replace a loop with a constant time check.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@45875 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/lib/Transforms/IPO/ArgumentPromotion.cpp b/lib/Transforms/IPO/ArgumentPromotion.cpp
index 91b3766fa20e63bafe8c49a5e077f62cee90d503..071d0e92cbbeee9eeba8257b9ddbf139cde00804 100644 (file)
--- a/lib/Transforms/IPO/ArgumentPromotion.cpp
+++ b/lib/Transforms/IPO/ArgumentPromotion.cpp
@@ -125,9 +125,8 @@ bool ArgPromotion::PromoteArguments(CallGraphNode *CGN) {
 
     // Ensure that this call site is CALLING the function, not passing it as
     // an argument.
-    for (CallSite::arg_iterator AI = CS.arg_begin(), E = CS.arg_end();
-         AI != E; ++AI)
-      if (*AI == F) return false;   // Passing the function address in!
+    if (UI.getOperandNo() != 0) 
+      return false;
   }
 
   // Check to see which arguments are promotable.  If an argument is not