Check for metadata in PNaCl ABI checker.

tools/llc/llc.cpp

Index: tools/llc/llc.cpp
diff --git a/tools/llc/llc.cpp b/tools/llc/llc.cpp
index 64bb6991d8d990e75028acacdcbd5ae1f092b46a..8f9355aaa88d95b7e60f15e408eaf16b02b7f68b 100644
--- a/tools/llc/llc.cpp
+++ b/tools/llc/llc.cpp
@@ -126,7 +126,11 @@ static cl::opt<bool>
 PNaClABIVerifyFatalErrors("pnaclabi-verify-fatal-errors",
   cl::desc("PNaCl ABI verification errors are fatal"),
   cl::init(false));
-// @LOCALMOD-END
+static cl::opt<bool>
+AllowDebugMetadata("pnaclabi-verify-allow-debug",
+  cl::desc("Allow debug metadata during PNaCl ABI verification."),
+  cl::init(false));
+//// @LOCALMOD-END
 
 // Determine optimization level.
 static cl::opt<char>
@@ -388,7 +392,8 @@ static int compileModule(char **argv, LLVMContext &Context) {
     // @LOCALMOD-BEGIN
     if (PNaClABIVerify) {
       // Verify the module (but not the functions yet)
-      ModulePass *VerifyPass = createPNaClABIVerifyModulePass(&ABIErrorReporter);
+      ModulePass *VerifyPass = createPNaClABIVerifyModulePass(
+          &ABIErrorReporter, AllowDebugMetadata);
       VerifyPass->runOnModule(*mod);
       CheckABIVerifyErrors(ABIErrorReporter, "Module");
     }
@@ -522,7 +527,8 @@ static int compileModule(char **argv, LLVMContext &Context) {
   // Add the ABI verifier pass before the analysis and code emission passes.
   FunctionPass *FunctionVerifyPass = NULL;
   if (PNaClABIVerify) {
-    FunctionVerifyPass = createPNaClABIVerifyFunctionsPass(&ABIErrorReporter);
+    FunctionVerifyPass = createPNaClABIVerifyFunctionsPass(
+        &ABIErrorReporter, AllowDebugMetadata);
     PM->add(FunctionVerifyPass);
   }
   // @LOCALMOD-END