diff --git a/llvm/lib/Target/PowerPC/PPCCallingConv.td b/llvm/lib/Target/PowerPC/PPCCallingConv.td
index d33b5574d1d4..9e31b5a6690c 100644
--- a/llvm/lib/Target/PowerPC/PPCCallingConv.td
+++ b/llvm/lib/Target/PowerPC/PPCCallingConv.td
@@ -35,7 +35,7 @@ def RetCC_PPC : CallingConv<[
 //===----------------------------------------------------------------------===//
 // PowerPC Argument Calling Conventions
 //===----------------------------------------------------------------------===//
-
+/*
 def CC_PPC : CallingConv<[
   // The first 8 integer arguments are passed in integer registers.
   CCIfType<[i32], CCAssignToReg<[R3, R4, R5, R6, R7, R8, R9, R10]>>,
@@ -61,3 +61,5 @@ def CC_PPC : CallingConv<[
               CCAssignToStack<16, 16>>*/
 ]>;
 
+*/
+