Imported Upstream version 5.18.0.225

Former-commit-id: 10196d987d5fc5564b9d3b33b1fdf13190f4d0b5

external/llvm/lib/Target/Mips/MCTargetDesc/MipsELFStreamer.cpp

@@ -0,0 +1,97 @@
+//===-------- MipsELFStreamer.cpp - ELF Object Output ---------------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MipsELFStreamer.h"
+#include "MipsOptionRecord.h"
+#include "MipsTargetStreamer.h"
+#include "llvm/BinaryFormat/ELF.h"
+#include "llvm/MC/MCAsmBackend.h"
+#include "llvm/MC/MCAssembler.h"
+#include "llvm/MC/MCCodeEmitter.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/MC/MCSymbolELF.h"
+#include "llvm/Support/Casting.h"
+
+using namespace llvm;
+
+MipsELFStreamer::MipsELFStreamer(MCContext &Context,
+                                 std::unique_ptr<MCAsmBackend> MAB,
+                                 raw_pwrite_stream &OS,
+                                 std::unique_ptr<MCCodeEmitter> Emitter)
+    : MCELFStreamer(Context, std::move(MAB), OS, std::move(Emitter)) {
+  RegInfoRecord = new MipsRegInfoRecord(this, Context);
+  MipsOptionRecords.push_back(
+      std::unique_ptr<MipsRegInfoRecord>(RegInfoRecord));
+}
+
+void MipsELFStreamer::EmitInstruction(const MCInst &Inst,
+                                      const MCSubtargetInfo &STI, bool) {
+  MCELFStreamer::EmitInstruction(Inst, STI);
+
+  MCContext &Context = getContext();
+  const MCRegisterInfo *MCRegInfo = Context.getRegisterInfo();
+
+  for (unsigned OpIndex = 0; OpIndex < Inst.getNumOperands(); ++OpIndex) {
+    const MCOperand &Op = Inst.getOperand(OpIndex);
+
+    if (!Op.isReg())
+      continue;
+
+    unsigned Reg = Op.getReg();
+    RegInfoRecord->SetPhysRegUsed(Reg, MCRegInfo);
+  }
+
+  createPendingLabelRelocs();
+}
+
+void MipsELFStreamer::createPendingLabelRelocs() {
+  MipsTargetELFStreamer *ELFTargetStreamer =
+      static_cast<MipsTargetELFStreamer *>(getTargetStreamer());
+
+  // FIXME: Also mark labels when in MIPS16 mode.
+  if (ELFTargetStreamer->isMicroMipsEnabled()) {
+    for (auto *L : Labels) {
+      auto *Label = cast<MCSymbolELF>(L);
+      getAssembler().registerSymbol(*Label);
+      Label->setOther(ELF::STO_MIPS_MICROMIPS);
+    }
+  }
+
+  Labels.clear();
+}
+
+void MipsELFStreamer::EmitLabel(MCSymbol *Symbol, SMLoc Loc) {
+  MCELFStreamer::EmitLabel(Symbol);
+  Labels.push_back(Symbol);
+}
+
+void MipsELFStreamer::SwitchSection(MCSection *Section,
+                                    const MCExpr *Subsection) {
+  MCELFStreamer::SwitchSection(Section, Subsection);
+  Labels.clear();
+}
+
+void MipsELFStreamer::EmitValueImpl(const MCExpr *Value, unsigned Size,
+                                    SMLoc Loc) {
+  MCELFStreamer::EmitValueImpl(Value, Size, Loc);
+  Labels.clear();
+}
+
+void MipsELFStreamer::EmitMipsOptionRecords() {
+  for (const auto &I : MipsOptionRecords)
+    I->EmitMipsOptionRecord();
+}
+
+MCELFStreamer *llvm::createMipsELFStreamer(
+    MCContext &Context, std::unique_ptr<MCAsmBackend> MAB,
+    raw_pwrite_stream &OS, std::unique_ptr<MCCodeEmitter> Emitter,
+    bool RelaxAll) {
+  return new MipsELFStreamer(Context, std::move(MAB), OS, std::move(Emitter));
+}