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https://github.com/c64scene-ar/llvm-6502.git
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7521964d28
This starts merging MCSection and MCSectionData. There are a few issues with the current split between MCSection and MCSectionData. * It optimizes the the not as important case. We want the production of .o files to be really fast, but the split puts the information used for .o emission in a separate data structure. * The ELF/COFF/MachO hierarchy is not represented in MCSectionData, leading to some ad-hoc ways to represent the various flags. * It makes it harder to remember where each item is. The attached patch starts merging the two by moving the alignment from MCSectionData to MCSection. Most of the patch is actually just dropping 'const', since MCSectionData is mutable, but MCSection was not. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@237936 91177308-0d34-0410-b5e6-96231b3b80d8
101 lines
2.4 KiB
C++
101 lines
2.4 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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}
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}
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void RecordStreamer::markGlobal(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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S = 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 = Global;
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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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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) {
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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)
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markGlobal(*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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