1//===-- RecordStreamer.cpp - Record asm definde and used symbols ----------===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#include "RecordStreamer.h"
11#include "llvm/MC/MCSymbol.h"
12using namespace llvm;
13
14void RecordStreamer::markDefined(const MCSymbol &Symbol) {
15  State &S = Symbols[Symbol.getName()];
16  switch (S) {
17  case DefinedGlobal:
18  case Global:
19    S = DefinedGlobal;
20    break;
21  case NeverSeen:
22  case Defined:
23  case Used:
24    S = Defined;
25    break;
26  }
27}
28
29void RecordStreamer::markGlobal(const MCSymbol &Symbol) {
30  State &S = Symbols[Symbol.getName()];
31  switch (S) {
32  case DefinedGlobal:
33  case Defined:
34    S = DefinedGlobal;
35    break;
36
37  case NeverSeen:
38  case Global:
39  case Used:
40    S = Global;
41    break;
42  }
43}
44
45void RecordStreamer::markUsed(const MCSymbol &Symbol) {
46  State &S = Symbols[Symbol.getName()];
47  switch (S) {
48  case DefinedGlobal:
49  case Defined:
50  case Global:
51    break;
52
53  case NeverSeen:
54  case Used:
55    S = Used;
56    break;
57  }
58}
59
60void RecordStreamer::visitUsedSymbol(const MCSymbol &Sym) { markUsed(Sym); }
61
62RecordStreamer::const_iterator RecordStreamer::begin() {
63  return Symbols.begin();
64}
65
66RecordStreamer::const_iterator RecordStreamer::end() { return Symbols.end(); }
67
68RecordStreamer::RecordStreamer(MCContext &Context) : MCStreamer(Context) {}
69
70void RecordStreamer::EmitInstruction(const MCInst &Inst,
71                                     const MCSubtargetInfo &STI) {
72  MCStreamer::EmitInstruction(Inst, STI);
73}
74
75void RecordStreamer::EmitLabel(MCSymbol *Symbol) {
76  MCStreamer::EmitLabel(Symbol);
77  markDefined(*Symbol);
78}
79
80void RecordStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
81  markDefined(*Symbol);
82  MCStreamer::EmitAssignment(Symbol, Value);
83}
84
85bool RecordStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
86                                         MCSymbolAttr Attribute) {
87  if (Attribute == MCSA_Global)
88    markGlobal(*Symbol);
89  return true;
90}
91
92void RecordStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
93                                  uint64_t Size, unsigned ByteAlignment) {
94  markDefined(*Symbol);
95}
96
97void RecordStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
98                                      unsigned ByteAlignment) {
99  markDefined(*Symbol);
100}
101