X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FCodeGen%2FShadowStackGC.cpp;h=0e6d4796e22ccfab8c454e581a8f5228a1be554f;hb=23eaf26fa3510526b11230c76ea39221277dd2ea;hp=08d6720701a0b15177f1938ba26e77bcac157f93;hpb=baf3c404409d5e47b13984a7f95bfbd6d1f2e79e;p=oota-llvm.git diff --git a/lib/CodeGen/ShadowStackGC.cpp b/lib/CodeGen/ShadowStackGC.cpp index 08d6720701a..0e6d4796e22 100644 --- a/lib/CodeGen/ShadowStackGC.cpp +++ b/lib/CodeGen/ShadowStackGC.cpp @@ -31,14 +31,13 @@ #include "llvm/CodeGen/GCStrategy.h" #include "llvm/IntrinsicInst.h" #include "llvm/Module.h" -#include "llvm/Support/Compiler.h" #include "llvm/Support/IRBuilder.h" using namespace llvm; namespace { - class VISIBILITY_HIDDEN ShadowStackGC : public GCStrategy { + class ShadowStackGC : public GCStrategy { /// RootChain - This is the global linked-list that contains the chain of GC /// roots. GlobalVariable *Head; @@ -84,7 +83,7 @@ namespace { /// /// It's wrapped up in a state machine using the same transform C# uses for /// 'yield return' enumerators, This transform allows it to be non-allocating. - class VISIBILITY_HIDDEN EscapeEnumerator { + class EscapeEnumerator { Function &F; const char *CleanupBBName; @@ -138,8 +137,9 @@ namespace { return 0; // Create a cleanup block. - BasicBlock *CleanupBB = BasicBlock::Create(CleanupBBName, &F); - UnwindInst *UI = new UnwindInst(CleanupBB); + BasicBlock *CleanupBB = BasicBlock::Create(F.getContext(), + CleanupBBName, &F); + UnwindInst *UI = new UnwindInst(F.getContext(), CleanupBB); // Transform the 'call' instructions into 'invoke's branching to the // cleanup block. Go in reverse order to make prettier BB names. @@ -188,9 +188,7 @@ ShadowStackGC::ShadowStackGC() : Head(0), StackEntryTy(0) { Constant *ShadowStackGC::GetFrameMap(Function &F) { // doInitialization creates the abstract type of this value. - LLVMContext &Context = F.getContext(); - - Type *VoidPtr = PointerType::getUnqual(Type::Int8Ty); + const Type *VoidPtr = Type::getInt8PtrTy(F.getContext()); // Truncate the ShadowStackDescriptor if some metadata is null. unsigned NumMeta = 0; @@ -203,17 +201,18 @@ Constant *ShadowStackGC::GetFrameMap(Function &F) { } Constant *BaseElts[] = { - ConstantInt::get(Type::Int32Ty, Roots.size(), false), - ConstantInt::get(Type::Int32Ty, NumMeta, false), + ConstantInt::get(Type::getInt32Ty(F.getContext()), Roots.size(), false), + ConstantInt::get(Type::getInt32Ty(F.getContext()), NumMeta, false), }; Constant *DescriptorElts[] = { - ConstantStruct::get(BaseElts, 2), - ConstantArray::get(Context.getArrayType(VoidPtr, NumMeta), + ConstantStruct::get(F.getContext(), BaseElts, 2, false), + ConstantArray::get(ArrayType::get(VoidPtr, NumMeta), Metadata.begin(), NumMeta) }; - Constant *FrameMap = ConstantStruct::get(DescriptorElts, 2); + Constant *FrameMap = ConstantStruct::get(F.getContext(), DescriptorElts, 2, + false); std::string TypeName("gc_map."); TypeName += utostr(NumMeta); @@ -236,8 +235,10 @@ Constant *ShadowStackGC::GetFrameMap(Function &F) { GlobalVariable::InternalLinkage, FrameMap, "__gc_" + F.getName()); - Constant *GEPIndices[2] = { ConstantInt::get(Type::Int32Ty, 0), - ConstantInt::get(Type::Int32Ty, 0) }; + Constant *GEPIndices[2] = { + ConstantInt::get(Type::getInt32Ty(F.getContext()), 0), + ConstantInt::get(Type::getInt32Ty(F.getContext()), 0) + }; return ConstantExpr::getGetElementPtr(GV, GEPIndices, 2); } @@ -247,7 +248,7 @@ const Type* ShadowStackGC::GetConcreteStackEntryType(Function &F) { EltTys.push_back(StackEntryTy); for (size_t I = 0; I != Roots.size(); I++) EltTys.push_back(Roots[I].second->getAllocatedType()); - Type *Ty = StructType::get(EltTys); + Type *Ty = StructType::get(F.getContext(), EltTys); std::string TypeName("gc_stackentry."); TypeName += F.getName(); @@ -265,9 +266,11 @@ bool ShadowStackGC::initializeCustomLowering(Module &M) { // void *Meta[]; // May be absent for roots without metadata. // }; std::vector EltTys; - EltTys.push_back(Type::Int32Ty); // 32 bits is ok up to a 32GB stack frame. :) - EltTys.push_back(Type::Int32Ty); // Specifies length of variable length array. - StructType *FrameMapTy = StructType::get(EltTys); + // 32 bits is ok up to a 32GB stack frame. :) + EltTys.push_back(Type::getInt32Ty(M.getContext())); + // Specifies length of variable length array. + EltTys.push_back(Type::getInt32Ty(M.getContext())); + StructType *FrameMapTy = StructType::get(M.getContext(), EltTys); M.addTypeName("gc_map", FrameMapTy); PointerType *FrameMapPtrTy = PointerType::getUnqual(FrameMapTy); @@ -276,12 +279,12 @@ bool ShadowStackGC::initializeCustomLowering(Module &M) { // FrameMap *Map; // Pointer to constant FrameMap. // void *Roots[]; // Stack roots (in-place array, so we pretend). // }; - OpaqueType *RecursiveTy = OpaqueType::get(); + OpaqueType *RecursiveTy = OpaqueType::get(M.getContext()); EltTys.clear(); EltTys.push_back(PointerType::getUnqual(RecursiveTy)); EltTys.push_back(FrameMapPtrTy); - PATypeHolder LinkTyH = StructType::get(EltTys); + PATypeHolder LinkTyH = StructType::get(M.getContext(), EltTys); RecursiveTy->refineAbstractTypeTo(LinkTyH.get()); StackEntryTy = cast(LinkTyH.get()); @@ -296,10 +299,10 @@ bool ShadowStackGC::initializeCustomLowering(Module &M) { // linkage! Head = new GlobalVariable(M, StackEntryPtrTy, false, GlobalValue::LinkOnceAnyLinkage, - M.getContext().getNullValue(StackEntryPtrTy), + Constant::getNullValue(StackEntryPtrTy), "llvm_gc_root_chain"); } else if (Head->hasExternalLinkage() && Head->isDeclaration()) { - Head->setInitializer(M.getContext().getNullValue(StackEntryPtrTy)); + Head->setInitializer(Constant::getNullValue(StackEntryPtrTy)); Head->setLinkage(GlobalValue::LinkOnceAnyLinkage); } @@ -342,9 +345,9 @@ void ShadowStackGC::CollectRoots(Function &F) { GetElementPtrInst * ShadowStackGC::CreateGEP(LLVMContext &Context, IRBuilder<> &B, Value *BasePtr, int Idx, int Idx2, const char *Name) { - Value *Indices[] = { ConstantInt::get(Type::Int32Ty, 0), - ConstantInt::get(Type::Int32Ty, Idx), - ConstantInt::get(Type::Int32Ty, Idx2) }; + Value *Indices[] = { ConstantInt::get(Type::getInt32Ty(Context), 0), + ConstantInt::get(Type::getInt32Ty(Context), Idx), + ConstantInt::get(Type::getInt32Ty(Context), Idx2) }; Value* Val = B.CreateGEP(BasePtr, Indices, Indices + 3, Name); assert(isa(Val) && "Unexpected folded constant"); @@ -355,8 +358,8 @@ ShadowStackGC::CreateGEP(LLVMContext &Context, IRBuilder<> &B, Value *BasePtr, GetElementPtrInst * ShadowStackGC::CreateGEP(LLVMContext &Context, IRBuilder<> &B, Value *BasePtr, int Idx, const char *Name) { - Value *Indices[] = { ConstantInt::get(Type::Int32Ty, 0), - ConstantInt::get(Type::Int32Ty, Idx) }; + Value *Indices[] = { ConstantInt::get(Type::getInt32Ty(Context), 0), + ConstantInt::get(Type::getInt32Ty(Context), Idx) }; Value *Val = B.CreateGEP(BasePtr, Indices, Indices + 2, Name); assert(isa(Val) && "Unexpected folded constant");