Revert "Emit the CodeView `S_ARMSWITCHTABLE` debug symbol for jump tables"

This reverts commit 8d0c3db388143f4e058b5f513a70fd5d089d51c3.

Causes crashes, see comments in https://reviews.llvm.org/D149367.

Some follow-up fixes are also reverted:

This reverts commit 636269f4fca44693bfd787b0a37bb0328ffcc085.
This reverts commit 5966079cf4d4de0285004eef051784d0d9f7a3a6.
This reverts commit e7294dbc85d24a08c716d9babbe7f68390cf219b.

1 files changed, 0 insertions, 16 deletions

diff --git a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
index eb274d2..1455ac4 100644
--- a/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
+++ b/llvm/lib/CodeGen/AsmPrinter/CodeViewDebug.h
@@ -23,7 +23,6 @@
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/CodeGen/DbgEntityHistoryCalculator.h"
 #include "llvm/CodeGen/DebugHandlerBase.h"
-#include "llvm/CodeGen/MachineJumpTableInfo.h"
 #include "llvm/DebugInfo/CodeView/CodeView.h"
 #include "llvm/DebugInfo/CodeView/GlobalTypeTableBuilder.h"
 #include "llvm/DebugInfo/CodeView/TypeIndex.h"
@@ -134,15 +133,6 @@ private:
     StringRef Name;
   };
 
-  struct JumpTableInfo {
-    codeview::JumpTableEntrySize EntrySize;
-    const MCSymbol *Base;
-    uint64_t BaseOffset;
-    const MCSymbol *Branch;
-    const MCSymbol *Table;
-    size_t TableSize;
-  };
-
   // For each function, store a vector of labels to its instructions, as well as
   // to the end of the function.
   struct FunctionInfo {
@@ -170,8 +160,6 @@ private:
     std::vector<std::tuple<const MCSymbol *, const MCSymbol *, const DIType *>>
         HeapAllocSites;
 
-    std::vector<JumpTableInfo> JumpTables;
-
     const MCSymbol *Begin = nullptr;
     const MCSymbol *End = nullptr;
     unsigned FuncId = 0;
@@ -490,10 +478,6 @@ private:
 
   unsigned getPointerSizeInBytes();
 
-  void discoverJumpTableBranches(const MachineFunction *MF, bool isThumb);
-  void collectDebugInfoForJumpTables(const MachineFunction *MF, bool isThumb);
-  void emitDebugInfoForJumpTables(const FunctionInfo &FI);
-
 protected:
   /// Gather pre-function debug information.
   void beginFunctionImpl(const MachineFunction *MF) override;