[clang] Refactor `CodeGenOptions` to specify compatibility as X macro arg (#146910)

This is the `CodeGenOptions` counterpart to
https://github.com/llvm/llvm-project/pull/146766.

1 files changed, 11 insertions, 7 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index e233821..b9f7579 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -5308,13 +5308,17 @@ std::string CompilerInvocation::getModuleHash() const {
 
   // Extend the signature with the affecting debug options.
   if (getHeaderSearchOpts().ModuleFormat == "obj") {
-#define DEBUGOPT(Name, Bits, Default) HBuilder.add(CodeGenOpts->Name);
-#define VALUE_DEBUGOPT(Name, Bits, Default) HBuilder.add(CodeGenOpts->Name);
-#define ENUM_DEBUGOPT(Name, Type, Bits, Default)                               \
-  HBuilder.add(static_cast<unsigned>(CodeGenOpts->get##Name()));
-#define BENIGN_DEBUGOPT(Name, Bits, Default)
-#define BENIGN_VALUE_DEBUGOPT(Name, Bits, Default)
-#define BENIGN_ENUM_DEBUGOPT(Name, Type, Bits, Default)
+    // FIXME: Replace with C++20 `using enum CodeGenOptions::CompatibilityKind`.
+    using CK = CodeGenOptions::CompatibilityKind;
+#define DEBUGOPT(Name, Bits, Default, Compatibility)                           \
+  if constexpr (CK::Compatibility == CK::Affecting)                            \
+    HBuilder.add(CodeGenOpts->Name);
+#define VALUE_DEBUGOPT(Name, Bits, Default, Compatibility)                     \
+  if constexpr (CK::Compatibility == CK::Affecting)                            \
+    HBuilder.add(CodeGenOpts->Name);
+#define ENUM_DEBUGOPT(Name, Type, Bits, Default, Compatibility)                \
+  if constexpr (CK::Compatibility == CK::Affecting)                            \
+    HBuilder.add(static_cast<unsigned>(CodeGenOpts->get##Name()));
 #include "clang/Basic/DebugOptions.def"
   }