DebugInfo: Avoid emitting standard opcode lengths in debug_line.dwo headers where opcodes are never used anyway

Introduce a slightly tighter wrapper around the header structure that
handles this use case. (MCDwarfDwoLineTable)

llvm-svn: 204101

4 files changed, 5 insertions, 5 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
index ab03753227d..8123834741a 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.cpp
@@ -2684,7 +2684,7 @@ void DwarfDebug::emitDebugLineDWO() {
   assert(useSplitDwarf() && "No split dwarf?");
   Asm->OutStreamer.SwitchSection(
       Asm->getObjFileLowering().getDwarfLineDWOSection());
-  Asm->OutStreamer.EmitLabel(SplitTypeUnitFileTable.Emit(&Asm->OutStreamer).second);
+  SplitTypeUnitFileTable.Emit(Asm->OutStreamer);
 }
 
 // Emit the .debug_str.dwo section for separated dwarf. This contains the
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 4756509d094..ba448ec9b29 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -489,7 +489,7 @@ class DwarfDebug : public AsmPrinterHandler {
 
   // Store file names for type units under fission in a line table header that
   // will be emitted into debug_line.dwo.
-  MCDwarfLineTableHeader SplitTypeUnitFileTable;
+  MCDwarfDwoLineTable SplitTypeUnitFileTable;
 
   void addScopeVariable(LexicalScope *LS, DbgVariable *Var);
 
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
index 2a74d0552fe..2eda435f86e 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.cpp
@@ -57,7 +57,7 @@ DwarfCompileUnit::DwarfCompileUnit(unsigned UID, DIE *D, DICompileUnit Node,
 
 DwarfTypeUnit::DwarfTypeUnit(unsigned UID, DIE *D, DwarfCompileUnit &CU,
                              AsmPrinter *A, DwarfDebug *DW, DwarfFile *DWU,
-                             MCDwarfLineTableHeader *SplitLineTable)
+                             MCDwarfDwoLineTable *SplitLineTable)
     : DwarfUnit(UID, D, CU.getCUNode(), A, DW, DWU), CU(CU),
       SplitLineTable(SplitLineTable) {
   if (SplitLineTable)
diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.h b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.h
index 68954dc5548..a1c1fcc87a2 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfUnit.h
@@ -616,12 +616,12 @@ private:
   uint64_t TypeSignature;
   const DIE *Ty;
   DwarfCompileUnit &CU;
-  MCDwarfLineTableHeader *SplitLineTable;
+  MCDwarfDwoLineTable *SplitLineTable;
 
 public:
   DwarfTypeUnit(unsigned UID, DIE *D, DwarfCompileUnit &CU, AsmPrinter *A,
                 DwarfDebug *DW, DwarfFile *DWU,
-                MCDwarfLineTableHeader *SplitLineTable = nullptr);
+                MCDwarfDwoLineTable *SplitLineTable = nullptr);
 
   void setTypeSignature(uint64_t Signature) { TypeSignature = Signature; }
   uint64_t getTypeSignature() const { return TypeSignature; }