Explain the return value of CCAssignFn.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117854 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/include/llvm/CodeGen/CallingConvLower.h b/include/llvm/CodeGen/CallingConvLower.h
index 6fb843641dcd55d6efec3f108caf16a4d5585b07..a47512c4b0ef64c92a2d7951607beb4761a7c848 100644 (file)
--- a/include/llvm/CodeGen/CallingConvLower.h
+++ b/include/llvm/CodeGen/CallingConvLower.h
@@ -129,7 +129,7 @@ public:
 };
 
 /// CCAssignFn - This function assigns a location for Val, updating State to
-/// reflect the change.
+/// reflect the change.  It returns 'true' if it failed to handle Val.
 typedef bool CCAssignFn(unsigned ValNo, EVT ValVT,
                         EVT LocVT, CCValAssign::LocInfo LocInfo,
                         ISD::ArgFlagsTy ArgFlags, CCState &State);