Check for metadata in PNaCl ABI checker.

tools/pnacl-abicheck/pnacl-abicheck.cpp

Index: tools/pnacl-abicheck/pnacl-abicheck.cpp
diff --git a/tools/pnacl-abicheck/pnacl-abicheck.cpp b/tools/pnacl-abicheck/pnacl-abicheck.cpp
index e8fce66acdd9da3a491942070a560ffec36bd656..9b995fc6cd6ee35e0715041c3e8b319e2a0b12b3 100644
--- a/tools/pnacl-abicheck/pnacl-abicheck.cpp
+++ b/tools/pnacl-abicheck/pnacl-abicheck.cpp
@@ -26,9 +26,14 @@ using namespace llvm;
 static cl::opt<std::string>
 InputFilename(cl::Positional, cl::desc("<input bitcode>"), cl::init("-"));
 
-static cl::opt<bool, false>
+static cl::opt<bool>
 Quiet("q", cl::desc("Do not print error messages"));
 
+static cl::opt<bool>
+AllowDebugMetadata("allow-debug-metadata",
+                   cl::desc("Allow debug metadata."));
+
+
 // Print any errors collected by the error reporter. Return true if
 // there were any.
 static bool CheckABIVerifyErrors(PNaClABIErrorReporter &Reporter,
@@ -59,11 +64,13 @@ int main(int argc, char **argv) {
   bool ErrorsFound = false;
   // Manually run the passes so we can tell the user which function had the
   // error. No need for a pass manager since it's just one pass.
-  OwningPtr<ModulePass> ModuleChecker(createPNaClABIVerifyModulePass(&ABIErrorReporter));
+  OwningPtr<ModulePass> ModuleChecker(
+      createPNaClABIVerifyModulePass(&ABIErrorReporter, AllowDebugMetadata));
   ModuleChecker->runOnModule(*Mod);
   ErrorsFound |= CheckABIVerifyErrors(ABIErrorReporter, "Module");
   OwningPtr<FunctionPass> FunctionChecker(
-      createPNaClABIVerifyFunctionsPass(&ABIErrorReporter));
+      createPNaClABIVerifyFunctionsPass(&ABIErrorReporter,
+                                        AllowDebugMetadata));
   for (Module::iterator MI = Mod->begin(), ME = Mod->end(); MI != ME; ++MI) {
     FunctionChecker->runOnFunction(*MI);
     ErrorsFound |= CheckABIVerifyErrors(ABIErrorReporter,