File llvm38-support.patch of Package beignet

Description: Backend Add support for LLVM release 3.8

Ubuntu mesa uses 3.8, and it is preferred to use the same LLVM for all ICDs
to prevent crashes when they are used together:
http://lists.alioth.debian.org/pipermail/pkg-opencl-devel/Week-of-Mon-20160418/000963.html

Origin: upstream e529586d062450007acf942fc7c73269db5a0fbe
Author: Pan Xiuli

diff --git a/backend/src/backend/gen_program.cpp b/backend/src/backend/gen_program.cpp
index 4577990..2ee1d32 100644
--- a/backend/src/backend/gen_program.cpp
+++ b/backend/src/backend/gen_program.cpp
@@ -407,7 +407,11 @@ namespace gbe {
     using namespace gbe;
     char* errMsg;
     if(((GenProgram*)dst_program)->module == NULL){
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 8
+      ((GenProgram*)dst_program)->module = llvm::CloneModule((llvm::Module*)((GenProgram*)src_program)->module).release();
+#else
       ((GenProgram*)dst_program)->module = llvm::CloneModule((llvm::Module*)((GenProgram*)src_program)->module);
+#endif
       errSize = 0;
     }else{
       llvm::Module* src = (llvm::Module*)((GenProgram*)src_program)->module;
diff --git a/backend/src/backend/program.cpp b/backend/src/backend/program.cpp
index 145eb0f..e0ba6b4 100644
--- a/backend/src/backend/program.cpp
+++ b/backend/src/backend/program.cpp
@@ -119,7 +119,11 @@ namespace gbe {
     ir::Unit *unit = new ir::Unit();
     llvm::Module * cloned_module = NULL;
     if(module){
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 8
+      cloned_module = llvm::CloneModule((llvm::Module*)module).release();
+#else
       cloned_module = llvm::CloneModule((llvm::Module*)module);
+#endif
     }
     if (llvmToGen(*unit, fileName, module, optLevel, OCL_STRICT_CONFORMANCE) == false) {
       if (fileName)
diff --git a/backend/src/llvm/ExpandConstantExpr.cpp b/backend/src/llvm/ExpandConstantExpr.cpp
index c6f57b8..e9ec3ab 100644
--- a/backend/src/llvm/ExpandConstantExpr.cpp
+++ b/backend/src/llvm/ExpandConstantExpr.cpp
@@ -115,7 +115,7 @@ static Value *expandConstantVector(Instruction *InsertPt, ConstantVector *CV) {
   Type *IntTy = IntegerType::get(CV->getContext(), 32);
 
   BasicBlock::iterator InsertPos(InsertPt);
-  IRBuilder<> IRB(InsertPos);
+  IRBuilder<> IRB(&*InsertPos);
   Value *vec = UndefValue::get(CV->getType());
   for (int i = 0; i < elemNum; i++) {
     Value *idx = ConstantInt::get(IntTy, i);
@@ -177,7 +177,7 @@ bool ExpandConstantExpr::runOnFunction(Function &Func) {
     for (BasicBlock::InstListType::iterator Inst = BB->begin(), E = BB->end();
          Inst != E;
          ++Inst) {
-      Modified |= expandInstruction(Inst);
+      Modified |= expandInstruction(&*Inst);
     }
   }
   return Modified;
diff --git a/backend/src/llvm/ExpandLargeIntegers.cpp b/backend/src/llvm/ExpandLargeIntegers.cpp
index 20fdda9..00987cb 100644
--- a/backend/src/llvm/ExpandLargeIntegers.cpp
+++ b/backend/src/llvm/ExpandLargeIntegers.cpp
@@ -388,7 +388,7 @@ static void convertInstruction(Instruction *Inst, ConversionState &State,
   // Set the insert point *after* Inst, so that any instructions inserted here
   // will be visited again. That allows iterative expansion of types > i128.
   BasicBlock::iterator InsertPos(Inst);
-  IRBuilder<> IRB(++InsertPos);
+  IRBuilder<> IRB(&*++InsertPos);
   StringRef Name = Inst->getName();
 
   if (PHINode *Phi = dyn_cast<PHINode>(Inst)) {
diff --git a/backend/src/llvm/ExpandUtils.cpp b/backend/src/llvm/ExpandUtils.cpp
index 801f969..a09d990 100644
--- a/backend/src/llvm/ExpandUtils.cpp
+++ b/backend/src/llvm/ExpandUtils.cpp
@@ -101,7 +101,7 @@ namespace llvm {
   Function *RecreateFunction(Function *Func, FunctionType *NewType) {
     Function *NewFunc = Function::Create(NewType, Func->getLinkage());
     NewFunc->copyAttributesFrom(Func);
-    Func->getParent()->getFunctionList().insert(Func, NewFunc);
+    Func->getParent()->getFunctionList().insert(ilist_iterator<Function>(Func), NewFunc);
     NewFunc->takeName(Func);
     NewFunc->getBasicBlockList().splice(NewFunc->begin(),
                                         Func->getBasicBlockList());
diff --git a/backend/src/llvm/PromoteIntegers.cpp b/backend/src/llvm/PromoteIntegers.cpp
index b65440f..8759287 100644
--- a/backend/src/llvm/PromoteIntegers.cpp
+++ b/backend/src/llvm/PromoteIntegers.cpp
@@ -615,7 +615,7 @@ bool PromoteIntegers::runOnFunction(Function &F) {
   // Don't support changing the function arguments. This should not be
   // generated by clang.
   for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E; ++I) {
-    Value *Arg = I;
+    Value *Arg = &*I;
     if (shouldConvert(Arg)) {
       errs() << "Function " << F.getName() << ": " << *Arg << "\n";
       llvm_unreachable("Function has illegal integer/pointer argument");
@@ -626,7 +626,7 @@ bool PromoteIntegers::runOnFunction(Function &F) {
   bool Modified = false;
   for (Function::iterator FI = F.begin(), FE = F.end(); FI != FE; ++FI) {
     for (BasicBlock::iterator BBI = FI->begin(), BBE = FI->end(); BBI != BBE;) {
-      Instruction *Inst = BBI++;
+      Instruction *Inst = &*BBI++;
       // Only attempt to convert an instruction if its result or any of its
       // operands are illegal.
       bool ShouldConvert = shouldConvert(Inst);
diff --git a/backend/src/llvm/StripAttributes.cpp b/backend/src/llvm/StripAttributes.cpp
index e6df312..3bf3853 100644
--- a/backend/src/llvm/StripAttributes.cpp
+++ b/backend/src/llvm/StripAttributes.cpp
@@ -98,7 +98,7 @@ bool StripAttributes::runOnFunction(Function &Func) {
        BB != E; ++BB) {
     for (BasicBlock::iterator Inst = BB->begin(), E = BB->end();
          Inst != E; ++Inst) {
-      CallSite Call(Inst);
+      CallSite Call(&*Inst);
       if (Call)
         Call.setCallingConv(CallingConv::C);
     }
diff --git a/backend/src/llvm/llvm_bitcode_link.cpp b/backend/src/llvm/llvm_bitcode_link.cpp
index 56205bb..10fccf6 100644
--- a/backend/src/llvm/llvm_bitcode_link.cpp
+++ b/backend/src/llvm/llvm_bitcode_link.cpp
@@ -68,8 +68,9 @@ namespace gbe
     return oclLib;
   }
 
-  static bool materializedFuncCall(Module& src, Module& lib, llvm::Function &KF, std::set<std::string>& MFS)
-  {
+  static bool materializedFuncCall(Module& src, Module& lib, llvm::Function& KF,
+                                   std::set<std::string>& MFS,
+                                   std::vector<GlobalValue *>&Gvs) {
     bool fromSrc = false;
     for (llvm::Function::iterator B = KF.begin(), BE = KF.end(); B != BE; B++) {
       for (BasicBlock::iterator instI = B->begin(),
@@ -112,9 +113,10 @@ namespace gbe
             printf("Can not materialize the function: %s, because %s\n", fnName.c_str(), EC.message().c_str());
             return false;
           }
+          Gvs.push_back((GlobalValue *)newMF);
 #endif
         }
-        if (!materializedFuncCall(src, lib, *newMF, MFS))
+        if (!materializedFuncCall(src, lib, *newMF, MFS, Gvs))
           return false;
 
       }
@@ -128,6 +130,7 @@ namespace gbe
   {
     LLVMContext& ctx = mod->getContext();
     std::set<std::string> materializedFuncs;
+    std::vector<GlobalValue *> Gvs;
     Module* clonedLib = createOclBitCodeModule(ctx, strictMath);
     assert(clonedLib && "Can not create the beignet bitcode\n");
 
@@ -173,10 +176,11 @@ namespace gbe
       if (!isKernelFunction(*SF)) continue;
       kernels.push_back(SF->getName().data());
 
-      if (!materializedFuncCall(*mod, *clonedLib, *SF, materializedFuncs)) {
+      if (!materializedFuncCall(*mod, *clonedLib, *SF, materializedFuncs, Gvs)) {
         delete clonedLib;
         return NULL;
       }
+      Gvs.push_back((GlobalValue *)&*SF);
     }
 
     if (kernels.empty()) {
@@ -215,14 +219,43 @@ namespace gbe
       }
 #endif
 
-      if (!materializedFuncCall(*mod, *clonedLib, *newMF, materializedFuncs)) {
+      if (!materializedFuncCall(*mod, *clonedLib, *newMF, materializedFuncs, Gvs)) {
         delete clonedLib;
         return NULL;
       }
 
+      Gvs.push_back((GlobalValue *)newMF);
       kernels.push_back(f);
     }
 
+  /* The llvm 3.8 now has a strict materialized check for all value by checking
+   * module is materialized. If we want to use library as old style that just
+   * materialize what we need, we need to remove what we did not need before
+   * materialize all of the module. To do this, we need all of the builtin
+   * funcitons and what are needed from the kernel functions, these functions
+   * are materalized and are recorded in Gvs, the GlobalValue like PI are also
+   * needed and are added. Now we could not use use_empty to check if the GVs
+   * are needed before the module is marked as all materialized, so we just
+   * materialize all of them as there are only 7 GVs. Then we use GVExtraction
+   * pass to extract the functions and values in Gvs from the library module.
+   * After extract what we need and remove what we do not need, we use 
+   * materializeAll to mark the module as materialized. */
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >=8
+    /* Get all GlobalValue from module. */
+    Module::GlobalListType &GVlist = clonedLib->getGlobalList();
+    for(Module::global_iterator GVitr = GVlist.begin();GVitr != GVlist.end();++GVitr) {
+      GlobalValue * GV = &*GVitr;
+      clonedLib->materialize(GV);
+      Gvs.push_back(GV);
+    }
+    llvm::legacy::PassManager Extract;
+    /* Extract all values we need using GVExtractionPass. */
+    Extract.add(createGVExtractionPass(Gvs, false));
+    Extract.run(*clonedLib);
+    /* Mark the library module as materialized for later use. */
+    clonedLib->materializeAll();
+#endif
+
     /* the SPIR binary datalayout maybe different with beignet's bitcode */
     if(clonedLib->getDataLayout() != mod->getDataLayout())
       mod->setDataLayout(clonedLib->getDataLayout());
diff --git a/backend/src/llvm/llvm_gen_backend.cpp b/backend/src/llvm/llvm_gen_backend.cpp
index 17b65a1..c85133d 100644
--- a/backend/src/llvm/llvm_gen_backend.cpp
+++ b/backend/src/llvm/llvm_gen_backend.cpp
@@ -1120,7 +1120,7 @@ namespace gbe
       llvmInfo.typeName= (cast<MDString>(typeNameNode->getOperand(1 + argID)))->getString();
       bool isImage = llvmInfo.isImageType();
       if (I->getType()->isPointerTy() || isImage) {
-        BtiMap.insert(std::make_pair(I, getNewBti(I, isImage)));
+        BtiMap.insert(std::make_pair(&*I, getNewBti(&*I, isImage)));
       }
     }
 
@@ -1234,7 +1234,7 @@ namespace gbe
     // function argument
     for (Function::arg_iterator I = F.arg_begin(), E = F.arg_end(); I != E; ++I) {
       if (I->getType()->isPointerTy()) {
-        findPointerEscape(I, mixedPtr, true, revisit);
+        findPointerEscape(&*I, mixedPtr, true, revisit);
       }
     }
     // alloca
@@ -1283,7 +1283,7 @@ namespace gbe
       while (isa<AllocaInst>(bbIter)) ++bbIter;
 
       IRBuilder<> Builder(&entry);
-      Builder.SetInsertPoint(bbIter);
+      Builder.SetInsertPoint(&*bbIter);
 
       PointerType * AITy = cast<AllocaInst>(base)->getType();
       Value * btiArray = Builder.CreateAlloca(AITy->getElementType(), ArraySize, base->getName() + ".bti");
@@ -1708,7 +1708,7 @@ namespace gbe
   }
 
   void GenWriter::simplifyTerminator(BasicBlock *bb) {
-    Value *value = --bb->end();
+    Value *value = bb->getTerminator();
     BranchInst *I = NULL;
     if ((I = dyn_cast<BranchInst>(value)) != NULL) {
       if (I->isConditional() == false)
@@ -1938,12 +1938,12 @@ namespace gbe
         }
 
         // function arguments are uniform values.
-        this->newRegister(I, NULL, true);
+        this->newRegister(&*I, NULL, true);
 
         // add support for vector argument.
         if(type->isVectorTy()) {
           VectorType *vectorType = cast<VectorType>(type);
-          ir::Register reg = getRegister(I, 0);
+          ir::Register reg = getRegister(&*I, 0);
           Type *elemType = vectorType->getElementType();
           const uint32_t elemSize = getTypeByteSize(unit, elemType);
           const uint32_t elemNum = vectorType->getNumElements();
@@ -1953,7 +1953,7 @@ namespace gbe
           ir::Function& fn = ctx.getFunction();
           for(uint32_t i=1; i < elemNum; i++) {
             ir::PushLocation argLocation(fn, argID, elemSize*i);
-            reg = getRegister(I, i);
+            reg = getRegister(&*I, i);
             ctx.appendPushedConstant(reg, argLocation);  //add to push map for reg alloc
           }
           continue;
@@ -1961,10 +1961,10 @@ namespace gbe
 
         GBE_ASSERTM(isScalarType(type) == true,
                     "vector type in the function argument is not supported yet");
-        const ir::Register reg = getRegister(I);
+        const ir::Register reg = getRegister(&*I);
         if (llvmInfo.isImageType()) {
           ctx.input(argName, ir::FunctionArgument::IMAGE, reg, llvmInfo, 4, 4, 0);
-          ctx.getFunction().getImageSet()->append(reg, &ctx, BtiMap.find(I)->second);
+          ctx.getFunction().getImageSet()->append(reg, &ctx, BtiMap.find(&*I)->second);
           collectImageArgs(llvmInfo.accessQual, imageArgsInfo);
           continue;
         }
@@ -1997,7 +1997,7 @@ namespace gbe
             const uint32_t align = getAlignmentByte(unit, pointed);
               switch (addrSpace) {
               case ir::MEM_GLOBAL:
-                ctx.input(argName, ir::FunctionArgument::GLOBAL_POINTER, reg, llvmInfo, ptrSize, align, BtiMap.find(I)->second);
+                ctx.input(argName, ir::FunctionArgument::GLOBAL_POINTER, reg, llvmInfo, ptrSize, align, BtiMap.find(&*I)->second);
               break;
               case ir::MEM_LOCAL:
                 ctx.input(argName, ir::FunctionArgument::LOCAL_POINTER, reg,  llvmInfo, ptrSize, align, BTI_LOCAL);
@@ -2665,12 +2665,12 @@ namespace gbe
 
     // First create all the labels (one per block) ...
     for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
-      this->newLabelIndex(BB);
+      this->newLabelIndex(&*BB);
 
     // Then, for all branch instructions that have conditions, see if we can
     // simplify the code by inverting condition code
     for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
-      this->simplifyTerminator(BB);
+      this->simplifyTerminator(&*BB);
 
     // gather loop info, which is useful for liveness analysis
     gatherLoopInfo(fn);
@@ -2678,7 +2678,7 @@ namespace gbe
     // ... then, emit the instructions for all basic blocks
     pass = PASS_EMIT_INSTRUCTIONS;
     for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
-      emitBasicBlock(BB);
+      emitBasicBlock(&*BB);
     ctx.endFunction();
 
     // Liveness can be shared when we optimized the immediates and the MOVs
@@ -3204,7 +3204,7 @@ namespace gbe
     Value *Callee = I.getCalledValue();
     GBE_ASSERT(ctx.getFunction().getProfile() == ir::PROFILE_OCL);
     GBE_ASSERT(isa<InlineAsm>(I.getCalledValue()) == false);
-    GBE_ASSERT(I.hasStructRetAttr() == false);
+    if(I.getNumArgOperands()) GBE_ASSERT(I.hasStructRetAttr() == false);
 
     // We only support a small number of intrinsics right now
     if (Function *F = I.getCalledFunction()) {
diff --git a/backend/src/llvm/llvm_includes.hpp b/backend/src/llvm/llvm_includes.hpp
index fed3a18..d2deb90 100644
--- a/backend/src/llvm/llvm_includes.hpp
+++ b/backend/src/llvm/llvm_includes.hpp
@@ -122,4 +122,9 @@
 
 #include <clang/CodeGen/CodeGenAction.h>
 
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >=8
+#include "llvm/Analysis/BasicAliasAnalysis.h"
+#include "llvm/Analysis/TypeBasedAliasAnalysis.h"
+#endif
+
 #endif /* __GBE_IR_LLVM_INCLUDES_HPP__ */
diff --git a/backend/src/llvm/llvm_intrinsic_lowering.cpp b/backend/src/llvm/llvm_intrinsic_lowering.cpp
index b35d1e6..c26e96a 100644
--- a/backend/src/llvm/llvm_intrinsic_lowering.cpp
+++ b/backend/src/llvm/llvm_intrinsic_lowering.cpp
@@ -73,7 +73,7 @@ namespace gbe {
         Constant* FCache = M->getOrInsertFunction(NewFn,
                                         FunctionType::get(RetTy, ParamTys, false));
 
-        IRBuilder<> Builder(CI->getParent(), CI);
+        IRBuilder<> Builder(CI->getParent(), BasicBlock::iterator(CI));
         SmallVector<Value *, 8> Args(ArgBegin, ArgEnd);
         CallInst *NewCI = Builder.CreateCall(FCache, Args);
         NewCI->setName(CI->getName());
@@ -90,12 +90,12 @@ namespace gbe {
         DataLayout TD(M);
         LLVMContext &Context = BB.getContext();
         for (BasicBlock::iterator DI = BB.begin(); DI != BB.end(); ) {
-          Instruction *Inst = DI++;
+          Instruction *Inst = &*DI++;
           CallInst* CI = dyn_cast<CallInst>(Inst);
           if(CI == NULL)
             continue;
 
-          IRBuilder<> Builder(&BB, CI);
+          IRBuilder<> Builder(&BB, BasicBlock::iterator(CI));
           // only support memcpy and memset
           if (Function *F = CI->getCalledFunction()) {
             const Intrinsic::ID intrinsicID = (Intrinsic::ID) F->getIntrinsicID();
diff --git a/backend/src/llvm/llvm_loadstore_optimization.cpp b/backend/src/llvm/llvm_loadstore_optimization.cpp
index 698fdc2..121f53d 100644
--- a/backend/src/llvm/llvm_loadstore_optimization.cpp
+++ b/backend/src/llvm/llvm_loadstore_optimization.cpp
@@ -35,13 +35,22 @@ namespace gbe {
     GenLoadStoreOptimization() : BasicBlockPass(ID) {}
 
     void getAnalysisUsage(AnalysisUsage &AU) const {
+#if LLVM_VERSION_MAJOR == 3 &&  LLVM_VERSION_MINOR >= 8
+      AU.addRequired<ScalarEvolutionWrapperPass>();
+      AU.addPreserved<ScalarEvolutionWrapperPass>();
+#else
       AU.addRequired<ScalarEvolution>();
       AU.addPreserved<ScalarEvolution>();
+#endif
       AU.setPreservesCFG();
     }
 
     virtual bool runOnBasicBlock(BasicBlock &BB) {
+#if LLVM_VERSION_MAJOR == 3 &&  LLVM_VERSION_MINOR >= 8
+      SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
+#else
       SE = &getAnalysis<ScalarEvolution>();
+#endif
       #if LLVM_VERSION_MINOR >= 7
         TD = &BB.getModule()->getDataLayout();
       #elif LLVM_VERSION_MINOR >= 5
@@ -159,9 +168,9 @@ namespace gbe {
                             bool isLoad) {
 
     BasicBlock::iterator stepForward = start;
-    if(!isSimpleLoadStore(start)) return stepForward;
+    if(!isSimpleLoadStore(&*start)) return stepForward;
 
-    merged.push_back(start);
+    merged.push_back(&*start);
 
     BasicBlock::iterator E = BB.end();
     BasicBlock::iterator J = ++start;
@@ -170,8 +179,8 @@ namespace gbe {
 
     for(unsigned ss = 0; J != E && ss <= maxLimit; ++ss, ++J) {
       if((isLoad && isa<LoadInst>(*J)) || (!isLoad && isa<StoreInst>(*J))) {
-        if(isLoadStoreCompatible(merged[merged.size()-1], J)) {
-          merged.push_back(J);
+        if(isLoadStoreCompatible(merged[merged.size()-1], &*J)) {
+          merged.push_back(&*J);
           stepForward = ++J;
         }
       } else if((isLoad && isa<StoreInst>(*J)) || (!isLoad && isa<LoadInst>(*J))) {
@@ -217,7 +226,7 @@ namespace gbe {
     for (BasicBlock::iterator BBI = BB.begin(), E = BB.end(); BBI != E;++BBI) {
       if(isa<LoadInst>(*BBI) || isa<StoreInst>(*BBI)) {
         bool isLoad = isa<LoadInst>(*BBI) ? true: false;
-        Type *ty = getValueType(BBI);
+        Type *ty = getValueType(&*BBI);
         if(ty->isVectorTy()) continue;
         // TODO Support DWORD/WORD/BYTE LOAD for store support DWORD only now.
         if (!(ty->isFloatTy() || ty->isIntegerTy(32) ||
diff --git a/backend/src/llvm/llvm_printf_parser.cpp b/backend/src/llvm/llvm_printf_parser.cpp
index 47688f7..4ae9eb0 100644
--- a/backend/src/llvm/llvm_printf_parser.cpp
+++ b/backend/src/llvm/llvm_printf_parser.cpp
@@ -635,7 +635,7 @@ error:
       Value* op0 = NULL;
       Value* val = NULL;
 
-      builder->SetInsertPoint(F.begin()->begin());// Insert the common var in the begin.
+      builder->SetInsertPoint(&*(F.begin()->begin()));// Insert the common var in the begin.
 
       /* FIXME: Because the OpenCL language do not support va macro, and we do not want
          to introduce the va_list, va_start and va_end into our code, we just simulate
diff --git a/backend/src/llvm/llvm_scalarize.cpp b/backend/src/llvm/llvm_scalarize.cpp
index 7ee5259..dbc3544 100644
--- a/backend/src/llvm/llvm_scalarize.cpp
+++ b/backend/src/llvm/llvm_scalarize.cpp
@@ -197,7 +197,7 @@ namespace gbe {
     /* set to insert new instructions after the specified instruction.*/
     void setAppendPoint(Instruction *insn)  {
       BasicBlock::iterator next(insn);
-      builder->SetInsertPoint(++next);
+      builder->SetInsertPoint(&*++next);
     }
 
     DenseMap<Value*, VectorValues> vectorVals;
@@ -759,7 +759,7 @@ namespace gbe {
       return;
     ReversePostOrderTraversal<Function*> rpot(&F);
     BasicBlock::iterator instI = (*rpot.begin())->begin();
-    builder->SetInsertPoint(instI);
+    builder->SetInsertPoint(&*instI);
 
     Function::arg_iterator I = F.arg_begin(), E = F.arg_end();
 
@@ -767,7 +767,7 @@ namespace gbe {
       Type *type = I->getType();
 
       if(type->isVectorTy())
-        extractFromVector(I);
+        extractFromVector(&*I);
     }
     return;
   }
@@ -804,11 +804,11 @@ namespace gbe {
     RPOTType rpot(&F);
     for (RPOTType::rpo_iterator bbI = rpot.begin(), bbE = rpot.end(); bbI != bbE; ++bbI) {
       for (BasicBlock::iterator instI = (*bbI)->begin(), instE = (*bbI)->end(); instI != instE; ++instI) {
-        bool scalarized = scalarize(instI);
+        bool scalarized = scalarize(&*instI);
         if (scalarized) {
           changed = true;
           // TODO: uncomment when done
-          deadList.push_back(instI);
+          deadList.push_back(&*instI);
         }
       }
     }
diff --git a/backend/src/llvm/llvm_to_gen.cpp b/backend/src/llvm/llvm_to_gen.cpp
index 24d4be7..b8d6a02 100644
--- a/backend/src/llvm/llvm_to_gen.cpp
+++ b/backend/src/llvm/llvm_to_gen.cpp
@@ -45,7 +45,6 @@ namespace gbe
   using namespace llvm;
 
 #if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 7
-  using namespace llvm::legacy;
   #define TARGETLIBRARY  TargetLibraryInfoImpl
 #else
   #define TARGETLIBRARY  TargetLibraryInfo
@@ -53,7 +52,11 @@ namespace gbe
 
   void runFuntionPass(Module &mod, TARGETLIBRARY *libraryInfo, const DataLayout &DL)
   {
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 7
+    legacy::FunctionPassManager FPM(&mod);
+#else
     FunctionPassManager FPM(&mod);
+#endif
 
 #if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 7
 #elif LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 6
@@ -74,8 +77,13 @@ namespace gbe
 #else
     FPM.add(new TargetLibraryInfo(*libraryInfo));
 #endif
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 8
+    FPM.add(createTypeBasedAAWrapperPass());
+    FPM.add(createBasicAAWrapperPass());
+#else
     FPM.add(createTypeBasedAliasAnalysisPass());
     FPM.add(createBasicAliasAnalysisPass());
+#endif
     FPM.add(createCFGSimplificationPass());
     FPM.add(createSROAPass());
     FPM.add(createEarlyCSEPass());
@@ -91,7 +99,11 @@ namespace gbe
 
   void runModulePass(Module &mod, TARGETLIBRARY *libraryInfo, const DataLayout &DL, int optLevel, bool strictMath)
   {
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 7
+    legacy::PassManager MPM;
+#else
     PassManager MPM;
+#endif
 
 #if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 7
 #elif LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 6
@@ -107,8 +119,13 @@ namespace gbe
 #else
     MPM.add(new TargetLibraryInfo(*libraryInfo));
 #endif
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 8
+    MPM.add(createTypeBasedAAWrapperPass());
+    MPM.add(createBasicAAWrapperPass());
+#else
     MPM.add(createTypeBasedAliasAnalysisPass());
     MPM.add(createBasicAliasAnalysisPass());
+#endif
     MPM.add(createIntrinsicLoweringPass());
     MPM.add(createStripAttributesPass());     // Strip unsupported attributes and calling conventions.
     MPM.add(createSamplerFixPass());
@@ -123,11 +140,19 @@ namespace gbe
     MPM.add(createBarrierNodupPass(false));   // remove noduplicate fnAttr before inlining.
     MPM.add(createFunctionInliningPass(20000));
     MPM.add(createBarrierNodupPass(true));    // restore noduplicate fnAttr after inlining.
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 8
+    MPM.add(createPostOrderFunctionAttrsPass());       // Set readonly/readnone attrs
+#else
     MPM.add(createFunctionAttrsPass());       // Set readonly/readnone attrs
+#endif
 
     //MPM.add(createScalarReplAggregatesPass(64, true, -1, -1, 64))
     if(optLevel > 0)
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 8
+      MPM.add(createSROAPass());
+#else
       MPM.add(createSROAPass(/*RequiresDomTree*/ false));
+#endif
     MPM.add(createEarlyCSEPass());              // Catch trivial redundancies
     MPM.add(createJumpThreadingPass());         // Thread jumps.
     MPM.add(createCorrelatedValuePropagationPass()); // Propagate conditionals
@@ -146,7 +171,11 @@ namespace gbe
     MPM.add(createLoopDeletionPass());          // Delete dead loops
     MPM.add(createLoopUnrollPass(1024)); //1024, 32, 1024, 512)); //Unroll loops
     if(optLevel > 0) {
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 8
+      MPM.add(createSROAPass());
+#else
       MPM.add(createSROAPass(/*RequiresDomTree*/ false));
+#endif
       MPM.add(createGVNPass());                 // Remove redundancies
     }
 #if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 5
@@ -157,7 +186,11 @@ namespace gbe
       MPM.add(createCustomLoopUnrollPass()); //1024, 32, 1024, 512)); //Unroll loops
       MPM.add(createLoopUnrollPass()); //1024, 32, 1024, 512)); //Unroll loops
       if(optLevel > 0) {
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 8
+        MPM.add(createSROAPass());
+#else
         MPM.add(createSROAPass(/*RequiresDomTree*/ false));
+#endif
         MPM.add(createGVNPass());                 // Remove redundancies
       }
     }
@@ -184,7 +217,15 @@ namespace gbe
   }
 
 
-#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 5
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 7
+#define OUTPUT_BITCODE(STAGE, MOD)  do {         \
+  legacy::PassManager passes__;           \
+   if (OCL_OUTPUT_LLVM_##STAGE) {                \
+     passes__.add(createPrintModulePass(*o));    \
+     passes__.run(MOD);                          \
+   }                                             \
+ }while(0)
+#elif LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 5
 #define OUTPUT_BITCODE(STAGE, MOD)  do {         \
    PassManager passes__;           \
    if (OCL_OUTPUT_LLVM_##STAGE) {                \
@@ -255,7 +296,11 @@ namespace gbe
 
     runFuntionPass(mod, libraryInfo, DL);
     runModulePass(mod, libraryInfo, DL, optLevel, strictMath);
+#if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 7
+    legacy::PassManager passes;
+#else
     PassManager passes;
+#endif
 #if LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 7
 #elif LLVM_VERSION_MAJOR == 3 && LLVM_VERSION_MINOR >= 6
     passes.add(new DataLayoutPass());
diff --git a/backend/src/llvm/llvm_unroll.cpp b/backend/src/llvm/llvm_unroll.cpp
index 6990e39..0f62bdc 100644
--- a/backend/src/llvm/llvm_unroll.cpp
+++ b/backend/src/llvm/llvm_unroll.cpp
@@ -47,8 +47,13 @@ namespace gbe {
         AU.addPreservedID(LoopSimplifyID);
         AU.addRequiredID(LCSSAID);
         AU.addPreservedID(LCSSAID);
+#if LLVM_VERSION_MAJOR == 3 &&  LLVM_VERSION_MINOR >= 8
+        AU.addRequired<ScalarEvolutionWrapperPass>();
+        AU.addPreserved<ScalarEvolutionWrapperPass>();
+#else
         AU.addRequired<ScalarEvolution>();
         AU.addPreserved<ScalarEvolution>();
+#endif
       // FIXME: Loop unroll requires LCSSA. And LCSSA requires dom info.
       // If loop unroll does not preserve dom info then LCSSA pass on next
       // loop will receive invalid dom info.
@@ -156,7 +161,12 @@ namespace gbe {
       // be unrolled.
       bool handleParentLoops(Loop *L, LPPassManager &LPM) {
         Loop *currL = L;
+#if LLVM_VERSION_MAJOR == 3 &&  LLVM_VERSION_MINOR >= 8
+        ScalarEvolution *SE = &getAnalysis<ScalarEvolutionWrapperPass>().getSE();
+        LoopInfo &loopInfo = getAnalysis<LoopInfoWrapperPass>().getLoopInfo();
+#else
         ScalarEvolution *SE = &getAnalysis<ScalarEvolution>();
+#endif
         BasicBlock *ExitBlock = currL->getLoopLatch();
         if (!ExitBlock || !L->isLoopExiting(ExitBlock))
           ExitBlock = currL->getExitingBlock();
@@ -183,7 +193,11 @@ namespace gbe {
               shouldUnroll = false;
             setUnrollID(currL, false);
             if (currL != L)
+#if LLVM_VERSION_MAJOR == 3 &&  LLVM_VERSION_MINOR >= 8
+              loopInfo.markAsRemoved(currL);
+#else
               LPM.deleteLoopFromQueue(currL);
+#endif
           }
           currL = parentL;
           currTripCount = parentTripCount;
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