Subzero: Shorten and normalize strings in non-DUMP builds.

src/IceInst.cpp

Index: src/IceInst.cpp
diff --git a/src/IceInst.cpp b/src/IceInst.cpp
index 8412b0535b8a8fce90a1161cec7cbc78ef0019bd..1265d5898b7d1118723fb78a6e36c19f35b92a26 100644
--- a/src/IceInst.cpp
+++ b/src/IceInst.cpp
@@ -579,7 +579,7 @@ GlobalString makeName(Cfg *Func, const SizeT Id) {
     return GlobalString::createWithString(
         Ctx, ".L" + FuncName.toString() + "$jumptable$__" + std::to_string(Id));
   return GlobalString::createWithString(
-      Ctx, ".L" + std::to_string(FuncName.getID()) + "_" + std::to_string(Id));
+      Ctx, "$J" + std::to_string(FuncName.getID()) + "_" + std::to_string(Id));
 }
 } // end of anonymous namespace