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940b0c036d
This makes sure we get the same redefinition rules regardless of who is printing (asm parser, codegen) and to what (asm, obj). This fixes an unintentional regression in r293936. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@294752 91177308-0d34-0410-b5e6-96231b3b80d8
113 lines
2.8 KiB
C++
113 lines
2.8 KiB
C++
//===-- RecordStreamer.cpp - Record asm definde and used symbols ----------===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "RecordStreamer.h"
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#include "llvm/MC/MCSymbol.h"
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using namespace llvm;
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void RecordStreamer::markDefined(const MCSymbol &Symbol) {
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State &S = Symbols[Symbol.getName()];
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switch (S) {
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case DefinedGlobal:
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case Global:
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S = DefinedGlobal;
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break;
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case NeverSeen:
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case Defined:
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case Used:
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S = Defined;
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break;
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case DefinedWeak:
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break;
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case UndefinedWeak:
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S = DefinedWeak;
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}
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}
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void RecordStreamer::markGlobal(const MCSymbol &Symbol,
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MCSymbolAttr Attribute) {
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State &S = Symbols[Symbol.getName()];
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switch (S) {
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case DefinedGlobal:
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case Defined:
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S = (Attribute == MCSA_Weak) ? DefinedWeak : DefinedGlobal;
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break;
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case NeverSeen:
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case Global:
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case Used:
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S = (Attribute == MCSA_Weak) ? UndefinedWeak : Global;
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break;
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case UndefinedWeak:
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case DefinedWeak:
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break;
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}
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}
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void RecordStreamer::markUsed(const MCSymbol &Symbol) {
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State &S = Symbols[Symbol.getName()];
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switch (S) {
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case DefinedGlobal:
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case Defined:
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case Global:
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case DefinedWeak:
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case UndefinedWeak:
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break;
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case NeverSeen:
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case Used:
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S = Used;
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break;
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}
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}
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void RecordStreamer::visitUsedSymbol(const MCSymbol &Sym) { markUsed(Sym); }
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RecordStreamer::const_iterator RecordStreamer::begin() {
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return Symbols.begin();
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}
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RecordStreamer::const_iterator RecordStreamer::end() { return Symbols.end(); }
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RecordStreamer::RecordStreamer(MCContext &Context) : MCStreamer(Context) {}
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void RecordStreamer::EmitInstruction(const MCInst &Inst,
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const MCSubtargetInfo &STI) {
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MCStreamer::EmitInstruction(Inst, STI);
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}
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void RecordStreamer::EmitLabel(MCSymbol *Symbol, SMLoc Loc) {
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MCStreamer::EmitLabel(Symbol);
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markDefined(*Symbol);
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}
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void RecordStreamer::EmitAssignment(MCSymbol *Symbol, const MCExpr *Value) {
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markDefined(*Symbol);
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MCStreamer::EmitAssignment(Symbol, Value);
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}
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bool RecordStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
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MCSymbolAttr Attribute) {
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if (Attribute == MCSA_Global || Attribute == MCSA_Weak)
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markGlobal(*Symbol, Attribute);
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if (Attribute == MCSA_LazyReference)
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markUsed(*Symbol);
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return true;
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}
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void RecordStreamer::EmitZerofill(MCSection *Section, MCSymbol *Symbol,
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uint64_t Size, unsigned ByteAlignment) {
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markDefined(*Symbol);
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}
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void RecordStreamer::EmitCommonSymbol(MCSymbol *Symbol, uint64_t Size,
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unsigned ByteAlignment) {
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markDefined(*Symbol);
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}
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