Rely on a single DWARF version instead of having two copies

This patch makes AsmPrinter less reliant on DwarfDebug by relying on the DWARF version in the AsmPrinter's MCStreamer's MCContext. This allows us to remove the redundant DWARF version from DwarfDebug. It also lets us change code that used to access the AsmPrinter's DwarfDebug just to get to the DWARF version by changing the DWARF version accessor on AsmPrinter so that it grabs the version from its MCStreamer's MCContext.

Differential Revision: https://reviews.llvm.org/D27032

llvm-svn: 287839

1 files changed, 1 insertions, 4 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
index 7d36fe924fd..37d03a6bf90 100644
--- a/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/DwarfDebug.h
@@ -254,9 +254,6 @@ class DwarfDebug : public DebugHandlerBase {
   /// Whether to emit all linkage names, or just abstract subprograms.
   bool UseAllLinkageNames;
 
-  /// Version of dwarf we're emitting.
-  unsigned DwarfVersion;
-
   /// DWARF5 Experimental Options
   /// @{
   bool HasDwarfAccelTables;
@@ -515,7 +512,7 @@ public:
   bool useSplitDwarf() const { return HasSplitDwarf; }
 
   /// Returns the Dwarf Version.
-  unsigned getDwarfVersion() const { return DwarfVersion; }
+  uint16_t getDwarfVersion() const;
 
   /// Returns the previous CU that was being updated
   const DwarfCompileUnit *getPrevCU() const { return PrevCU; }