[clang] [cfi] Enable -fsanitize-annotate-debug-info functionality for CFI checks (PR #139809)

[Dan Liew via cfe-commits]

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@@ -2779,13 +2779,47 @@ void CodeGenFunction::EmitTypeMetadataCodeForVCall(const CXXRecordDecl *RD,
   }
 }
 
+std::pair<SanitizerKind::SanitizerOrdinal, llvm::SanitizerStatKind>
+CodeGenFunction::ParseCFITypeCheckKind(CFITypeCheckKind TCK) {
+  SanitizerKind::SanitizerOrdinal M;
+  llvm::SanitizerStatKind SSK;
+
+  switch (TCK) {
+  case CFITCK_VCall:
+    M = SanitizerKind::SO_CFIVCall;
+    SSK = llvm::SanStat_CFI_VCall;
+    break;
+  case CFITCK_NVCall:
+    M = SanitizerKind::SO_CFINVCall;
+    SSK = llvm::SanStat_CFI_NVCall;
+    break;
+  case CFITCK_DerivedCast:
+    M = SanitizerKind::SO_CFIDerivedCast;
+    SSK = llvm::SanStat_CFI_DerivedCast;
+    break;
+  case CFITCK_UnrelatedCast:
+    M = SanitizerKind::SO_CFIUnrelatedCast;
+    SSK = llvm::SanStat_CFI_UnrelatedCast;
+    break;
+  case CFITCK_ICall:
+  case CFITCK_NVMFCall:
+  case CFITCK_VMFCall:
+    llvm_unreachable("unexpected sanitizer kind");
+  }
+
+  return std::make_pair(M, SSK);
+}
+
 void CodeGenFunction::EmitVTablePtrCheckForCall(const CXXRecordDecl *RD,
                                                 llvm::Value *VTable,
                                                 CFITypeCheckKind TCK,
                                                 SourceLocation Loc) {
   if (!SanOpts.has(SanitizerKind::CFICastStrict))
     RD = LeastDerivedClassWithSameLayout(RD);
 
+  auto [Ordinal, SSK] = ParseCFITypeCheckKind(TCK);
----------------
delcypher wrote:

Is `SSK` unused?

https://github.com/llvm/llvm-project/pull/139809