Chris Lattner | 8494d08 | 2002-10-28 01:16:38 +0000 | [diff] [blame] | 1 | //===-- MachineFunction.cpp -----------------------------------------------===// |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 2 | // |
John Criswell | 482202a | 2003-10-20 19:43:21 +0000 | [diff] [blame] | 3 | // The LLVM Compiler Infrastructure |
| 4 | // |
| 5 | // This file was developed by the LLVM research group and is distributed under |
| 6 | // the University of Illinois Open Source License. See LICENSE.TXT for details. |
| 7 | // |
| 8 | //===----------------------------------------------------------------------===// |
| 9 | // |
Chris Lattner | 8494d08 | 2002-10-28 01:16:38 +0000 | [diff] [blame] | 10 | // Collect native machine code information for a function. This allows |
| 11 | // target-specific information about the generated code to be stored with each |
| 12 | // function. |
| 13 | // |
| 14 | //===----------------------------------------------------------------------===// |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 15 | |
Chris Lattner | 8494d08 | 2002-10-28 01:16:38 +0000 | [diff] [blame] | 16 | #include "llvm/CodeGen/MachineFunction.h" |
Chris Lattner | 448fb45 | 2002-12-25 05:03:22 +0000 | [diff] [blame] | 17 | #include "llvm/CodeGen/MachineInstr.h" |
Chris Lattner | 6d8a6c6 | 2002-10-28 01:12:41 +0000 | [diff] [blame] | 18 | #include "llvm/CodeGen/MachineCodeForInstruction.h" |
Chris Lattner | 448fb45 | 2002-12-25 05:03:22 +0000 | [diff] [blame] | 19 | #include "llvm/CodeGen/SSARegMap.h" |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 20 | #include "llvm/CodeGen/MachineFunctionInfo.h" |
Chris Lattner | ca4362f | 2002-12-28 21:08:26 +0000 | [diff] [blame] | 21 | #include "llvm/CodeGen/MachineFrameInfo.h" |
Chris Lattner | c6807e8 | 2003-01-13 00:23:03 +0000 | [diff] [blame] | 22 | #include "llvm/CodeGen/MachineConstantPool.h" |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 23 | #include "llvm/Target/TargetMachine.h" |
Chris Lattner | 871e591 | 2002-12-28 21:00:25 +0000 | [diff] [blame] | 24 | #include "llvm/Target/TargetFrameInfo.h" |
Chris Lattner | 42d5921 | 2002-12-29 02:50:35 +0000 | [diff] [blame] | 25 | #include "llvm/Target/TargetCacheInfo.h" |
Chris Lattner | 62b7fd1 | 2002-04-07 20:49:59 +0000 | [diff] [blame] | 26 | #include "llvm/Function.h" |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 27 | #include "llvm/iOther.h" |
Chris Lattner | 6d8a6c6 | 2002-10-28 01:12:41 +0000 | [diff] [blame] | 28 | #include "llvm/Pass.h" |
Chris Lattner | 9a3478e | 2003-12-20 09:17:07 +0000 | [diff] [blame^] | 29 | using namespace llvm; |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 30 | |
Chris Lattner | bbd68ad | 2002-10-29 23:18:43 +0000 | [diff] [blame] | 31 | static AnnotationID MF_AID( |
Chris Lattner | 62b7fd1 | 2002-04-07 20:49:59 +0000 | [diff] [blame] | 32 | AnnotationManager::getID("CodeGen::MachineCodeForFunction")); |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 33 | |
Chris Lattner | 6d8a6c6 | 2002-10-28 01:12:41 +0000 | [diff] [blame] | 34 | |
Chris Lattner | 6d8a6c6 | 2002-10-28 01:12:41 +0000 | [diff] [blame] | 35 | namespace { |
Chris Lattner | 214808f | 2002-10-30 00:48:05 +0000 | [diff] [blame] | 36 | struct Printer : public FunctionPass { |
| 37 | const char *getPassName() const { return "MachineFunction Printer"; } |
| 38 | |
| 39 | virtual void getAnalysisUsage(AnalysisUsage &AU) const { |
| 40 | AU.setPreservesAll(); |
| 41 | } |
| 42 | |
| 43 | bool runOnFunction(Function &F) { |
| 44 | MachineFunction::get(&F).dump(); |
| 45 | return false; |
| 46 | } |
| 47 | }; |
Chris Lattner | 6d8a6c6 | 2002-10-28 01:12:41 +0000 | [diff] [blame] | 48 | } |
| 49 | |
Chris Lattner | 9a3478e | 2003-12-20 09:17:07 +0000 | [diff] [blame^] | 50 | FunctionPass *llvm::createMachineFunctionPrinterPass() { |
Chris Lattner | 214808f | 2002-10-30 00:48:05 +0000 | [diff] [blame] | 51 | return new Printer(); |
| 52 | } |
| 53 | |
Chris Lattner | 6d8a6c6 | 2002-10-28 01:12:41 +0000 | [diff] [blame] | 54 | |
| 55 | //===---------------------------------------------------------------------===// |
| 56 | // MachineFunction implementation |
| 57 | //===---------------------------------------------------------------------===// |
| 58 | |
Chris Lattner | 214808f | 2002-10-30 00:48:05 +0000 | [diff] [blame] | 59 | MachineFunction::MachineFunction(const Function *F, |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 60 | const TargetMachine &TM) |
| 61 | : Annotation(MF_AID), Fn(F), Target(TM) { |
Misha Brukman | d5b111a | 2002-11-20 18:55:27 +0000 | [diff] [blame] | 62 | SSARegMapping = new SSARegMap(); |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 63 | MFInfo = new MachineFunctionInfo(*this); |
Chris Lattner | ca4362f | 2002-12-28 21:08:26 +0000 | [diff] [blame] | 64 | FrameInfo = new MachineFrameInfo(); |
Chris Lattner | c6807e8 | 2003-01-13 00:23:03 +0000 | [diff] [blame] | 65 | ConstantPool = new MachineConstantPool(); |
Chris Lattner | 448fb45 | 2002-12-25 05:03:22 +0000 | [diff] [blame] | 66 | } |
| 67 | |
| 68 | MachineFunction::~MachineFunction() { |
| 69 | delete SSARegMapping; |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 70 | delete MFInfo; |
| 71 | delete FrameInfo; |
Chris Lattner | c6807e8 | 2003-01-13 00:23:03 +0000 | [diff] [blame] | 72 | delete ConstantPool; |
Chris Lattner | 214808f | 2002-10-30 00:48:05 +0000 | [diff] [blame] | 73 | } |
| 74 | |
| 75 | void MachineFunction::dump() const { print(std::cerr); } |
| 76 | |
| 77 | void MachineFunction::print(std::ostream &OS) const { |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 78 | OS << "\n" << *(Value*)Fn->getFunctionType() << " \"" << Fn->getName() |
| 79 | << "\"\n"; |
| 80 | |
| 81 | // Print Frame Information |
Chris Lattner | eb45c98 | 2003-01-16 18:35:57 +0000 | [diff] [blame] | 82 | getFrameInfo()->print(*this, OS); |
Chris Lattner | c6807e8 | 2003-01-13 00:23:03 +0000 | [diff] [blame] | 83 | |
| 84 | // Print Constant Pool |
| 85 | getConstantPool()->print(OS); |
Chris Lattner | 214808f | 2002-10-30 00:48:05 +0000 | [diff] [blame] | 86 | |
| 87 | for (const_iterator BB = begin(); BB != end(); ++BB) { |
Chris Lattner | 414832f | 2003-07-26 23:24:56 +0000 | [diff] [blame] | 88 | const BasicBlock *LBB = BB->getBasicBlock(); |
Chris Lattner | f895418 | 2002-12-15 20:35:25 +0000 | [diff] [blame] | 89 | OS << "\n" << LBB->getName() << " (" << (const void*)LBB << "):\n"; |
Chris Lattner | 214808f | 2002-10-30 00:48:05 +0000 | [diff] [blame] | 90 | for (MachineBasicBlock::const_iterator I = BB->begin(); I != BB->end();++I){ |
| 91 | OS << "\t"; |
| 92 | (*I)->print(OS, Target); |
| 93 | } |
| 94 | } |
| 95 | OS << "\nEnd function \"" << Fn->getName() << "\"\n\n"; |
| 96 | } |
| 97 | |
| 98 | |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 99 | // The next two methods are used to construct and to retrieve |
Chris Lattner | 62b7fd1 | 2002-04-07 20:49:59 +0000 | [diff] [blame] | 100 | // the MachineCodeForFunction object for the given function. |
| 101 | // construct() -- Allocates and initializes for a given function and target |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 102 | // get() -- Returns a handle to the object. |
| 103 | // This should not be called before "construct()" |
Chris Lattner | 62b7fd1 | 2002-04-07 20:49:59 +0000 | [diff] [blame] | 104 | // for a given Function. |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 105 | // |
Misha Brukman | 7ae7f84 | 2002-10-28 00:28:31 +0000 | [diff] [blame] | 106 | MachineFunction& |
Chris Lattner | ba3a806 | 2002-10-28 05:58:46 +0000 | [diff] [blame] | 107 | MachineFunction::construct(const Function *Fn, const TargetMachine &Tar) |
Vikram S. Adve | 7446b32 | 2002-03-18 03:36:30 +0000 | [diff] [blame] | 108 | { |
Chris Lattner | bbd68ad | 2002-10-29 23:18:43 +0000 | [diff] [blame] | 109 | assert(Fn->getAnnotation(MF_AID) == 0 && |
Chris Lattner | 62b7fd1 | 2002-04-07 20:49:59 +0000 | [diff] [blame] | 110 | "Object already exists for this function!"); |
Chris Lattner | ba3a806 | 2002-10-28 05:58:46 +0000 | [diff] [blame] | 111 | MachineFunction* mcInfo = new MachineFunction(Fn, Tar); |
| 112 | Fn->addAnnotation(mcInfo); |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 113 | return *mcInfo; |
| 114 | } |
| 115 | |
Vikram S. Adve | 7446b32 | 2002-03-18 03:36:30 +0000 | [diff] [blame] | 116 | void |
Chris Lattner | ba3a806 | 2002-10-28 05:58:46 +0000 | [diff] [blame] | 117 | MachineFunction::destruct(const Function *Fn) |
Vikram S. Adve | 7446b32 | 2002-03-18 03:36:30 +0000 | [diff] [blame] | 118 | { |
Chris Lattner | bbd68ad | 2002-10-29 23:18:43 +0000 | [diff] [blame] | 119 | bool Deleted = Fn->deleteAnnotation(MF_AID); |
Chris Lattner | 62b7fd1 | 2002-04-07 20:49:59 +0000 | [diff] [blame] | 120 | assert(Deleted && "Machine code did not exist for function!"); |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 121 | } |
| 122 | |
Chris Lattner | ba3a806 | 2002-10-28 05:58:46 +0000 | [diff] [blame] | 123 | MachineFunction& MachineFunction::get(const Function *F) |
Vikram S. Adve | 7446b32 | 2002-03-18 03:36:30 +0000 | [diff] [blame] | 124 | { |
Chris Lattner | bbd68ad | 2002-10-29 23:18:43 +0000 | [diff] [blame] | 125 | MachineFunction *mc = (MachineFunction*)F->getAnnotation(MF_AID); |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 126 | assert(mc && "Call construct() method first to allocate the object"); |
| 127 | return *mc; |
| 128 | } |
| 129 | |
Chris Lattner | 448fb45 | 2002-12-25 05:03:22 +0000 | [diff] [blame] | 130 | void MachineFunction::clearSSARegMap() { |
| 131 | delete SSARegMapping; |
| 132 | SSARegMapping = 0; |
| 133 | } |
| 134 | |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 135 | //===----------------------------------------------------------------------===// |
Chris Lattner | ca4362f | 2002-12-28 21:08:26 +0000 | [diff] [blame] | 136 | // MachineFrameInfo implementation |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 137 | //===----------------------------------------------------------------------===// |
| 138 | |
Chris Lattner | c6807e8 | 2003-01-13 00:23:03 +0000 | [diff] [blame] | 139 | /// CreateStackObject - Create a stack object for a value of the specified type. |
| 140 | /// |
| 141 | int MachineFrameInfo::CreateStackObject(const Type *Ty, const TargetData &TD) { |
| 142 | return CreateStackObject(TD.getTypeSize(Ty), TD.getTypeAlignment(Ty)); |
| 143 | } |
| 144 | |
| 145 | int MachineFrameInfo::CreateStackObject(const TargetRegisterClass *RC) { |
| 146 | return CreateStackObject(RC->getSize(), RC->getAlignment()); |
| 147 | } |
| 148 | |
| 149 | |
Chris Lattner | eb45c98 | 2003-01-16 18:35:57 +0000 | [diff] [blame] | 150 | void MachineFrameInfo::print(const MachineFunction &MF, std::ostream &OS) const{ |
| 151 | int ValOffset = MF.getTarget().getFrameInfo().getOffsetOfLocalArea(); |
| 152 | |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 153 | for (unsigned i = 0, e = Objects.size(); i != e; ++i) { |
| 154 | const StackObject &SO = Objects[i]; |
Chris Lattner | c6807e8 | 2003-01-13 00:23:03 +0000 | [diff] [blame] | 155 | OS << " <fi #" << (int)(i-NumFixedObjects) << "> is "; |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 156 | if (SO.Size == 0) |
| 157 | OS << "variable sized"; |
| 158 | else |
| 159 | OS << SO.Size << " byte" << (SO.Size != 1 ? "s" : " "); |
| 160 | |
| 161 | if (i < NumFixedObjects) |
| 162 | OS << " fixed"; |
| 163 | if (i < NumFixedObjects || SO.SPOffset != -1) { |
Chris Lattner | eb45c98 | 2003-01-16 18:35:57 +0000 | [diff] [blame] | 164 | int Off = SO.SPOffset + ValOffset; |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 165 | OS << " at location [SP"; |
Chris Lattner | eb45c98 | 2003-01-16 18:35:57 +0000 | [diff] [blame] | 166 | if (Off > 0) |
| 167 | OS << "+" << Off; |
| 168 | else if (Off < 0) |
| 169 | OS << Off; |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 170 | OS << "]"; |
| 171 | } |
| 172 | OS << "\n"; |
| 173 | } |
| 174 | |
| 175 | if (HasVarSizedObjects) |
| 176 | OS << " Stack frame contains variable sized objects\n"; |
| 177 | } |
| 178 | |
Chris Lattner | eb45c98 | 2003-01-16 18:35:57 +0000 | [diff] [blame] | 179 | void MachineFrameInfo::dump(const MachineFunction &MF) const { |
| 180 | print(MF, std::cerr); |
| 181 | } |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 182 | |
| 183 | |
| 184 | //===----------------------------------------------------------------------===// |
Chris Lattner | c6807e8 | 2003-01-13 00:23:03 +0000 | [diff] [blame] | 185 | // MachineConstantPool implementation |
| 186 | //===----------------------------------------------------------------------===// |
| 187 | |
| 188 | void MachineConstantPool::print(std::ostream &OS) const { |
| 189 | for (unsigned i = 0, e = Constants.size(); i != e; ++i) |
| 190 | OS << " <cp #" << i << "> is" << *(Value*)Constants[i] << "\n"; |
| 191 | } |
| 192 | |
| 193 | void MachineConstantPool::dump() const { print(std::cerr); } |
| 194 | |
| 195 | //===----------------------------------------------------------------------===// |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 196 | // MachineFunctionInfo implementation |
| 197 | //===----------------------------------------------------------------------===// |
Chris Lattner | 448fb45 | 2002-12-25 05:03:22 +0000 | [diff] [blame] | 198 | |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 199 | static unsigned |
Vikram S. Adve | 7092772 | 2002-04-25 04:30:43 +0000 | [diff] [blame] | 200 | ComputeMaxOptionalArgsSize(const TargetMachine& target, const Function *F, |
| 201 | unsigned &maxOptionalNumArgs) |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 202 | { |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 203 | const TargetFrameInfo &frameInfo = target.getFrameInfo(); |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 204 | |
Chris Lattner | 7076ff2 | 2002-06-25 16:13:21 +0000 | [diff] [blame] | 205 | unsigned maxSize = 0; |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 206 | |
Chris Lattner | 7076ff2 | 2002-06-25 16:13:21 +0000 | [diff] [blame] | 207 | for (Function::const_iterator BB = F->begin(), BBE = F->end(); BB !=BBE; ++BB) |
| 208 | for (BasicBlock::const_iterator I = BB->begin(), E = BB->end(); I != E; ++I) |
Chris Lattner | 6ee2cf5 | 2003-04-23 16:36:11 +0000 | [diff] [blame] | 209 | if (const CallInst *callInst = dyn_cast<CallInst>(I)) |
Chris Lattner | 7076ff2 | 2002-06-25 16:13:21 +0000 | [diff] [blame] | 210 | { |
| 211 | unsigned numOperands = callInst->getNumOperands() - 1; |
| 212 | int numExtra = (int)numOperands-frameInfo.getNumFixedOutgoingArgs(); |
| 213 | if (numExtra <= 0) |
| 214 | continue; |
| 215 | |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 216 | unsigned sizeForThisCall; |
Chris Lattner | 7076ff2 | 2002-06-25 16:13:21 +0000 | [diff] [blame] | 217 | if (frameInfo.argsOnStackHaveFixedSize()) |
| 218 | { |
| 219 | int argSize = frameInfo.getSizeOfEachArgOnStack(); |
| 220 | sizeForThisCall = numExtra * (unsigned) argSize; |
| 221 | } |
| 222 | else |
| 223 | { |
| 224 | assert(0 && "UNTESTED CODE: Size per stack argument is not " |
| 225 | "fixed on this architecture: use actual arg sizes to " |
| 226 | "compute MaxOptionalArgsSize"); |
| 227 | sizeForThisCall = 0; |
| 228 | for (unsigned i = 0; i < numOperands; ++i) |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 229 | sizeForThisCall += target.getTargetData().getTypeSize(callInst-> |
Chris Lattner | 7076ff2 | 2002-06-25 16:13:21 +0000 | [diff] [blame] | 230 | getOperand(i)->getType()); |
| 231 | } |
| 232 | |
| 233 | if (maxSize < sizeForThisCall) |
| 234 | maxSize = sizeForThisCall; |
| 235 | |
| 236 | if ((int)maxOptionalNumArgs < numExtra) |
| 237 | maxOptionalNumArgs = (unsigned) numExtra; |
| 238 | } |
Vikram S. Adve | 7446b32 | 2002-03-18 03:36:30 +0000 | [diff] [blame] | 239 | |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 240 | return maxSize; |
| 241 | } |
| 242 | |
| 243 | // Align data larger than one L1 cache line on L1 cache line boundaries. |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 244 | // Align all smaller data on the next higher 2^x boundary (4, 8, ...), |
| 245 | // but not higher than the alignment of the largest type we support |
| 246 | // (currently a double word). -- see class TargetData). |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 247 | // |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 248 | // This function is similar to the corresponding function in EmitAssembly.cpp |
| 249 | // but they are unrelated. This one does not align at more than a |
| 250 | // double-word boundary whereas that one might. |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 251 | // |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 252 | inline unsigned |
| 253 | SizeToAlignment(unsigned size, const TargetMachine& target) |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 254 | { |
| 255 | unsigned short cacheLineSize = target.getCacheInfo().getCacheLineSize(1); |
| 256 | if (size > (unsigned) cacheLineSize / 2) |
| 257 | return cacheLineSize; |
| 258 | else |
| 259 | for (unsigned sz=1; /*no condition*/; sz *= 2) |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 260 | if (sz >= size || sz >= target.getTargetData().getDoubleAlignment()) |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 261 | return sz; |
| 262 | } |
| 263 | |
| 264 | |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 265 | void MachineFunctionInfo::CalculateArgSize() { |
| 266 | maxOptionalArgsSize = ComputeMaxOptionalArgsSize(MF.getTarget(), |
| 267 | MF.getFunction(), |
Vikram S. Adve | 7092772 | 2002-04-25 04:30:43 +0000 | [diff] [blame] | 268 | maxOptionalNumArgs); |
Vikram S. Adve | 7446b32 | 2002-03-18 03:36:30 +0000 | [diff] [blame] | 269 | staticStackSize = maxOptionalArgsSize |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 270 | + MF.getTarget().getFrameInfo().getMinStackFrameSize(); |
Vikram S. Adve | 7446b32 | 2002-03-18 03:36:30 +0000 | [diff] [blame] | 271 | } |
| 272 | |
| 273 | int |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 274 | MachineFunctionInfo::computeOffsetforLocalVar(const Value* val, |
| 275 | unsigned &getPaddedSize, |
| 276 | unsigned sizeToUse) |
Vikram S. Adve | 7446b32 | 2002-03-18 03:36:30 +0000 | [diff] [blame] | 277 | { |
Vikram S. Adve | 377646f | 2002-03-24 03:39:26 +0000 | [diff] [blame] | 278 | if (sizeToUse == 0) |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 279 | sizeToUse = MF.getTarget().findOptimalStorageSize(val->getType()); |
| 280 | unsigned align = SizeToAlignment(sizeToUse, MF.getTarget()); |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 281 | |
| 282 | bool growUp; |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 283 | int firstOffset = MF.getTarget().getFrameInfo().getFirstAutomaticVarOffset(MF, |
| 284 | growUp); |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 285 | int offset = growUp? firstOffset + getAutomaticVarsSize() |
| 286 | : firstOffset - (getAutomaticVarsSize() + sizeToUse); |
| 287 | |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 288 | int aligned = MF.getTarget().getFrameInfo().adjustAlignment(offset, growUp, align); |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 289 | getPaddedSize = sizeToUse + abs(aligned - offset); |
| 290 | |
| 291 | return aligned; |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 292 | } |
| 293 | |
Chris Lattner | 9a3478e | 2003-12-20 09:17:07 +0000 | [diff] [blame^] | 294 | |
| 295 | int MachineFunctionInfo::allocateLocalVar(const Value* val, |
| 296 | unsigned sizeToUse) { |
Vikram S. Adve | 7092772 | 2002-04-25 04:30:43 +0000 | [diff] [blame] | 297 | assert(! automaticVarsAreaFrozen && |
| 298 | "Size of auto vars area has been used to compute an offset so " |
| 299 | "no more automatic vars should be allocated!"); |
| 300 | |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 301 | // Check if we've allocated a stack slot for this value already |
| 302 | // |
Chris Lattner | 9a3478e | 2003-12-20 09:17:07 +0000 | [diff] [blame^] | 303 | hash_map<const Value*, int>::const_iterator pair = offsets.find(val); |
| 304 | if (pair != offsets.end()) |
| 305 | return pair->second; |
| 306 | |
| 307 | unsigned getPaddedSize; |
| 308 | unsigned offset = computeOffsetforLocalVar(val, getPaddedSize, sizeToUse); |
| 309 | offsets[val] = offset; |
| 310 | incrementAutomaticVarsSize(getPaddedSize); |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 311 | return offset; |
| 312 | } |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 313 | |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 314 | int |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 315 | MachineFunctionInfo::allocateSpilledValue(const Type* type) |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 316 | { |
Vikram S. Adve | 7092772 | 2002-04-25 04:30:43 +0000 | [diff] [blame] | 317 | assert(! spillsAreaFrozen && |
| 318 | "Size of reg spills area has been used to compute an offset so " |
| 319 | "no more register spill slots should be allocated!"); |
| 320 | |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 321 | unsigned size = MF.getTarget().getTargetData().getTypeSize(type); |
| 322 | unsigned char align = MF.getTarget().getTargetData().getTypeAlignment(type); |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 323 | |
| 324 | bool growUp; |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 325 | int firstOffset = MF.getTarget().getFrameInfo().getRegSpillAreaOffset(MF, growUp); |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 326 | |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 327 | int offset = growUp? firstOffset + getRegSpillsSize() |
| 328 | : firstOffset - (getRegSpillsSize() + size); |
| 329 | |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 330 | int aligned = MF.getTarget().getFrameInfo().adjustAlignment(offset, growUp, align); |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 331 | size += abs(aligned - offset); // include alignment padding in size |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 332 | |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 333 | incrementRegSpillsSize(size); // update size of reg. spills area |
| 334 | |
| 335 | return aligned; |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 336 | } |
| 337 | |
| 338 | int |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 339 | MachineFunctionInfo::pushTempValue(unsigned size) |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 340 | { |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 341 | unsigned align = SizeToAlignment(size, MF.getTarget()); |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 342 | |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 343 | bool growUp; |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 344 | int firstOffset = MF.getTarget().getFrameInfo().getTmpAreaOffset(MF, growUp); |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 345 | |
| 346 | int offset = growUp? firstOffset + currentTmpValuesSize |
| 347 | : firstOffset - (currentTmpValuesSize + size); |
| 348 | |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 349 | int aligned = MF.getTarget().getFrameInfo().adjustAlignment(offset, growUp, |
| 350 | align); |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 351 | size += abs(aligned - offset); // include alignment padding in size |
| 352 | |
| 353 | incrementTmpAreaSize(size); // update "current" size of tmp area |
| 354 | |
| 355 | return aligned; |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 356 | } |
| 357 | |
Chris Lattner | 3252564 | 2002-12-28 20:37:16 +0000 | [diff] [blame] | 358 | void MachineFunctionInfo::popAllTempValues() { |
Vikram S. Adve | e567179 | 2002-09-16 15:18:16 +0000 | [diff] [blame] | 359 | resetTmpAreaSize(); // clear tmp area to reuse |
Chris Lattner | eda6bd7 | 2002-02-03 07:54:50 +0000 | [diff] [blame] | 360 | } |
| 361 | |