Index: include/llvm/IR/Module.h
===================================================================
--- include/llvm/IR/Module.h
+++ include/llvm/IR/Module.h
@@ -838,6 +838,16 @@
   Metadata *getProfileSummary();
   /// @}
 
+  /// @name Utility functions for querying and setting if PLT must be avoided.
+
+  /// \brief Returns true if PLT should be avoided for RTLib calls.
+  bool getRtLibUseGOT() const;
+
+  /// \brief Set that PLT should be avoid for RTLib calls.
+  void setRtLibUseGOT();
+  /// @}
+
+
   /// Take ownership of the given memory buffer.
   void setOwnedMemoryBuffer(std::unique_ptr<MemoryBuffer> MB);
 };
Index: lib/IR/Module.cpp
===================================================================
--- lib/IR/Module.cpp
+++ lib/IR/Module.cpp
@@ -510,6 +510,19 @@
   OwnedMemoryBuffer = std::move(MB);
 }
 
+bool Module::getRtLibUseGOT() const {
+  auto *Val = cast_or_null<ConstantAsMetadata>(getModuleFlag("RtLibUseGOT"));
+
+  if (Val && (cast<ConstantInt>(Val->getValue())->getZExtValue() > 0))
+    return true;
+
+  return false;
+}
+
+void Module::setRtLibUseGOT() {
+  addModuleFlag(ModFlagBehavior::Max, "RtLibUseGOT", 1);
+}
+
 GlobalVariable *llvm::collectUsedGlobalVariables(
     const Module &M, SmallPtrSetImpl<GlobalValue *> &Set, bool CompilerUsed) {
   const char *Name = CompilerUsed ? "llvm.compiler.used" : "llvm.used";
Index: lib/Target/X86/X86ISelLowering.cpp
===================================================================
--- lib/Target/X86/X86ISelLowering.cpp
+++ lib/Target/X86/X86ISelLowering.cpp
@@ -3756,11 +3756,23 @@
     }
   } else if (ExternalSymbolSDNode *S = dyn_cast<ExternalSymbolSDNode>(Callee)) {
     const Module *Mod = DAG.getMachineFunction().getFunction().getParent();
-    unsigned char OpFlags =
-        Subtarget.classifyGlobalFunctionReference(nullptr, *Mod);
+    // If PLT must be avoided then the call should be via GOTPCREL.
+    unsigned char OpFlags = X86II::MO_GOTPCREL;
+
+    if (!Mod->getRtLibUseGOT()) {
+      OpFlags = Subtarget.classifyGlobalFunctionReference(nullptr, *Mod);
+    }
 
     Callee = DAG.getTargetExternalSymbol(
         S->getSymbol(), getPointerTy(DAG.getDataLayout()), OpFlags);
+
+    if (OpFlags == X86II::MO_GOTPCREL) {
+      Callee = DAG.getNode(X86ISD::WrapperRIP, dl,
+          getPointerTy(DAG.getDataLayout()), Callee);
+      Callee = DAG.getLoad(
+          getPointerTy(DAG.getDataLayout()), dl, DAG.getEntryNode(), Callee,
+          MachinePointerInfo::getGOT(DAG.getMachineFunction()));
+    }
   } else if (Subtarget.isTarget64BitILP32() &&
              Callee->getValueType(0) == MVT::i32) {
     // Zero-extend the 32-bit Callee address into a 64-bit according to x32 ABI
Index: test/CodeGen/X86/no-plt.ll
===================================================================
--- test/CodeGen/X86/no-plt.ll
+++ test/CodeGen/X86/no-plt.ll
@@ -3,7 +3,23 @@
 ; RUN: llc < %s -mcpu=generic -mtriple=x86_64-linux-gnu \
 ; RUN:   | FileCheck -check-prefix=X64 %s
 
-define i32 @main() #0 {
+; Function Attrs: noinline nounwind uwtable
+define void @memset_call(i8* nocapture %a, i8 %c, i32 %n) local_unnamed_addr #0 {
+; X64: callq *memset@GOTPCREL(%rip)
+entry:
+  call void @llvm.memset.p0i8.i32(i8* %a, i8 %c, i32 %n, i1 false)
+  ret void
+}
+
+; Function Attrs: noinline nounwind uwtable
+define void @memcpy_call(i8* nocapture %a, i8* nocapture readonly %b, i64 %n) local_unnamed_addr #0 {
+; X64: callq *memcpy@GOTPCREL(%rip)
+entry:
+  call void @llvm.memcpy.p0i8.p0i8.i64(i8* %a, i8* %b, i64 %n, i32 1, i1 false)
+  ret void
+}
+
+define i32 @main() #1 {
 ; X64: callq *_Z3foov@GOTPCREL(%rip)
 ; X64: callq _Z3barv
 ; X64: callq _Z3bazv
@@ -18,13 +34,21 @@
 }
 
 ; Function Attrs: nonlazybind
-declare i32 @_Z3foov() #1
+declare i32 @_Z3foov() #2
 
-declare i32 @_Z3barv() #2
+declare i32 @_Z3barv() #3
 
 ; Function Attrs: nonlazybind
-declare hidden i32 @_Z3bazv() #3
+declare hidden i32 @_Z3bazv() #4
+
+; Function Attrs: argmemonly nounwind
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1)
+; Function Attrs: argmemonly nounwind
+declare void @llvm.memset.p0i8.i32(i8* nocapture, i8, i32, i1) #0
+
 
+attributes #2 = { nonlazybind }
+attributes #4 = { nonlazybind }
 
-attributes #1 = { nonlazybind }
-attributes #3 = { nonlazybind }
+!llvm.module.flags = !{!1}
+!1 = !{i32 7, !"RtLibUseGOT", i32 1}