1 files changed, 3 insertions, 20 deletions

diff --git a/llvm/lib/Target/DirectX/DXILPrepare.cpp b/llvm/lib/Target/DirectX/DXILPrepare.cpp
index 703a9e5..c8866bf 100644
--- a/llvm/lib/Target/DirectX/DXILPrepare.cpp
+++ b/llvm/lib/Target/DirectX/DXILPrepare.cpp
@@ -24,7 +24,6 @@
 #include "llvm/IR/AttributeMask.h"
 #include "llvm/IR/IRBuilder.h"
 #include "llvm/IR/Instruction.h"
-#include "llvm/IR/IntrinsicInst.h"
 #include "llvm/IR/Module.h"
 #include "llvm/InitializePasses.h"
 #include "llvm/Pass.h"
@@ -240,11 +239,6 @@ public:
       for (size_t Idx = 0, End = F.arg_size(); Idx < End; ++Idx)
         F.removeParamAttrs(Idx, AttrMask);
 
-      // Lifetime intrinsics in LLVM 3.7 do not have the memory FnAttr
-      if (Intrinsic::ID IID = F.getIntrinsicID();
-          IID == Intrinsic::lifetime_start || IID == Intrinsic::lifetime_end)
-        F.removeFnAttr(Attribute::Memory);
-
       for (auto &BB : F) {
         IRBuilder<> Builder(&BB);
         for (auto &I : make_early_inc_range(BB)) {
@@ -253,7 +247,7 @@ public:
 
           // Emtting NoOp bitcast instructions allows the ValueEnumerator to be
           // unmodified as it reserves instruction IDs during contruction.
-          if (auto *LI = dyn_cast<LoadInst>(&I)) {
+          if (auto LI = dyn_cast<LoadInst>(&I)) {
             if (Value *NoOpBitcast = maybeGenerateBitcast(
                     Builder, PointerTypes, I, LI->getPointerOperand(),
                     LI->getType())) {
@@ -263,7 +257,7 @@ public:
             }
             continue;
           }
-          if (auto *SI = dyn_cast<StoreInst>(&I)) {
+          if (auto SI = dyn_cast<StoreInst>(&I)) {
             if (Value *NoOpBitcast = maybeGenerateBitcast(
                     Builder, PointerTypes, I, SI->getPointerOperand(),
                     SI->getValueOperand()->getType())) {
@@ -274,7 +268,7 @@ public:
             }
             continue;
           }
-          if (auto *GEP = dyn_cast<GetElementPtrInst>(&I)) {
+          if (auto GEP = dyn_cast<GetElementPtrInst>(&I)) {
             if (Value *NoOpBitcast = maybeGenerateBitcast(
                     Builder, PointerTypes, I, GEP->getPointerOperand(),
                     GEP->getSourceElementType()))
@@ -286,17 +280,6 @@ public:
             CB->removeRetAttrs(AttrMask);
             for (size_t Idx = 0, End = CB->arg_size(); Idx < End; ++Idx)
               CB->removeParamAttrs(Idx, AttrMask);
-            // LLVM 3.7 Lifetime intrinics require an i8* pointer operand, so we
-            // insert a bitcast here to ensure that is the case
-            if (isa<LifetimeIntrinsic>(CB)) {
-              Value *PtrOperand = CB->getArgOperand(1);
-              Builder.SetInsertPoint(CB);
-              PointerType *PtrTy = cast<PointerType>(PtrOperand->getType());
-              Value *NoOpBitcast = Builder.Insert(
-                  CastInst::Create(Instruction::BitCast, PtrOperand,
-                                   Builder.getPtrTy(PtrTy->getAddressSpace())));
-              CB->setArgOperand(1, NoOpBitcast);
-            }
             continue;
           }
         }