Change std::{lower,upper}_bound to llvm::{lower,upper}_bound or llvm::partition_point. NFC

llvm-svn: 365006
diff --git a/clang/lib/CodeGen/CGBuiltin.cpp b/clang/lib/CodeGen/CGBuiltin.cpp
index 287e691..8022cdc 100644
--- a/clang/lib/CodeGen/CGBuiltin.cpp
+++ b/clang/lib/CodeGen/CGBuiltin.cpp
@@ -5076,8 +5076,7 @@
   }
 #endif
 
-  const NeonIntrinsicInfo *Builtin =
-      std::lower_bound(IntrinsicMap.begin(), IntrinsicMap.end(), BuiltinID);
+  const NeonIntrinsicInfo *Builtin = llvm::lower_bound(IntrinsicMap, BuiltinID);
 
   if (Builtin != IntrinsicMap.end() && Builtin->BuiltinID == BuiltinID)
     return Builtin;