message: Fixing build on llvm trunk.
diff: @@ -1020,8 +1020,7 @@ void FunctionEmitContext::EmitCaseLabel(int value, bool checkMask, SourcePos pos
  llvm::BasicBlock *bbCaseImpl = NULL;
  if (emitGenXHardwareMask()) {
  // Create basic block with actual case implementation
  - llvm::Twine bbName = llvm::Twine(bbCase->getName()) + "_impl";
  - bbCaseImpl = CreateBasicBlock(bbName, bbCase);
  + bbCaseImpl = CreateBasicBlock(llvm::Twine(bbCase->getName()) + "_impl", bbCase);
  }
  #endif
  @@ -3142,8 +3141,8 @@ llvm::Value *FunctionEmitContext::BroadcastValue(llvm::Value *v, llvm::Type *vec
  llvm::Value *undef2 = llvm::UndefValue::get(vecType);
  // InsertElement
  - llvm::Twine tw = name.isTriviallyEmpty() ? (llvm::Twine(v->getName()) + "_broadcast") : name + llvm::Twine("_init");
  - llvm::Value *insert = InsertInst(undef1, v, 0, tw.str().c_str());
  + llvm::Value *insert =
  + InsertInst(undef1, v, 0, name.isTriviallyEmpty() ? (llvm::Twine(v->getName()) + "_broadcast") : name + "_init");
  // ShuffleVector
  #if ISPC_LLVM_VERSION < ISPC_LLVM_11_0
  