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| 1 //===- subzero/src/IceGlobalInits.cpp - Global initializers ---------------===// |
| 2 // |
| 3 // The Subzero Code Generator |
| 4 // |
| 5 // This file is distributed under the University of Illinois Open Source |
| 6 // License. See LICENSE.TXT for details. |
| 7 // |
| 8 //===----------------------------------------------------------------------===// |
| 9 // |
| 10 // This file implements the notion of global addresses and |
| 11 // initializers in Subzero. |
| 12 // |
| 13 //===----------------------------------------------------------------------===// |
| 14 |
| 15 #include "llvm/ADT/STLExtras.h" |
| 16 #include "llvm/IR/Function.h" |
| 17 #include "llvm/IR/Value.h" |
| 18 |
| 19 #include "IceDefs.h" |
| 20 #include "IceGlobalInits.h" |
| 21 #include "IceTypes.h" |
| 22 |
| 23 namespace { |
| 24 char hexdigit(unsigned X) { return X < 10 ? '0' + X : 'A' + X - 10; } |
| 25 } |
| 26 |
| 27 namespace Ice { |
| 28 |
| 29 GlobalAddress::~GlobalAddress() { llvm::DeleteContainerPointers(Initializers); } |
| 30 |
| 31 void GlobalAddress::dumpType(Ostream &Stream) const { |
| 32 if (Initializers.size() == 1) { |
| 33 Initializers.front()->dumpType(Stream); |
| 34 } else { |
| 35 Stream << "<{ "; |
| 36 bool IsFirst = true; |
| 37 for (Initializer *Init : Initializers) { |
| 38 if (IsFirst) { |
| 39 IsFirst = false; |
| 40 } else { |
| 41 Stream << ", "; |
| 42 } |
| 43 Init->dumpType(Stream); |
| 44 } |
| 45 Stream << " }>"; |
| 46 } |
| 47 } |
| 48 |
| 49 void GlobalAddress::dump(Ostream &Stream) const { |
| 50 Stream << "@" << getName() << " = internal " |
| 51 << (IsConstant ? "constant" : "global") << " "; |
| 52 |
| 53 // Add initializer. |
| 54 if (Initializers.size() == 1) { |
| 55 Initializers.front()->dump(Stream); |
| 56 } else { |
| 57 dumpType(Stream); |
| 58 Stream << " <{ "; |
| 59 bool IsFirst = true; |
| 60 for (Initializer *Init : Initializers) { |
| 61 if (IsFirst) { |
| 62 IsFirst = false; |
| 63 } else { |
| 64 Stream << ", "; |
| 65 } |
| 66 Init->dump(Stream); |
| 67 } |
| 68 Stream << " }>"; |
| 69 } |
| 70 |
| 71 // Add alignment. |
| 72 if (Alignment > 0) |
| 73 Stream << ", align " << Alignment; |
| 74 Stream << "\n"; |
| 75 } |
| 76 |
| 77 void GlobalAddress::Initializer::dumpType(Ostream &Stream) const { |
| 78 Stream << "[" << getNumBytes() << " x " << Ice::IceType_i8 << "]"; |
| 79 } |
| 80 |
| 81 void GlobalAddress::DataInitializer::dump(Ostream &Stream) const { |
| 82 dumpType(Stream); |
| 83 Stream << " c\""; |
| 84 // Code taken from PrintEscapedString() in AsmWriter.cpp. Keep |
| 85 // the strings in the same format as the .ll file for practical |
| 86 // diffing. |
| 87 for (uint8_t C : Contents) { |
| 88 if (isprint(C) && C != '\\' && C != '"') |
| 89 Stream << C; |
| 90 else |
| 91 Stream << '\\' << hexdigit(C >> 4) << hexdigit(C & 0x0F); |
| 92 } |
| 93 Stream << "\""; |
| 94 } |
| 95 |
| 96 void GlobalAddress::ZeroInitializer::dump(Ostream &Stream) const { |
| 97 dumpType(Stream); |
| 98 Stream << " zeroinitializer"; |
| 99 } |
| 100 |
| 101 IceString GlobalAddress::RelocInitializer::getName() const { |
| 102 switch (Address.getKind()) { |
| 103 case FunctionRelocation: |
| 104 return Address.getFunction()->getName(); |
| 105 case GlobalAddressRelocation: |
| 106 return Address.getGlobalAddr()->getName(); |
| 107 default: |
| 108 llvm::report_fatal_error("Malformed relocation address!"); |
| 109 } |
| 110 } |
| 111 |
| 112 void GlobalAddress::RelocInitializer::dumpType(Ostream &Stream) const { |
| 113 Stream << Ice::IceType_i32; |
| 114 } |
| 115 |
| 116 void GlobalAddress::RelocInitializer::dump(Ostream &Stream) const { |
| 117 if (Offset != 0) { |
| 118 dumpType(Stream); |
| 119 Stream << " add ("; |
| 120 } |
| 121 dumpType(Stream); |
| 122 Stream << " ptrtoint ("; |
| 123 if (Address.getKind() == FunctionRelocation) { |
| 124 Stream << *Address.getFunction()->getType() << " @" |
| 125 << Address.getFunction()->getName(); |
| 126 } else { |
| 127 Address.getGlobalAddr()->dumpType(Stream); |
| 128 Stream << "* @" << Address.getGlobalAddr()->getName(); |
| 129 } |
| 130 Stream << " to "; |
| 131 dumpType(Stream); |
| 132 Stream << ")"; |
| 133 if (Offset != 0) { |
| 134 Stream << ", "; |
| 135 dumpType(Stream); |
| 136 Stream << " " << Offset << ")"; |
| 137 } |
| 138 } |
| 139 } |
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