arc migrator: Provide infrastructure to add options

specific to migrator. Use its first option to
warn migrating from GC to arc when 
NSAllocateCollectable/NSReallocateCollectable is used.
// rdar://10532541

llvm-svn: 148887

1 files changed, 6 insertions, 0 deletions

diff --git a/clang/lib/Frontend/CompilerInvocation.cpp b/clang/lib/Frontend/CompilerInvocation.cpp
index f4576093d8c..aa367b0a74a 100644
--- a/clang/lib/Frontend/CompilerInvocation.cpp
+++ b/clang/lib/Frontend/CompilerInvocation.cpp
@@ -1053,6 +1053,11 @@ static bool ParseAnalyzerArgs(AnalyzerOptions &Opts, ArgList &Args,
   return Success;
 }
 
+static bool ParseMigratorArgs(MigratorOptions &Opts, ArgList &Args) {
+  Opts.NoNSAllocReallocError = Args.hasArg(OPT_migrator_no_nsalloc_error);
+  return true;
+}
+
 static bool ParseCodeGenArgs(CodeGenOptions &Opts, ArgList &Args, InputKind IK,
                              DiagnosticsEngine &Diags) {
   using namespace cc1options;
@@ -2051,6 +2056,7 @@ bool CompilerInvocation::CreateFromArgs(CompilerInvocation &Res,
   }
 
   Success = ParseAnalyzerArgs(Res.getAnalyzerOpts(), *Args, Diags) && Success;
+  Success = ParseMigratorArgs(Res.getMigratorOpts(), *Args) && Success;
   ParseDependencyOutputArgs(Res.getDependencyOutputOpts(), *Args);
   Success = ParseDiagnosticArgs(Res.getDiagnosticOpts(), *Args, Diags)
             && Success;