[clang][cli] Squash exception model in LangOptions into one member

This squashes multiple members in LangOptions into one. This is leveraged in a follow-up patch that implements marshalling of related command-line options.

Depends on D93214.

Reviewed By: dexonsmith

Differential Revision: https://reviews.llvm.org/D93215

1 files changed, 8 insertions, 4 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index c1d5364..e4058cf 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -2981,10 +2981,14 @@ static void ParseLangArgs(LangOptions &Opts, ArgList &Args, InputKind IK,
       Diags.Report(diag::err_fe_invalid_exception_model)
           << Opt.getName() << T.str();
 
-    Opts.SjLjExceptions = Opt.matches(options::OPT_fsjlj_exceptions);
-    Opts.SEHExceptions = Opt.matches(options::OPT_fseh_exceptions);
-    Opts.DWARFExceptions = Opt.matches(options::OPT_fdwarf_exceptions);
-    Opts.WasmExceptions = Opt.matches(options::OPT_fwasm_exceptions);
+    if (Opt.matches(options::OPT_fsjlj_exceptions))
+      Opts.setExceptionHandling(llvm::ExceptionHandling::SjLj);
+    else if (Opt.matches(options::OPT_fseh_exceptions))
+      Opts.setExceptionHandling(llvm::ExceptionHandling::WinEH);
+    else if (Opt.matches(options::OPT_fdwarf_exceptions))
+      Opts.setExceptionHandling(llvm::ExceptionHandling::DwarfCFI);
+    else if (Opt.matches(options::OPT_fwasm_exceptions))
+      Opts.setExceptionHandling(llvm::ExceptionHandling::Wasm);
   }
 
   Opts.ExternCNoUnwind = Args.hasArg(OPT_fexternc_nounwind);