More dead code removal (using -Wunreachable-code)

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

6 files changed, 5 insertions, 19 deletions

diff --git a/lib/Target/MBlaze/AsmParser/MBlazeAsmParser.cpp b/lib/Target/MBlaze/AsmParser/MBlazeAsmParser.cpp
index 97d311c..c1b003b 100644
--- a/lib/Target/MBlaze/AsmParser/MBlazeAsmParser.cpp
+++ b/lib/Target/MBlaze/AsmParser/MBlazeAsmParser.cpp
@@ -347,7 +347,6 @@ MatchAndEmitInstruction(SMLoc IDLoc,
   }
 
   llvm_unreachable("Implement any new match types added!");
-  return true;
 }
 
 MBlazeOperand *MBlazeAsmParser::
diff --git a/lib/Target/MBlaze/MBlazeELFWriterInfo.cpp b/lib/Target/MBlaze/MBlazeELFWriterInfo.cpp
index ad9247d..2928da4 100644
--- a/lib/Target/MBlaze/MBlazeELFWriterInfo.cpp
+++ b/lib/Target/MBlaze/MBlazeELFWriterInfo.cpp
@@ -41,7 +41,6 @@ unsigned MBlazeELFWriterInfo::getRelocationType(unsigned MachineRelTy) const {
   default:
     llvm_unreachable("unknown mblaze machine relocation type");
   }
-  return 0;
 }
 
 long int MBlazeELFWriterInfo::getDefaultAddendForRelTy(unsigned RelTy,
@@ -54,7 +53,6 @@ long int MBlazeELFWriterInfo::getDefaultAddendForRelTy(unsigned RelTy,
   default:
     llvm_unreachable("unknown mblaze relocation type");
   }
-  return 0;
 }
 
 unsigned MBlazeELFWriterInfo::getRelocationTySize(unsigned RelTy) const {
diff --git a/lib/Target/MBlaze/MBlazeISelLowering.cpp b/lib/Target/MBlaze/MBlazeISelLowering.cpp
index 0002174..9b09da0 100644
--- a/lib/Target/MBlaze/MBlazeISelLowering.cpp
+++ b/lib/Target/MBlaze/MBlazeISelLowering.cpp
@@ -602,7 +602,6 @@ LowerGlobalAddress(SDValue Op, SelectionDAG &DAG) const {
 SDValue MBlazeTargetLowering::
 LowerGlobalTLSAddress(SDValue Op, SelectionDAG &DAG) const {
   llvm_unreachable("TLS not implemented for MicroBlaze.");
-  return SDValue(); // Not reached
 }
 
 SDValue MBlazeTargetLowering::
@@ -1081,7 +1080,6 @@ getConstraintType(const std::string &Constraint) const
       case 'y':
       case 'f':
         return C_RegisterClass;
-        break;
     }
   }
   return TargetLowering::getConstraintType(Constraint);
diff --git a/lib/Target/MBlaze/MBlazeRegisterInfo.cpp b/lib/Target/MBlaze/MBlazeRegisterInfo.cpp
index 9788ba9..0b1b107 100644
--- a/lib/Target/MBlaze/MBlazeRegisterInfo.cpp
+++ b/lib/Target/MBlaze/MBlazeRegisterInfo.cpp
@@ -184,10 +184,8 @@ unsigned MBlazeRegisterInfo::getFrameRegister(const MachineFunction &MF) const {
 
 unsigned MBlazeRegisterInfo::getEHExceptionRegister() const {
   llvm_unreachable("What is the exception register");
-  return 0;
 }
 
 unsigned MBlazeRegisterInfo::getEHHandlerRegister() const {
   llvm_unreachable("What is the exception handler register");
-  return 0;
 }
diff --git a/lib/Target/MBlaze/MCTargetDesc/MBlazeBaseInfo.h b/lib/Target/MBlaze/MCTargetDesc/MBlazeBaseInfo.h
index c8bdd6f..437026e 100644
--- a/lib/Target/MBlaze/MCTargetDesc/MBlazeBaseInfo.h
+++ b/lib/Target/MBlaze/MCTargetDesc/MBlazeBaseInfo.h
@@ -96,7 +96,6 @@ static inline bool isSpecialMBlazeRegister(unsigned Reg) {
     default:
       return false;
   }
-  return false; // Not reached
 }
 
 /// getMBlazeRegisterNumbering - Given the enum value for some register, e.g.
@@ -161,7 +160,6 @@ static inline unsigned getMBlazeRegisterNumbering(unsigned RegEnum) {
     case MBlaze::RPVR11 : return 0x200B;
     default: llvm_unreachable("Unknown register number!");
   }
-  return 0; // Not reached
 }
 
 /// getRegisterFromNumbering - Given the enum value for some register, e.g.
@@ -202,7 +200,6 @@ static inline unsigned getMBlazeRegisterFromNumbering(unsigned Reg) {
     case 31 : return MBlaze::R31;
     default: llvm_unreachable("Unknown register number!");
   }
-  return 0; // Not reached
 }
 
 static inline unsigned getSpecialMBlazeRegisterFromNumbering(unsigned Reg) {
@@ -233,7 +230,6 @@ static inline unsigned getSpecialMBlazeRegisterFromNumbering(unsigned Reg) {
     case 0x200B : return MBlaze::RPVR11;
     default: llvm_unreachable("Unknown register number!");
   }
-  return 0; // Not reached
 }
 
 } // end namespace llvm;
diff --git a/lib/Target/MBlaze/MCTargetDesc/MBlazeMCCodeEmitter.cpp b/lib/Target/MBlaze/MCTargetDesc/MBlazeMCCodeEmitter.cpp
index 1514557..e22ad0a 100644
--- a/lib/Target/MBlaze/MCTargetDesc/MBlazeMCCodeEmitter.cpp
+++ b/lib/Target/MBlaze/MCTargetDesc/MBlazeMCCodeEmitter.cpp
@@ -109,17 +109,14 @@ unsigned MBlazeMCCodeEmitter::getMachineOpValue(const MCInst &MI,
                                              const MCOperand &MO) const {
   if (MO.isReg())
     return getMBlazeRegisterNumbering(MO.getReg());
-  else if (MO.isImm())
+  if (MO.isImm())
     return static_cast<unsigned>(MO.getImm());
-  else if (MO.isExpr())
-      return 0; // The relocation has already been recorded at this point.
-  else {
+  if (MO.isExpr())
+    return 0; // The relocation has already been recorded at this point.
 #ifndef NDEBUG
-    errs() << MO;
+  errs() << MO;
 #endif
-    llvm_unreachable(0);
-  }
-  return 0;
+  llvm_unreachable(0);
 }
 
 void MBlazeMCCodeEmitter::