Remove unreachable code in Clang. (replace with llvm_unreachable where appropriate or when GCC requires it)

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@148292 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 1 insertions, 11 deletions

diff --git a/utils/TableGen/NeonEmitter.cpp b/utils/TableGen/NeonEmitter.cpp
index 5d6dee6b44..e6f2e53aa7 100644
--- a/utils/TableGen/NeonEmitter.cpp
+++ b/utils/TableGen/NeonEmitter.cpp
@@ -28,6 +28,7 @@
 #include "llvm/ADT/SmallString.h"
 #include "llvm/ADT/SmallVector.h"
 #include "llvm/ADT/StringExtras.h"
+#include "llvm/Support/ErrorHandling.h"
 #include <string>
 
 using namespace llvm;
@@ -56,7 +57,6 @@ static void ParseTypes(Record *r, std::string &s,
       default:
         throw TGError(r->getLoc(),
                       "Unexpected letter: " + std::string(data + len, 1));
-        break;
     }
     TV.push_back(StringRef(data, len + 1));
     data += len + 1;
@@ -78,7 +78,6 @@ static char Widen(const char t) {
       return 'f';
     default: throw "unhandled type in widen!";
   }
-  return '\0';
 }
 
 /// Narrow - Convert a type code into the next smaller type.  short -> char,
@@ -95,7 +94,6 @@ static char Narrow(const char t) {
       return 'h';
     default: throw "unhandled type in narrow!";
   }
-  return '\0';
 }
 
 /// For a particular StringRef, return the base type code, and whether it has
@@ -266,7 +264,6 @@ static std::string TypeString(const char mod, StringRef typestr) {
       break;
     default:
       throw "unhandled type!";
-      break;
   }
 
   if (mod == '2')
@@ -449,7 +446,6 @@ static std::string MangleName(const std::string &name, StringRef typestr,
     break;
   default:
     throw "unhandled type!";
-    break;
   }
   if (ck == ClassB)
     s += "_v";
@@ -588,7 +584,6 @@ static unsigned GetNumElements(StringRef typestr, bool &quad) {
   case 'f': nElts = 2; break;
   default:
     throw "unhandled type!";
-    break;
   }
   if (quad) nElts <<= 1;
   return nElts;
@@ -820,7 +815,6 @@ static std::string GenOpString(OpKind op, const std::string &proto,
   }
   default:
     throw "unknown OpKind!";
-    break;
   }
   return s;
 }
@@ -866,7 +860,6 @@ static unsigned GetNeonEnum(const std::string &proto, StringRef typestr) {
       break;
     default:
       throw "unhandled type!";
-      break;
   }
   NeonTypeFlags Flags(ET, usgn, quad && proto[1] != 'g');
   return Flags.getFlags();
@@ -1239,10 +1232,7 @@ static unsigned RangeFromType(const char mod, StringRef typestr) {
       return (1 << (int)quad) - 1;
     default:
       throw "unhandled type!";
-      break;
   }
-  assert(0 && "unreachable");
-  return 0;
 }
 
 /// runHeader - Emit a file with sections defining: