Imported Upstream version 5.18.0.161

Former-commit-id: 4db48158d3a35497b8f118ab21b5f08ac3d86d98

external/llvm/lib/CodeGen/AsmPrinter/AddressPool.cpp

@@ -0,0 +1,46 @@
+//===- llvm/CodeGen/AddressPool.cpp - Dwarf Debug Framework ---------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "AddressPool.h"
+#include "llvm/ADT/SmallVector.h"
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/TargetLoweringObjectFile.h"
+#include "llvm/IR/DataLayout.h"
+#include "llvm/MC/MCStreamer.h"
+#include <utility>
+
+using namespace llvm;
+
+unsigned AddressPool::getIndex(const MCSymbol *Sym, bool TLS) {
+  HasBeenUsed = true;
+  auto IterBool =
+      Pool.insert(std::make_pair(Sym, AddressPoolEntry(Pool.size(), TLS)));
+  return IterBool.first->second.Number;
+}
+
+// Emit addresses into the section given.
+void AddressPool::emit(AsmPrinter &Asm, MCSection *AddrSection) {
+  if (Pool.empty())
+    return;
+
+  // Start the dwarf addr section.
+  Asm.OutStreamer->SwitchSection(AddrSection);
+
+  // Order the address pool entries by ID
+  SmallVector<const MCExpr *, 64> Entries(Pool.size());
+
+  for (const auto &I : Pool)
+    Entries[I.second.Number] =
+        I.second.TLS
+            ? Asm.getObjFileLowering().getDebugThreadLocalSymbol(I.first)
+            : MCSymbolRefExpr::create(I.first, Asm.OutContext);
+
+  for (const MCExpr *Entry : Entries)
+    Asm.OutStreamer->EmitValue(Entry, Asm.getDataLayout().getPointerSize());
+}