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Issue 837553009: Make fixups reference any constant (allow const float/double pool literals). (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: go back to one arenaallocator type alias Created 5 years, 11 months ago
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1 //===- subzero/src/assembler.h - Integrated assembler -----------*- C++ -*-===// 1 //===- subzero/src/assembler.h - Integrated assembler -----------*- C++ -*-===//
2 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file 2 // Copyright (c) 2012, the Dart project authors. Please see the AUTHORS file
3 // for details. All rights reserved. Use of this source code is governed by a 3 // for details. All rights reserved. Use of this source code is governed by a
4 // BSD-style license that can be found in the LICENSE file. 4 // BSD-style license that can be found in the LICENSE file.
5 // 5 //
6 // Modified by the Subzero authors. 6 // Modified by the Subzero authors.
7 // 7 //
8 //===----------------------------------------------------------------------===// 8 //===----------------------------------------------------------------------===//
9 // 9 //
10 // The Subzero Code Generator 10 // The Subzero Code Generator
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44 public: 44 public:
45 45
46 // It would be ideal if the destructor method could be made private, 46 // It would be ideal if the destructor method could be made private,
47 // but the g++ compiler complains when this is subclassed. 47 // but the g++ compiler complains when this is subclassed.
48 virtual ~AssemblerFixup() { llvm_unreachable("~AssemblerFixup used"); } 48 virtual ~AssemblerFixup() { llvm_unreachable("~AssemblerFixup used"); }
49 49
50 intptr_t position() const { return position_; } 50 intptr_t position() const { return position_; }
51 51
52 FixupKind kind() const { return kind_; } 52 FixupKind kind() const { return kind_; }
53 53
54 const ConstantRelocatable *value() const { return value_; } 54 RelocOffsetT offset() const;
55
56 IceString symbol(GlobalContext *Ctx) const;
57
58 void emit(GlobalContext *Ctx) const;
55 59
56 protected: 60 protected:
57 AssemblerFixup(FixupKind Kind, const ConstantRelocatable *Value) 61 AssemblerFixup(FixupKind Kind, const Constant *Value)
58 : position_(0), kind_(Kind), value_(Value) {} 62 : position_(0), kind_(Kind), value_(Value) {}
59 63
60 private: 64 private:
61 intptr_t position_; 65 intptr_t position_;
62 FixupKind kind_; 66 FixupKind kind_;
63 const ConstantRelocatable *value_; 67 const Constant *value_;
64 68
65 void set_position(intptr_t position) { position_ = position; } 69 void set_position(intptr_t position) { position_ = position; }
66 70
67 friend class AssemblerBuffer; 71 friend class AssemblerBuffer;
68 }; 72 };
69 73
70 // Assembler buffers are used to emit binary code. They grow on demand. 74 // Assembler buffers are used to emit binary code. They grow on demand.
71 class AssemblerBuffer { 75 class AssemblerBuffer {
72 AssemblerBuffer(const AssemblerBuffer &) = delete; 76 AssemblerBuffer(const AssemblerBuffer &) = delete;
73 AssemblerBuffer &operator=(const AssemblerBuffer &) = delete; 77 AssemblerBuffer &operator=(const AssemblerBuffer &) = delete;
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223 // Mark the current text location as the start of a CFG node 227 // Mark the current text location as the start of a CFG node
224 // (represented by NodeNumber). 228 // (represented by NodeNumber).
225 virtual void BindCfgNodeLabel(SizeT NodeNumber) = 0; 229 virtual void BindCfgNodeLabel(SizeT NodeNumber) = 0;
226 230
227 // Return a view of all the bytes of code for the current function. 231 // Return a view of all the bytes of code for the current function.
228 llvm::StringRef getBufferView() const; 232 llvm::StringRef getBufferView() const;
229 233
230 void emitIASBytes(GlobalContext *Ctx) const; 234 void emitIASBytes(GlobalContext *Ctx) const;
231 235
232 private: 236 private:
233 ArenaAllocator Allocator; 237 ArenaAllocator<32 * 1024> Allocator;
234 238
235 protected: 239 protected:
236 AssemblerBuffer buffer_; 240 AssemblerBuffer buffer_;
237 }; 241 };
238 242
239 } // end of namespace Ice 243 } // end of namespace Ice
240 244
241 #endif // SUBZERO_SRC_ASSEMBLER_H_ 245 #endif // SUBZERO_SRC_ASSEMBLER_H_
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