addressing comments

Author: joaosaffran

llvm/lib/Target/DirectX/DXILRootSignature.cpp

@@ -187,19 +187,22 @@ PreservedAnalyses RootSignatureAnalysisPrinter::run(Module &M,
      << "\n";
   uint8_t Space = 0;
   for (const auto &F : M) {
-    const auto RSD = RSDMap.at(&F);
+    const auto &RSD = RSDMap.find(&F);
+    if (RSD == RSDMap.end())
+      continue;
+    const auto &RS = RSD->second;
     OS << "Definition for '" << F.getName() << "':\n";
 
     // start root signature header
     Space++;
-    OS << indent(Space) << "Flags: " << format_hex(RSD.Flags, 8) << ":\n";
-    OS << indent(Space) << "Version: " << RSD.Version << ":\n";
-    OS << indent(Space) << "NumParameters: " << RSD.NumParameters << ":\n";
-    OS << indent(Space) << "RootParametersOffset: " << RSD.RootParametersOffset
+    OS << indent(Space) << "Flags: " << format_hex(RS.Flags, 8) << ":\n";
+    OS << indent(Space) << "Version: " << RS.Version << ":\n";
+    OS << indent(Space) << "NumParameters: " << RS.NumParameters << ":\n";
+    OS << indent(Space) << "RootParametersOffset: " << RS.RootParametersOffset
        << ":\n";
-    OS << indent(Space) << "NumStaticSamplers: " << RSD.NumStaticSamplers
+    OS << indent(Space) << "NumStaticSamplers: " << RS.NumStaticSamplers
        << ":\n";
-    OS << indent(Space) << "StaticSamplersOffset: " << RSD.StaticSamplersOffset
+    OS << indent(Space) << "StaticSamplersOffset: " << RS.StaticSamplersOffset
        << ":\n";
     Space--;
     // end root signature header