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"
12 using namespace llvm;
13
markDefined(const MCSymbol & Symbol)14 void 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
markGlobal(const MCSymbol & Symbol)29 void 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
markUsed(const MCSymbol & Symbol)45 void 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
visitUsedSymbol(const MCSymbol & Sym)60 void RecordStreamer::visitUsedSymbol(const MCSymbol &Sym) { markUsed(Sym); }
61
begin()62 RecordStreamer::const_iterator RecordStreamer::begin() {
63 return Symbols.begin();
64 }
65
end()66 RecordStreamer::const_iterator RecordStreamer::end() { return Symbols.end(); }
67
RecordStreamer(MCContext & Context)68 RecordStreamer::RecordStreamer(MCContext &Context) : MCStreamer(Context) {}
69
EmitInstruction(const MCInst & Inst,const MCSubtargetInfo & STI)70 void RecordStreamer::EmitInstruction(const MCInst &Inst,
71 const MCSubtargetInfo &STI) {
72 MCStreamer::EmitInstruction(Inst, STI);
73 }
74
EmitLabel(MCSymbol * Symbol)75 void RecordStreamer::EmitLabel(MCSymbol *Symbol) {
76 MCStreamer::EmitLabel(Symbol);
77 markDefined(*Symbol);
78 }
79
EmitAssignment(MCSymbol * Symbol,const MCExpr * Value)80 void RecordStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
81 markDefined(*Symbol);
82 MCStreamer::EmitAssignment(Symbol, Value);
83 }
84
EmitSymbolAttribute(MCSymbol * Symbol,MCSymbolAttr Attribute)85 bool RecordStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
86 MCSymbolAttr Attribute) {
87 if (Attribute == MCSA_Global)
88 markGlobal(*Symbol);
89 return true;
90 }
91
EmitZerofill(const MCSection * Section,MCSymbol * Symbol,uint64_t Size,unsigned ByteAlignment)92 void RecordStreamer::EmitZerofill(const MCSection *Section, MCSymbol *Symbol,
93 uint64_t Size, unsigned ByteAlignment) {
94 markDefined(*Symbol);
95 }
96
EmitCommonSymbol(MCSymbol * Symbol,uint64_t Size,unsigned ByteAlignment)97 void RecordStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
98 unsigned ByteAlignment) {
99 markDefined(*Symbol);
100 }
101