More dead code removal (using -Wunreachable-code)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148578 91177308-0d34-0410-b5e6-96231b3b80d8

5 files changed, 2 insertions, 8 deletions

diff --git a/lib/MC/MCDisassembler/Disassembler.cpp b/lib/MC/MCDisassembler/Disassembler.cpp
index f156760875..9eb99d28e7 100644
--- a/lib/MC/MCDisassembler/Disassembler.cpp
+++ b/lib/MC/MCDisassembler/Disassembler.cpp
@@ -18,6 +18,7 @@
 #include "llvm/MC/MCRegisterInfo.h"
 #include "llvm/Support/MemoryObject.h"
 #include "llvm/Support/TargetRegistry.h"
+#include "llvm/Support/ErrorHandling.h"
 
 namespace llvm {
 class Target;
@@ -163,5 +164,5 @@ size_t LLVMDisasmInstruction(LLVMDisasmContextRef DCR, uint8_t *Bytes,
     return Size;
   }
   }
-  return 0;
+  llvm_unreachable("Invalid DecodeStatus!");
 }
diff --git a/lib/MC/MCDisassembler/EDOperand.cpp b/lib/MC/MCDisassembler/EDOperand.cpp
index 6a4e56ff72..9aededb676 100644
--- a/lib/MC/MCDisassembler/EDOperand.cpp
+++ b/lib/MC/MCDisassembler/EDOperand.cpp
@@ -200,7 +200,6 @@ int EDOperand::evaluate(uint64_t &result,
       return 0;
     }
     } // switch (operandType)
-    break;
   case Triple::arm:
   case Triple::thumb:
     switch (operandType) {
@@ -236,10 +235,7 @@ int EDOperand::evaluate(uint64_t &result,
       return 0;
     }
     }
-    break;
   }
-  
-  return -1;
 }
 
 int EDOperand::isRegister() {
diff --git a/lib/MC/MCParser/AsmParser.cpp b/lib/MC/MCParser/AsmParser.cpp
index 16eb64b5f5..baf8b30a9b 100644
--- a/lib/MC/MCParser/AsmParser.cpp
+++ b/lib/MC/MCParser/AsmParser.cpp
@@ -827,7 +827,6 @@ bool AsmParser::ParseExpression(const MCExpr *&Res, SMLoc &EndLoc) {
     if (!ModifiedRes) {
       return TokError("invalid modifier '" + getTok().getIdentifier() +
                       "' (no symbols present)");
-      return true;
     }
 
     Res = ModifiedRes;
diff --git a/lib/MC/MCPureStreamer.cpp b/lib/MC/MCPureStreamer.cpp
index 20a3bdb014..8a3bf8778f 100644
--- a/lib/MC/MCPureStreamer.cpp
+++ b/lib/MC/MCPureStreamer.cpp
@@ -96,7 +96,6 @@ public:
   virtual bool EmitDwarfFileDirective(unsigned FileNo, StringRef Directory,
                                       StringRef Filename) {
     report_fatal_error("unsupported directive in pure streamer");
-    return false;
   }
 
   /// @}
diff --git a/lib/MC/WinCOFFStreamer.cpp b/lib/MC/WinCOFFStreamer.cpp
index 265f0daef0..7238c9e0e9 100644
--- a/lib/MC/WinCOFFStreamer.cpp
+++ b/lib/MC/WinCOFFStreamer.cpp
@@ -253,7 +253,6 @@ void WinCOFFStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
 
   default:
     llvm_unreachable("unsupported attribute");
-    break;
   }
 }