Index: llvm/docs/LangRef.rst
===================================================================
--- llvm/docs/LangRef.rst
+++ llvm/docs/LangRef.rst
@@ -4892,7 +4892,8 @@
      nothing that ensures that happens, is there?
 
 - ``I``: Print the letter 'i' if the operand is an integer constant, otherwise
-  nothing. Used to print 'addi' vs 'add' instructions.
+  nothing. Used to print 'addi' vs 'add' instructions. (NOTE: This will currently
+  always print nothing)
 - ``y``: For a memory operand, prints formatter for a two-register X-form
   instruction. (Currently always prints ``r0,OPERAND``).
 - ``U``: Prints 'u' if the memory operand is an update form, and nothing
Index: llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
===================================================================
--- llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
+++ llvm/lib/Target/PowerPC/PPCAsmPrinter.cpp
@@ -359,6 +359,7 @@
       O << "0, ";
       printOperand(MI, OpNo, O);
       return false;
+    case 'I': // Print 'i' for integer constant.
     case 'U': // Print 'u' for update form.
     case 'X': // Print 'x' for indexed form.
       // FIXME: Currently for PowerPC memory operands are always loaded