diff --git a/lib/Transforms/IPO/FunctionAttrs.cpp b/lib/Transforms/IPO/FunctionAttrs.cpp
index 39f48145af1..9e117daa68e 100644
--- a/lib/Transforms/IPO/FunctionAttrs.cpp
+++ b/lib/Transforms/IPO/FunctionAttrs.cpp
@@ -26,7 +26,6 @@
 #include "llvm/Analysis/AliasAnalysis.h"
 #include "llvm/Analysis/CallGraph.h"
 #include "llvm/Analysis/CaptureTracking.h"
-#include "llvm/Analysis/MemoryBuiltins.h"
 #include "llvm/ADT/SmallSet.h"
 #include "llvm/ADT/Statistic.h"
 #include "llvm/ADT/UniqueVector.h"
@@ -203,10 +202,6 @@ bool FunctionAttrs::AddReadAttrs(const CallGraphSCC &SCC) {
         // Writes memory.  Just give up.
         return false;
 
-      if (isMalloc(I))
-        // malloc claims not to write memory!  PR3754.
-        return false;
-
       // If this instruction may read memory, remember that.
       ReadsMemory |= I->mayReadFromMemory();
     }