Simplify by removing CFITCK_ICall support from ParseCFITypeCheckKind

Author: thurstond

clang/lib/CodeGen/CGClass.cpp

@@ -2802,9 +2802,6 @@ CodeGenFunction::ParseCFITypeCheckKind(CFITypeCheckKind TCK) {
     SSK = llvm::SanStat_CFI_UnrelatedCast;
     break;
   case CFITCK_ICall:
-    M = SanitizerKind::SO_CFIICall;
-    SSK = llvm::SanStat_CFI_ICall;
-    break;
   case CFITCK_NVMFCall:
   case CFITCK_VMFCall:
     llvm_unreachable("unexpected sanitizer kind");
@@ -2883,18 +2880,6 @@ void CodeGenFunction::EmitVTablePtrCheck(const CXXRecordDecl *RD,
     return;
 
   auto [M, SSK] = ParseCFITypeCheckKind(TCK);
-  switch (TCK) {
-  case CFITCK_VCall:
-  case CFITCK_NVCall:
-  case CFITCK_DerivedCast:
-  case CFITCK_UnrelatedCast:
-    break;
-  case CFITCK_ICall:
-  case CFITCK_NVMFCall:
-  case CFITCK_VMFCall:
-    llvm_unreachable("unexpected sanitizer kind");
-  }
-
   std::string TypeName = RD->getQualifiedNameAsString();
   if (getContext().getNoSanitizeList().containsType(
           SanitizerMask::bitPosToMask(M), TypeName))