1 //===-- DiffLog.h - Difference Log Builder and accessories ------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 // This header defines the interface to the LLVM difference log builder.
12 //===----------------------------------------------------------------------===//
14 #ifndef LLVM_TOOLS_LLVM_DIFF_DIFFLOG_H
15 #define LLVM_TOOLS_LLVM_DIFF_DIFFLOG_H
17 #include "llvm/ADT/SmallVector.h"
18 #include "llvm/ADT/StringRef.h"
25 /// Trichotomy assumption
26 enum DiffChange { DC_match, DC_left, DC_right };
28 /// A temporary-object class for building up log messages.
32 /// The use of a stored StringRef here is okay because
33 /// LogBuilder should be used only as a temporary, and as a
34 /// temporary it will be destructed before whatever temporary
35 /// might be initializing this format.
38 SmallVector<Value*, 4> Arguments;
41 LogBuilder(Consumer &c, StringRef Format) : consumer(&c), Format(Format) {}
42 LogBuilder(LogBuilder &&L)
43 : consumer(L.consumer), Format(L.Format),
44 Arguments(std::move(L.Arguments)) {
48 LogBuilder &operator<<(Value *V) {
49 Arguments.push_back(V);
55 StringRef getFormat() const;
56 unsigned getNumArguments() const;
57 Value *getArgument(unsigned I) const;
60 /// A temporary-object class for building up diff messages.
61 class DiffLogBuilder {
62 typedef std::pair<Instruction*,Instruction*> DiffRecord;
63 SmallVector<DiffRecord, 20> Diff;
68 DiffLogBuilder(Consumer &c) : consumer(c) {}
71 void addMatch(Instruction *L, Instruction *R);
72 // HACK: VS 2010 has a bug in the stdlib that requires this.
73 void addLeft(Instruction *L);
74 void addRight(Instruction *R);
76 unsigned getNumLines() const;
77 DiffChange getLineKind(unsigned I) const;
78 Instruction *getLeft(unsigned I) const;
79 Instruction *getRight(unsigned I) const;