ptx: add passing parameter to kernel functions

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@125279 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PTX/PTXMachineFunctionInfo.h b/lib/Target/PTX/PTXMachineFunctionInfo.h
index 6fbad5f..56d044b 100644
--- a/lib/Target/PTX/PTXMachineFunctionInfo.h
+++ b/lib/Target/PTX/PTXMachineFunctionInfo.h
@@ -31,8 +31,8 @@
 public:
   PTXMachineFunctionInfo(MachineFunction &MF)
     : is_kernel(false), reg_ret(PTX::NoRegister), _isDoneAddArg(false) {
-      reg_arg.reserve(32);
-      reg_local_var.reserve(64);
+      reg_arg.reserve(8);
+      reg_local_var.reserve(32);
     }
 
   void setKernel(bool _is_kernel=true) { is_kernel = _is_kernel; }