to be relocated, differences between |
| 255 | // two of them don't when they are for labels in the same function. This is a |
| 256 | // common idiom when creating a table for the indirect goto extension, so we |
| 257 | // handle it efficiently here. |
| 258 | if (const ConstantExpr *CE = dyn_cast<ConstantExpr>(this)) |
| 259 | if (CE->getOpcode() == Instruction::Sub) { |
| 260 | ConstantExpr *LHS = dyn_cast<ConstantExpr>(CE->getOperand(0)); |
| 261 | ConstantExpr *RHS = dyn_cast<ConstantExpr>(CE->getOperand(1)); |
| 262 | if (LHS && RHS && |
| 263 | LHS->getOpcode() == Instruction::PtrToInt && |
| 264 | RHS->getOpcode() == Instruction::PtrToInt && |
| 265 | isa<BlockAddress>(LHS->getOperand(0)) && |
| 266 | isa<BlockAddress>(RHS->getOperand(0)) && |
| 267 | cast<BlockAddress>(LHS->getOperand(0))->getFunction() == |
| 268 | cast<BlockAddress>(RHS->getOperand(0))->getFunction()) |
| 269 | return NoRelocation; |
| 270 | } |
| 271 | |
Chris Lattner | 083a1e0 | 2009-07-24 03:27:21 +0000 | [diff] [blame] | 272 | PossibleRelocationsTy Result = NoRelocation; |
Evan Cheng | afe1581 | 2007-03-08 00:59:12 +0000 | [diff] [blame] | 273 | for (unsigned i = 0, e = getNumOperands(); i != e; ++i) |
Chris Lattner | 0eeb913 | 2009-10-28 05:14:34 +0000 | [diff] [blame] | 274 | Result = std::max(Result, |
| 275 | cast<Constant>(getOperand(i))->getRelocationInfo()); |
Chris Lattner | 7cf12c7 | 2009-07-22 00:05:44 +0000 | [diff] [blame] | 276 | |
| 277 | return Result; |
Evan Cheng | afe1581 | 2007-03-08 00:59:12 +0000 | [diff] [blame] | 278 | } |
| 279 | |
Chris Lattner | 7cf12c7 | 2009-07-22 00:05:44 +0000 | [diff] [blame] | 280 | |
Chris Lattner | 8638144 | 2008-07-10 00:28:11 +0000 | [diff] [blame] | 281 | /// getVectorElements - This method, which is only valid on constant of vector |
| 282 | /// type, returns the elements of the vector in the specified smallvector. |
Chris Lattner | 071aade | 2008-07-14 05:10:41 +0000 | [diff] [blame] | 283 | /// This handles breaking down a vector undef into undef elements, etc. For |
| 284 | /// constant exprs and other cases we can't handle, we return an empty vector. |
Chris Lattner | b29d596 | 2010-02-01 20:48:08 +0000 | [diff] [blame] | 285 | void Constant::getVectorElements(SmallVectorImpl<Constant*> &Elts) const { |
Duncan Sands | 1df9859 | 2010-02-16 11:11:14 +0000 | [diff] [blame] | 286 | assert(getType()->isVectorTy() && "Not a vector constant!"); |
Chris Lattner | 8638144 | 2008-07-10 00:28:11 +0000 | [diff] [blame] | 287 | |
| 288 | if (const ConstantVector *CV = dyn_cast<ConstantVector>(this)) { |
| 289 | for (unsigned i = 0, e = CV->getNumOperands(); i != e; ++i) |
| 290 | Elts.push_back(CV->getOperand(i)); |
| 291 | return; |
| 292 | } |
| 293 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 294 | VectorType *VT = cast<VectorType>(getType()); |
Chris Lattner | 8638144 | 2008-07-10 00:28:11 +0000 | [diff] [blame] | 295 | if (isa<ConstantAggregateZero>(this)) { |
| 296 | Elts.assign(VT->getNumElements(), |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 297 | Constant::getNullValue(VT->getElementType())); |
Chris Lattner | 8638144 | 2008-07-10 00:28:11 +0000 | [diff] [blame] | 298 | return; |
| 299 | } |
| 300 | |
Chris Lattner | 071aade | 2008-07-14 05:10:41 +0000 | [diff] [blame] | 301 | if (isa<UndefValue>(this)) { |
Owen Anderson | 9e9a0d5 | 2009-07-30 23:03:37 +0000 | [diff] [blame] | 302 | Elts.assign(VT->getNumElements(), UndefValue::get(VT->getElementType())); |
Chris Lattner | 071aade | 2008-07-14 05:10:41 +0000 | [diff] [blame] | 303 | return; |
| 304 | } |
| 305 | |
| 306 | // Unknown type, must be constant expr etc. |
Chris Lattner | 8638144 | 2008-07-10 00:28:11 +0000 | [diff] [blame] | 307 | } |
| 308 | |
| 309 | |
Chris Lattner | 13fb0db | 2011-02-18 04:41:42 +0000 | [diff] [blame] | 310 | /// removeDeadUsersOfConstant - If the specified constantexpr is dead, remove |
| 311 | /// it. This involves recursively eliminating any dead users of the |
| 312 | /// constantexpr. |
| 313 | static bool removeDeadUsersOfConstant(const Constant *C) { |
| 314 | if (isa<GlobalValue>(C)) return false; // Cannot remove this |
| 315 | |
| 316 | while (!C->use_empty()) { |
| 317 | const Constant *User = dyn_cast<Constant>(C->use_back()); |
| 318 | if (!User) return false; // Non-constant usage; |
| 319 | if (!removeDeadUsersOfConstant(User)) |
| 320 | return false; // Constant wasn't dead |
| 321 | } |
| 322 | |
| 323 | const_cast<Constant*>(C)->destroyConstant(); |
| 324 | return true; |
| 325 | } |
| 326 | |
| 327 | |
| 328 | /// removeDeadConstantUsers - If there are any dead constant users dangling |
| 329 | /// off of this constant, remove them. This method is useful for clients |
| 330 | /// that want to check to see if a global is unused, but don't want to deal |
| 331 | /// with potentially dead constants hanging off of the globals. |
| 332 | void Constant::removeDeadConstantUsers() const { |
| 333 | Value::const_use_iterator I = use_begin(), E = use_end(); |
| 334 | Value::const_use_iterator LastNonDeadUser = E; |
| 335 | while (I != E) { |
| 336 | const Constant *User = dyn_cast<Constant>(*I); |
| 337 | if (User == 0) { |
| 338 | LastNonDeadUser = I; |
| 339 | ++I; |
| 340 | continue; |
| 341 | } |
| 342 | |
| 343 | if (!removeDeadUsersOfConstant(User)) { |
| 344 | // If the constant wasn't dead, remember that this was the last live use |
| 345 | // and move on to the next constant. |
| 346 | LastNonDeadUser = I; |
| 347 | ++I; |
| 348 | continue; |
| 349 | } |
| 350 | |
| 351 | // If the constant was dead, then the iterator is invalidated. |
| 352 | if (LastNonDeadUser == E) { |
| 353 | I = use_begin(); |
| 354 | if (I == E) break; |
| 355 | } else { |
| 356 | I = LastNonDeadUser; |
| 357 | ++I; |
| 358 | } |
| 359 | } |
| 360 | } |
| 361 | |
| 362 | |
Chris Lattner | 8638144 | 2008-07-10 00:28:11 +0000 | [diff] [blame] | 363 | |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 364 | //===----------------------------------------------------------------------===// |
Chris Lattner | 6b6f6ba | 2007-02-20 06:39:57 +0000 | [diff] [blame] | 365 | // ConstantInt |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 366 | //===----------------------------------------------------------------------===// |
| 367 | |
David Blaikie | 2d24e2a | 2011-12-20 02:50:00 +0000 | [diff] [blame] | 368 | void ConstantInt::anchor() { } |
| 369 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 370 | ConstantInt::ConstantInt(IntegerType *Ty, const APInt& V) |
Chris Lattner | eb41bdd | 2007-02-20 05:55:46 +0000 | [diff] [blame] | 371 | : Constant(Ty, ConstantIntVal, 0, 0), Val(V) { |
Reid Spencer | 532d0ce | 2007-02-26 23:54:03 +0000 | [diff] [blame] | 372 | assert(V.getBitWidth() == Ty->getBitWidth() && "Invalid constant for type"); |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 373 | } |
| 374 | |
Nick Lewycky | d01f50f | 2011-03-06 03:36:19 +0000 | [diff] [blame] | 375 | ConstantInt *ConstantInt::getTrue(LLVMContext &Context) { |
Owen Anderson | 5defacc | 2009-07-31 17:39:07 +0000 | [diff] [blame] | 376 | LLVMContextImpl *pImpl = Context.pImpl; |
Benjamin Kramer | f601d6d | 2010-11-20 18:43:35 +0000 | [diff] [blame] | 377 | if (!pImpl->TheTrueVal) |
| 378 | pImpl->TheTrueVal = ConstantInt::get(Type::getInt1Ty(Context), 1); |
| 379 | return pImpl->TheTrueVal; |
Owen Anderson | 5defacc | 2009-07-31 17:39:07 +0000 | [diff] [blame] | 380 | } |
| 381 | |
Nick Lewycky | d01f50f | 2011-03-06 03:36:19 +0000 | [diff] [blame] | 382 | ConstantInt *ConstantInt::getFalse(LLVMContext &Context) { |
Owen Anderson | 5defacc | 2009-07-31 17:39:07 +0000 | [diff] [blame] | 383 | LLVMContextImpl *pImpl = Context.pImpl; |
Benjamin Kramer | f601d6d | 2010-11-20 18:43:35 +0000 | [diff] [blame] | 384 | if (!pImpl->TheFalseVal) |
| 385 | pImpl->TheFalseVal = ConstantInt::get(Type::getInt1Ty(Context), 0); |
| 386 | return pImpl->TheFalseVal; |
Owen Anderson | 5defacc | 2009-07-31 17:39:07 +0000 | [diff] [blame] | 387 | } |
| 388 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 389 | Constant *ConstantInt::getTrue(Type *Ty) { |
| 390 | VectorType *VTy = dyn_cast<VectorType>(Ty); |
Nick Lewycky | d01f50f | 2011-03-06 03:36:19 +0000 | [diff] [blame] | 391 | if (!VTy) { |
| 392 | assert(Ty->isIntegerTy(1) && "True must be i1 or vector of i1."); |
| 393 | return ConstantInt::getTrue(Ty->getContext()); |
| 394 | } |
| 395 | assert(VTy->getElementType()->isIntegerTy(1) && |
| 396 | "True must be vector of i1 or i1."); |
| 397 | SmallVector<Constant*, 16> Splat(VTy->getNumElements(), |
| 398 | ConstantInt::getTrue(Ty->getContext())); |
| 399 | return ConstantVector::get(Splat); |
| 400 | } |
| 401 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 402 | Constant *ConstantInt::getFalse(Type *Ty) { |
| 403 | VectorType *VTy = dyn_cast<VectorType>(Ty); |
Nick Lewycky | d01f50f | 2011-03-06 03:36:19 +0000 | [diff] [blame] | 404 | if (!VTy) { |
| 405 | assert(Ty->isIntegerTy(1) && "False must be i1 or vector of i1."); |
| 406 | return ConstantInt::getFalse(Ty->getContext()); |
| 407 | } |
| 408 | assert(VTy->getElementType()->isIntegerTy(1) && |
| 409 | "False must be vector of i1 or i1."); |
| 410 | SmallVector<Constant*, 16> Splat(VTy->getNumElements(), |
| 411 | ConstantInt::getFalse(Ty->getContext())); |
| 412 | return ConstantVector::get(Splat); |
| 413 | } |
| 414 | |
Owen Anderson | 5defacc | 2009-07-31 17:39:07 +0000 | [diff] [blame] | 415 | |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 416 | // Get a ConstantInt from an APInt. Note that the value stored in the DenseMap |
| 417 | // as the key, is a DenseMapAPIntKeyInfo::KeyTy which has provided the |
| 418 | // operator== and operator!= to ensure that the DenseMap doesn't attempt to |
| 419 | // compare APInt's of different widths, which would violate an APInt class |
| 420 | // invariant which generates an assertion. |
Nick Lewycky | d01f50f | 2011-03-06 03:36:19 +0000 | [diff] [blame] | 421 | ConstantInt *ConstantInt::get(LLVMContext &Context, const APInt &V) { |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 422 | // Get the corresponding integer type for the bit width of the value. |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 423 | IntegerType *ITy = IntegerType::get(Context, V.getBitWidth()); |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 424 | // get an existing value or the insertion position |
| 425 | DenseMapAPIntKeyInfo::KeyTy Key(V, ITy); |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 426 | ConstantInt *&Slot = Context.pImpl->IntConstants[Key]; |
Owen Anderson | 59d5aac | 2009-10-19 20:11:52 +0000 | [diff] [blame] | 427 | if (!Slot) Slot = new ConstantInt(ITy, V); |
| 428 | return Slot; |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 429 | } |
| 430 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 431 | Constant *ConstantInt::get(Type *Ty, uint64_t V, bool isSigned) { |
Nick Lewycky | d01f50f | 2011-03-06 03:36:19 +0000 | [diff] [blame] | 432 | Constant *C = get(cast<IntegerType>(Ty->getScalarType()), V, isSigned); |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 433 | |
| 434 | // For vectors, broadcast the value. |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 435 | if (VectorType *VTy = dyn_cast<VectorType>(Ty)) |
Chris Lattner | 2ca5c86 | 2011-02-15 00:14:00 +0000 | [diff] [blame] | 436 | return ConstantVector::get(SmallVector<Constant*, |
| 437 | 16>(VTy->getNumElements(), C)); |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 438 | |
| 439 | return C; |
| 440 | } |
| 441 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 442 | ConstantInt* ConstantInt::get(IntegerType* Ty, uint64_t V, |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 443 | bool isSigned) { |
| 444 | return get(Ty->getContext(), APInt(Ty->getBitWidth(), V, isSigned)); |
| 445 | } |
| 446 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 447 | ConstantInt* ConstantInt::getSigned(IntegerType* Ty, int64_t V) { |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 448 | return get(Ty, V, true); |
| 449 | } |
| 450 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 451 | Constant *ConstantInt::getSigned(Type *Ty, int64_t V) { |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 452 | return get(Ty, V, true); |
| 453 | } |
| 454 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 455 | Constant *ConstantInt::get(Type* Ty, const APInt& V) { |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 456 | ConstantInt *C = get(Ty->getContext(), V); |
| 457 | assert(C->getType() == Ty->getScalarType() && |
| 458 | "ConstantInt type doesn't match the type implied by its value!"); |
| 459 | |
| 460 | // For vectors, broadcast the value. |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 461 | if (VectorType *VTy = dyn_cast<VectorType>(Ty)) |
Owen Anderson | af7ec97 | 2009-07-28 21:19:26 +0000 | [diff] [blame] | 462 | return ConstantVector::get( |
Chris Lattner | 2ca5c86 | 2011-02-15 00:14:00 +0000 | [diff] [blame] | 463 | SmallVector<Constant *, 16>(VTy->getNumElements(), C)); |
Owen Anderson | eed707b | 2009-07-24 23:12:02 +0000 | [diff] [blame] | 464 | |
| 465 | return C; |
| 466 | } |
| 467 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 468 | ConstantInt* ConstantInt::get(IntegerType* Ty, StringRef Str, |
Erick Tryzelaar | 0e81f66 | 2009-08-16 23:36:33 +0000 | [diff] [blame] | 469 | uint8_t radix) { |
| 470 | return get(Ty->getContext(), APInt(Ty->getBitWidth(), Str, radix)); |
| 471 | } |
| 472 | |
Chris Lattner | 6b6f6ba | 2007-02-20 06:39:57 +0000 | [diff] [blame] | 473 | //===----------------------------------------------------------------------===// |
Chris Lattner | 9b4ee0c | 2007-02-20 07:17:17 +0000 | [diff] [blame] | 474 | // ConstantFP |
Chris Lattner | 6b6f6ba | 2007-02-20 06:39:57 +0000 | [diff] [blame] | 475 | //===----------------------------------------------------------------------===// |
| 476 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 477 | static const fltSemantics *TypeToFloatSemantics(Type *Ty) { |
Dan Gohman | ce16339 | 2011-12-17 00:04:22 +0000 | [diff] [blame] | 478 | if (Ty->isHalfTy()) |
| 479 | return &APFloat::IEEEhalf; |
Chris Lattner | cf0fe8d | 2009-10-05 05:54:46 +0000 | [diff] [blame] | 480 | if (Ty->isFloatTy()) |
Rafael Espindola | 87d1f47 | 2009-07-15 17:40:42 +0000 | [diff] [blame] | 481 | return &APFloat::IEEEsingle; |
Chris Lattner | cf0fe8d | 2009-10-05 05:54:46 +0000 | [diff] [blame] | 482 | if (Ty->isDoubleTy()) |
Rafael Espindola | 87d1f47 | 2009-07-15 17:40:42 +0000 | [diff] [blame] | 483 | return &APFloat::IEEEdouble; |
Chris Lattner | cf0fe8d | 2009-10-05 05:54:46 +0000 | [diff] [blame] | 484 | if (Ty->isX86_FP80Ty()) |
Rafael Espindola | 87d1f47 | 2009-07-15 17:40:42 +0000 | [diff] [blame] | 485 | return &APFloat::x87DoubleExtended; |
Chris Lattner | cf0fe8d | 2009-10-05 05:54:46 +0000 | [diff] [blame] | 486 | else if (Ty->isFP128Ty()) |
Rafael Espindola | 87d1f47 | 2009-07-15 17:40:42 +0000 | [diff] [blame] | 487 | return &APFloat::IEEEquad; |
| 488 | |
Chris Lattner | cf0fe8d | 2009-10-05 05:54:46 +0000 | [diff] [blame] | 489 | assert(Ty->isPPC_FP128Ty() && "Unknown FP format"); |
Rafael Espindola | 87d1f47 | 2009-07-15 17:40:42 +0000 | [diff] [blame] | 490 | return &APFloat::PPCDoubleDouble; |
| 491 | } |
| 492 | |
David Blaikie | 2d24e2a | 2011-12-20 02:50:00 +0000 | [diff] [blame] | 493 | void ConstantFP::anchor() { } |
| 494 | |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 495 | /// get() - This returns a constant fp for the specified value in the |
| 496 | /// specified type. This should only be used for simple constant values like |
| 497 | /// 2.0/1.0 etc, that are known-valid both as double and as the target format. |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 498 | Constant *ConstantFP::get(Type* Ty, double V) { |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 499 | LLVMContext &Context = Ty->getContext(); |
| 500 | |
| 501 | APFloat FV(V); |
| 502 | bool ignored; |
| 503 | FV.convert(*TypeToFloatSemantics(Ty->getScalarType()), |
| 504 | APFloat::rmNearestTiesToEven, &ignored); |
| 505 | Constant *C = get(Context, FV); |
| 506 | |
| 507 | // For vectors, broadcast the value. |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 508 | if (VectorType *VTy = dyn_cast<VectorType>(Ty)) |
Owen Anderson | af7ec97 | 2009-07-28 21:19:26 +0000 | [diff] [blame] | 509 | return ConstantVector::get( |
Chris Lattner | 2ca5c86 | 2011-02-15 00:14:00 +0000 | [diff] [blame] | 510 | SmallVector<Constant *, 16>(VTy->getNumElements(), C)); |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 511 | |
| 512 | return C; |
| 513 | } |
| 514 | |
Erick Tryzelaar | 0e81f66 | 2009-08-16 23:36:33 +0000 | [diff] [blame] | 515 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 516 | Constant *ConstantFP::get(Type* Ty, StringRef Str) { |
Erick Tryzelaar | 0e81f66 | 2009-08-16 23:36:33 +0000 | [diff] [blame] | 517 | LLVMContext &Context = Ty->getContext(); |
| 518 | |
| 519 | APFloat FV(*TypeToFloatSemantics(Ty->getScalarType()), Str); |
| 520 | Constant *C = get(Context, FV); |
| 521 | |
| 522 | // For vectors, broadcast the value. |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 523 | if (VectorType *VTy = dyn_cast<VectorType>(Ty)) |
Erick Tryzelaar | 0e81f66 | 2009-08-16 23:36:33 +0000 | [diff] [blame] | 524 | return ConstantVector::get( |
Chris Lattner | 2ca5c86 | 2011-02-15 00:14:00 +0000 | [diff] [blame] | 525 | SmallVector<Constant *, 16>(VTy->getNumElements(), C)); |
Erick Tryzelaar | 0e81f66 | 2009-08-16 23:36:33 +0000 | [diff] [blame] | 526 | |
| 527 | return C; |
| 528 | } |
| 529 | |
| 530 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 531 | ConstantFP* ConstantFP::getNegativeZero(Type* Ty) { |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 532 | LLVMContext &Context = Ty->getContext(); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 533 | APFloat apf = cast <ConstantFP>(Constant::getNullValue(Ty))->getValueAPF(); |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 534 | apf.changeSign(); |
| 535 | return get(Context, apf); |
| 536 | } |
| 537 | |
| 538 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 539 | Constant *ConstantFP::getZeroValueForNegation(Type* Ty) { |
| 540 | if (VectorType *PTy = dyn_cast<VectorType>(Ty)) |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 541 | if (PTy->getElementType()->isFloatingPointTy()) { |
Chris Lattner | 2ca5c86 | 2011-02-15 00:14:00 +0000 | [diff] [blame] | 542 | SmallVector<Constant*, 16> zeros(PTy->getNumElements(), |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 543 | getNegativeZero(PTy->getElementType())); |
Chris Lattner | 2ca5c86 | 2011-02-15 00:14:00 +0000 | [diff] [blame] | 544 | return ConstantVector::get(zeros); |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 545 | } |
| 546 | |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 547 | if (Ty->isFloatingPointTy()) |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 548 | return getNegativeZero(Ty); |
| 549 | |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 550 | return Constant::getNullValue(Ty); |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 551 | } |
| 552 | |
| 553 | |
| 554 | // ConstantFP accessors. |
| 555 | ConstantFP* ConstantFP::get(LLVMContext &Context, const APFloat& V) { |
| 556 | DenseMapAPFloatKeyInfo::KeyTy Key(V); |
| 557 | |
| 558 | LLVMContextImpl* pImpl = Context.pImpl; |
| 559 | |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 560 | ConstantFP *&Slot = pImpl->FPConstants[Key]; |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 561 | |
| 562 | if (!Slot) { |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 563 | Type *Ty; |
Dan Gohman | ce16339 | 2011-12-17 00:04:22 +0000 | [diff] [blame] | 564 | if (&V.getSemantics() == &APFloat::IEEEhalf) |
| 565 | Ty = Type::getHalfTy(Context); |
| 566 | else if (&V.getSemantics() == &APFloat::IEEEsingle) |
Owen Anderson | 59d5aac | 2009-10-19 20:11:52 +0000 | [diff] [blame] | 567 | Ty = Type::getFloatTy(Context); |
| 568 | else if (&V.getSemantics() == &APFloat::IEEEdouble) |
| 569 | Ty = Type::getDoubleTy(Context); |
| 570 | else if (&V.getSemantics() == &APFloat::x87DoubleExtended) |
| 571 | Ty = Type::getX86_FP80Ty(Context); |
| 572 | else if (&V.getSemantics() == &APFloat::IEEEquad) |
| 573 | Ty = Type::getFP128Ty(Context); |
| 574 | else { |
| 575 | assert(&V.getSemantics() == &APFloat::PPCDoubleDouble && |
| 576 | "Unknown FP format"); |
| 577 | Ty = Type::getPPC_FP128Ty(Context); |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 578 | } |
Owen Anderson | 59d5aac | 2009-10-19 20:11:52 +0000 | [diff] [blame] | 579 | Slot = new ConstantFP(Ty, V); |
Owen Anderson | 6f83c9c | 2009-07-27 20:59:43 +0000 | [diff] [blame] | 580 | } |
| 581 | |
| 582 | return Slot; |
| 583 | } |
| 584 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 585 | ConstantFP *ConstantFP::getInfinity(Type *Ty, bool Negative) { |
Dan Gohman | f344f7f | 2009-09-25 23:00:48 +0000 | [diff] [blame] | 586 | const fltSemantics &Semantics = *TypeToFloatSemantics(Ty); |
| 587 | return ConstantFP::get(Ty->getContext(), |
| 588 | APFloat::getInf(Semantics, Negative)); |
| 589 | } |
| 590 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 591 | ConstantFP::ConstantFP(Type *Ty, const APFloat& V) |
Dale Johannesen | f04afdb | 2007-08-30 00:23:21 +0000 | [diff] [blame] | 592 | : Constant(Ty, ConstantFPVal, 0, 0), Val(V) { |
Chris Lattner | 288e78f | 2008-04-09 06:38:30 +0000 | [diff] [blame] | 593 | assert(&V.getSemantics() == TypeToFloatSemantics(Ty) && |
| 594 | "FP type Mismatch"); |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 595 | } |
| 596 | |
Chris Lattner | 032c6eb | 2011-07-15 06:14:08 +0000 | [diff] [blame] | 597 | bool ConstantFP::isExactlyValue(const APFloat &V) const { |
Dale Johannesen | f04afdb | 2007-08-30 00:23:21 +0000 | [diff] [blame] | 598 | return Val.bitwiseIsEqual(V); |
Chris Lattner | 9b4ee0c | 2007-02-20 07:17:17 +0000 | [diff] [blame] | 599 | } |
| 600 | |
Chris Lattner | 9b4ee0c | 2007-02-20 07:17:17 +0000 | [diff] [blame] | 601 | //===----------------------------------------------------------------------===// |
Chris Lattner | ff2b7f3 | 2012-01-24 05:42:11 +0000 | [diff] [blame^] | 602 | // ConstantAggregateZero Implementation |
| 603 | //===----------------------------------------------------------------------===// |
| 604 | |
| 605 | /// getSequentialElement - If this CAZ has array or vector type, return a zero |
| 606 | /// with the right element type. |
| 607 | Constant *ConstantAggregateZero::getSequentialElement() { |
| 608 | return Constant::getNullValue( |
| 609 | cast<SequentialType>(getType())->getElementType()); |
| 610 | } |
| 611 | |
| 612 | /// getStructElement - If this CAZ has struct type, return a zero with the |
| 613 | /// right element type for the specified element. |
| 614 | Constant *ConstantAggregateZero::getStructElement(unsigned Elt) { |
| 615 | return Constant::getNullValue( |
| 616 | cast<StructType>(getType())->getElementType(Elt)); |
| 617 | } |
| 618 | |
| 619 | /// getElementValue - Return a zero of the right value for the specified GEP |
| 620 | /// index if we can, otherwise return null (e.g. if C is a ConstantExpr). |
| 621 | Constant *ConstantAggregateZero::getElementValue(Constant *C) { |
| 622 | if (isa<SequentialType>(getType())) |
| 623 | return getSequentialElement(); |
| 624 | return getStructElement(cast<ConstantInt>(C)->getZExtValue()); |
| 625 | } |
| 626 | |
| 627 | //===----------------------------------------------------------------------===// |
| 628 | // UndefValue Implementation |
| 629 | //===----------------------------------------------------------------------===// |
| 630 | |
| 631 | /// getSequentialElement - If this undef has array or vector type, return an |
| 632 | /// undef with the right element type. |
| 633 | UndefValue *UndefValue::getSequentialElement() { |
| 634 | return UndefValue::get(cast<SequentialType>(getType())->getElementType()); |
| 635 | } |
| 636 | |
| 637 | /// getStructElement - If this undef has struct type, return a zero with the |
| 638 | /// right element type for the specified element. |
| 639 | UndefValue *UndefValue::getStructElement(unsigned Elt) { |
| 640 | return UndefValue::get(cast<StructType>(getType())->getElementType(Elt)); |
| 641 | } |
| 642 | |
| 643 | /// getElementValue - Return an undef of the right value for the specified GEP |
| 644 | /// index if we can, otherwise return null (e.g. if C is a ConstantExpr). |
| 645 | UndefValue *UndefValue::getElementValue(Constant *C) { |
| 646 | if (isa<SequentialType>(getType())) |
| 647 | return getSequentialElement(); |
| 648 | return getStructElement(cast<ConstantInt>(C)->getZExtValue()); |
| 649 | } |
| 650 | |
| 651 | |
| 652 | //===----------------------------------------------------------------------===// |
Chris Lattner | 9b4ee0c | 2007-02-20 07:17:17 +0000 | [diff] [blame] | 653 | // ConstantXXX Classes |
| 654 | //===----------------------------------------------------------------------===// |
| 655 | |
| 656 | |
Jay Foad | 166579e | 2011-07-25 10:14:44 +0000 | [diff] [blame] | 657 | ConstantArray::ConstantArray(ArrayType *T, ArrayRef<Constant *> V) |
Gabor Greif | efe6536 | 2008-05-10 08:32:32 +0000 | [diff] [blame] | 658 | : Constant(T, ConstantArrayVal, |
| 659 | OperandTraits<ConstantArray>::op_end(this) - V.size(), |
| 660 | V.size()) { |
Alkis Evlogimenos | e0de1d6 | 2004-09-15 02:32:15 +0000 | [diff] [blame] | 661 | assert(V.size() == T->getNumElements() && |
| 662 | "Invalid initializer vector for constant array"); |
Jay Foad | 166579e | 2011-07-25 10:14:44 +0000 | [diff] [blame] | 663 | for (unsigned i = 0, e = V.size(); i != e; ++i) |
| 664 | assert(V[i]->getType() == T->getElementType() && |
Alkis Evlogimenos | cad90ad | 2004-09-10 04:16:59 +0000 | [diff] [blame] | 665 | "Initializer for array element doesn't match array element type!"); |
Jay Foad | 166579e | 2011-07-25 10:14:44 +0000 | [diff] [blame] | 666 | std::copy(V.begin(), V.end(), op_begin()); |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 667 | } |
| 668 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 669 | Constant *ConstantArray::get(ArrayType *Ty, ArrayRef<Constant*> V) { |
Jeffrey Yasskin | 1fb613c | 2009-09-30 21:08:08 +0000 | [diff] [blame] | 670 | for (unsigned i = 0, e = V.size(); i != e; ++i) { |
| 671 | assert(V[i]->getType() == Ty->getElementType() && |
| 672 | "Wrong type in array element initializer"); |
| 673 | } |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 674 | LLVMContextImpl *pImpl = Ty->getContext().pImpl; |
| 675 | // If this is an all-zero array, return a ConstantAggregateZero object |
| 676 | if (!V.empty()) { |
| 677 | Constant *C = V[0]; |
Chris Lattner | 83738a2 | 2009-12-30 20:25:09 +0000 | [diff] [blame] | 678 | if (!C->isNullValue()) |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 679 | return pImpl->ArrayConstants.getOrCreate(Ty, V); |
Chris Lattner | 83738a2 | 2009-12-30 20:25:09 +0000 | [diff] [blame] | 680 | |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 681 | for (unsigned i = 1, e = V.size(); i != e; ++i) |
Chris Lattner | 83738a2 | 2009-12-30 20:25:09 +0000 | [diff] [blame] | 682 | if (V[i] != C) |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 683 | return pImpl->ArrayConstants.getOrCreate(Ty, V); |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 684 | } |
| 685 | |
Owen Anderson | 9e9a0d5 | 2009-07-30 23:03:37 +0000 | [diff] [blame] | 686 | return ConstantAggregateZero::get(Ty); |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 687 | } |
| 688 | |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 689 | /// ConstantArray::get(const string&) - Return an array that is initialized to |
| 690 | /// contain the specified string. If length is zero then a null terminator is |
| 691 | /// added to the specified string so that it may be used in a natural way. |
| 692 | /// Otherwise, the length parameter specifies how much of the string to use |
| 693 | /// and it won't be null terminated. |
| 694 | /// |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 695 | Constant *ConstantArray::get(LLVMContext &Context, StringRef Str, |
Owen Anderson | 1d0be15 | 2009-08-13 21:58:54 +0000 | [diff] [blame] | 696 | bool AddNull) { |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 697 | std::vector<Constant*> ElementVals; |
Benjamin Kramer | ad2b04c | 2010-08-01 11:43:26 +0000 | [diff] [blame] | 698 | ElementVals.reserve(Str.size() + size_t(AddNull)); |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 699 | for (unsigned i = 0; i < Str.size(); ++i) |
Owen Anderson | 1d0be15 | 2009-08-13 21:58:54 +0000 | [diff] [blame] | 700 | ElementVals.push_back(ConstantInt::get(Type::getInt8Ty(Context), Str[i])); |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 701 | |
| 702 | // Add a null terminator to the string... |
| 703 | if (AddNull) { |
Owen Anderson | 1d0be15 | 2009-08-13 21:58:54 +0000 | [diff] [blame] | 704 | ElementVals.push_back(ConstantInt::get(Type::getInt8Ty(Context), 0)); |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 705 | } |
| 706 | |
Owen Anderson | 1d0be15 | 2009-08-13 21:58:54 +0000 | [diff] [blame] | 707 | ArrayType *ATy = ArrayType::get(Type::getInt8Ty(Context), ElementVals.size()); |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 708 | return get(ATy, ElementVals); |
| 709 | } |
| 710 | |
Chris Lattner | b065b06 | 2011-06-20 04:01:31 +0000 | [diff] [blame] | 711 | /// getTypeForElements - Return an anonymous struct type to use for a constant |
| 712 | /// with the specified set of elements. The list must not be empty. |
| 713 | StructType *ConstantStruct::getTypeForElements(LLVMContext &Context, |
| 714 | ArrayRef<Constant*> V, |
| 715 | bool Packed) { |
Jay Foad | 5fdd6c8 | 2011-07-12 14:06:48 +0000 | [diff] [blame] | 716 | SmallVector<Type*, 16> EltTypes; |
Chris Lattner | b065b06 | 2011-06-20 04:01:31 +0000 | [diff] [blame] | 717 | for (unsigned i = 0, e = V.size(); i != e; ++i) |
| 718 | EltTypes.push_back(V[i]->getType()); |
| 719 | |
| 720 | return StructType::get(Context, EltTypes, Packed); |
| 721 | } |
| 722 | |
| 723 | |
| 724 | StructType *ConstantStruct::getTypeForElements(ArrayRef<Constant*> V, |
| 725 | bool Packed) { |
| 726 | assert(!V.empty() && |
| 727 | "ConstantStruct::getTypeForElements cannot be called on empty list"); |
| 728 | return getTypeForElements(V[0]->getContext(), V, Packed); |
| 729 | } |
| 730 | |
| 731 | |
Jay Foad | 166579e | 2011-07-25 10:14:44 +0000 | [diff] [blame] | 732 | ConstantStruct::ConstantStruct(StructType *T, ArrayRef<Constant *> V) |
Gabor Greif | efe6536 | 2008-05-10 08:32:32 +0000 | [diff] [blame] | 733 | : Constant(T, ConstantStructVal, |
| 734 | OperandTraits<ConstantStruct>::op_end(this) - V.size(), |
| 735 | V.size()) { |
Chris Lattner | f4ef8db | 2011-08-07 04:18:48 +0000 | [diff] [blame] | 736 | assert(V.size() == T->getNumElements() && |
Vikram S. Adve | 345e0cf | 2002-07-14 23:13:17 +0000 | [diff] [blame] | 737 | "Invalid initializer vector for constant structure"); |
Jay Foad | 166579e | 2011-07-25 10:14:44 +0000 | [diff] [blame] | 738 | for (unsigned i = 0, e = V.size(); i != e; ++i) |
| 739 | assert((T->isOpaque() || V[i]->getType() == T->getElementType(i)) && |
Chris Lattner | b843889 | 2003-06-02 17:42:47 +0000 | [diff] [blame] | 740 | "Initializer for struct element doesn't match struct element type!"); |
Jay Foad | 166579e | 2011-07-25 10:14:44 +0000 | [diff] [blame] | 741 | std::copy(V.begin(), V.end(), op_begin()); |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 742 | } |
| 743 | |
Owen Anderson | 8fa3338 | 2009-07-27 22:29:26 +0000 | [diff] [blame] | 744 | // ConstantStruct accessors. |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 745 | Constant *ConstantStruct::get(StructType *ST, ArrayRef<Constant*> V) { |
Chris Lattner | b065b06 | 2011-06-20 04:01:31 +0000 | [diff] [blame] | 746 | // Create a ConstantAggregateZero value if all elements are zeros. |
Owen Anderson | 8fa3338 | 2009-07-27 22:29:26 +0000 | [diff] [blame] | 747 | for (unsigned i = 0, e = V.size(); i != e; ++i) |
Jay Foad | 0df445b | 2011-06-22 08:55:11 +0000 | [diff] [blame] | 748 | if (!V[i]->isNullValue()) |
| 749 | return ST->getContext().pImpl->StructConstants.getOrCreate(ST, V); |
Owen Anderson | 8fa3338 | 2009-07-27 22:29:26 +0000 | [diff] [blame] | 750 | |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 751 | assert((ST->isOpaque() || ST->getNumElements() == V.size()) && |
| 752 | "Incorrect # elements specified to ConstantStruct::get"); |
Chris Lattner | b065b06 | 2011-06-20 04:01:31 +0000 | [diff] [blame] | 753 | return ConstantAggregateZero::get(ST); |
Owen Anderson | 8fa3338 | 2009-07-27 22:29:26 +0000 | [diff] [blame] | 754 | } |
| 755 | |
Chris Lattner | f4ef8db | 2011-08-07 04:18:48 +0000 | [diff] [blame] | 756 | Constant *ConstantStruct::get(StructType *T, ...) { |
Talin | 41ee4e5 | 2011-02-28 23:53:27 +0000 | [diff] [blame] | 757 | va_list ap; |
Chris Lattner | b065b06 | 2011-06-20 04:01:31 +0000 | [diff] [blame] | 758 | SmallVector<Constant*, 8> Values; |
| 759 | va_start(ap, T); |
| 760 | while (Constant *Val = va_arg(ap, llvm::Constant*)) |
Talin | 41ee4e5 | 2011-02-28 23:53:27 +0000 | [diff] [blame] | 761 | Values.push_back(Val); |
Talin | bdcd766 | 2011-03-01 18:00:49 +0000 | [diff] [blame] | 762 | va_end(ap); |
Chris Lattner | b065b06 | 2011-06-20 04:01:31 +0000 | [diff] [blame] | 763 | return get(T, Values); |
Talin | 41ee4e5 | 2011-02-28 23:53:27 +0000 | [diff] [blame] | 764 | } |
| 765 | |
Jay Foad | 166579e | 2011-07-25 10:14:44 +0000 | [diff] [blame] | 766 | ConstantVector::ConstantVector(VectorType *T, ArrayRef<Constant *> V) |
Gabor Greif | efe6536 | 2008-05-10 08:32:32 +0000 | [diff] [blame] | 767 | : Constant(T, ConstantVectorVal, |
| 768 | OperandTraits<ConstantVector>::op_end(this) - V.size(), |
| 769 | V.size()) { |
Jay Foad | 166579e | 2011-07-25 10:14:44 +0000 | [diff] [blame] | 770 | for (size_t i = 0, e = V.size(); i != e; i++) |
| 771 | assert(V[i]->getType() == T->getElementType() && |
Dan Gohman | fa73ea2 | 2007-05-24 14:36:04 +0000 | [diff] [blame] | 772 | "Initializer for vector element doesn't match vector element type!"); |
Jay Foad | 166579e | 2011-07-25 10:14:44 +0000 | [diff] [blame] | 773 | std::copy(V.begin(), V.end(), op_begin()); |
Brian Gaeke | 715c90b | 2004-08-20 06:00:58 +0000 | [diff] [blame] | 774 | } |
| 775 | |
Owen Anderson | af7ec97 | 2009-07-28 21:19:26 +0000 | [diff] [blame] | 776 | // ConstantVector accessors. |
Jay Foad | a0c1384 | 2011-06-22 09:10:19 +0000 | [diff] [blame] | 777 | Constant *ConstantVector::get(ArrayRef<Constant*> V) { |
Jay Foad | 9afc527 | 2011-01-27 14:44:55 +0000 | [diff] [blame] | 778 | assert(!V.empty() && "Vectors can't be empty"); |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 779 | VectorType *T = VectorType::get(V.front()->getType(), V.size()); |
Chris Lattner | 2ca5c86 | 2011-02-15 00:14:00 +0000 | [diff] [blame] | 780 | LLVMContextImpl *pImpl = T->getContext().pImpl; |
Jay Foad | 9afc527 | 2011-01-27 14:44:55 +0000 | [diff] [blame] | 781 | |
Chris Lattner | 2ca5c86 | 2011-02-15 00:14:00 +0000 | [diff] [blame] | 782 | // If this is an all-undef or all-zero vector, return a |
Owen Anderson | af7ec97 | 2009-07-28 21:19:26 +0000 | [diff] [blame] | 783 | // ConstantAggregateZero or UndefValue. |
| 784 | Constant *C = V[0]; |
| 785 | bool isZero = C->isNullValue(); |
| 786 | bool isUndef = isa<UndefValue>(C); |
| 787 | |
| 788 | if (isZero || isUndef) { |
| 789 | for (unsigned i = 1, e = V.size(); i != e; ++i) |
| 790 | if (V[i] != C) { |
| 791 | isZero = isUndef = false; |
| 792 | break; |
| 793 | } |
| 794 | } |
| 795 | |
| 796 | if (isZero) |
Owen Anderson | 9e9a0d5 | 2009-07-30 23:03:37 +0000 | [diff] [blame] | 797 | return ConstantAggregateZero::get(T); |
Owen Anderson | af7ec97 | 2009-07-28 21:19:26 +0000 | [diff] [blame] | 798 | if (isUndef) |
Owen Anderson | 9e9a0d5 | 2009-07-30 23:03:37 +0000 | [diff] [blame] | 799 | return UndefValue::get(T); |
Owen Anderson | af7ec97 | 2009-07-28 21:19:26 +0000 | [diff] [blame] | 800 | |
Owen Anderson | af7ec97 | 2009-07-28 21:19:26 +0000 | [diff] [blame] | 801 | return pImpl->VectorConstants.getOrCreate(T, V); |
| 802 | } |
| 803 | |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 804 | // Utility function for determining if a ConstantExpr is a CastOp or not. This |
| 805 | // can't be inline because we don't want to #include Instruction.h into |
| 806 | // Constant.h |
| 807 | bool ConstantExpr::isCast() const { |
| 808 | return Instruction::isCast(getOpcode()); |
| 809 | } |
| 810 | |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 811 | bool ConstantExpr::isCompare() const { |
Nick Lewycky | 7f6aa2b | 2009-07-08 03:04:38 +0000 | [diff] [blame] | 812 | return getOpcode() == Instruction::ICmp || getOpcode() == Instruction::FCmp; |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 813 | } |
| 814 | |
Dan Gohman | e6992f7 | 2009-09-10 23:37:55 +0000 | [diff] [blame] | 815 | bool ConstantExpr::isGEPWithNoNotionalOverIndexing() const { |
| 816 | if (getOpcode() != Instruction::GetElementPtr) return false; |
| 817 | |
| 818 | gep_type_iterator GEPI = gep_type_begin(this), E = gep_type_end(this); |
Oscar Fuentes | ee56c42 | 2010-08-02 06:00:15 +0000 | [diff] [blame] | 819 | User::const_op_iterator OI = llvm::next(this->op_begin()); |
Dan Gohman | e6992f7 | 2009-09-10 23:37:55 +0000 | [diff] [blame] | 820 | |
| 821 | // Skip the first index, as it has no static limit. |
| 822 | ++GEPI; |
| 823 | ++OI; |
| 824 | |
| 825 | // The remaining indices must be compile-time known integers within the |
| 826 | // bounds of the corresponding notional static array types. |
| 827 | for (; GEPI != E; ++GEPI, ++OI) { |
| 828 | ConstantInt *CI = dyn_cast<ConstantInt>(*OI); |
| 829 | if (!CI) return false; |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 830 | if (ArrayType *ATy = dyn_cast<ArrayType>(*GEPI)) |
Dan Gohman | e6992f7 | 2009-09-10 23:37:55 +0000 | [diff] [blame] | 831 | if (CI->getValue().getActiveBits() > 64 || |
| 832 | CI->getZExtValue() >= ATy->getNumElements()) |
| 833 | return false; |
| 834 | } |
| 835 | |
| 836 | // All the indices checked out. |
| 837 | return true; |
| 838 | } |
| 839 | |
Dan Gohman | 81a0c0b | 2008-05-31 00:58:22 +0000 | [diff] [blame] | 840 | bool ConstantExpr::hasIndices() const { |
| 841 | return getOpcode() == Instruction::ExtractValue || |
| 842 | getOpcode() == Instruction::InsertValue; |
| 843 | } |
| 844 | |
Jay Foad | d30aa5a | 2011-04-13 15:22:40 +0000 | [diff] [blame] | 845 | ArrayRef<unsigned> ConstantExpr::getIndices() const { |
Dan Gohman | 81a0c0b | 2008-05-31 00:58:22 +0000 | [diff] [blame] | 846 | if (const ExtractValueConstantExpr *EVCE = |
| 847 | dyn_cast<ExtractValueConstantExpr>(this)) |
| 848 | return EVCE->Indices; |
Dan Gohman | 1a20357 | 2008-06-23 16:39:44 +0000 | [diff] [blame] | 849 | |
| 850 | return cast<InsertValueConstantExpr>(this)->Indices; |
Dan Gohman | 81a0c0b | 2008-05-31 00:58:22 +0000 | [diff] [blame] | 851 | } |
| 852 | |
Reid Spencer | 728b6db | 2006-12-03 05:48:19 +0000 | [diff] [blame] | 853 | unsigned ConstantExpr::getPredicate() const { |
Chris Lattner | 3e19473 | 2011-07-17 06:01:30 +0000 | [diff] [blame] | 854 | assert(isCompare()); |
Chris Lattner | b7daa84 | 2007-10-18 16:26:24 +0000 | [diff] [blame] | 855 | return ((const CompareConstantExpr*)this)->predicate; |
Reid Spencer | 728b6db | 2006-12-03 05:48:19 +0000 | [diff] [blame] | 856 | } |
Chris Lattner | f4ba6c7 | 2001-10-03 06:12:09 +0000 | [diff] [blame] | 857 | |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 858 | /// getWithOperandReplaced - Return a constant expression identical to this |
| 859 | /// one, but with the specified operand set to the specified value. |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 860 | Constant * |
| 861 | ConstantExpr::getWithOperandReplaced(unsigned OpNo, Constant *Op) const { |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 862 | assert(OpNo < getNumOperands() && "Operand num is out of range!"); |
| 863 | assert(Op->getType() == getOperand(OpNo)->getType() && |
| 864 | "Replacing operand with value of different type!"); |
Chris Lattner | b88a7fb | 2006-07-14 22:20:01 +0000 | [diff] [blame] | 865 | if (getOperand(OpNo) == Op) |
| 866 | return const_cast<ConstantExpr*>(this); |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 867 | |
Chris Lattner | b88a7fb | 2006-07-14 22:20:01 +0000 | [diff] [blame] | 868 | Constant *Op0, *Op1, *Op2; |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 869 | switch (getOpcode()) { |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 870 | case Instruction::Trunc: |
| 871 | case Instruction::ZExt: |
| 872 | case Instruction::SExt: |
| 873 | case Instruction::FPTrunc: |
| 874 | case Instruction::FPExt: |
| 875 | case Instruction::UIToFP: |
| 876 | case Instruction::SIToFP: |
| 877 | case Instruction::FPToUI: |
| 878 | case Instruction::FPToSI: |
| 879 | case Instruction::PtrToInt: |
| 880 | case Instruction::IntToPtr: |
| 881 | case Instruction::BitCast: |
| 882 | return ConstantExpr::getCast(getOpcode(), Op, getType()); |
Chris Lattner | b88a7fb | 2006-07-14 22:20:01 +0000 | [diff] [blame] | 883 | case Instruction::Select: |
| 884 | Op0 = (OpNo == 0) ? Op : getOperand(0); |
| 885 | Op1 = (OpNo == 1) ? Op : getOperand(1); |
| 886 | Op2 = (OpNo == 2) ? Op : getOperand(2); |
| 887 | return ConstantExpr::getSelect(Op0, Op1, Op2); |
| 888 | case Instruction::InsertElement: |
| 889 | Op0 = (OpNo == 0) ? Op : getOperand(0); |
| 890 | Op1 = (OpNo == 1) ? Op : getOperand(1); |
| 891 | Op2 = (OpNo == 2) ? Op : getOperand(2); |
| 892 | return ConstantExpr::getInsertElement(Op0, Op1, Op2); |
| 893 | case Instruction::ExtractElement: |
| 894 | Op0 = (OpNo == 0) ? Op : getOperand(0); |
| 895 | Op1 = (OpNo == 1) ? Op : getOperand(1); |
| 896 | return ConstantExpr::getExtractElement(Op0, Op1); |
| 897 | case Instruction::ShuffleVector: |
| 898 | Op0 = (OpNo == 0) ? Op : getOperand(0); |
| 899 | Op1 = (OpNo == 1) ? Op : getOperand(1); |
| 900 | Op2 = (OpNo == 2) ? Op : getOperand(2); |
| 901 | return ConstantExpr::getShuffleVector(Op0, Op1, Op2); |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 902 | case Instruction::GetElementPtr: { |
Chris Lattner | f9021ff | 2007-02-19 20:01:23 +0000 | [diff] [blame] | 903 | SmallVector<Constant*, 8> Ops; |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 904 | Ops.resize(getNumOperands()-1); |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 905 | for (unsigned i = 1, e = getNumOperands(); i != e; ++i) |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 906 | Ops[i-1] = getOperand(i); |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 907 | if (OpNo == 0) |
Jay Foad | 4b5e207 | 2011-07-21 15:15:37 +0000 | [diff] [blame] | 908 | return |
| 909 | ConstantExpr::getGetElementPtr(Op, Ops, |
| 910 | cast<GEPOperator>(this)->isInBounds()); |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 911 | Ops[OpNo-1] = Op; |
Jay Foad | 4b5e207 | 2011-07-21 15:15:37 +0000 | [diff] [blame] | 912 | return |
| 913 | ConstantExpr::getGetElementPtr(getOperand(0), Ops, |
| 914 | cast<GEPOperator>(this)->isInBounds()); |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 915 | } |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 916 | default: |
| 917 | assert(getNumOperands() == 2 && "Must be binary operator?"); |
Chris Lattner | b88a7fb | 2006-07-14 22:20:01 +0000 | [diff] [blame] | 918 | Op0 = (OpNo == 0) ? Op : getOperand(0); |
| 919 | Op1 = (OpNo == 1) ? Op : getOperand(1); |
Chris Lattner | cafe9bb | 2009-12-29 02:14:09 +0000 | [diff] [blame] | 920 | return ConstantExpr::get(getOpcode(), Op0, Op1, SubclassOptionalData); |
Chris Lattner | b88a7fb | 2006-07-14 22:20:01 +0000 | [diff] [blame] | 921 | } |
| 922 | } |
| 923 | |
| 924 | /// getWithOperands - This returns the current constant expression with the |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 925 | /// operands replaced with the specified values. The specified array must |
| 926 | /// have the same number of operands as our current one. |
Chris Lattner | b88a7fb | 2006-07-14 22:20:01 +0000 | [diff] [blame] | 927 | Constant *ConstantExpr:: |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 928 | getWithOperands(ArrayRef<Constant*> Ops, Type *Ty) const { |
Jay Foad | b81e457 | 2011-04-13 13:46:01 +0000 | [diff] [blame] | 929 | assert(Ops.size() == getNumOperands() && "Operand count mismatch!"); |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 930 | bool AnyChange = Ty != getType(); |
| 931 | for (unsigned i = 0; i != Ops.size(); ++i) |
Chris Lattner | b88a7fb | 2006-07-14 22:20:01 +0000 | [diff] [blame] | 932 | AnyChange |= Ops[i] != getOperand(i); |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 933 | |
Chris Lattner | b88a7fb | 2006-07-14 22:20:01 +0000 | [diff] [blame] | 934 | if (!AnyChange) // No operands changed, return self. |
| 935 | return const_cast<ConstantExpr*>(this); |
| 936 | |
| 937 | switch (getOpcode()) { |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 938 | case Instruction::Trunc: |
| 939 | case Instruction::ZExt: |
| 940 | case Instruction::SExt: |
| 941 | case Instruction::FPTrunc: |
| 942 | case Instruction::FPExt: |
| 943 | case Instruction::UIToFP: |
| 944 | case Instruction::SIToFP: |
| 945 | case Instruction::FPToUI: |
| 946 | case Instruction::FPToSI: |
| 947 | case Instruction::PtrToInt: |
| 948 | case Instruction::IntToPtr: |
| 949 | case Instruction::BitCast: |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 950 | return ConstantExpr::getCast(getOpcode(), Ops[0], Ty); |
Chris Lattner | b88a7fb | 2006-07-14 22:20:01 +0000 | [diff] [blame] | 951 | case Instruction::Select: |
| 952 | return ConstantExpr::getSelect(Ops[0], Ops[1], Ops[2]); |
| 953 | case Instruction::InsertElement: |
| 954 | return ConstantExpr::getInsertElement(Ops[0], Ops[1], Ops[2]); |
| 955 | case Instruction::ExtractElement: |
| 956 | return ConstantExpr::getExtractElement(Ops[0], Ops[1]); |
| 957 | case Instruction::ShuffleVector: |
| 958 | return ConstantExpr::getShuffleVector(Ops[0], Ops[1], Ops[2]); |
Chris Lattner | f9021ff | 2007-02-19 20:01:23 +0000 | [diff] [blame] | 959 | case Instruction::GetElementPtr: |
Jay Foad | 4b5e207 | 2011-07-21 15:15:37 +0000 | [diff] [blame] | 960 | return |
| 961 | ConstantExpr::getGetElementPtr(Ops[0], Ops.slice(1), |
| 962 | cast<GEPOperator>(this)->isInBounds()); |
Reid Spencer | e4d87aa | 2006-12-23 06:05:41 +0000 | [diff] [blame] | 963 | case Instruction::ICmp: |
| 964 | case Instruction::FCmp: |
| 965 | return ConstantExpr::getCompare(getPredicate(), Ops[0], Ops[1]); |
Chris Lattner | b88a7fb | 2006-07-14 22:20:01 +0000 | [diff] [blame] | 966 | default: |
| 967 | assert(getNumOperands() == 2 && "Must be binary operator?"); |
Chris Lattner | cafe9bb | 2009-12-29 02:14:09 +0000 | [diff] [blame] | 968 | return ConstantExpr::get(getOpcode(), Ops[0], Ops[1], SubclassOptionalData); |
Chris Lattner | 1fe8f6b | 2006-07-14 19:37:40 +0000 | [diff] [blame] | 969 | } |
| 970 | } |
| 971 | |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 972 | |
| 973 | //===----------------------------------------------------------------------===// |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 974 | // isValueValidForType implementations |
| 975 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 976 | bool ConstantInt::isValueValidForType(Type *Ty, uint64_t Val) { |
Reid Spencer | a54b7cb | 2007-01-12 07:05:14 +0000 | [diff] [blame] | 977 | unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth(); // assert okay |
Owen Anderson | 1d0be15 | 2009-08-13 21:58:54 +0000 | [diff] [blame] | 978 | if (Ty == Type::getInt1Ty(Ty->getContext())) |
Reid Spencer | a54b7cb | 2007-01-12 07:05:14 +0000 | [diff] [blame] | 979 | return Val == 0 || Val == 1; |
Reid Spencer | 554cec6 | 2007-02-05 23:47:56 +0000 | [diff] [blame] | 980 | if (NumBits >= 64) |
Reid Spencer | a54b7cb | 2007-01-12 07:05:14 +0000 | [diff] [blame] | 981 | return true; // always true, has to fit in largest type |
| 982 | uint64_t Max = (1ll << NumBits) - 1; |
| 983 | return Val <= Max; |
Reid Spencer | 9b11d51 | 2006-12-19 01:28:19 +0000 | [diff] [blame] | 984 | } |
| 985 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 986 | bool ConstantInt::isValueValidForType(Type *Ty, int64_t Val) { |
Reid Spencer | a54b7cb | 2007-01-12 07:05:14 +0000 | [diff] [blame] | 987 | unsigned NumBits = cast<IntegerType>(Ty)->getBitWidth(); // assert okay |
Owen Anderson | 1d0be15 | 2009-08-13 21:58:54 +0000 | [diff] [blame] | 988 | if (Ty == Type::getInt1Ty(Ty->getContext())) |
Reid Spencer | c103057 | 2007-01-19 21:13:56 +0000 | [diff] [blame] | 989 | return Val == 0 || Val == 1 || Val == -1; |
Reid Spencer | 554cec6 | 2007-02-05 23:47:56 +0000 | [diff] [blame] | 990 | if (NumBits >= 64) |
Reid Spencer | a54b7cb | 2007-01-12 07:05:14 +0000 | [diff] [blame] | 991 | return true; // always true, has to fit in largest type |
| 992 | int64_t Min = -(1ll << (NumBits-1)); |
| 993 | int64_t Max = (1ll << (NumBits-1)) - 1; |
| 994 | return (Val >= Min && Val <= Max); |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 995 | } |
| 996 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 997 | bool ConstantFP::isValueValidForType(Type *Ty, const APFloat& Val) { |
Dale Johannesen | f04afdb | 2007-08-30 00:23:21 +0000 | [diff] [blame] | 998 | // convert modifies in place, so make a copy. |
| 999 | APFloat Val2 = APFloat(Val); |
Dale Johannesen | 23a9855 | 2008-10-09 23:00:39 +0000 | [diff] [blame] | 1000 | bool losesInfo; |
Chris Lattner | f70c22b | 2004-06-17 18:19:28 +0000 | [diff] [blame] | 1001 | switch (Ty->getTypeID()) { |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 1002 | default: |
| 1003 | return false; // These can't be represented as floating point! |
| 1004 | |
Dale Johannesen | f04afdb | 2007-08-30 00:23:21 +0000 | [diff] [blame] | 1005 | // FIXME rounding mode needs to be more flexible |
Dan Gohman | ce16339 | 2011-12-17 00:04:22 +0000 | [diff] [blame] | 1006 | case Type::HalfTyID: { |
| 1007 | if (&Val2.getSemantics() == &APFloat::IEEEhalf) |
| 1008 | return true; |
| 1009 | Val2.convert(APFloat::IEEEhalf, APFloat::rmNearestTiesToEven, &losesInfo); |
| 1010 | return !losesInfo; |
| 1011 | } |
Dale Johannesen | 23a9855 | 2008-10-09 23:00:39 +0000 | [diff] [blame] | 1012 | case Type::FloatTyID: { |
| 1013 | if (&Val2.getSemantics() == &APFloat::IEEEsingle) |
| 1014 | return true; |
| 1015 | Val2.convert(APFloat::IEEEsingle, APFloat::rmNearestTiesToEven, &losesInfo); |
| 1016 | return !losesInfo; |
| 1017 | } |
| 1018 | case Type::DoubleTyID: { |
Dan Gohman | ce16339 | 2011-12-17 00:04:22 +0000 | [diff] [blame] | 1019 | if (&Val2.getSemantics() == &APFloat::IEEEhalf || |
| 1020 | &Val2.getSemantics() == &APFloat::IEEEsingle || |
Dale Johannesen | 23a9855 | 2008-10-09 23:00:39 +0000 | [diff] [blame] | 1021 | &Val2.getSemantics() == &APFloat::IEEEdouble) |
| 1022 | return true; |
| 1023 | Val2.convert(APFloat::IEEEdouble, APFloat::rmNearestTiesToEven, &losesInfo); |
| 1024 | return !losesInfo; |
| 1025 | } |
Dale Johannesen | ebbc95d | 2007-08-09 22:51:36 +0000 | [diff] [blame] | 1026 | case Type::X86_FP80TyID: |
Dan Gohman | ce16339 | 2011-12-17 00:04:22 +0000 | [diff] [blame] | 1027 | return &Val2.getSemantics() == &APFloat::IEEEhalf || |
| 1028 | &Val2.getSemantics() == &APFloat::IEEEsingle || |
Dale Johannesen | 9d5f456 | 2007-09-12 03:30:33 +0000 | [diff] [blame] | 1029 | &Val2.getSemantics() == &APFloat::IEEEdouble || |
| 1030 | &Val2.getSemantics() == &APFloat::x87DoubleExtended; |
Dale Johannesen | ebbc95d | 2007-08-09 22:51:36 +0000 | [diff] [blame] | 1031 | case Type::FP128TyID: |
Dan Gohman | ce16339 | 2011-12-17 00:04:22 +0000 | [diff] [blame] | 1032 | return &Val2.getSemantics() == &APFloat::IEEEhalf || |
| 1033 | &Val2.getSemantics() == &APFloat::IEEEsingle || |
Dale Johannesen | 9d5f456 | 2007-09-12 03:30:33 +0000 | [diff] [blame] | 1034 | &Val2.getSemantics() == &APFloat::IEEEdouble || |
| 1035 | &Val2.getSemantics() == &APFloat::IEEEquad; |
Dale Johannesen | a471c2e | 2007-10-11 18:07:22 +0000 | [diff] [blame] | 1036 | case Type::PPC_FP128TyID: |
Dan Gohman | ce16339 | 2011-12-17 00:04:22 +0000 | [diff] [blame] | 1037 | return &Val2.getSemantics() == &APFloat::IEEEhalf || |
| 1038 | &Val2.getSemantics() == &APFloat::IEEEsingle || |
Dale Johannesen | a471c2e | 2007-10-11 18:07:22 +0000 | [diff] [blame] | 1039 | &Val2.getSemantics() == &APFloat::IEEEdouble || |
| 1040 | &Val2.getSemantics() == &APFloat::PPCDoubleDouble; |
Chris Lattner | 0095054 | 2001-06-06 20:29:01 +0000 | [diff] [blame] | 1041 | } |
Chris Lattner | d74ea2b | 2006-05-24 17:04:05 +0000 | [diff] [blame] | 1042 | } |
Chris Lattner | 37bf630 | 2001-07-20 19:16:02 +0000 | [diff] [blame] | 1043 | |
Chris Lattner | ff2b7f3 | 2012-01-24 05:42:11 +0000 | [diff] [blame^] | 1044 | |
Chris Lattner | 531daef | 2001-09-07 16:46:31 +0000 | [diff] [blame] | 1045 | //===----------------------------------------------------------------------===// |
Chris Lattner | 531daef | 2001-09-07 16:46:31 +0000 | [diff] [blame] | 1046 | // Factory Function Implementation |
| 1047 | |
Chris Lattner | 9df0fb4 | 2012-01-23 15:20:12 +0000 | [diff] [blame] | 1048 | ConstantAggregateZero *ConstantAggregateZero::get(Type *Ty) { |
Chris Lattner | 61c70e9 | 2010-08-28 04:09:24 +0000 | [diff] [blame] | 1049 | assert((Ty->isStructTy() || Ty->isArrayTy() || Ty->isVectorTy()) && |
Owen Anderson | 9e9a0d5 | 2009-07-30 23:03:37 +0000 | [diff] [blame] | 1050 | "Cannot create an aggregate zero of non-aggregate type!"); |
| 1051 | |
Chris Lattner | 9df0fb4 | 2012-01-23 15:20:12 +0000 | [diff] [blame] | 1052 | ConstantAggregateZero *&Entry = Ty->getContext().pImpl->CAZConstants[Ty]; |
| 1053 | if (Entry == 0) |
| 1054 | Entry = new ConstantAggregateZero(Ty); |
| 1055 | |
| 1056 | return Entry; |
Owen Anderson | 9e9a0d5 | 2009-07-30 23:03:37 +0000 | [diff] [blame] | 1057 | } |
| 1058 | |
Chris Lattner | ff2b7f3 | 2012-01-24 05:42:11 +0000 | [diff] [blame^] | 1059 | /// destroyConstant - Remove the constant from the constant table. |
Dan Gohman | 0f8b53f | 2009-03-03 02:55:14 +0000 | [diff] [blame] | 1060 | /// |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1061 | void ConstantAggregateZero::destroyConstant() { |
Chris Lattner | 9df0fb4 | 2012-01-23 15:20:12 +0000 | [diff] [blame] | 1062 | getContext().pImpl->CAZConstants.erase(getType()); |
Chris Lattner | 40bbeb5 | 2004-02-15 05:53:04 +0000 | [diff] [blame] | 1063 | destroyConstantImpl(); |
| 1064 | } |
| 1065 | |
Dan Gohman | 0f8b53f | 2009-03-03 02:55:14 +0000 | [diff] [blame] | 1066 | /// destroyConstant - Remove the constant from the constant table... |
| 1067 | /// |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1068 | void ConstantArray::destroyConstant() { |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 1069 | getType()->getContext().pImpl->ArrayConstants.remove(this); |
Chris Lattner | 02ec5ed | 2003-05-23 20:03:32 +0000 | [diff] [blame] | 1070 | destroyConstantImpl(); |
| 1071 | } |
| 1072 | |
Reid Spencer | 3d10b0b | 2007-01-26 07:37:34 +0000 | [diff] [blame] | 1073 | /// isString - This method returns true if the array is an array of i8, and |
| 1074 | /// if the elements of the array are all ConstantInt's. |
Chris Lattner | 13cfdea | 2004-01-14 17:06:38 +0000 | [diff] [blame] | 1075 | bool ConstantArray::isString() const { |
Reid Spencer | 3d10b0b | 2007-01-26 07:37:34 +0000 | [diff] [blame] | 1076 | // Check the element type for i8... |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1077 | if (!getType()->getElementType()->isIntegerTy(8)) |
Chris Lattner | 13cfdea | 2004-01-14 17:06:38 +0000 | [diff] [blame] | 1078 | return false; |
| 1079 | // Check the elements to make sure they are all integers, not constant |
| 1080 | // expressions. |
| 1081 | for (unsigned i = 0, e = getNumOperands(); i != e; ++i) |
| 1082 | if (!isa<ConstantInt>(getOperand(i))) |
| 1083 | return false; |
| 1084 | return true; |
| 1085 | } |
| 1086 | |
Evan Cheng | 22c7030 | 2006-10-26 19:15:05 +0000 | [diff] [blame] | 1087 | /// isCString - This method returns true if the array is a string (see |
Dan Gohman | 0f8b53f | 2009-03-03 02:55:14 +0000 | [diff] [blame] | 1088 | /// isString) and it ends in a null byte \\0 and does not contains any other |
Evan Cheng | 22c7030 | 2006-10-26 19:15:05 +0000 | [diff] [blame] | 1089 | /// null bytes except its terminator. |
Owen Anderson | 1ca29d3 | 2009-07-13 21:27:19 +0000 | [diff] [blame] | 1090 | bool ConstantArray::isCString() const { |
Reid Spencer | 3d10b0b | 2007-01-26 07:37:34 +0000 | [diff] [blame] | 1091 | // Check the element type for i8... |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1092 | if (!getType()->getElementType()->isIntegerTy(8)) |
Evan Cheng | abf6345 | 2006-10-26 21:48:03 +0000 | [diff] [blame] | 1093 | return false; |
Owen Anderson | 1ca29d3 | 2009-07-13 21:27:19 +0000 | [diff] [blame] | 1094 | |
Evan Cheng | abf6345 | 2006-10-26 21:48:03 +0000 | [diff] [blame] | 1095 | // Last element must be a null. |
Owen Anderson | 1ca29d3 | 2009-07-13 21:27:19 +0000 | [diff] [blame] | 1096 | if (!getOperand(getNumOperands()-1)->isNullValue()) |
Evan Cheng | abf6345 | 2006-10-26 21:48:03 +0000 | [diff] [blame] | 1097 | return false; |
| 1098 | // Other elements must be non-null integers. |
| 1099 | for (unsigned i = 0, e = getNumOperands()-1; i != e; ++i) { |
| 1100 | if (!isa<ConstantInt>(getOperand(i))) |
Evan Cheng | 22c7030 | 2006-10-26 19:15:05 +0000 | [diff] [blame] | 1101 | return false; |
Owen Anderson | 1ca29d3 | 2009-07-13 21:27:19 +0000 | [diff] [blame] | 1102 | if (getOperand(i)->isNullValue()) |
Evan Cheng | abf6345 | 2006-10-26 21:48:03 +0000 | [diff] [blame] | 1103 | return false; |
| 1104 | } |
Evan Cheng | 22c7030 | 2006-10-26 19:15:05 +0000 | [diff] [blame] | 1105 | return true; |
| 1106 | } |
| 1107 | |
| 1108 | |
Jay Foad | 4f91054 | 2011-06-28 08:24:19 +0000 | [diff] [blame] | 1109 | /// convertToString - Helper function for getAsString() and getAsCString(). |
Chris Lattner | 3e19473 | 2011-07-17 06:01:30 +0000 | [diff] [blame] | 1110 | static std::string convertToString(const User *U, unsigned len) { |
Jay Foad | 4f91054 | 2011-06-28 08:24:19 +0000 | [diff] [blame] | 1111 | std::string Result; |
| 1112 | Result.reserve(len); |
| 1113 | for (unsigned i = 0; i != len; ++i) |
| 1114 | Result.push_back((char)cast<ConstantInt>(U->getOperand(i))->getZExtValue()); |
| 1115 | return Result; |
| 1116 | } |
| 1117 | |
| 1118 | /// getAsString - If this array is isString(), then this method converts the |
| 1119 | /// array to an std::string and returns it. Otherwise, it asserts out. |
Dan Gohman | 0f8b53f | 2009-03-03 02:55:14 +0000 | [diff] [blame] | 1120 | /// |
Chris Lattner | 93aeea3 | 2002-08-26 17:53:56 +0000 | [diff] [blame] | 1121 | std::string ConstantArray::getAsString() const { |
Chris Lattner | 13cfdea | 2004-01-14 17:06:38 +0000 | [diff] [blame] | 1122 | assert(isString() && "Not a string!"); |
Jay Foad | 4f91054 | 2011-06-28 08:24:19 +0000 | [diff] [blame] | 1123 | return convertToString(this, getNumOperands()); |
| 1124 | } |
| 1125 | |
| 1126 | |
| 1127 | /// getAsCString - If this array is isCString(), then this method converts the |
| 1128 | /// array (without the trailing null byte) to an std::string and returns it. |
| 1129 | /// Otherwise, it asserts out. |
| 1130 | /// |
| 1131 | std::string ConstantArray::getAsCString() const { |
| 1132 | assert(isCString() && "Not a string!"); |
| 1133 | return convertToString(this, getNumOperands() - 1); |
Chris Lattner | 93aeea3 | 2002-08-26 17:53:56 +0000 | [diff] [blame] | 1134 | } |
| 1135 | |
| 1136 | |
Chris Lattner | e9bb2df | 2001-12-03 22:26:30 +0000 | [diff] [blame] | 1137 | //---- ConstantStruct::get() implementation... |
Chris Lattner | 531daef | 2001-09-07 16:46:31 +0000 | [diff] [blame] | 1138 | // |
Chris Lattner | ed468e37 | 2003-10-05 00:17:43 +0000 | [diff] [blame] | 1139 | |
Chris Lattner | f5ec48d | 2001-10-13 06:57:33 +0000 | [diff] [blame] | 1140 | // destroyConstant - Remove the constant from the constant table... |
Chris Lattner | 6a57baa | 2001-10-03 15:39:36 +0000 | [diff] [blame] | 1141 | // |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1142 | void ConstantStruct::destroyConstant() { |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 1143 | getType()->getContext().pImpl->StructConstants.remove(this); |
Chris Lattner | f5ec48d | 2001-10-13 06:57:33 +0000 | [diff] [blame] | 1144 | destroyConstantImpl(); |
| 1145 | } |
Chris Lattner | 6a57baa | 2001-10-03 15:39:36 +0000 | [diff] [blame] | 1146 | |
Brian Gaeke | 715c90b | 2004-08-20 06:00:58 +0000 | [diff] [blame] | 1147 | // destroyConstant - Remove the constant from the constant table... |
| 1148 | // |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1149 | void ConstantVector::destroyConstant() { |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 1150 | getType()->getContext().pImpl->VectorConstants.remove(this); |
Brian Gaeke | 715c90b | 2004-08-20 06:00:58 +0000 | [diff] [blame] | 1151 | destroyConstantImpl(); |
| 1152 | } |
| 1153 | |
Dan Gohman | 3b7cf0a | 2007-10-17 17:51:30 +0000 | [diff] [blame] | 1154 | /// getSplatValue - If this is a splat constant, where all of the |
| 1155 | /// elements have the same value, return that value. Otherwise return null. |
Duncan Sands | 7681c6d | 2011-02-01 08:39:12 +0000 | [diff] [blame] | 1156 | Constant *ConstantVector::getSplatValue() const { |
Dan Gohman | 3b7cf0a | 2007-10-17 17:51:30 +0000 | [diff] [blame] | 1157 | // Check out first element. |
| 1158 | Constant *Elt = getOperand(0); |
| 1159 | // Then make sure all remaining elements point to the same value. |
| 1160 | for (unsigned I = 1, E = getNumOperands(); I < E; ++I) |
Chris Lattner | 3e19473 | 2011-07-17 06:01:30 +0000 | [diff] [blame] | 1161 | if (getOperand(I) != Elt) |
| 1162 | return 0; |
Dan Gohman | 3b7cf0a | 2007-10-17 17:51:30 +0000 | [diff] [blame] | 1163 | return Elt; |
| 1164 | } |
| 1165 | |
Chris Lattner | 2ee11ec | 2009-10-28 00:01:44 +0000 | [diff] [blame] | 1166 | //---- ConstantPointerNull::get() implementation. |
Chris Lattner | f5ec48d | 2001-10-13 06:57:33 +0000 | [diff] [blame] | 1167 | // |
Chris Lattner | 02ec5ed | 2003-05-23 20:03:32 +0000 | [diff] [blame] | 1168 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1169 | ConstantPointerNull *ConstantPointerNull::get(PointerType *Ty) { |
Chris Lattner | 9df0fb4 | 2012-01-23 15:20:12 +0000 | [diff] [blame] | 1170 | ConstantPointerNull *&Entry = Ty->getContext().pImpl->CPNConstants[Ty]; |
| 1171 | if (Entry == 0) |
| 1172 | Entry = new ConstantPointerNull(Ty); |
| 1173 | |
| 1174 | return Entry; |
Chris Lattner | 6a57baa | 2001-10-03 15:39:36 +0000 | [diff] [blame] | 1175 | } |
| 1176 | |
Chris Lattner | 41661fd | 2002-08-18 00:40:04 +0000 | [diff] [blame] | 1177 | // destroyConstant - Remove the constant from the constant table... |
| 1178 | // |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1179 | void ConstantPointerNull::destroyConstant() { |
Chris Lattner | 9df0fb4 | 2012-01-23 15:20:12 +0000 | [diff] [blame] | 1180 | getContext().pImpl->CPNConstants.erase(getType()); |
| 1181 | // Free the constant and any dangling references to it. |
Chris Lattner | 41661fd | 2002-08-18 00:40:04 +0000 | [diff] [blame] | 1182 | destroyConstantImpl(); |
| 1183 | } |
| 1184 | |
| 1185 | |
Chris Lattner | 2ee11ec | 2009-10-28 00:01:44 +0000 | [diff] [blame] | 1186 | //---- UndefValue::get() implementation. |
Chris Lattner | b9f1859 | 2004-10-16 18:07:16 +0000 | [diff] [blame] | 1187 | // |
| 1188 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1189 | UndefValue *UndefValue::get(Type *Ty) { |
Chris Lattner | 9df0fb4 | 2012-01-23 15:20:12 +0000 | [diff] [blame] | 1190 | UndefValue *&Entry = Ty->getContext().pImpl->UVConstants[Ty]; |
| 1191 | if (Entry == 0) |
| 1192 | Entry = new UndefValue(Ty); |
| 1193 | |
| 1194 | return Entry; |
Chris Lattner | b9f1859 | 2004-10-16 18:07:16 +0000 | [diff] [blame] | 1195 | } |
| 1196 | |
| 1197 | // destroyConstant - Remove the constant from the constant table. |
| 1198 | // |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1199 | void UndefValue::destroyConstant() { |
Chris Lattner | 9df0fb4 | 2012-01-23 15:20:12 +0000 | [diff] [blame] | 1200 | // Free the constant and any dangling references to it. |
| 1201 | getContext().pImpl->UVConstants.erase(getType()); |
Chris Lattner | b9f1859 | 2004-10-16 18:07:16 +0000 | [diff] [blame] | 1202 | destroyConstantImpl(); |
| 1203 | } |
| 1204 | |
Chris Lattner | 2ee11ec | 2009-10-28 00:01:44 +0000 | [diff] [blame] | 1205 | //---- BlockAddress::get() implementation. |
| 1206 | // |
| 1207 | |
| 1208 | BlockAddress *BlockAddress::get(BasicBlock *BB) { |
| 1209 | assert(BB->getParent() != 0 && "Block must have a parent"); |
| 1210 | return get(BB->getParent(), BB); |
| 1211 | } |
| 1212 | |
| 1213 | BlockAddress *BlockAddress::get(Function *F, BasicBlock *BB) { |
| 1214 | BlockAddress *&BA = |
| 1215 | F->getContext().pImpl->BlockAddresses[std::make_pair(F, BB)]; |
| 1216 | if (BA == 0) |
| 1217 | BA = new BlockAddress(F, BB); |
| 1218 | |
| 1219 | assert(BA->getFunction() == F && "Basic block moved between functions"); |
| 1220 | return BA; |
| 1221 | } |
| 1222 | |
| 1223 | BlockAddress::BlockAddress(Function *F, BasicBlock *BB) |
| 1224 | : Constant(Type::getInt8PtrTy(F->getContext()), Value::BlockAddressVal, |
| 1225 | &Op<0>(), 2) { |
Chris Lattner | d0ec235 | 2009-11-01 03:03:03 +0000 | [diff] [blame] | 1226 | setOperand(0, F); |
| 1227 | setOperand(1, BB); |
Chris Lattner | cdfc940 | 2009-11-01 01:27:45 +0000 | [diff] [blame] | 1228 | BB->AdjustBlockAddressRefCount(1); |
Chris Lattner | 2ee11ec | 2009-10-28 00:01:44 +0000 | [diff] [blame] | 1229 | } |
| 1230 | |
| 1231 | |
| 1232 | // destroyConstant - Remove the constant from the constant table. |
| 1233 | // |
| 1234 | void BlockAddress::destroyConstant() { |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 1235 | getFunction()->getType()->getContext().pImpl |
Chris Lattner | 2ee11ec | 2009-10-28 00:01:44 +0000 | [diff] [blame] | 1236 | ->BlockAddresses.erase(std::make_pair(getFunction(), getBasicBlock())); |
Chris Lattner | cdfc940 | 2009-11-01 01:27:45 +0000 | [diff] [blame] | 1237 | getBasicBlock()->AdjustBlockAddressRefCount(-1); |
Chris Lattner | 2ee11ec | 2009-10-28 00:01:44 +0000 | [diff] [blame] | 1238 | destroyConstantImpl(); |
| 1239 | } |
| 1240 | |
| 1241 | void BlockAddress::replaceUsesOfWithOnConstant(Value *From, Value *To, Use *U) { |
| 1242 | // This could be replacing either the Basic Block or the Function. In either |
| 1243 | // case, we have to remove the map entry. |
| 1244 | Function *NewF = getFunction(); |
| 1245 | BasicBlock *NewBB = getBasicBlock(); |
| 1246 | |
| 1247 | if (U == &Op<0>()) |
| 1248 | NewF = cast<Function>(To); |
| 1249 | else |
| 1250 | NewBB = cast<BasicBlock>(To); |
| 1251 | |
| 1252 | // See if the 'new' entry already exists, if not, just update this in place |
| 1253 | // and return early. |
| 1254 | BlockAddress *&NewBA = |
| 1255 | getContext().pImpl->BlockAddresses[std::make_pair(NewF, NewBB)]; |
| 1256 | if (NewBA == 0) { |
Chris Lattner | d0ec235 | 2009-11-01 03:03:03 +0000 | [diff] [blame] | 1257 | getBasicBlock()->AdjustBlockAddressRefCount(-1); |
| 1258 | |
Chris Lattner | 2ee11ec | 2009-10-28 00:01:44 +0000 | [diff] [blame] | 1259 | // Remove the old entry, this can't cause the map to rehash (just a |
| 1260 | // tombstone will get added). |
| 1261 | getContext().pImpl->BlockAddresses.erase(std::make_pair(getFunction(), |
| 1262 | getBasicBlock())); |
| 1263 | NewBA = this; |
Chris Lattner | d0ec235 | 2009-11-01 03:03:03 +0000 | [diff] [blame] | 1264 | setOperand(0, NewF); |
| 1265 | setOperand(1, NewBB); |
| 1266 | getBasicBlock()->AdjustBlockAddressRefCount(1); |
Chris Lattner | 2ee11ec | 2009-10-28 00:01:44 +0000 | [diff] [blame] | 1267 | return; |
| 1268 | } |
| 1269 | |
| 1270 | // Otherwise, I do need to replace this with an existing value. |
| 1271 | assert(NewBA != this && "I didn't contain From!"); |
| 1272 | |
| 1273 | // Everyone using this now uses the replacement. |
Chris Lattner | 678f9e0 | 2011-07-15 06:18:52 +0000 | [diff] [blame] | 1274 | replaceAllUsesWith(NewBA); |
Chris Lattner | 2ee11ec | 2009-10-28 00:01:44 +0000 | [diff] [blame] | 1275 | |
| 1276 | destroyConstant(); |
| 1277 | } |
| 1278 | |
| 1279 | //---- ConstantExpr::get() implementations. |
Vikram S. Adve | 345e0cf | 2002-07-14 23:13:17 +0000 | [diff] [blame] | 1280 | // |
Reid Spencer | 79e21d3 | 2006-12-31 05:26:44 +0000 | [diff] [blame] | 1281 | |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1282 | /// This is a utility function to handle folding of casts and lookup of the |
Duncan Sands | 66a1a05 | 2008-03-30 19:38:55 +0000 | [diff] [blame] | 1283 | /// cast in the ExprConstants map. It is used by the various get* methods below. |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1284 | static inline Constant *getFoldedCast( |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1285 | Instruction::CastOps opc, Constant *C, Type *Ty) { |
Chris Lattner | 9eacf8a | 2003-10-07 22:19:19 +0000 | [diff] [blame] | 1286 | assert(Ty->isFirstClassType() && "Cannot cast to an aggregate type!"); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1287 | // Fold a few common cases |
Chris Lattner | b29d596 | 2010-02-01 20:48:08 +0000 | [diff] [blame] | 1288 | if (Constant *FC = ConstantFoldCastInstruction(opc, C, Ty)) |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1289 | return FC; |
Chris Lattner | d628f6a | 2003-04-17 19:24:48 +0000 | [diff] [blame] | 1290 | |
Owen Anderson | d03eecd | 2009-08-04 20:25:11 +0000 | [diff] [blame] | 1291 | LLVMContextImpl *pImpl = Ty->getContext().pImpl; |
| 1292 | |
Vikram S. Adve | d0b1bb0 | 2002-07-15 18:19:33 +0000 | [diff] [blame] | 1293 | // Look up the constant in the table first to ensure uniqueness |
Chris Lattner | 9bc02a4 | 2003-05-13 21:37:02 +0000 | [diff] [blame] | 1294 | std::vector<Constant*> argVec(1, C); |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1295 | ExprMapKeyType Key(opc, argVec); |
Owen Anderson | 3e456ab | 2009-06-17 18:40:29 +0000 | [diff] [blame] | 1296 | |
Owen Anderson | d03eecd | 2009-08-04 20:25:11 +0000 | [diff] [blame] | 1297 | return pImpl->ExprConstants.getOrCreate(Ty, Key); |
Vikram S. Adve | 345e0cf | 2002-07-14 23:13:17 +0000 | [diff] [blame] | 1298 | } |
Reid Spencer | 7858b33 | 2006-12-05 19:14:13 +0000 | [diff] [blame] | 1299 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1300 | Constant *ConstantExpr::getCast(unsigned oc, Constant *C, Type *Ty) { |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1301 | Instruction::CastOps opc = Instruction::CastOps(oc); |
| 1302 | assert(Instruction::isCast(opc) && "opcode out of range"); |
| 1303 | assert(C && Ty && "Null arguments to getCast"); |
Chris Lattner | 0b68a00 | 2010-01-26 21:51:43 +0000 | [diff] [blame] | 1304 | assert(CastInst::castIsValid(opc, C, Ty) && "Invalid constantexpr cast!"); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1305 | |
| 1306 | switch (opc) { |
Chris Lattner | 0b68a00 | 2010-01-26 21:51:43 +0000 | [diff] [blame] | 1307 | default: |
| 1308 | llvm_unreachable("Invalid cast opcode"); |
Chris Lattner | 0b68a00 | 2010-01-26 21:51:43 +0000 | [diff] [blame] | 1309 | case Instruction::Trunc: return getTrunc(C, Ty); |
| 1310 | case Instruction::ZExt: return getZExt(C, Ty); |
| 1311 | case Instruction::SExt: return getSExt(C, Ty); |
| 1312 | case Instruction::FPTrunc: return getFPTrunc(C, Ty); |
| 1313 | case Instruction::FPExt: return getFPExtend(C, Ty); |
| 1314 | case Instruction::UIToFP: return getUIToFP(C, Ty); |
| 1315 | case Instruction::SIToFP: return getSIToFP(C, Ty); |
| 1316 | case Instruction::FPToUI: return getFPToUI(C, Ty); |
| 1317 | case Instruction::FPToSI: return getFPToSI(C, Ty); |
| 1318 | case Instruction::PtrToInt: return getPtrToInt(C, Ty); |
| 1319 | case Instruction::IntToPtr: return getIntToPtr(C, Ty); |
| 1320 | case Instruction::BitCast: return getBitCast(C, Ty); |
Chris Lattner | f5ac6c2 | 2005-01-01 15:59:57 +0000 | [diff] [blame] | 1321 | } |
Reid Spencer | 7858b33 | 2006-12-05 19:14:13 +0000 | [diff] [blame] | 1322 | } |
| 1323 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1324 | Constant *ConstantExpr::getZExtOrBitCast(Constant *C, Type *Ty) { |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1325 | if (C->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits()) |
Dan Gohman | 3b49063 | 2010-04-12 22:12:29 +0000 | [diff] [blame] | 1326 | return getBitCast(C, Ty); |
| 1327 | return getZExt(C, Ty); |
Reid Spencer | 848414e | 2006-12-04 20:17:56 +0000 | [diff] [blame] | 1328 | } |
| 1329 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1330 | Constant *ConstantExpr::getSExtOrBitCast(Constant *C, Type *Ty) { |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1331 | if (C->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits()) |
Dan Gohman | 3b49063 | 2010-04-12 22:12:29 +0000 | [diff] [blame] | 1332 | return getBitCast(C, Ty); |
| 1333 | return getSExt(C, Ty); |
Reid Spencer | 848414e | 2006-12-04 20:17:56 +0000 | [diff] [blame] | 1334 | } |
| 1335 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1336 | Constant *ConstantExpr::getTruncOrBitCast(Constant *C, Type *Ty) { |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1337 | if (C->getType()->getScalarSizeInBits() == Ty->getScalarSizeInBits()) |
Dan Gohman | 3b49063 | 2010-04-12 22:12:29 +0000 | [diff] [blame] | 1338 | return getBitCast(C, Ty); |
| 1339 | return getTrunc(C, Ty); |
Reid Spencer | 848414e | 2006-12-04 20:17:56 +0000 | [diff] [blame] | 1340 | } |
| 1341 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1342 | Constant *ConstantExpr::getPointerCast(Constant *S, Type *Ty) { |
Duncan Sands | 1df9859 | 2010-02-16 11:11:14 +0000 | [diff] [blame] | 1343 | assert(S->getType()->isPointerTy() && "Invalid cast"); |
| 1344 | assert((Ty->isIntegerTy() || Ty->isPointerTy()) && "Invalid cast"); |
Reid Spencer | c0459fb | 2006-12-05 03:25:26 +0000 | [diff] [blame] | 1345 | |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1346 | if (Ty->isIntegerTy()) |
Dan Gohman | 3b49063 | 2010-04-12 22:12:29 +0000 | [diff] [blame] | 1347 | return getPtrToInt(S, Ty); |
| 1348 | return getBitCast(S, Ty); |
Reid Spencer | c0459fb | 2006-12-05 03:25:26 +0000 | [diff] [blame] | 1349 | } |
| 1350 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1351 | Constant *ConstantExpr::getIntegerCast(Constant *C, Type *Ty, |
Reid Spencer | 84f3eab | 2006-12-12 00:51:07 +0000 | [diff] [blame] | 1352 | bool isSigned) { |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1353 | assert(C->getType()->isIntOrIntVectorTy() && |
| 1354 | Ty->isIntOrIntVectorTy() && "Invalid cast"); |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1355 | unsigned SrcBits = C->getType()->getScalarSizeInBits(); |
| 1356 | unsigned DstBits = Ty->getScalarSizeInBits(); |
Reid Spencer | 84f3eab | 2006-12-12 00:51:07 +0000 | [diff] [blame] | 1357 | Instruction::CastOps opcode = |
| 1358 | (SrcBits == DstBits ? Instruction::BitCast : |
| 1359 | (SrcBits > DstBits ? Instruction::Trunc : |
| 1360 | (isSigned ? Instruction::SExt : Instruction::ZExt))); |
| 1361 | return getCast(opcode, C, Ty); |
| 1362 | } |
| 1363 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1364 | Constant *ConstantExpr::getFPCast(Constant *C, Type *Ty) { |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1365 | assert(C->getType()->isFPOrFPVectorTy() && Ty->isFPOrFPVectorTy() && |
Reid Spencer | 84f3eab | 2006-12-12 00:51:07 +0000 | [diff] [blame] | 1366 | "Invalid cast"); |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1367 | unsigned SrcBits = C->getType()->getScalarSizeInBits(); |
| 1368 | unsigned DstBits = Ty->getScalarSizeInBits(); |
Reid Spencer | f25212a | 2006-12-12 05:38:50 +0000 | [diff] [blame] | 1369 | if (SrcBits == DstBits) |
| 1370 | return C; // Avoid a useless cast |
Reid Spencer | 84f3eab | 2006-12-12 00:51:07 +0000 | [diff] [blame] | 1371 | Instruction::CastOps opcode = |
Jay Foad | 9afc527 | 2011-01-27 14:44:55 +0000 | [diff] [blame] | 1372 | (SrcBits > DstBits ? Instruction::FPTrunc : Instruction::FPExt); |
Reid Spencer | 84f3eab | 2006-12-12 00:51:07 +0000 | [diff] [blame] | 1373 | return getCast(opcode, C, Ty); |
| 1374 | } |
| 1375 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1376 | Constant *ConstantExpr::getTrunc(Constant *C, Type *Ty) { |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1377 | #ifndef NDEBUG |
| 1378 | bool fromVec = C->getType()->getTypeID() == Type::VectorTyID; |
| 1379 | bool toVec = Ty->getTypeID() == Type::VectorTyID; |
| 1380 | #endif |
| 1381 | assert((fromVec == toVec) && "Cannot convert from scalar to/from vector"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1382 | assert(C->getType()->isIntOrIntVectorTy() && "Trunc operand must be integer"); |
| 1383 | assert(Ty->isIntOrIntVectorTy() && "Trunc produces only integral"); |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1384 | assert(C->getType()->getScalarSizeInBits() > Ty->getScalarSizeInBits()&& |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1385 | "SrcTy must be larger than DestTy for Trunc!"); |
| 1386 | |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1387 | return getFoldedCast(Instruction::Trunc, C, Ty); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1388 | } |
| 1389 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1390 | Constant *ConstantExpr::getSExt(Constant *C, Type *Ty) { |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1391 | #ifndef NDEBUG |
| 1392 | bool fromVec = C->getType()->getTypeID() == Type::VectorTyID; |
| 1393 | bool toVec = Ty->getTypeID() == Type::VectorTyID; |
| 1394 | #endif |
| 1395 | assert((fromVec == toVec) && "Cannot convert from scalar to/from vector"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1396 | assert(C->getType()->isIntOrIntVectorTy() && "SExt operand must be integral"); |
| 1397 | assert(Ty->isIntOrIntVectorTy() && "SExt produces only integer"); |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1398 | assert(C->getType()->getScalarSizeInBits() < Ty->getScalarSizeInBits()&& |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1399 | "SrcTy must be smaller than DestTy for SExt!"); |
| 1400 | |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1401 | return getFoldedCast(Instruction::SExt, C, Ty); |
Chris Lattner | d144f42 | 2004-04-04 23:20:30 +0000 | [diff] [blame] | 1402 | } |
| 1403 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1404 | Constant *ConstantExpr::getZExt(Constant *C, Type *Ty) { |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1405 | #ifndef NDEBUG |
| 1406 | bool fromVec = C->getType()->getTypeID() == Type::VectorTyID; |
| 1407 | bool toVec = Ty->getTypeID() == Type::VectorTyID; |
| 1408 | #endif |
| 1409 | assert((fromVec == toVec) && "Cannot convert from scalar to/from vector"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1410 | assert(C->getType()->isIntOrIntVectorTy() && "ZEXt operand must be integral"); |
| 1411 | assert(Ty->isIntOrIntVectorTy() && "ZExt produces only integer"); |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1412 | assert(C->getType()->getScalarSizeInBits() < Ty->getScalarSizeInBits()&& |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1413 | "SrcTy must be smaller than DestTy for ZExt!"); |
| 1414 | |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1415 | return getFoldedCast(Instruction::ZExt, C, Ty); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1416 | } |
| 1417 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1418 | Constant *ConstantExpr::getFPTrunc(Constant *C, Type *Ty) { |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1419 | #ifndef NDEBUG |
| 1420 | bool fromVec = C->getType()->getTypeID() == Type::VectorTyID; |
| 1421 | bool toVec = Ty->getTypeID() == Type::VectorTyID; |
| 1422 | #endif |
| 1423 | assert((fromVec == toVec) && "Cannot convert from scalar to/from vector"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1424 | assert(C->getType()->isFPOrFPVectorTy() && Ty->isFPOrFPVectorTy() && |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1425 | C->getType()->getScalarSizeInBits() > Ty->getScalarSizeInBits()&& |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1426 | "This is an illegal floating point truncation!"); |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1427 | return getFoldedCast(Instruction::FPTrunc, C, Ty); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1428 | } |
| 1429 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1430 | Constant *ConstantExpr::getFPExtend(Constant *C, Type *Ty) { |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1431 | #ifndef NDEBUG |
| 1432 | bool fromVec = C->getType()->getTypeID() == Type::VectorTyID; |
| 1433 | bool toVec = Ty->getTypeID() == Type::VectorTyID; |
| 1434 | #endif |
| 1435 | assert((fromVec == toVec) && "Cannot convert from scalar to/from vector"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1436 | assert(C->getType()->isFPOrFPVectorTy() && Ty->isFPOrFPVectorTy() && |
Dan Gohman | 6de29f8 | 2009-06-15 22:12:54 +0000 | [diff] [blame] | 1437 | C->getType()->getScalarSizeInBits() < Ty->getScalarSizeInBits()&& |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1438 | "This is an illegal floating point extension!"); |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1439 | return getFoldedCast(Instruction::FPExt, C, Ty); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1440 | } |
| 1441 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1442 | Constant *ConstantExpr::getUIToFP(Constant *C, Type *Ty) { |
Devang Patel | b6dc935 | 2008-11-03 23:20:04 +0000 | [diff] [blame] | 1443 | #ifndef NDEBUG |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1444 | bool fromVec = C->getType()->getTypeID() == Type::VectorTyID; |
| 1445 | bool toVec = Ty->getTypeID() == Type::VectorTyID; |
Devang Patel | b6dc935 | 2008-11-03 23:20:04 +0000 | [diff] [blame] | 1446 | #endif |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1447 | assert((fromVec == toVec) && "Cannot convert from scalar to/from vector"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1448 | assert(C->getType()->isIntOrIntVectorTy() && Ty->isFPOrFPVectorTy() && |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1449 | "This is an illegal uint to floating point cast!"); |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1450 | return getFoldedCast(Instruction::UIToFP, C, Ty); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1451 | } |
| 1452 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1453 | Constant *ConstantExpr::getSIToFP(Constant *C, Type *Ty) { |
Devang Patel | b6dc935 | 2008-11-03 23:20:04 +0000 | [diff] [blame] | 1454 | #ifndef NDEBUG |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1455 | bool fromVec = C->getType()->getTypeID() == Type::VectorTyID; |
| 1456 | bool toVec = Ty->getTypeID() == Type::VectorTyID; |
Devang Patel | b6dc935 | 2008-11-03 23:20:04 +0000 | [diff] [blame] | 1457 | #endif |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1458 | assert((fromVec == toVec) && "Cannot convert from scalar to/from vector"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1459 | assert(C->getType()->isIntOrIntVectorTy() && Ty->isFPOrFPVectorTy() && |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1460 | "This is an illegal sint to floating point cast!"); |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1461 | return getFoldedCast(Instruction::SIToFP, C, Ty); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1462 | } |
| 1463 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1464 | Constant *ConstantExpr::getFPToUI(Constant *C, Type *Ty) { |
Devang Patel | b6dc935 | 2008-11-03 23:20:04 +0000 | [diff] [blame] | 1465 | #ifndef NDEBUG |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1466 | bool fromVec = C->getType()->getTypeID() == Type::VectorTyID; |
| 1467 | bool toVec = Ty->getTypeID() == Type::VectorTyID; |
Devang Patel | b6dc935 | 2008-11-03 23:20:04 +0000 | [diff] [blame] | 1468 | #endif |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1469 | assert((fromVec == toVec) && "Cannot convert from scalar to/from vector"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1470 | assert(C->getType()->isFPOrFPVectorTy() && Ty->isIntOrIntVectorTy() && |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1471 | "This is an illegal floating point to uint cast!"); |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1472 | return getFoldedCast(Instruction::FPToUI, C, Ty); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1473 | } |
| 1474 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1475 | Constant *ConstantExpr::getFPToSI(Constant *C, Type *Ty) { |
Devang Patel | b6dc935 | 2008-11-03 23:20:04 +0000 | [diff] [blame] | 1476 | #ifndef NDEBUG |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1477 | bool fromVec = C->getType()->getTypeID() == Type::VectorTyID; |
| 1478 | bool toVec = Ty->getTypeID() == Type::VectorTyID; |
Devang Patel | b6dc935 | 2008-11-03 23:20:04 +0000 | [diff] [blame] | 1479 | #endif |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1480 | assert((fromVec == toVec) && "Cannot convert from scalar to/from vector"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1481 | assert(C->getType()->isFPOrFPVectorTy() && Ty->isIntOrIntVectorTy() && |
Nate Begeman | b348d18 | 2007-11-17 03:58:34 +0000 | [diff] [blame] | 1482 | "This is an illegal floating point to sint cast!"); |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1483 | return getFoldedCast(Instruction::FPToSI, C, Ty); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1484 | } |
| 1485 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1486 | Constant *ConstantExpr::getPtrToInt(Constant *C, Type *DstTy) { |
Nadav Rotem | 1608769 | 2011-12-05 06:29:09 +0000 | [diff] [blame] | 1487 | assert(C->getType()->getScalarType()->isPointerTy() && |
| 1488 | "PtrToInt source must be pointer or pointer vector"); |
| 1489 | assert(DstTy->getScalarType()->isIntegerTy() && |
| 1490 | "PtrToInt destination must be integer or integer vector"); |
| 1491 | assert(C->getType()->getNumElements() == DstTy->getNumElements() && |
| 1492 | "Invalid cast between a different number of vector elements"); |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1493 | return getFoldedCast(Instruction::PtrToInt, C, DstTy); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1494 | } |
| 1495 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1496 | Constant *ConstantExpr::getIntToPtr(Constant *C, Type *DstTy) { |
Nadav Rotem | 1608769 | 2011-12-05 06:29:09 +0000 | [diff] [blame] | 1497 | assert(C->getType()->getScalarType()->isIntegerTy() && |
| 1498 | "IntToPtr source must be integer or integer vector"); |
| 1499 | assert(DstTy->getScalarType()->isPointerTy() && |
| 1500 | "IntToPtr destination must be a pointer or pointer vector"); |
| 1501 | assert(C->getType()->getNumElements() == DstTy->getNumElements() && |
| 1502 | "Invalid cast between a different number of vector elements"); |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1503 | return getFoldedCast(Instruction::IntToPtr, C, DstTy); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 1504 | } |
| 1505 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1506 | Constant *ConstantExpr::getBitCast(Constant *C, Type *DstTy) { |
Chris Lattner | 0b68a00 | 2010-01-26 21:51:43 +0000 | [diff] [blame] | 1507 | assert(CastInst::castIsValid(Instruction::BitCast, C, DstTy) && |
| 1508 | "Invalid constantexpr bitcast!"); |
Chris Lattner | 8c7f24a | 2009-03-21 06:55:54 +0000 | [diff] [blame] | 1509 | |
| 1510 | // It is common to ask for a bitcast of a value to its own type, handle this |
| 1511 | // speedily. |
| 1512 | if (C->getType() == DstTy) return C; |
| 1513 | |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1514 | return getFoldedCast(Instruction::BitCast, C, DstTy); |
Chris Lattner | d144f42 | 2004-04-04 23:20:30 +0000 | [diff] [blame] | 1515 | } |
| 1516 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1517 | Constant *ConstantExpr::get(unsigned Opcode, Constant *C1, Constant *C2, |
| 1518 | unsigned Flags) { |
| 1519 | // Check the operands for consistency first. |
Reid Spencer | 0a783f7 | 2006-11-02 01:53:59 +0000 | [diff] [blame] | 1520 | assert(Opcode >= Instruction::BinaryOpsBegin && |
| 1521 | Opcode < Instruction::BinaryOpsEnd && |
Chris Lattner | f31f583 | 2003-05-21 17:49:25 +0000 | [diff] [blame] | 1522 | "Invalid opcode in binary constant expression"); |
| 1523 | assert(C1->getType() == C2->getType() && |
| 1524 | "Operand types in binary constant expression should match"); |
Owen Anderson | 31c36f0 | 2009-06-17 20:10:08 +0000 | [diff] [blame] | 1525 | |
Chris Lattner | 91b362b | 2004-08-17 17:28:46 +0000 | [diff] [blame] | 1526 | #ifndef NDEBUG |
| 1527 | switch (Opcode) { |
Dan Gohman | ae3a0be | 2009-06-04 22:49:04 +0000 | [diff] [blame] | 1528 | case Instruction::Add: |
Reid Spencer | 0a783f7 | 2006-11-02 01:53:59 +0000 | [diff] [blame] | 1529 | case Instruction::Sub: |
Dan Gohman | ae3a0be | 2009-06-04 22:49:04 +0000 | [diff] [blame] | 1530 | case Instruction::Mul: |
Chris Lattner | 91b362b | 2004-08-17 17:28:46 +0000 | [diff] [blame] | 1531 | assert(C1->getType() == C2->getType() && "Op types should be identical!"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1532 | assert(C1->getType()->isIntOrIntVectorTy() && |
Dan Gohman | ae3a0be | 2009-06-04 22:49:04 +0000 | [diff] [blame] | 1533 | "Tried to create an integer operation on a non-integer type!"); |
| 1534 | break; |
| 1535 | case Instruction::FAdd: |
| 1536 | case Instruction::FSub: |
| 1537 | case Instruction::FMul: |
| 1538 | assert(C1->getType() == C2->getType() && "Op types should be identical!"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1539 | assert(C1->getType()->isFPOrFPVectorTy() && |
Dan Gohman | ae3a0be | 2009-06-04 22:49:04 +0000 | [diff] [blame] | 1540 | "Tried to create a floating-point operation on a " |
| 1541 | "non-floating-point type!"); |
Chris Lattner | 91b362b | 2004-08-17 17:28:46 +0000 | [diff] [blame] | 1542 | break; |
Reid Spencer | 1628cec | 2006-10-26 06:15:43 +0000 | [diff] [blame] | 1543 | case Instruction::UDiv: |
| 1544 | case Instruction::SDiv: |
| 1545 | assert(C1->getType() == C2->getType() && "Op types should be identical!"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1546 | assert(C1->getType()->isIntOrIntVectorTy() && |
Reid Spencer | 1628cec | 2006-10-26 06:15:43 +0000 | [diff] [blame] | 1547 | "Tried to create an arithmetic operation on a non-arithmetic type!"); |
| 1548 | break; |
| 1549 | case Instruction::FDiv: |
| 1550 | assert(C1->getType() == C2->getType() && "Op types should be identical!"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1551 | assert(C1->getType()->isFPOrFPVectorTy() && |
Dan Gohman | f57478f | 2009-06-15 22:25:12 +0000 | [diff] [blame] | 1552 | "Tried to create an arithmetic operation on a non-arithmetic type!"); |
Reid Spencer | 1628cec | 2006-10-26 06:15:43 +0000 | [diff] [blame] | 1553 | break; |
Reid Spencer | 0a783f7 | 2006-11-02 01:53:59 +0000 | [diff] [blame] | 1554 | case Instruction::URem: |
| 1555 | case Instruction::SRem: |
| 1556 | assert(C1->getType() == C2->getType() && "Op types should be identical!"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1557 | assert(C1->getType()->isIntOrIntVectorTy() && |
Reid Spencer | 0a783f7 | 2006-11-02 01:53:59 +0000 | [diff] [blame] | 1558 | "Tried to create an arithmetic operation on a non-arithmetic type!"); |
| 1559 | break; |
| 1560 | case Instruction::FRem: |
| 1561 | assert(C1->getType() == C2->getType() && "Op types should be identical!"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1562 | assert(C1->getType()->isFPOrFPVectorTy() && |
Dan Gohman | f57478f | 2009-06-15 22:25:12 +0000 | [diff] [blame] | 1563 | "Tried to create an arithmetic operation on a non-arithmetic type!"); |
Reid Spencer | 0a783f7 | 2006-11-02 01:53:59 +0000 | [diff] [blame] | 1564 | break; |
Chris Lattner | 91b362b | 2004-08-17 17:28:46 +0000 | [diff] [blame] | 1565 | case Instruction::And: |
| 1566 | case Instruction::Or: |
| 1567 | case Instruction::Xor: |
| 1568 | assert(C1->getType() == C2->getType() && "Op types should be identical!"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1569 | assert(C1->getType()->isIntOrIntVectorTy() && |
Misha Brukman | 1bae291 | 2005-01-27 06:46:38 +0000 | [diff] [blame] | 1570 | "Tried to create a logical operation on a non-integral type!"); |
Chris Lattner | 91b362b | 2004-08-17 17:28:46 +0000 | [diff] [blame] | 1571 | break; |
Chris Lattner | 91b362b | 2004-08-17 17:28:46 +0000 | [diff] [blame] | 1572 | case Instruction::Shl: |
Reid Spencer | 3822ff5 | 2006-11-08 06:47:33 +0000 | [diff] [blame] | 1573 | case Instruction::LShr: |
| 1574 | case Instruction::AShr: |
Reid Spencer | 832254e | 2007-02-02 02:16:23 +0000 | [diff] [blame] | 1575 | assert(C1->getType() == C2->getType() && "Op types should be identical!"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1576 | assert(C1->getType()->isIntOrIntVectorTy() && |
Chris Lattner | 91b362b | 2004-08-17 17:28:46 +0000 | [diff] [blame] | 1577 | "Tried to create a shift operation on a non-integer type!"); |
| 1578 | break; |
| 1579 | default: |
| 1580 | break; |
| 1581 | } |
| 1582 | #endif |
| 1583 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1584 | if (Constant *FC = ConstantFoldBinaryInstruction(Opcode, C1, C2)) |
| 1585 | return FC; // Fold a few common cases. |
| 1586 | |
| 1587 | std::vector<Constant*> argVec(1, C1); |
| 1588 | argVec.push_back(C2); |
| 1589 | ExprMapKeyType Key(Opcode, argVec, 0, Flags); |
| 1590 | |
| 1591 | LLVMContextImpl *pImpl = C1->getContext().pImpl; |
| 1592 | return pImpl->ExprConstants.getOrCreate(C1->getType(), Key); |
Reid Spencer | 67263fe | 2006-12-04 21:35:24 +0000 | [diff] [blame] | 1593 | } |
| 1594 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1595 | Constant *ConstantExpr::getSizeOf(Type* Ty) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1596 | // sizeof is implemented as: (i64) gep (Ty*)null, 1 |
| 1597 | // Note that a non-inbounds gep is used, as null isn't within any object. |
Owen Anderson | 1d0be15 | 2009-08-13 21:58:54 +0000 | [diff] [blame] | 1598 | Constant *GEPIdx = ConstantInt::get(Type::getInt32Ty(Ty->getContext()), 1); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1599 | Constant *GEP = getGetElementPtr( |
Jay Foad | dab3d29 | 2011-07-21 14:31:17 +0000 | [diff] [blame] | 1600 | Constant::getNullValue(PointerType::getUnqual(Ty)), GEPIdx); |
Dan Gohman | 3b49063 | 2010-04-12 22:12:29 +0000 | [diff] [blame] | 1601 | return getPtrToInt(GEP, |
| 1602 | Type::getInt64Ty(Ty->getContext())); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1603 | } |
| 1604 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1605 | Constant *ConstantExpr::getAlignOf(Type* Ty) { |
Dan Gohman | 0f5efe5 | 2010-01-28 02:15:55 +0000 | [diff] [blame] | 1606 | // alignof is implemented as: (i64) gep ({i1,Ty}*)null, 0, 1 |
Dan Gohman | e2574d3 | 2009-08-11 17:57:01 +0000 | [diff] [blame] | 1607 | // Note that a non-inbounds gep is used, as null isn't within any object. |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1608 | Type *AligningTy = |
Chris Lattner | b231866 | 2011-06-18 22:48:56 +0000 | [diff] [blame] | 1609 | StructType::get(Type::getInt1Ty(Ty->getContext()), Ty, NULL); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 1610 | Constant *NullPtr = Constant::getNullValue(AligningTy->getPointerTo()); |
Dan Gohman | 06ed3e7 | 2010-01-28 02:43:22 +0000 | [diff] [blame] | 1611 | Constant *Zero = ConstantInt::get(Type::getInt64Ty(Ty->getContext()), 0); |
Owen Anderson | 1d0be15 | 2009-08-13 21:58:54 +0000 | [diff] [blame] | 1612 | Constant *One = ConstantInt::get(Type::getInt32Ty(Ty->getContext()), 1); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1613 | Constant *Indices[2] = { Zero, One }; |
Jay Foad | dab3d29 | 2011-07-21 14:31:17 +0000 | [diff] [blame] | 1614 | Constant *GEP = getGetElementPtr(NullPtr, Indices); |
Dan Gohman | 3b49063 | 2010-04-12 22:12:29 +0000 | [diff] [blame] | 1615 | return getPtrToInt(GEP, |
| 1616 | Type::getInt64Ty(Ty->getContext())); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1617 | } |
| 1618 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1619 | Constant *ConstantExpr::getOffsetOf(StructType* STy, unsigned FieldNo) { |
Dan Gohman | 2544a1d | 2010-02-01 16:37:38 +0000 | [diff] [blame] | 1620 | return getOffsetOf(STy, ConstantInt::get(Type::getInt32Ty(STy->getContext()), |
| 1621 | FieldNo)); |
| 1622 | } |
| 1623 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1624 | Constant *ConstantExpr::getOffsetOf(Type* Ty, Constant *FieldNo) { |
Dan Gohman | 3778f21 | 2009-08-16 21:26:11 +0000 | [diff] [blame] | 1625 | // offsetof is implemented as: (i64) gep (Ty*)null, 0, FieldNo |
| 1626 | // Note that a non-inbounds gep is used, as null isn't within any object. |
| 1627 | Constant *GEPIdx[] = { |
Dan Gohman | 2544a1d | 2010-02-01 16:37:38 +0000 | [diff] [blame] | 1628 | ConstantInt::get(Type::getInt64Ty(Ty->getContext()), 0), |
| 1629 | FieldNo |
Dan Gohman | 3778f21 | 2009-08-16 21:26:11 +0000 | [diff] [blame] | 1630 | }; |
| 1631 | Constant *GEP = getGetElementPtr( |
Jay Foad | dab3d29 | 2011-07-21 14:31:17 +0000 | [diff] [blame] | 1632 | Constant::getNullValue(PointerType::getUnqual(Ty)), GEPIdx); |
Dan Gohman | 3b49063 | 2010-04-12 22:12:29 +0000 | [diff] [blame] | 1633 | return getPtrToInt(GEP, |
| 1634 | Type::getInt64Ty(Ty->getContext())); |
Dan Gohman | 3778f21 | 2009-08-16 21:26:11 +0000 | [diff] [blame] | 1635 | } |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1636 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1637 | Constant *ConstantExpr::getCompare(unsigned short Predicate, |
| 1638 | Constant *C1, Constant *C2) { |
Reid Spencer | 67263fe | 2006-12-04 21:35:24 +0000 | [diff] [blame] | 1639 | assert(C1->getType() == C2->getType() && "Op types should be identical!"); |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1640 | |
| 1641 | switch (Predicate) { |
| 1642 | default: llvm_unreachable("Invalid CmpInst predicate"); |
| 1643 | case CmpInst::FCMP_FALSE: case CmpInst::FCMP_OEQ: case CmpInst::FCMP_OGT: |
| 1644 | case CmpInst::FCMP_OGE: case CmpInst::FCMP_OLT: case CmpInst::FCMP_OLE: |
| 1645 | case CmpInst::FCMP_ONE: case CmpInst::FCMP_ORD: case CmpInst::FCMP_UNO: |
| 1646 | case CmpInst::FCMP_UEQ: case CmpInst::FCMP_UGT: case CmpInst::FCMP_UGE: |
| 1647 | case CmpInst::FCMP_ULT: case CmpInst::FCMP_ULE: case CmpInst::FCMP_UNE: |
| 1648 | case CmpInst::FCMP_TRUE: |
| 1649 | return getFCmp(Predicate, C1, C2); |
| 1650 | |
| 1651 | case CmpInst::ICMP_EQ: case CmpInst::ICMP_NE: case CmpInst::ICMP_UGT: |
| 1652 | case CmpInst::ICMP_UGE: case CmpInst::ICMP_ULT: case CmpInst::ICMP_ULE: |
| 1653 | case CmpInst::ICMP_SGT: case CmpInst::ICMP_SGE: case CmpInst::ICMP_SLT: |
| 1654 | case CmpInst::ICMP_SLE: |
| 1655 | return getICmp(Predicate, C1, C2); |
| 1656 | } |
Chris Lattner | c3d12f0 | 2004-08-04 18:50:09 +0000 | [diff] [blame] | 1657 | } |
| 1658 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1659 | Constant *ConstantExpr::getSelect(Constant *C, Constant *V1, Constant *V2) { |
Chris Lattner | 9ace0cd | 2008-12-29 00:16:12 +0000 | [diff] [blame] | 1660 | assert(!SelectInst::areInvalidOperands(C, V1, V2)&&"Invalid select operands"); |
Chris Lattner | 08a45cc | 2004-03-12 05:54:04 +0000 | [diff] [blame] | 1661 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1662 | if (Constant *SC = ConstantFoldSelectInstruction(C, V1, V2)) |
| 1663 | return SC; // Fold common cases |
Chris Lattner | 08a45cc | 2004-03-12 05:54:04 +0000 | [diff] [blame] | 1664 | |
| 1665 | std::vector<Constant*> argVec(3, C); |
| 1666 | argVec[1] = V1; |
| 1667 | argVec[2] = V2; |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1668 | ExprMapKeyType Key(Instruction::Select, argVec); |
Owen Anderson | 31c36f0 | 2009-06-17 20:10:08 +0000 | [diff] [blame] | 1669 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1670 | LLVMContextImpl *pImpl = C->getContext().pImpl; |
| 1671 | return pImpl->ExprConstants.getOrCreate(V1->getType(), Key); |
Chris Lattner | 08a45cc | 2004-03-12 05:54:04 +0000 | [diff] [blame] | 1672 | } |
| 1673 | |
Jay Foad | dab3d29 | 2011-07-21 14:31:17 +0000 | [diff] [blame] | 1674 | Constant *ConstantExpr::getGetElementPtr(Constant *C, ArrayRef<Value *> Idxs, |
| 1675 | bool InBounds) { |
| 1676 | if (Constant *FC = ConstantFoldGetElementPtr(C, InBounds, Idxs)) |
Chris Lattner | 1f78d51 | 2011-02-11 05:34:33 +0000 | [diff] [blame] | 1677 | return FC; // Fold a few common cases. |
Dan Gohman | f8dbee7 | 2009-09-07 23:54:19 +0000 | [diff] [blame] | 1678 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1679 | // Get the result type of the getelementptr! |
Jay Foad | a920310 | 2011-07-25 09:48:08 +0000 | [diff] [blame] | 1680 | Type *Ty = GetElementPtrInst::getIndexedType(C->getType(), Idxs); |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1681 | assert(Ty && "GEP indices invalid!"); |
| 1682 | unsigned AS = cast<PointerType>(C->getType())->getAddressSpace(); |
| 1683 | Type *ReqTy = Ty->getPointerTo(AS); |
| 1684 | |
Duncan Sands | 1df9859 | 2010-02-16 11:11:14 +0000 | [diff] [blame] | 1685 | assert(C->getType()->isPointerTy() && |
Dan Gohman | f8dbee7 | 2009-09-07 23:54:19 +0000 | [diff] [blame] | 1686 | "Non-pointer type for constant GetElementPtr expression"); |
| 1687 | // Look up the constant in the table first to ensure uniqueness |
| 1688 | std::vector<Constant*> ArgVec; |
Jay Foad | dab3d29 | 2011-07-21 14:31:17 +0000 | [diff] [blame] | 1689 | ArgVec.reserve(1 + Idxs.size()); |
Dan Gohman | f8dbee7 | 2009-09-07 23:54:19 +0000 | [diff] [blame] | 1690 | ArgVec.push_back(C); |
Jay Foad | dab3d29 | 2011-07-21 14:31:17 +0000 | [diff] [blame] | 1691 | for (unsigned i = 0, e = Idxs.size(); i != e; ++i) |
Dan Gohman | f8dbee7 | 2009-09-07 23:54:19 +0000 | [diff] [blame] | 1692 | ArgVec.push_back(cast<Constant>(Idxs[i])); |
| 1693 | const ExprMapKeyType Key(Instruction::GetElementPtr, ArgVec, 0, |
Chris Lattner | 1f78d51 | 2011-02-11 05:34:33 +0000 | [diff] [blame] | 1694 | InBounds ? GEPOperator::IsInBounds : 0); |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1695 | |
| 1696 | LLVMContextImpl *pImpl = C->getContext().pImpl; |
Dan Gohman | f8dbee7 | 2009-09-07 23:54:19 +0000 | [diff] [blame] | 1697 | return pImpl->ExprConstants.getOrCreate(ReqTy, Key); |
| 1698 | } |
| 1699 | |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1700 | Constant * |
Nick Lewycky | 401f325 | 2010-01-21 07:03:21 +0000 | [diff] [blame] | 1701 | ConstantExpr::getICmp(unsigned short pred, Constant *LHS, Constant *RHS) { |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1702 | assert(LHS->getType() == RHS->getType()); |
| 1703 | assert(pred >= ICmpInst::FIRST_ICMP_PREDICATE && |
| 1704 | pred <= ICmpInst::LAST_ICMP_PREDICATE && "Invalid ICmp Predicate"); |
| 1705 | |
Chris Lattner | b29d596 | 2010-02-01 20:48:08 +0000 | [diff] [blame] | 1706 | if (Constant *FC = ConstantFoldCompareInstruction(pred, LHS, RHS)) |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1707 | return FC; // Fold a few common cases... |
| 1708 | |
| 1709 | // Look up the constant in the table first to ensure uniqueness |
| 1710 | std::vector<Constant*> ArgVec; |
| 1711 | ArgVec.push_back(LHS); |
| 1712 | ArgVec.push_back(RHS); |
Reid Spencer | 4fa021a | 2006-12-24 18:42:29 +0000 | [diff] [blame] | 1713 | // Get the key type with both the opcode and predicate |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1714 | const ExprMapKeyType Key(Instruction::ICmp, ArgVec, pred); |
Owen Anderson | 31c36f0 | 2009-06-17 20:10:08 +0000 | [diff] [blame] | 1715 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1716 | Type *ResultTy = Type::getInt1Ty(LHS->getContext()); |
| 1717 | if (VectorType *VT = dyn_cast<VectorType>(LHS->getType())) |
Nick Lewycky | 401f325 | 2010-01-21 07:03:21 +0000 | [diff] [blame] | 1718 | ResultTy = VectorType::get(ResultTy, VT->getNumElements()); |
| 1719 | |
Owen Anderson | d03eecd | 2009-08-04 20:25:11 +0000 | [diff] [blame] | 1720 | LLVMContextImpl *pImpl = LHS->getType()->getContext().pImpl; |
Nick Lewycky | 401f325 | 2010-01-21 07:03:21 +0000 | [diff] [blame] | 1721 | return pImpl->ExprConstants.getOrCreate(ResultTy, Key); |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1722 | } |
| 1723 | |
| 1724 | Constant * |
Nick Lewycky | 401f325 | 2010-01-21 07:03:21 +0000 | [diff] [blame] | 1725 | ConstantExpr::getFCmp(unsigned short pred, Constant *LHS, Constant *RHS) { |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1726 | assert(LHS->getType() == RHS->getType()); |
| 1727 | assert(pred <= FCmpInst::LAST_FCMP_PREDICATE && "Invalid FCmp Predicate"); |
| 1728 | |
Chris Lattner | b29d596 | 2010-02-01 20:48:08 +0000 | [diff] [blame] | 1729 | if (Constant *FC = ConstantFoldCompareInstruction(pred, LHS, RHS)) |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1730 | return FC; // Fold a few common cases... |
| 1731 | |
| 1732 | // Look up the constant in the table first to ensure uniqueness |
| 1733 | std::vector<Constant*> ArgVec; |
| 1734 | ArgVec.push_back(LHS); |
| 1735 | ArgVec.push_back(RHS); |
Reid Spencer | 4fa021a | 2006-12-24 18:42:29 +0000 | [diff] [blame] | 1736 | // Get the key type with both the opcode and predicate |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1737 | const ExprMapKeyType Key(Instruction::FCmp, ArgVec, pred); |
Nick Lewycky | 401f325 | 2010-01-21 07:03:21 +0000 | [diff] [blame] | 1738 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1739 | Type *ResultTy = Type::getInt1Ty(LHS->getContext()); |
| 1740 | if (VectorType *VT = dyn_cast<VectorType>(LHS->getType())) |
Nick Lewycky | 401f325 | 2010-01-21 07:03:21 +0000 | [diff] [blame] | 1741 | ResultTy = VectorType::get(ResultTy, VT->getNumElements()); |
| 1742 | |
Owen Anderson | d03eecd | 2009-08-04 20:25:11 +0000 | [diff] [blame] | 1743 | LLVMContextImpl *pImpl = LHS->getType()->getContext().pImpl; |
Nick Lewycky | 401f325 | 2010-01-21 07:03:21 +0000 | [diff] [blame] | 1744 | return pImpl->ExprConstants.getOrCreate(ResultTy, Key); |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 1745 | } |
| 1746 | |
Robert Bocchino | b52ee7f | 2006-01-10 19:05:34 +0000 | [diff] [blame] | 1747 | Constant *ConstantExpr::getExtractElement(Constant *Val, Constant *Idx) { |
Duncan Sands | 1df9859 | 2010-02-16 11:11:14 +0000 | [diff] [blame] | 1748 | assert(Val->getType()->isVectorTy() && |
Reid Spencer | ac9dcb9 | 2007-02-15 03:39:18 +0000 | [diff] [blame] | 1749 | "Tried to create extractelement operation on non-vector type!"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1750 | assert(Idx->getType()->isIntegerTy(32) && |
Reid Spencer | 3d10b0b | 2007-01-26 07:37:34 +0000 | [diff] [blame] | 1751 | "Extractelement index must be i32 type!"); |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1752 | |
| 1753 | if (Constant *FC = ConstantFoldExtractElementInstruction(Val, Idx)) |
Chris Lattner | 83738a2 | 2009-12-30 20:25:09 +0000 | [diff] [blame] | 1754 | return FC; // Fold a few common cases. |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1755 | |
Robert Bocchino | c152f9c | 2006-01-17 20:07:22 +0000 | [diff] [blame] | 1756 | // Look up the constant in the table first to ensure uniqueness |
| 1757 | std::vector<Constant*> ArgVec(1, Val); |
Robert Bocchino | c152f9c | 2006-01-17 20:07:22 +0000 | [diff] [blame] | 1758 | ArgVec.push_back(Idx); |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1759 | const ExprMapKeyType Key(Instruction::ExtractElement,ArgVec); |
Owen Anderson | 31c36f0 | 2009-06-17 20:10:08 +0000 | [diff] [blame] | 1760 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1761 | LLVMContextImpl *pImpl = Val->getContext().pImpl; |
| 1762 | Type *ReqTy = cast<VectorType>(Val->getType())->getElementType(); |
Owen Anderson | d03eecd | 2009-08-04 20:25:11 +0000 | [diff] [blame] | 1763 | return pImpl->ExprConstants.getOrCreate(ReqTy, Key); |
Robert Bocchino | c152f9c | 2006-01-17 20:07:22 +0000 | [diff] [blame] | 1764 | } |
| 1765 | |
| 1766 | Constant *ConstantExpr::getInsertElement(Constant *Val, Constant *Elt, |
| 1767 | Constant *Idx) { |
Duncan Sands | 1df9859 | 2010-02-16 11:11:14 +0000 | [diff] [blame] | 1768 | assert(Val->getType()->isVectorTy() && |
Reid Spencer | ac9dcb9 | 2007-02-15 03:39:18 +0000 | [diff] [blame] | 1769 | "Tried to create insertelement operation on non-vector type!"); |
Reid Spencer | 9d6565a | 2007-02-15 02:26:10 +0000 | [diff] [blame] | 1770 | assert(Elt->getType() == cast<VectorType>(Val->getType())->getElementType() |
Robert Bocchino | c152f9c | 2006-01-17 20:07:22 +0000 | [diff] [blame] | 1771 | && "Insertelement types must match!"); |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1772 | assert(Idx->getType()->isIntegerTy(32) && |
Reid Spencer | 3d10b0b | 2007-01-26 07:37:34 +0000 | [diff] [blame] | 1773 | "Insertelement index must be i32 type!"); |
Robert Bocchino | c152f9c | 2006-01-17 20:07:22 +0000 | [diff] [blame] | 1774 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1775 | if (Constant *FC = ConstantFoldInsertElementInstruction(Val, Elt, Idx)) |
| 1776 | return FC; // Fold a few common cases. |
Chris Lattner | 00f1023 | 2006-04-08 01:18:18 +0000 | [diff] [blame] | 1777 | // Look up the constant in the table first to ensure uniqueness |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1778 | std::vector<Constant*> ArgVec(1, Val); |
| 1779 | ArgVec.push_back(Elt); |
| 1780 | ArgVec.push_back(Idx); |
| 1781 | const ExprMapKeyType Key(Instruction::InsertElement,ArgVec); |
Owen Anderson | 31c36f0 | 2009-06-17 20:10:08 +0000 | [diff] [blame] | 1782 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1783 | LLVMContextImpl *pImpl = Val->getContext().pImpl; |
| 1784 | return pImpl->ExprConstants.getOrCreate(Val->getType(), Key); |
Chris Lattner | 00f1023 | 2006-04-08 01:18:18 +0000 | [diff] [blame] | 1785 | } |
| 1786 | |
| 1787 | Constant *ConstantExpr::getShuffleVector(Constant *V1, Constant *V2, |
| 1788 | Constant *Mask) { |
| 1789 | assert(ShuffleVectorInst::isValidOperands(V1, V2, Mask) && |
| 1790 | "Invalid shuffle vector constant expr operands!"); |
Nate Begeman | 0f123cf | 2009-02-12 21:28:33 +0000 | [diff] [blame] | 1791 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1792 | if (Constant *FC = ConstantFoldShuffleVectorInstruction(V1, V2, Mask)) |
| 1793 | return FC; // Fold a few common cases. |
| 1794 | |
Nate Begeman | 0f123cf | 2009-02-12 21:28:33 +0000 | [diff] [blame] | 1795 | unsigned NElts = cast<VectorType>(Mask->getType())->getNumElements(); |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1796 | Type *EltTy = cast<VectorType>(V1->getType())->getElementType(); |
| 1797 | Type *ShufTy = VectorType::get(EltTy, NElts); |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1798 | |
| 1799 | // Look up the constant in the table first to ensure uniqueness |
| 1800 | std::vector<Constant*> ArgVec(1, V1); |
| 1801 | ArgVec.push_back(V2); |
| 1802 | ArgVec.push_back(Mask); |
| 1803 | const ExprMapKeyType Key(Instruction::ShuffleVector,ArgVec); |
| 1804 | |
| 1805 | LLVMContextImpl *pImpl = ShufTy->getContext().pImpl; |
| 1806 | return pImpl->ExprConstants.getOrCreate(ShufTy, Key); |
Chris Lattner | 00f1023 | 2006-04-08 01:18:18 +0000 | [diff] [blame] | 1807 | } |
| 1808 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1809 | Constant *ConstantExpr::getInsertValue(Constant *Agg, Constant *Val, |
Jay Foad | fc6d3a4 | 2011-07-13 10:26:04 +0000 | [diff] [blame] | 1810 | ArrayRef<unsigned> Idxs) { |
| 1811 | assert(ExtractValueInst::getIndexedType(Agg->getType(), |
| 1812 | Idxs) == Val->getType() && |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 1813 | "insertvalue indices invalid!"); |
Dan Gohman | e456994 | 2008-05-23 00:36:11 +0000 | [diff] [blame] | 1814 | assert(Agg->getType()->isFirstClassType() && |
Chris Lattner | 4e47aad | 2011-07-12 05:26:21 +0000 | [diff] [blame] | 1815 | "Non-first-class type for constant insertvalue expression"); |
Jay Foad | fc6d3a4 | 2011-07-13 10:26:04 +0000 | [diff] [blame] | 1816 | Constant *FC = ConstantFoldInsertValueInstruction(Agg, Val, Idxs); |
Chris Lattner | 4e47aad | 2011-07-12 05:26:21 +0000 | [diff] [blame] | 1817 | assert(FC && "insertvalue constant expr couldn't be folded!"); |
Dan Gohman | e089160 | 2008-07-21 23:30:30 +0000 | [diff] [blame] | 1818 | return FC; |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 1819 | } |
| 1820 | |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1821 | Constant *ConstantExpr::getExtractValue(Constant *Agg, |
Jay Foad | fc6d3a4 | 2011-07-13 10:26:04 +0000 | [diff] [blame] | 1822 | ArrayRef<unsigned> Idxs) { |
Dan Gohman | e456994 | 2008-05-23 00:36:11 +0000 | [diff] [blame] | 1823 | assert(Agg->getType()->isFirstClassType() && |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1824 | "Tried to create extractelement operation on non-first-class type!"); |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 1825 | |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1826 | Type *ReqTy = ExtractValueInst::getIndexedType(Agg->getType(), Idxs); |
Chandler Carruth | dc770fc | 2011-07-10 09:45:35 +0000 | [diff] [blame] | 1827 | (void)ReqTy; |
Chris Lattner | eaf7980 | 2011-07-09 18:23:52 +0000 | [diff] [blame] | 1828 | assert(ReqTy && "extractvalue indices invalid!"); |
| 1829 | |
Dan Gohman | e456994 | 2008-05-23 00:36:11 +0000 | [diff] [blame] | 1830 | assert(Agg->getType()->isFirstClassType() && |
| 1831 | "Non-first-class type for constant extractvalue expression"); |
Jay Foad | fc6d3a4 | 2011-07-13 10:26:04 +0000 | [diff] [blame] | 1832 | Constant *FC = ConstantFoldExtractValueInstruction(Agg, Idxs); |
Dan Gohman | e089160 | 2008-07-21 23:30:30 +0000 | [diff] [blame] | 1833 | assert(FC && "ExtractValue constant expr couldn't be folded!"); |
| 1834 | return FC; |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 1835 | } |
| 1836 | |
Chris Lattner | 81baf14 | 2011-02-10 07:01:55 +0000 | [diff] [blame] | 1837 | Constant *ConstantExpr::getNeg(Constant *C, bool HasNUW, bool HasNSW) { |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1838 | assert(C->getType()->isIntOrIntVectorTy() && |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1839 | "Cannot NEG a nonintegral value!"); |
Chris Lattner | 81baf14 | 2011-02-10 07:01:55 +0000 | [diff] [blame] | 1840 | return getSub(ConstantFP::getZeroValueForNegation(C->getType()), |
| 1841 | C, HasNUW, HasNSW); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1842 | } |
| 1843 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1844 | Constant *ConstantExpr::getFNeg(Constant *C) { |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1845 | assert(C->getType()->isFPOrFPVectorTy() && |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1846 | "Cannot FNEG a non-floating-point value!"); |
Chris Lattner | 81baf14 | 2011-02-10 07:01:55 +0000 | [diff] [blame] | 1847 | return getFSub(ConstantFP::getZeroValueForNegation(C->getType()), C); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1848 | } |
| 1849 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1850 | Constant *ConstantExpr::getNot(Constant *C) { |
Duncan Sands | b0bc6c3 | 2010-02-15 16:12:20 +0000 | [diff] [blame] | 1851 | assert(C->getType()->isIntOrIntVectorTy() && |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1852 | "Cannot NOT a nonintegral value!"); |
Owen Anderson | a7235ea | 2009-07-31 20:28:14 +0000 | [diff] [blame] | 1853 | return get(Instruction::Xor, C, Constant::getAllOnesValue(C->getType())); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1854 | } |
| 1855 | |
Chris Lattner | 81baf14 | 2011-02-10 07:01:55 +0000 | [diff] [blame] | 1856 | Constant *ConstantExpr::getAdd(Constant *C1, Constant *C2, |
| 1857 | bool HasNUW, bool HasNSW) { |
| 1858 | unsigned Flags = (HasNUW ? OverflowingBinaryOperator::NoUnsignedWrap : 0) | |
| 1859 | (HasNSW ? OverflowingBinaryOperator::NoSignedWrap : 0); |
| 1860 | return get(Instruction::Add, C1, C2, Flags); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1861 | } |
| 1862 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1863 | Constant *ConstantExpr::getFAdd(Constant *C1, Constant *C2) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1864 | return get(Instruction::FAdd, C1, C2); |
| 1865 | } |
| 1866 | |
Chris Lattner | 81baf14 | 2011-02-10 07:01:55 +0000 | [diff] [blame] | 1867 | Constant *ConstantExpr::getSub(Constant *C1, Constant *C2, |
| 1868 | bool HasNUW, bool HasNSW) { |
| 1869 | unsigned Flags = (HasNUW ? OverflowingBinaryOperator::NoUnsignedWrap : 0) | |
| 1870 | (HasNSW ? OverflowingBinaryOperator::NoSignedWrap : 0); |
| 1871 | return get(Instruction::Sub, C1, C2, Flags); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1872 | } |
| 1873 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1874 | Constant *ConstantExpr::getFSub(Constant *C1, Constant *C2) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1875 | return get(Instruction::FSub, C1, C2); |
| 1876 | } |
| 1877 | |
Chris Lattner | 81baf14 | 2011-02-10 07:01:55 +0000 | [diff] [blame] | 1878 | Constant *ConstantExpr::getMul(Constant *C1, Constant *C2, |
| 1879 | bool HasNUW, bool HasNSW) { |
| 1880 | unsigned Flags = (HasNUW ? OverflowingBinaryOperator::NoUnsignedWrap : 0) | |
| 1881 | (HasNSW ? OverflowingBinaryOperator::NoSignedWrap : 0); |
| 1882 | return get(Instruction::Mul, C1, C2, Flags); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1883 | } |
| 1884 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1885 | Constant *ConstantExpr::getFMul(Constant *C1, Constant *C2) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1886 | return get(Instruction::FMul, C1, C2); |
| 1887 | } |
| 1888 | |
Chris Lattner | 74f5c5a | 2011-02-09 16:43:07 +0000 | [diff] [blame] | 1889 | Constant *ConstantExpr::getUDiv(Constant *C1, Constant *C2, bool isExact) { |
| 1890 | return get(Instruction::UDiv, C1, C2, |
| 1891 | isExact ? PossiblyExactOperator::IsExact : 0); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1892 | } |
| 1893 | |
Chris Lattner | 74f5c5a | 2011-02-09 16:43:07 +0000 | [diff] [blame] | 1894 | Constant *ConstantExpr::getSDiv(Constant *C1, Constant *C2, bool isExact) { |
| 1895 | return get(Instruction::SDiv, C1, C2, |
| 1896 | isExact ? PossiblyExactOperator::IsExact : 0); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1897 | } |
| 1898 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1899 | Constant *ConstantExpr::getFDiv(Constant *C1, Constant *C2) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1900 | return get(Instruction::FDiv, C1, C2); |
| 1901 | } |
| 1902 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1903 | Constant *ConstantExpr::getURem(Constant *C1, Constant *C2) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1904 | return get(Instruction::URem, C1, C2); |
| 1905 | } |
| 1906 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1907 | Constant *ConstantExpr::getSRem(Constant *C1, Constant *C2) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1908 | return get(Instruction::SRem, C1, C2); |
| 1909 | } |
| 1910 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1911 | Constant *ConstantExpr::getFRem(Constant *C1, Constant *C2) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1912 | return get(Instruction::FRem, C1, C2); |
| 1913 | } |
| 1914 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1915 | Constant *ConstantExpr::getAnd(Constant *C1, Constant *C2) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1916 | return get(Instruction::And, C1, C2); |
| 1917 | } |
| 1918 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1919 | Constant *ConstantExpr::getOr(Constant *C1, Constant *C2) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1920 | return get(Instruction::Or, C1, C2); |
| 1921 | } |
| 1922 | |
Chris Lattner | f067d58 | 2011-02-07 16:40:21 +0000 | [diff] [blame] | 1923 | Constant *ConstantExpr::getXor(Constant *C1, Constant *C2) { |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1924 | return get(Instruction::Xor, C1, C2); |
| 1925 | } |
| 1926 | |
Chris Lattner | 81baf14 | 2011-02-10 07:01:55 +0000 | [diff] [blame] | 1927 | Constant *ConstantExpr::getShl(Constant *C1, Constant *C2, |
| 1928 | bool HasNUW, bool HasNSW) { |
| 1929 | unsigned Flags = (HasNUW ? OverflowingBinaryOperator::NoUnsignedWrap : 0) | |
| 1930 | (HasNSW ? OverflowingBinaryOperator::NoSignedWrap : 0); |
| 1931 | return get(Instruction::Shl, C1, C2, Flags); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1932 | } |
| 1933 | |
Chris Lattner | 74f5c5a | 2011-02-09 16:43:07 +0000 | [diff] [blame] | 1934 | Constant *ConstantExpr::getLShr(Constant *C1, Constant *C2, bool isExact) { |
| 1935 | return get(Instruction::LShr, C1, C2, |
| 1936 | isExact ? PossiblyExactOperator::IsExact : 0); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1937 | } |
| 1938 | |
Chris Lattner | 74f5c5a | 2011-02-09 16:43:07 +0000 | [diff] [blame] | 1939 | Constant *ConstantExpr::getAShr(Constant *C1, Constant *C2, bool isExact) { |
| 1940 | return get(Instruction::AShr, C1, C2, |
| 1941 | isExact ? PossiblyExactOperator::IsExact : 0); |
Owen Anderson | baf3c40 | 2009-07-29 18:55:55 +0000 | [diff] [blame] | 1942 | } |
| 1943 | |
Vikram S. Adve | d0b1bb0 | 2002-07-15 18:19:33 +0000 | [diff] [blame] | 1944 | // destroyConstant - Remove the constant from the constant table... |
| 1945 | // |
Owen Anderson | 04fb7c3 | 2009-06-20 00:24:58 +0000 | [diff] [blame] | 1946 | void ConstantExpr::destroyConstant() { |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 1947 | getType()->getContext().pImpl->ExprConstants.remove(this); |
Vikram S. Adve | d0b1bb0 | 2002-07-15 18:19:33 +0000 | [diff] [blame] | 1948 | destroyConstantImpl(); |
Vikram S. Adve | 345e0cf | 2002-07-14 23:13:17 +0000 | [diff] [blame] | 1949 | } |
| 1950 | |
Chris Lattner | c188eeb | 2002-07-30 18:54:25 +0000 | [diff] [blame] | 1951 | const char *ConstantExpr::getOpcodeName() const { |
| 1952 | return Instruction::getOpcodeName(getOpcode()); |
Vikram S. Adve | 345e0cf | 2002-07-14 23:13:17 +0000 | [diff] [blame] | 1953 | } |
Reid Spencer | 1c9c8e6 | 2004-07-17 23:48:33 +0000 | [diff] [blame] | 1954 | |
Chris Lattner | 04e3b1e | 2010-03-30 20:48:48 +0000 | [diff] [blame] | 1955 | |
| 1956 | |
| 1957 | GetElementPtrConstantExpr:: |
| 1958 | GetElementPtrConstantExpr(Constant *C, const std::vector<Constant*> &IdxList, |
Chris Lattner | db125cf | 2011-07-18 04:54:35 +0000 | [diff] [blame] | 1959 | Type *DestTy) |
Chris Lattner | 04e3b1e | 2010-03-30 20:48:48 +0000 | [diff] [blame] | 1960 | : ConstantExpr(DestTy, Instruction::GetElementPtr, |
| 1961 | OperandTraits<GetElementPtrConstantExpr>::op_end(this) |
| 1962 | - (IdxList.size()+1), IdxList.size()+1) { |
| 1963 | OperandList[0] = C; |
| 1964 | for (unsigned i = 0, E = IdxList.size(); i != E; ++i) |
| 1965 | OperandList[i+1] = IdxList[i]; |
| 1966 | } |
| 1967 | |
Chris Lattner | 27dd9cf | 2012-01-23 22:57:10 +0000 | [diff] [blame] | 1968 | //===----------------------------------------------------------------------===// |
| 1969 | // ConstantData* implementations |
| 1970 | |
| 1971 | void ConstantDataArray::anchor() {} |
| 1972 | void ConstantDataVector::anchor() {} |
| 1973 | |
Chris Lattner | 45bb5c5 | 2012-01-24 04:43:41 +0000 | [diff] [blame] | 1974 | /// getElementType - Return the element type of the array/vector. |
| 1975 | Type *ConstantDataSequential::getElementType() const { |
| 1976 | return getType()->getElementType(); |
| 1977 | } |
| 1978 | |
Chris Lattner | ff2b7f3 | 2012-01-24 05:42:11 +0000 | [diff] [blame^] | 1979 | /// isElementTypeCompatible - Return true if a ConstantDataSequential can be |
| 1980 | /// formed with a vector or array of the specified element type. |
| 1981 | /// ConstantDataArray only works with normal float and int types that are |
| 1982 | /// stored densely in memory, not with things like i42 or x86_f80. |
| 1983 | bool ConstantDataSequential::isElementTypeCompatible(const Type *Ty) { |
Chris Lattner | 45bb5c5 | 2012-01-24 04:43:41 +0000 | [diff] [blame] | 1984 | if (Ty->isFloatTy() || Ty->isDoubleTy()) return true; |
| 1985 | if (const IntegerType *IT = dyn_cast<IntegerType>(Ty)) { |
| 1986 | switch (IT->getBitWidth()) { |
| 1987 | case 8: |
| 1988 | case 16: |
| 1989 | case 32: |
| 1990 | case 64: |
| 1991 | return true; |
| 1992 | default: break; |
| 1993 | } |
| 1994 | } |
| 1995 | return false; |
| 1996 | } |
| 1997 | |
| 1998 | /// getElementByteSize - Return the size in bytes of the elements in the data. |
| 1999 | uint64_t ConstantDataSequential::getElementByteSize() const { |
| 2000 | return getElementType()->getPrimitiveSizeInBits()/8; |
| 2001 | } |
| 2002 | |
| 2003 | /// getElementPointer - Return the start of the specified element. |
| 2004 | const char *ConstantDataSequential::getElementPointer(unsigned Elt) const { |
| 2005 | assert(Elt < getElementType()->getNumElements() && "Invalid Elt"); |
| 2006 | return DataElements+Elt*getElementByteSize(); |
| 2007 | } |
| 2008 | |
| 2009 | |
Chris Lattner | 27dd9cf | 2012-01-23 22:57:10 +0000 | [diff] [blame] | 2010 | /// isAllZeros - return true if the array is empty or all zeros. |
| 2011 | static bool isAllZeros(StringRef Arr) { |
| 2012 | for (StringRef::iterator I = Arr.begin(), E = Arr.end(); I != E; ++I) |
| 2013 | if (*I != 0) |
| 2014 | return false; |
| 2015 | return true; |
| 2016 | } |
Chris Lattner | ff2b7f3 | 2012-01-24 05:42:11 +0000 | [diff] [blame^] | 2017 | |
Chris Lattner | 27dd9cf | 2012-01-23 22:57:10 +0000 | [diff] [blame] | 2018 | /// getImpl - This is the underlying implementation of all of the |
| 2019 | /// ConstantDataSequential::get methods. They all thunk down to here, providing |
| 2020 | /// the correct element type. We take the bytes in as an StringRef because |
| 2021 | /// we *want* an underlying "char*" to avoid TBAA type punning violations. |
| 2022 | Constant *ConstantDataSequential::getImpl(StringRef Elements, Type *Ty) { |
Chris Lattner | ff2b7f3 | 2012-01-24 05:42:11 +0000 | [diff] [blame^] | 2023 | assert(isElementTypeCompatible(cast<SequentialType>(Ty)->getElementType())); |
Chris Lattner | 27dd9cf | 2012-01-23 22:57:10 +0000 | [diff] [blame] | 2024 | // If the elements are all zero, return a CAZ, which is more dense. |
| 2025 | if (isAllZeros(Elements)) |
| 2026 | return ConstantAggregateZero::get(Ty); |
| 2027 | |
| 2028 | // Do a lookup to see if we have already formed one of these. |
| 2029 | StringMap<ConstantDataSequential*>::MapEntryTy &Slot = |
| 2030 | Ty->getContext().pImpl->CDSConstants.GetOrCreateValue(Elements); |
| 2031 | |
| 2032 | // The bucket can point to a linked list of different CDS's that have the same |
| 2033 | // body but different types. For example, 0,0,0,1 could be a 4 element array |
| 2034 | // of i8, or a 1-element array of i32. They'll both end up in the same |
| 2035 | /// StringMap bucket, linked up by their Next pointers. Walk the list. |
| 2036 | ConstantDataSequential **Entry = &Slot.getValue(); |
| 2037 | for (ConstantDataSequential *Node = *Entry; Node != 0; |
| 2038 | Entry = &Node->Next, Node = *Entry) |
| 2039 | if (Node->getType() == Ty) |
| 2040 | return Node; |
| 2041 | |
| 2042 | // Okay, we didn't get a hit. Create a node of the right class, link it in, |
| 2043 | // and return it. |
| 2044 | if (isa<ArrayType>(Ty)) |
| 2045 | return *Entry = new ConstantDataArray(Ty, Slot.getKeyData()); |
| 2046 | |
| 2047 | assert(isa<VectorType>(Ty)); |
| 2048 | return *Entry = new ConstantDataVector(Ty, Slot.getKeyData()); |
| 2049 | } |
| 2050 | |
| 2051 | void ConstantDataSequential::destroyConstant() { |
Chris Lattner | 45bb5c5 | 2012-01-24 04:43:41 +0000 | [diff] [blame] | 2052 | uint64_t ByteSize = getElementByteSize() * getElementType()->getNumElements(); |
Chris Lattner | 27dd9cf | 2012-01-23 22:57:10 +0000 | [diff] [blame] | 2053 | |
| 2054 | // Remove the constant from the StringMap. |
| 2055 | StringMap<ConstantDataSequential*> &CDSConstants = |
| 2056 | getType()->getContext().pImpl->CDSConstants; |
| 2057 | |
| 2058 | StringMap<ConstantDataSequential*>::iterator Slot = |
| 2059 | CDSConstants.find(StringRef(DataElements, ByteSize)); |
| 2060 | |
| 2061 | assert(Slot != CDSConstants.end() && "CDS not found in uniquing table"); |
| 2062 | |
| 2063 | ConstantDataSequential **Entry = &Slot->getValue(); |
| 2064 | |
| 2065 | // Remove the entry from the hash table. |
| 2066 | if ((*Entry)->Next == 0) { |
| 2067 | // If there is only one value in the bucket (common case) it must be this |
| 2068 | // entry, and removing the entry should remove the bucket completely. |
| 2069 | assert((*Entry) == this && "Hash mismatch in ConstantDataSequential"); |
| 2070 | getContext().pImpl->CDSConstants.erase(Slot); |
| 2071 | } else { |
| 2072 | // Otherwise, there are multiple entries linked off the bucket, unlink the |
| 2073 | // node we care about but keep the bucket around. |
| 2074 | for (ConstantDataSequential *Node = *Entry; ; |
| 2075 | Entry = &Node->Next, Node = *Entry) { |
| 2076 | assert(Node && "Didn't find entry in its uniquing hash table!"); |
| 2077 | // If we found our entry, unlink it from the list and we're done. |
| 2078 | if (Node == this) { |
| 2079 | *Entry = Node->Next; |
| 2080 | break; |
| 2081 | } |
| 2082 | } |
| 2083 | } |
| 2084 | |
| 2085 | // If we were part of a list, make sure that we don't delete the list that is |
| 2086 | // still owned by the uniquing map. |
| 2087 | Next = 0; |
| 2088 | |
| 2089 | // Finally, actually delete it. |
| 2090 | destroyConstantImpl(); |
| 2091 | } |
| 2092 | |
| 2093 | /// get() constructors - Return a constant with array type with an element |
| 2094 | /// count and element type matching the ArrayRef passed in. Note that this |
| 2095 | /// can return a ConstantAggregateZero object. |
| 2096 | Constant *ConstantDataArray::get(ArrayRef<uint8_t> Elts, LLVMContext &Context) { |
| 2097 | Type *Ty = ArrayType::get(Type::getInt8Ty(Context), Elts.size()); |
| 2098 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*1), Ty); |
| 2099 | } |
| 2100 | Constant *ConstantDataArray::get(ArrayRef<uint16_t> Elts, LLVMContext &Context){ |
| 2101 | Type *Ty = ArrayType::get(Type::getInt16Ty(Context), Elts.size()); |
| 2102 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*2), Ty); |
| 2103 | } |
| 2104 | Constant *ConstantDataArray::get(ArrayRef<uint32_t> Elts, LLVMContext &Context){ |
| 2105 | Type *Ty = ArrayType::get(Type::getInt32Ty(Context), Elts.size()); |
| 2106 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*4), Ty); |
| 2107 | } |
| 2108 | Constant *ConstantDataArray::get(ArrayRef<uint64_t> Elts, LLVMContext &Context){ |
| 2109 | Type *Ty = ArrayType::get(Type::getInt64Ty(Context), Elts.size()); |
| 2110 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*8), Ty); |
| 2111 | } |
| 2112 | Constant *ConstantDataArray::get(ArrayRef<float> Elts, LLVMContext &Context) { |
| 2113 | Type *Ty = ArrayType::get(Type::getFloatTy(Context), Elts.size()); |
| 2114 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*4), Ty); |
| 2115 | } |
| 2116 | Constant *ConstantDataArray::get(ArrayRef<double> Elts, LLVMContext &Context) { |
| 2117 | Type *Ty = ArrayType::get(Type::getDoubleTy(Context), Elts.size()); |
| 2118 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*8), Ty); |
| 2119 | } |
| 2120 | |
| 2121 | |
| 2122 | /// get() constructors - Return a constant with vector type with an element |
| 2123 | /// count and element type matching the ArrayRef passed in. Note that this |
| 2124 | /// can return a ConstantAggregateZero object. |
| 2125 | Constant *ConstantDataVector::get(ArrayRef<uint8_t> Elts, LLVMContext &Context) { |
| 2126 | Type *Ty = VectorType::get(Type::getInt8Ty(Context), Elts.size()); |
| 2127 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*1), Ty); |
| 2128 | } |
| 2129 | Constant *ConstantDataVector::get(ArrayRef<uint16_t> Elts, LLVMContext &Context){ |
| 2130 | Type *Ty = VectorType::get(Type::getInt16Ty(Context), Elts.size()); |
| 2131 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*2), Ty); |
| 2132 | } |
| 2133 | Constant *ConstantDataVector::get(ArrayRef<uint32_t> Elts, LLVMContext &Context){ |
| 2134 | Type *Ty = VectorType::get(Type::getInt32Ty(Context), Elts.size()); |
| 2135 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*4), Ty); |
| 2136 | } |
| 2137 | Constant *ConstantDataVector::get(ArrayRef<uint64_t> Elts, LLVMContext &Context){ |
| 2138 | Type *Ty = VectorType::get(Type::getInt64Ty(Context), Elts.size()); |
| 2139 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*8), Ty); |
| 2140 | } |
| 2141 | Constant *ConstantDataVector::get(ArrayRef<float> Elts, LLVMContext &Context) { |
| 2142 | Type *Ty = VectorType::get(Type::getFloatTy(Context), Elts.size()); |
| 2143 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*4), Ty); |
| 2144 | } |
| 2145 | Constant *ConstantDataVector::get(ArrayRef<double> Elts, LLVMContext &Context) { |
| 2146 | Type *Ty = VectorType::get(Type::getDoubleTy(Context), Elts.size()); |
| 2147 | return getImpl(StringRef((char*)Elts.data(), Elts.size()*8), Ty); |
| 2148 | } |
| 2149 | |
Chris Lattner | 45bb5c5 | 2012-01-24 04:43:41 +0000 | [diff] [blame] | 2150 | /// getElementAsInteger - If this is a sequential container of integers (of |
| 2151 | /// any size), return the specified element in the low bits of a uint64_t. |
| 2152 | uint64_t ConstantDataSequential::getElementAsInteger(unsigned Elt) const { |
| 2153 | assert(isa<IntegerType>(getElementType()) && |
| 2154 | "Accessor can only be used when element is an integer"); |
| 2155 | const char *EltPtr = getElementPointer(Elt); |
| 2156 | |
| 2157 | // The data is stored in host byte order, make sure to cast back to the right |
| 2158 | // type to load with the right endianness. |
| 2159 | switch (cast<IntegerType>(getElementType())->getBitWidth()) { |
| 2160 | default: assert(0 && "Invalid bitwidth for CDS"); |
| 2161 | case 8: return *(uint8_t*)EltPtr; |
| 2162 | case 16: return *(uint16_t*)EltPtr; |
| 2163 | case 32: return *(uint32_t*)EltPtr; |
| 2164 | case 64: return *(uint64_t*)EltPtr; |
| 2165 | } |
| 2166 | } |
| 2167 | |
| 2168 | /// getElementAsAPFloat - If this is a sequential container of floating point |
| 2169 | /// type, return the specified element as an APFloat. |
| 2170 | APFloat ConstantDataSequential::getElementAsAPFloat(unsigned Elt) const { |
| 2171 | const char *EltPtr = getElementPointer(Elt); |
| 2172 | |
| 2173 | switch (getElementType()->getTypeID()) { |
| 2174 | default: assert("Accessor can only be used when element is float/double!"); |
| 2175 | case Type::FloatTyID: return APFloat(*(float*)EltPtr); |
| 2176 | case Type::DoubleTyID: return APFloat(*(double*)EltPtr); |
| 2177 | } |
| 2178 | } |
| 2179 | |
| 2180 | /// getElementAsFloat - If this is an sequential container of floats, return |
| 2181 | /// the specified element as a float. |
| 2182 | float ConstantDataSequential::getElementAsFloat(unsigned Elt) const { |
| 2183 | assert(getElementType()->isFloatTy() && |
| 2184 | "Accessor can only be used when element is a 'float'"); |
| 2185 | return *(float*)getElementPointer(Elt); |
| 2186 | } |
| 2187 | |
| 2188 | /// getElementAsDouble - If this is an sequential container of doubles, return |
| 2189 | /// the specified element as a float. |
| 2190 | double ConstantDataSequential::getElementAsDouble(unsigned Elt) const { |
| 2191 | assert(getElementType()->isDoubleTy() && |
| 2192 | "Accessor can only be used when element is a 'float'"); |
| 2193 | return *(double*)getElementPointer(Elt); |
| 2194 | } |
| 2195 | |
| 2196 | /// getElementAsConstant - Return a Constant for a specified index's element. |
| 2197 | /// Note that this has to compute a new constant to return, so it isn't as |
| 2198 | /// efficient as getElementAsInteger/Float/Double. |
| 2199 | Constant *ConstantDataSequential::getElementAsConstant(unsigned Elt) const { |
| 2200 | if (getElementType()->isFloatTy() || getElementType()->isDoubleTy()) |
| 2201 | return ConstantFP::get(getContext(), getElementAsAPFloat(Elt)); |
| 2202 | |
| 2203 | return ConstantInt::get(getElementType(), getElementAsInteger(Elt)); |
| 2204 | } |
| 2205 | |
Chris Lattner | 27dd9cf | 2012-01-23 22:57:10 +0000 | [diff] [blame] | 2206 | |
| 2207 | |
Chris Lattner | 04e3b1e | 2010-03-30 20:48:48 +0000 | [diff] [blame] | 2208 | |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2209 | //===----------------------------------------------------------------------===// |
| 2210 | // replaceUsesOfWithOnConstant implementations |
| 2211 | |
Chris Lattner | 5498405 | 2007-08-21 00:55:23 +0000 | [diff] [blame] | 2212 | /// replaceUsesOfWithOnConstant - Update this constant array to change uses of |
| 2213 | /// 'From' to be uses of 'To'. This must update the uniquing data structures |
| 2214 | /// etc. |
| 2215 | /// |
| 2216 | /// Note that we intentionally replace all uses of From with To here. Consider |
| 2217 | /// a large array that uses 'From' 1000 times. By handling this case all here, |
| 2218 | /// ConstantArray::replaceUsesOfWithOnConstant is only invoked once, and that |
| 2219 | /// single invocation handles all 1000 uses. Handling them one at a time would |
| 2220 | /// work, but would be really slow because it would have to unique each updated |
| 2221 | /// array instance. |
Chris Lattner | 2ee11ec | 2009-10-28 00:01:44 +0000 | [diff] [blame] | 2222 | /// |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2223 | void ConstantArray::replaceUsesOfWithOnConstant(Value *From, Value *To, |
Chris Lattner | d0ff1ad | 2005-10-04 18:13:04 +0000 | [diff] [blame] | 2224 | Use *U) { |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 2225 | assert(isa<Constant>(To) && "Cannot make Constant refer to non-constant!"); |
| 2226 | Constant *ToC = cast<Constant>(To); |
| 2227 | |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 2228 | LLVMContextImpl *pImpl = getType()->getContext().pImpl; |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 2229 | |
Dan Gohman | e3394d4 | 2009-09-15 15:58:07 +0000 | [diff] [blame] | 2230 | std::pair<LLVMContextImpl::ArrayConstantsTy::MapKey, ConstantArray*> Lookup; |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 2231 | Lookup.first.first = cast<ArrayType>(getType()); |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 2232 | Lookup.second = this; |
| 2233 | |
| 2234 | std::vector<Constant*> &Values = Lookup.first.second; |
| 2235 | Values.reserve(getNumOperands()); // Build replacement array. |
| 2236 | |
| 2237 | // Fill values with the modified operands of the constant array. Also, |
| 2238 | // compute whether this turns into an all-zeros array. |
| 2239 | bool isAllZeros = false; |
| 2240 | unsigned NumUpdated = 0; |
| 2241 | if (!ToC->isNullValue()) { |
| 2242 | for (Use *O = OperandList, *E = OperandList+getNumOperands(); O != E; ++O) { |
| 2243 | Constant *Val = cast<Constant>(O->get()); |
| 2244 | if (Val == From) { |
| 2245 | Val = ToC; |
| 2246 | ++NumUpdated; |
| 2247 | } |
| 2248 | Values.push_back(Val); |
| 2249 | } |
| 2250 | } else { |
| 2251 | isAllZeros = true; |
| 2252 | for (Use *O = OperandList, *E = OperandList+getNumOperands();O != E; ++O) { |
| 2253 | Constant *Val = cast<Constant>(O->get()); |
| 2254 | if (Val == From) { |
| 2255 | Val = ToC; |
| 2256 | ++NumUpdated; |
| 2257 | } |
| 2258 | Values.push_back(Val); |
| 2259 | if (isAllZeros) isAllZeros = Val->isNullValue(); |
| 2260 | } |
| 2261 | } |
| 2262 | |
| 2263 | Constant *Replacement = 0; |
| 2264 | if (isAllZeros) { |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 2265 | Replacement = ConstantAggregateZero::get(getType()); |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 2266 | } else { |
| 2267 | // Check to see if we have this array type already. |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 2268 | bool Exists; |
| 2269 | LLVMContextImpl::ArrayConstantsTy::MapTy::iterator I = |
| 2270 | pImpl->ArrayConstants.InsertOrGetItem(Lookup, Exists); |
| 2271 | |
| 2272 | if (Exists) { |
Devang Patel | 5f4ac84 | 2009-09-03 01:39:20 +0000 | [diff] [blame] | 2273 | Replacement = I->second; |
Owen Anderson | 1fd7096 | 2009-07-28 18:32:17 +0000 | [diff] [blame] | 2274 | } else { |
| 2275 | // Okay, the new shape doesn't exist in the system yet. Instead of |
| 2276 | // creating a new constant array, inserting it, replaceallusesof'ing the |
| 2277 | // old with the new, then deleting the old... just update the current one |
| 2278 | // in place! |
| 2279 | pImpl->ArrayConstants.MoveConstantToNewSlot(this, I); |
| 2280 | |
| 2281 | // Update to the new value. Optimize for the case when we have a single |
| 2282 | // operand that we're changing, but handle bulk updates efficiently. |
| 2283 | if (NumUpdated == 1) { |
| 2284 | unsigned OperandToUpdate = U - OperandList; |
| 2285 | assert(getOperand(OperandToUpdate) == From && |
| 2286 | "ReplaceAllUsesWith broken!"); |
| 2287 | setOperand(OperandToUpdate, ToC); |
| 2288 | } else { |
| 2289 | for (unsigned i = 0, e = getNumOperands(); i != e; ++i) |
| 2290 | if (getOperand(i) == From) |
| 2291 | setOperand(i, ToC); |
| 2292 | } |
| 2293 | return; |
| 2294 | } |
| 2295 | } |
Chris Lattner | cea141f | 2005-10-03 22:51:37 +0000 | [diff] [blame] | 2296 | |
| 2297 | // Otherwise, I do need to replace this with an existing value. |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2298 | assert(Replacement != this && "I didn't contain From!"); |
| 2299 | |
Chris Lattner | d0ff1ad | 2005-10-04 18:13:04 +0000 | [diff] [blame] | 2300 | // Everyone using this now uses the replacement. |
Chris Lattner | 678f9e0 | 2011-07-15 06:18:52 +0000 | [diff] [blame] | 2301 | replaceAllUsesWith(Replacement); |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2302 | |
| 2303 | // Delete the old constant! |
| 2304 | destroyConstant(); |
| 2305 | } |
| 2306 | |
| 2307 | void ConstantStruct::replaceUsesOfWithOnConstant(Value *From, Value *To, |
Chris Lattner | d0ff1ad | 2005-10-04 18:13:04 +0000 | [diff] [blame] | 2308 | Use *U) { |
Owen Anderson | 8fa3338 | 2009-07-27 22:29:26 +0000 | [diff] [blame] | 2309 | assert(isa<Constant>(To) && "Cannot make Constant refer to non-constant!"); |
| 2310 | Constant *ToC = cast<Constant>(To); |
| 2311 | |
| 2312 | unsigned OperandToUpdate = U-OperandList; |
| 2313 | assert(getOperand(OperandToUpdate) == From && "ReplaceAllUsesWith broken!"); |
| 2314 | |
Dan Gohman | e3394d4 | 2009-09-15 15:58:07 +0000 | [diff] [blame] | 2315 | std::pair<LLVMContextImpl::StructConstantsTy::MapKey, ConstantStruct*> Lookup; |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 2316 | Lookup.first.first = cast<StructType>(getType()); |
Owen Anderson | 8fa3338 | 2009-07-27 22:29:26 +0000 | [diff] [blame] | 2317 | Lookup.second = this; |
| 2318 | std::vector<Constant*> &Values = Lookup.first.second; |
| 2319 | Values.reserve(getNumOperands()); // Build replacement struct. |
| 2320 | |
| 2321 | |
| 2322 | // Fill values with the modified operands of the constant struct. Also, |
| 2323 | // compute whether this turns into an all-zeros struct. |
| 2324 | bool isAllZeros = false; |
| 2325 | if (!ToC->isNullValue()) { |
| 2326 | for (Use *O = OperandList, *E = OperandList + getNumOperands(); O != E; ++O) |
| 2327 | Values.push_back(cast<Constant>(O->get())); |
| 2328 | } else { |
| 2329 | isAllZeros = true; |
| 2330 | for (Use *O = OperandList, *E = OperandList+getNumOperands(); O != E; ++O) { |
| 2331 | Constant *Val = cast<Constant>(O->get()); |
| 2332 | Values.push_back(Val); |
| 2333 | if (isAllZeros) isAllZeros = Val->isNullValue(); |
| 2334 | } |
| 2335 | } |
| 2336 | Values[OperandToUpdate] = ToC; |
| 2337 | |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 2338 | LLVMContextImpl *pImpl = getContext().pImpl; |
Owen Anderson | 8fa3338 | 2009-07-27 22:29:26 +0000 | [diff] [blame] | 2339 | |
| 2340 | Constant *Replacement = 0; |
| 2341 | if (isAllZeros) { |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 2342 | Replacement = ConstantAggregateZero::get(getType()); |
Owen Anderson | 8fa3338 | 2009-07-27 22:29:26 +0000 | [diff] [blame] | 2343 | } else { |
Chris Lattner | 93604b6 | 2010-07-17 06:13:52 +0000 | [diff] [blame] | 2344 | // Check to see if we have this struct type already. |
Owen Anderson | 8fa3338 | 2009-07-27 22:29:26 +0000 | [diff] [blame] | 2345 | bool Exists; |
| 2346 | LLVMContextImpl::StructConstantsTy::MapTy::iterator I = |
| 2347 | pImpl->StructConstants.InsertOrGetItem(Lookup, Exists); |
| 2348 | |
| 2349 | if (Exists) { |
Devang Patel | 5f4ac84 | 2009-09-03 01:39:20 +0000 | [diff] [blame] | 2350 | Replacement = I->second; |
Owen Anderson | 8fa3338 | 2009-07-27 22:29:26 +0000 | [diff] [blame] | 2351 | } else { |
| 2352 | // Okay, the new shape doesn't exist in the system yet. Instead of |
| 2353 | // creating a new constant struct, inserting it, replaceallusesof'ing the |
| 2354 | // old with the new, then deleting the old... just update the current one |
| 2355 | // in place! |
| 2356 | pImpl->StructConstants.MoveConstantToNewSlot(this, I); |
| 2357 | |
| 2358 | // Update to the new value. |
| 2359 | setOperand(OperandToUpdate, ToC); |
| 2360 | return; |
| 2361 | } |
| 2362 | } |
| 2363 | |
| 2364 | assert(Replacement != this && "I didn't contain From!"); |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2365 | |
Chris Lattner | d0ff1ad | 2005-10-04 18:13:04 +0000 | [diff] [blame] | 2366 | // Everyone using this now uses the replacement. |
Chris Lattner | 678f9e0 | 2011-07-15 06:18:52 +0000 | [diff] [blame] | 2367 | replaceAllUsesWith(Replacement); |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2368 | |
| 2369 | // Delete the old constant! |
| 2370 | destroyConstant(); |
| 2371 | } |
| 2372 | |
Reid Spencer | 9d6565a | 2007-02-15 02:26:10 +0000 | [diff] [blame] | 2373 | void ConstantVector::replaceUsesOfWithOnConstant(Value *From, Value *To, |
Chris Lattner | d0ff1ad | 2005-10-04 18:13:04 +0000 | [diff] [blame] | 2374 | Use *U) { |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2375 | assert(isa<Constant>(To) && "Cannot make Constant refer to non-constant!"); |
| 2376 | |
| 2377 | std::vector<Constant*> Values; |
| 2378 | Values.reserve(getNumOperands()); // Build replacement array... |
| 2379 | for (unsigned i = 0, e = getNumOperands(); i != e; ++i) { |
| 2380 | Constant *Val = getOperand(i); |
| 2381 | if (Val == From) Val = cast<Constant>(To); |
| 2382 | Values.push_back(Val); |
| 2383 | } |
| 2384 | |
Jay Foad | a0c1384 | 2011-06-22 09:10:19 +0000 | [diff] [blame] | 2385 | Constant *Replacement = get(Values); |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2386 | assert(Replacement != this && "I didn't contain From!"); |
| 2387 | |
Chris Lattner | d0ff1ad | 2005-10-04 18:13:04 +0000 | [diff] [blame] | 2388 | // Everyone using this now uses the replacement. |
Chris Lattner | 678f9e0 | 2011-07-15 06:18:52 +0000 | [diff] [blame] | 2389 | replaceAllUsesWith(Replacement); |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2390 | |
| 2391 | // Delete the old constant! |
| 2392 | destroyConstant(); |
| 2393 | } |
| 2394 | |
| 2395 | void ConstantExpr::replaceUsesOfWithOnConstant(Value *From, Value *ToV, |
Chris Lattner | d0ff1ad | 2005-10-04 18:13:04 +0000 | [diff] [blame] | 2396 | Use *U) { |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2397 | assert(isa<Constant>(ToV) && "Cannot make Constant refer to non-constant!"); |
| 2398 | Constant *To = cast<Constant>(ToV); |
| 2399 | |
| 2400 | Constant *Replacement = 0; |
| 2401 | if (getOpcode() == Instruction::GetElementPtr) { |
Chris Lattner | f9021ff | 2007-02-19 20:01:23 +0000 | [diff] [blame] | 2402 | SmallVector<Constant*, 8> Indices; |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2403 | Constant *Pointer = getOperand(0); |
| 2404 | Indices.reserve(getNumOperands()-1); |
| 2405 | if (Pointer == From) Pointer = To; |
| 2406 | |
| 2407 | for (unsigned i = 1, e = getNumOperands(); i != e; ++i) { |
| 2408 | Constant *Val = getOperand(i); |
| 2409 | if (Val == From) Val = To; |
| 2410 | Indices.push_back(Val); |
| 2411 | } |
Jay Foad | dab3d29 | 2011-07-21 14:31:17 +0000 | [diff] [blame] | 2412 | Replacement = ConstantExpr::getGetElementPtr(Pointer, Indices, |
Chris Lattner | 33a8f33 | 2011-02-11 05:37:21 +0000 | [diff] [blame] | 2413 | cast<GEPOperator>(this)->isInBounds()); |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 2414 | } else if (getOpcode() == Instruction::ExtractValue) { |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 2415 | Constant *Agg = getOperand(0); |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 2416 | if (Agg == From) Agg = To; |
| 2417 | |
Jay Foad | d30aa5a | 2011-04-13 15:22:40 +0000 | [diff] [blame] | 2418 | ArrayRef<unsigned> Indices = getIndices(); |
Jay Foad | fc6d3a4 | 2011-07-13 10:26:04 +0000 | [diff] [blame] | 2419 | Replacement = ConstantExpr::getExtractValue(Agg, Indices); |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 2420 | } else if (getOpcode() == Instruction::InsertValue) { |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 2421 | Constant *Agg = getOperand(0); |
| 2422 | Constant *Val = getOperand(1); |
Dan Gohman | 041e2eb | 2008-05-15 19:50:34 +0000 | [diff] [blame] | 2423 | if (Agg == From) Agg = To; |
| 2424 | if (Val == From) Val = To; |
| 2425 | |
Jay Foad | d30aa5a | 2011-04-13 15:22:40 +0000 | [diff] [blame] | 2426 | ArrayRef<unsigned> Indices = getIndices(); |
Jay Foad | fc6d3a4 | 2011-07-13 10:26:04 +0000 | [diff] [blame] | 2427 | Replacement = ConstantExpr::getInsertValue(Agg, Val, Indices); |
Reid Spencer | 3da59db | 2006-11-27 01:05:10 +0000 | [diff] [blame] | 2428 | } else if (isCast()) { |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2429 | assert(getOperand(0) == From && "Cast only has one use!"); |
Chris Lattner | 1afcace | 2011-07-09 17:41:24 +0000 | [diff] [blame] | 2430 | Replacement = ConstantExpr::getCast(getOpcode(), To, getType()); |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2431 | } else if (getOpcode() == Instruction::Select) { |
| 2432 | Constant *C1 = getOperand(0); |
| 2433 | Constant *C2 = getOperand(1); |
| 2434 | Constant *C3 = getOperand(2); |
| 2435 | if (C1 == From) C1 = To; |
| 2436 | if (C2 == From) C2 = To; |
| 2437 | if (C3 == From) C3 = To; |
| 2438 | Replacement = ConstantExpr::getSelect(C1, C2, C3); |
Robert Bocchino | b52ee7f | 2006-01-10 19:05:34 +0000 | [diff] [blame] | 2439 | } else if (getOpcode() == Instruction::ExtractElement) { |
| 2440 | Constant *C1 = getOperand(0); |
| 2441 | Constant *C2 = getOperand(1); |
| 2442 | if (C1 == From) C1 = To; |
| 2443 | if (C2 == From) C2 = To; |
| 2444 | Replacement = ConstantExpr::getExtractElement(C1, C2); |
Chris Lattner | 42b5580 | 2006-04-08 05:09:48 +0000 | [diff] [blame] | 2445 | } else if (getOpcode() == Instruction::InsertElement) { |
| 2446 | Constant *C1 = getOperand(0); |
| 2447 | Constant *C2 = getOperand(1); |
| 2448 | Constant *C3 = getOperand(1); |
| 2449 | if (C1 == From) C1 = To; |
| 2450 | if (C2 == From) C2 = To; |
| 2451 | if (C3 == From) C3 = To; |
| 2452 | Replacement = ConstantExpr::getInsertElement(C1, C2, C3); |
| 2453 | } else if (getOpcode() == Instruction::ShuffleVector) { |
| 2454 | Constant *C1 = getOperand(0); |
| 2455 | Constant *C2 = getOperand(1); |
| 2456 | Constant *C3 = getOperand(2); |
| 2457 | if (C1 == From) C1 = To; |
| 2458 | if (C2 == From) C2 = To; |
| 2459 | if (C3 == From) C3 = To; |
| 2460 | Replacement = ConstantExpr::getShuffleVector(C1, C2, C3); |
Reid Spencer | 077d0eb | 2006-12-04 05:19:50 +0000 | [diff] [blame] | 2461 | } else if (isCompare()) { |
| 2462 | Constant *C1 = getOperand(0); |
| 2463 | Constant *C2 = getOperand(1); |
| 2464 | if (C1 == From) C1 = To; |
| 2465 | if (C2 == From) C2 = To; |
| 2466 | if (getOpcode() == Instruction::ICmp) |
| 2467 | Replacement = ConstantExpr::getICmp(getPredicate(), C1, C2); |
Chris Lattner | bbedb0e | 2008-07-14 05:17:31 +0000 | [diff] [blame] | 2468 | else { |
Nick Lewycky | 7f6aa2b | 2009-07-08 03:04:38 +0000 | [diff] [blame] | 2469 | assert(getOpcode() == Instruction::FCmp); |
| 2470 | Replacement = ConstantExpr::getFCmp(getPredicate(), C1, C2); |
Chris Lattner | bbedb0e | 2008-07-14 05:17:31 +0000 | [diff] [blame] | 2471 | } |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2472 | } else if (getNumOperands() == 2) { |
| 2473 | Constant *C1 = getOperand(0); |
| 2474 | Constant *C2 = getOperand(1); |
| 2475 | if (C1 == From) C1 = To; |
| 2476 | if (C2 == From) C2 = To; |
Chris Lattner | cafe9bb | 2009-12-29 02:14:09 +0000 | [diff] [blame] | 2477 | Replacement = ConstantExpr::get(getOpcode(), C1, C2, SubclassOptionalData); |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2478 | } else { |
Torok Edwin | c23197a | 2009-07-14 16:55:14 +0000 | [diff] [blame] | 2479 | llvm_unreachable("Unknown ConstantExpr type!"); |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2480 | } |
| 2481 | |
| 2482 | assert(Replacement != this && "I didn't contain From!"); |
| 2483 | |
Chris Lattner | d0ff1ad | 2005-10-04 18:13:04 +0000 | [diff] [blame] | 2484 | // Everyone using this now uses the replacement. |
Chris Lattner | 678f9e0 | 2011-07-15 06:18:52 +0000 | [diff] [blame] | 2485 | replaceAllUsesWith(Replacement); |
Chris Lattner | 5cbade9 | 2005-10-03 21:58:36 +0000 | [diff] [blame] | 2486 | |
| 2487 | // Delete the old constant! |
| 2488 | destroyConstant(); |
Matthijs Kooijman | 10b9de6 | 2008-07-03 07:46:41 +0000 | [diff] [blame] | 2489 | } |