Revert r129846; it's breaking a buildbot. See

http://google1.osuosl.org:8011/builders/llvm-x86_64-linux-checks/builds/825/steps/test.llvm.stage2/logs/st.ll



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@129869 91177308-0d34-0410-b5e6-96231b3b80d8

lib/Target/PTX/PTXMachineFunctionInfo.h

@@ -42,6 +42,7 @@ public:
   void setRetReg(unsigned reg) { reg_ret = reg; }
 
   void doneAddArg(void) {
+    std::sort(reg_arg.begin(), reg_arg.end());
     _isDoneAddArg = true;
   }
   void doneAddLocalVar(void) {