'append_cmd' should split its argument.

Makes '(append_cmd "-foo a b c")' work.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@65623 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/utils/TableGen/LLVMCConfigurationEmitter.cpp b/utils/TableGen/LLVMCConfigurationEmitter.cpp
index fc166ef..bb4321c 100644
--- a/utils/TableGen/LLVMCConfigurationEmitter.cpp
+++ b/utils/TableGen/LLVMCConfigurationEmitter.cpp
@@ -1422,7 +1422,12 @@
     if (ActionName == "append_cmd") {
       checkNumberOfArguments(&Dag, 1);
       const std::string& Cmd = InitPtrToString(Dag.getArg(0));
-      O << IndentLevel << "vec.push_back(\"" << Cmd << "\");\n";
+      StrVector Out;
+      llvm::SplitString(Cmd, Out);
+
+      for (StrVector::const_iterator B = Out.begin(), E = Out.end();
+           B != E; ++B)
+        O << IndentLevel << "vec.push_back(\"" << *B << "\");\n";
     }
     else if (ActionName == "error") {
       O << IndentLevel << "throw std::runtime_error(\"" <<