[Clang] Diagnose apply AST consume actions on LLVM IR (#88602)

Fixes https://github.com/llvm/llvm-project/issues/88522

This PR introduce a new diagnostic to report apply AST consume actions
on LLVM IR.

---------

Signed-off-by: yronglin <yronglin777@gmail.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/clang/lib/Frontend/FrontendAction.cpp b/clang/lib/Frontend/FrontendAction.cpp
index a2af738..9ae7664 100644
--- a/clang/lib/Frontend/FrontendAction.cpp
+++ b/clang/lib/Frontend/FrontendAction.cpp
@@ -757,8 +757,11 @@ bool FrontendAction::BeginSourceFile(CompilerInstance &CI,
 
   // IR files bypass the rest of initialization.
   if (Input.getKind().getLanguage() == Language::LLVM_IR) {
-    assert(hasIRSupport() &&
-           "This action does not have IR file support!");
+    if (!hasIRSupport()) {
+      CI.getDiagnostics().Report(diag::err_ast_action_on_llvm_ir)
+          << Input.getFile();
+      return false;
+    }
 
     // Inform the diagnostic client we are processing a source file.
     CI.getDiagnosticClient().BeginSourceFile(CI.getLangOpts(), nullptr);