PTX: Let LLVM use loads/stores for all mem* intrinsics, instead of relying on custom implementations.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@144551 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Target/PTX/PTXISelLowering.cpp b/lib/Target/PTX/PTXISelLowering.cpp
index 7f55871..17191fb 100644
--- a/lib/Target/PTX/PTXISelLowering.cpp
+++ b/lib/Target/PTX/PTXISelLowering.cpp
@@ -47,6 +47,11 @@
   setBooleanVectorContents(ZeroOrOneBooleanContent); // FIXME: Is this correct?
   setMinFunctionAlignment(2);
 
+  // Let LLVM use loads/stores for all mem* operations
+  maxStoresPerMemcpy  = 4096;
+  maxStoresPerMemmove = 4096;
+  maxStoresPerMemset  = 4096;
+
   ////////////////////////////////////
   /////////// Expansion //////////////
   ////////////////////////////////////