[Disassembler] Delete the VStream parameter of MCDisassembler::getInstruction()

The argument is llvm::null() everywhere except llvm::errs() in
llvm-objdump in -DLLVM_ENABLE_ASSERTIONS=On builds. It is used by no
target but X86 in -DLLVM_ENABLE_ASSERTIONS=On builds.

If we ever have the needs to add verbose log to disassemblers, we can
record log with a member function, instead of passing it around as an
argument.

1 files changed, 2 insertions, 9 deletions

diff --git a/llvm/tools/llvm-objdump/llvm-objdump.cpp b/llvm/tools/llvm-objdump/llvm-objdump.cpp
index d25ebf3..6bd37a1 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ b/llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -1353,16 +1353,10 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
         continue;
       }
 
-#ifndef NDEBUG
-      raw_ostream &DebugOut = DebugFlag ? dbgs() : nulls();
-#else
-      raw_ostream &DebugOut = nulls();
-#endif
-
       // Some targets (like WebAssembly) have a special prelude at the start
       // of each symbol.
       DisAsm->onSymbolStart(SymbolName, Size, Bytes.slice(Start, End - Start),
-                            SectionAddr + Start, DebugOut, CommentStream);
+                            SectionAddr + Start, CommentStream);
       Start += Size;
 
       Index = Start;
@@ -1426,8 +1420,7 @@ static void disassembleObject(const Target *TheTarget, const ObjectFile *Obj,
         // provided
         MCInst Inst;
         bool Disassembled = DisAsm->getInstruction(
-            Inst, Size, Bytes.slice(Index), SectionAddr + Index, DebugOut,
-            CommentStream);
+            Inst, Size, Bytes.slice(Index), SectionAddr + Index, CommentStream);
         if (Size == 0)
           Size = 1;