Implement the -fno-builtin option in the front-end, not in the back-end.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@56900 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
index 37297d6..eba3a2a 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAG.cpp
@@ -41,11 +41,6 @@
 #include <cmath>
 using namespace llvm;
 
-static cl::opt<bool>
-NoBuiltin("no-builtin", cl::init(false),
-           cl::desc("Don't recognize built-in functions that do not begin "
-                    "with `__builtin_' as prefix"));
-
 /// makeVTList - Return an instance of the SDVTList struct initialized with the
 /// specified members.
 static SDVTList makeVTList(const MVT *VTs, unsigned NumVTs) {
@@ -3195,7 +3190,7 @@
   // code. If the target chooses to do this, this is the next best.
   SDValue Result =
     TLI.EmitTargetCodeForMemset(*this, Chain, Dst, Src, Size, Align,
-                                DstSV, DstSVOff, NoBuiltin);
+                                DstSV, DstSVOff);
   if (Result.getNode())
     return Result;