Support standard DWARF TLS opcode; Darwin and PS4 use it.

[oota-llvm.git] / lib / CodeGen / AsmPrinter / DwarfDebug.h

diff --git a/lib/CodeGen/AsmPrinter/DwarfDebug.h b/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 4755c9cd1b955020f7761de3d6960a3fb41e88bc..d1137297b3bcbaea2985210808c6547671f9ee3e 100644 (file)
--- a/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -68,8 +68,8 @@ public:
 //===----------------------------------------------------------------------===//
 /// \brief This class is used to track local variable information.
 ///
-/// - Variables whose location changes over time have a DotDebugLocOffset and the
-///   other fields are not used.
+/// - Variables whose location changes over time have a DotDebugLocOffset and
+///   the other fields are not used.
 ///
 /// - Variables that are described by multiple MMI table entries have multiple
 ///   expressions and frame indices.
@@ -94,8 +94,9 @@ public:
   /// Construct a DbgVariable from a DEBUG_VALUE.
   /// AbstractVar may be NULL.
   DbgVariable(const MachineInstr *DbgValue, DwarfDebug *DD)
-    : Var(DbgValue->getDebugVariable()), Expr(1, DbgValue->getDebugExpression()),
-        TheDIE(nullptr), DotDebugLocOffset(~0U), MInsn(DbgValue), DD(DD) {
+      : Var(DbgValue->getDebugVariable()),
+        Expr(1, DbgValue->getDebugExpression()), TheDIE(nullptr),
+        DotDebugLocOffset(~0U), MInsn(DbgValue), DD(DD) {
     FrameIndex.push_back(~0);
   }
 
@@ -200,10 +201,6 @@ class DwarfDebug : public AsmPrinterHandler {
   // Size of each symbol emitted (for those symbols that have a specific size).
   DenseMap<const MCSymbol *, uint64_t> SymSize;
 
-  // Provides a unique id per text section.
-  typedef DenseMap<const MCSection *, SmallVector<SymbolCU, 8> > SectionMapType;
-  SectionMapType SectionMap;
-
   LexicalScopes LScopes;
 
   // Collection of abstract variables.
@@ -280,7 +277,8 @@ class DwarfDebug : public AsmPrinterHandler {
   // them.
   DenseMap<const MDNode *, const DwarfTypeUnit *> DwarfTypeUnits;
 
-  SmallVector<std::pair<std::unique_ptr<DwarfTypeUnit>, DICompositeType>, 1> TypeUnitsUnderConstruction;
+  SmallVector<std::pair<std::unique_ptr<DwarfTypeUnit>, DICompositeType>, 1>
+      TypeUnitsUnderConstruction;
 
   // Whether to emit the pubnames/pubtypes sections.
   bool HasDwarfPubSections;
@@ -292,6 +290,9 @@ class DwarfDebug : public AsmPrinterHandler {
   // text.
   bool UsedNonDefaultText;
 
+  // Whether to use the GNU TLS opcode (instead of the standard opcode).
+  bool UseGNUTLSOpcode;
+
   // Version of dwarf we're emitting.
   unsigned DwarfVersion;
 
@@ -320,6 +321,7 @@ class DwarfDebug : public AsmPrinterHandler {
   // True iff there are multiple CUs in this module.
   bool SingleCU;
   bool IsDarwin;
+  bool IsPS4;
 
   AddressPool AddrPool;
 
@@ -369,10 +371,6 @@ class DwarfDebug : public AsmPrinterHandler {
   /// processed.
   void finalizeModuleInfo();
 
-  /// \brief Emit labels to close any remaining sections that have been left
-  /// open.
-  void endSections();
-
   /// \brief Emit the debug info section.
   void emitDebugInfo();
 
@@ -546,8 +544,9 @@ public:
     SymSize[Sym] = Size;
   }
 
-  /// \brief Recursively Emits a debug information entry.
-  void emitDIE(DIE &Die);
+  /// \brief Returns whether to use DW_OP_GNU_push_tls_address, instead of the
+  /// standard DW_OP_form_tls_address opcode
+  bool useGNUTLSOpcode() const { return UseGNUTLSOpcode; }
 
   // Experimental DWARF5 features.
 
@@ -583,7 +582,8 @@ public:
 
   /// \brief Emit an entry for the debug loc section. This can be used to
   /// handle an entry that's going to be emitted into the debug loc section.
-  void emitDebugLocEntry(ByteStreamer &Streamer, const DebugLocEntry &Entry);
+  void emitDebugLocEntry(ByteStreamer &Streamer,
+                         const DebugLocEntry &Entry);
   /// \brief emit a single value for the debug loc section.
   void emitDebugLocValue(ByteStreamer &Streamer,
                          const DebugLocEntry::Value &Value,