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Side by Side Diff: src/IceTranslator.h

Issue 361733002: Update Subzero to start parsing PNaCl bitcode files. (Closed) Base URL: https://chromium.googlesource.com/native_client/pnacl-subzero.git@master
Patch Set: Reformat IceConverter.cpp Created 6 years, 5 months ago
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1 //===- subzero/src/IceTranslator.h - ICE to machine code --------*- C++ -*-===//
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 declares the general driver class for translating ICE to
11 // machine code.
12 //
13 //===----------------------------------------------------------------------===//
14
15 #ifndef SUBZERO_SRC_ICETRANSLATOR_H
16 #define SUBZERO_SRC_ICETRANSLATOR_H
17
18 #include "llvm/ADT/OwningPtr.h"
19
20 namespace Ice {
21
22 class ClFlags;
23 class Cfg;
24 class GlobalContext;
25
26 // Base class for translating ICE to machine code.
27 // Derived classes convert other intermediate representations down to ICE,
28 // and then call the appropriate (inherited) methods to convert ICE into
29 // machine instructions.
30 class Translator {
31 public:
32 Translator(GlobalContext *Ctx, ClFlags &Flags)
33 : Ctx(Ctx), Flags(Flags), ExitStatus(0) {}
34
35 ~Translator();
36 int getExitStatus() const { return ExitStatus; }
37
38 protected:
39 GlobalContext *Ctx;
40 ClFlags &Flags;
41 // The exit status of the translation. 0 is successful. Nonzero
42 // otherwise.
43 bool ExitStatus;
44 // Ideally, Func would be inside the methods that converts IR to
45 // functions. However, emitting the constant pool requires a valid
46 // Cfg object, so we need to defer deleting the last non-empty Cfg
47 // object to emit the constant pool (via emitConstants). TODO:
48 // Since all constants are globally pooled in the GlobalContext
49 // object, change all Constant related functions to use
50 // GlobalContext instead of Cfg, and then make emitConstantPool use
51 // that.
52 llvm::OwningPtr<Cfg> Func;
53
54 /// Translates the constructed ICE function Fcn to machine code.
55 /// Note: As a side effect, Field Func is set to Fcn.
56 void translateFcn(Cfg *Fcn);
57
58 /// Emits the constant pool.
59 void emitConstants();
60
61 private:
62 Translator(const Translator &) LLVM_DELETED_FUNCTION;
63 Translator &operator=(const Translator &) LLVM_DELETED_FUNCTION;
64 };
65 }
66
67 #endif // SUBZERO_SRC_ICETRANSLATOR_H
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