[SelectionDAG] Fix misplaced commas in operand bundle errors

Author: frasercrmck

llvm/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp

@@ -846,9 +846,9 @@ static void failForInvalidBundles(const CallBase &I, StringRef Name,
                                   ArrayRef<uint32_t> AllowedBundles) {
   if (I.hasOperandBundlesOtherThan(AllowedBundles)) {
     std::string Error;
+    bool First = true;
     for (unsigned i = 0, e = I.getNumOperandBundles(); i != e; ++i) {
       OperandBundleUse U = I.getOperandBundleAt(i);
-      bool First = true;
       if (is_contained(AllowedBundles, U.getTagID()))
         continue;
       if (!First)

llvm/test/CodeGen/X86/invalid-operand-bundle-call.ll

@@ -1,10 +1,10 @@
 ; RUN: not llc -mtriple=x86_64-unknown-linux-gnu < %s 2>&1 | FileCheck %s
 
-; CHECK: LLVM ERROR: cannot lower calls with arbitrary operand bundles: foo
+; CHECK: LLVM ERROR: cannot lower calls with arbitrary operand bundles: foo, bar
 
 declare void @g()
 
 define void @f(i32 %arg) {
-  call void @g() [ "foo"(i32 %arg) ]
+  call void @g() [ "foo"(i32 %arg), "bar"(i32 %arg) ]
   ret void
 }