#include "llvm/Transforms/Utils/Local.h"
#include "llvm/ADT/Statistic.h"
#include "llvm/Support/CommandLine.h"
-#include "llvm/Support/Compiler.h"
#include "llvm/Target/TargetLowering.h"
#include <csetjmp>
#include <set>
cl::desc("Make the -lowerinvoke pass insert expensive, but correct, EH code"));
namespace {
- class VISIBILITY_HIDDEN LowerInvoke : public FunctionPass {
+ class LowerInvoke : public FunctionPass {
// Used for both models.
Constant *WriteFn;
Constant *AbortFn;
// This is a cluster of orthogonal Transforms
AU.addPreservedID(PromoteMemoryToRegisterID);
AU.addPreservedID(LowerSwitchID);
- AU.addPreservedID(LowerAllocationsID);
}
private:
// doInitialization - Make sure that there is a prototype for abort in the
// current module.
bool LowerInvoke::doInitialization(Module &M) {
- LLVMContext &Context = M.getContext();
-
- const Type *VoidPtrTy = Context.getPointerTypeUnqual(Type::Int8Ty);
+ const Type *VoidPtrTy =
+ Type::getInt8PtrTy(M.getContext());
AbortMessage = 0;
if (ExpensiveEHSupport) {
// Insert a type for the linked list of jump buffers.
unsigned JBSize = TLI ? TLI->getJumpBufSize() : 0;
JBSize = JBSize ? JBSize : 200;
- const Type *JmpBufTy = Context.getArrayType(VoidPtrTy, JBSize);
+ const Type *JmpBufTy = ArrayType::get(VoidPtrTy, JBSize);
{ // The type is recursive, so use a type holder.
std::vector<const Type*> Elements;
Elements.push_back(JmpBufTy);
- OpaqueType *OT = Context.getOpaqueType();
- Elements.push_back(Context.getPointerTypeUnqual(OT));
- PATypeHolder JBLType(Context.getStructType(Elements));
+ OpaqueType *OT = OpaqueType::get(M.getContext());
+ Elements.push_back(PointerType::getUnqual(OT));
+ PATypeHolder JBLType(StructType::get(M.getContext(), Elements));
OT->refineAbstractTypeTo(JBLType.get()); // Complete the cycle.
JBLinkTy = JBLType.get();
M.addTypeName("llvm.sjljeh.jmpbufty", JBLinkTy);
}
- const Type *PtrJBList = Context.getPointerTypeUnqual(JBLinkTy);
+ const Type *PtrJBList = PointerType::getUnqual(JBLinkTy);
// Now that we've done that, insert the jmpbuf list head global, unless it
// already exists.
if (!(JBListHead = M.getGlobalVariable("llvm.sjljeh.jblist", PtrJBList))) {
JBListHead = new GlobalVariable(M, PtrJBList, false,
GlobalValue::LinkOnceAnyLinkage,
- Context.getNullValue(PtrJBList),
+ Constant::getNullValue(PtrJBList),
"llvm.sjljeh.jblist");
}
}
// We need the 'write' and 'abort' functions for both models.
- AbortFn = M.getOrInsertFunction("abort", Type::VoidTy, (Type *)0);
+ AbortFn = M.getOrInsertFunction("abort", Type::getVoidTy(M.getContext()),
+ (Type *)0);
#if 0 // "write" is Unix-specific.. code is going away soon anyway.
WriteFn = M.getOrInsertFunction("write", Type::VoidTy, Type::Int32Ty,
VoidPtrTy, Type::Int32Ty, (Type *)0);
}
void LowerInvoke::createAbortMessage(Module *M) {
- LLVMContext &Context = M->getContext();
-
if (ExpensiveEHSupport) {
// The abort message for expensive EH support tells the user that the
// program 'unwound' without an 'invoke' instruction.
Constant *Msg =
- Context.getConstantArray("ERROR: Exception thrown, but not caught!\n");
+ ConstantArray::get(M->getContext(),
+ "ERROR: Exception thrown, but not caught!\n");
AbortMessageLength = Msg->getNumOperands()-1; // don't include \0
GlobalVariable *MsgGV = new GlobalVariable(*M, Msg->getType(), true,
GlobalValue::InternalLinkage,
Msg, "abortmsg");
- std::vector<Constant*> GEPIdx(2, Context.getNullValue(Type::Int32Ty));
- AbortMessage = Context.getConstantExprGetElementPtr(MsgGV, &GEPIdx[0], 2);
+ std::vector<Constant*> GEPIdx(2,
+ Constant::getNullValue(Type::getInt32Ty(M->getContext())));
+ AbortMessage = ConstantExpr::getGetElementPtr(MsgGV, &GEPIdx[0], 2);
} else {
// The abort message for cheap EH support tells the user that EH is not
// enabled.
Constant *Msg =
- Context.getConstantArray("Exception handler needed, but not enabled."
+ ConstantArray::get(M->getContext(),
+ "Exception handler needed, but not enabled."
"Recompile program with -enable-correct-eh-support.\n");
AbortMessageLength = Msg->getNumOperands()-1; // don't include \0
GlobalVariable *MsgGV = new GlobalVariable(*M, Msg->getType(), true,
GlobalValue::InternalLinkage,
Msg, "abortmsg");
- std::vector<Constant*> GEPIdx(2, Context.getNullValue(Type::Int32Ty));
+ std::vector<Constant*> GEPIdx(2, Constant::getNullValue(
+ Type::getInt32Ty(M->getContext())));
AbortMessage = ConstantExpr::getGetElementPtr(MsgGV, &GEPIdx[0], 2);
}
}
}
bool LowerInvoke::insertCheapEHSupport(Function &F) {
- LLVMContext &Context = F.getContext();
bool Changed = false;
for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
if (InvokeInst *II = dyn_cast<InvokeInst>(BB->getTerminator())) {
// Insert a return instruction. This really should be a "barrier", as it
// is unreachable.
- ReturnInst::Create(F.getReturnType() == Type::VoidTy ? 0 :
- Context.getNullValue(F.getReturnType()), UI);
+ ReturnInst::Create(F.getContext(),
+ F.getReturnType() == Type::getVoidTy(F.getContext()) ?
+ 0 : Constant::getNullValue(F.getReturnType()), UI);
// Remove the unwind instruction now.
BB->getInstList().erase(UI);
void LowerInvoke::rewriteExpensiveInvoke(InvokeInst *II, unsigned InvokeNo,
AllocaInst *InvokeNum,
SwitchInst *CatchSwitch) {
- LLVMContext &Context = II->getContext();
- ConstantInt *InvokeNoC = ConstantInt::get(Type::Int32Ty, InvokeNo);
+ ConstantInt *InvokeNoC = ConstantInt::get(Type::getInt32Ty(II->getContext()),
+ InvokeNo);
// If the unwind edge has phi nodes, split the edge.
if (isa<PHINode>(II->getUnwindDest()->begin())) {
BasicBlock::iterator NI = II->getNormalDest()->getFirstNonPHI();
// nonvolatile.
- new StoreInst(Context.getNullValue(Type::Int32Ty), InvokeNum, false, NI);
+ new StoreInst(Constant::getNullValue(Type::getInt32Ty(II->getContext())),
+ InvokeNum, false, NI);
// Add a switch case to our unwind block.
CatchSwitch->addCase(InvokeNoC, II->getUnwindDest());
std::vector<UnwindInst*> Unwinds;
std::vector<InvokeInst*> Invokes;
- LLVMContext &Context = F.getContext();
-
for (Function::iterator BB = F.begin(), E = F.end(); BB != E; ++BB)
if (ReturnInst *RI = dyn_cast<ReturnInst>(BB->getTerminator())) {
// Remember all return instructions in case we insert an invoke into this
"jblink", F.begin()->begin());
std::vector<Value*> Idx;
- Idx.push_back(Context.getNullValue(Type::Int32Ty));
- Idx.push_back(ConstantInt::get(Type::Int32Ty, 1));
+ Idx.push_back(Constant::getNullValue(Type::getInt32Ty(F.getContext())));
+ Idx.push_back(ConstantInt::get(Type::getInt32Ty(F.getContext()), 1));
OldJmpBufPtr = GetElementPtrInst::Create(JmpBuf, Idx.begin(), Idx.end(),
"OldBuf",
EntryBB->getTerminator());
// Create the catch block. The catch block is basically a big switch
// statement that goes to all of the invoke catch blocks.
- BasicBlock *CatchBB = BasicBlock::Create("setjmp.catch", &F);
+ BasicBlock *CatchBB =
+ BasicBlock::Create(F.getContext(), "setjmp.catch", &F);
// Create an alloca which keeps track of which invoke is currently
// executing. For normal calls it contains zero.
- AllocaInst *InvokeNum = new AllocaInst(Type::Int32Ty, 0,
+ AllocaInst *InvokeNum = new AllocaInst(Type::getInt32Ty(F.getContext()), 0,
"invokenum",EntryBB->begin());
- new StoreInst(ConstantInt::get(Type::Int32Ty, 0), InvokeNum, true,
- EntryBB->getTerminator());
+ new StoreInst(ConstantInt::get(Type::getInt32Ty(F.getContext()), 0),
+ InvokeNum, true, EntryBB->getTerminator());
// Insert a load in the Catch block, and a switch on its value. By default,
// we go to a block that just does an unwind (which is the correct action
// for a standard call).
- BasicBlock *UnwindBB = BasicBlock::Create("unwindbb", &F);
- Unwinds.push_back(new UnwindInst(UnwindBB));
+ BasicBlock *UnwindBB = BasicBlock::Create(F.getContext(), "unwindbb", &F);
+ Unwinds.push_back(new UnwindInst(F.getContext(), UnwindBB));
Value *CatchLoad = new LoadInst(InvokeNum, "invoke.num", true, CatchBB);
SwitchInst *CatchSwitch =
BasicBlock *ContBlock = EntryBB->splitBasicBlock(EntryBB->getTerminator(),
"setjmp.cont");
- Idx[1] = ConstantInt::get(Type::Int32Ty, 0);
+ Idx[1] = ConstantInt::get(Type::getInt32Ty(F.getContext()), 0);
Value *JmpBufPtr = GetElementPtrInst::Create(JmpBuf, Idx.begin(), Idx.end(),
"TheJmpBuf",
EntryBB->getTerminator());
- JmpBufPtr = new BitCastInst(JmpBufPtr, PointerType::getUnqual(Type::Int8Ty),
+ JmpBufPtr = new BitCastInst(JmpBufPtr,
+ Type::getInt8PtrTy(F.getContext()),
"tmp", EntryBB->getTerminator());
Value *SJRet = CallInst::Create(SetJmpFn, JmpBufPtr, "sjret",
EntryBB->getTerminator());
// Compare the return value to zero.
Value *IsNormal = new ICmpInst(EntryBB->getTerminator(),
ICmpInst::ICMP_EQ, SJRet,
- Context.getNullValue(SJRet->getType()),
+ Constant::getNullValue(SJRet->getType()),
"notunwind");
// Nuke the uncond branch.
EntryBB->getTerminator()->eraseFromParent();
// Create three new blocks, the block to load the jmpbuf ptr and compare
// against null, the block to do the longjmp, and the error block for if it
// is null. Add them at the end of the function because they are not hot.
- BasicBlock *UnwindHandler = BasicBlock::Create("dounwind", &F);
- BasicBlock *UnwindBlock = BasicBlock::Create("unwind", &F);
- BasicBlock *TermBlock = BasicBlock::Create("unwinderror", &F);
+ BasicBlock *UnwindHandler = BasicBlock::Create(F.getContext(),
+ "dounwind", &F);
+ BasicBlock *UnwindBlock = BasicBlock::Create(F.getContext(), "unwind", &F);
+ BasicBlock *TermBlock = BasicBlock::Create(F.getContext(), "unwinderror", &F);
// If this function contains an invoke, restore the old jumpbuf ptr.
Value *BufPtr;
// Load the JBList, if it's null, then there was no catch!
Value *NotNull = new ICmpInst(*UnwindHandler, ICmpInst::ICMP_NE, BufPtr,
- Context.getNullValue(BufPtr->getType()),
+ Constant::getNullValue(BufPtr->getType()),
"notnull");
BranchInst::Create(UnwindBlock, TermBlock, NotNull, UnwindHandler);
// Create the block to do the longjmp.
// Get a pointer to the jmpbuf and longjmp.
std::vector<Value*> Idx;
- Idx.push_back(Context.getNullValue(Type::Int32Ty));
- Idx.push_back(ConstantInt::get(Type::Int32Ty, 0));
+ Idx.push_back(Constant::getNullValue(Type::getInt32Ty(F.getContext())));
+ Idx.push_back(ConstantInt::get(Type::getInt32Ty(F.getContext()), 0));
Idx[0] = GetElementPtrInst::Create(BufPtr, Idx.begin(), Idx.end(), "JmpBuf",
UnwindBlock);
- Idx[0] = new BitCastInst(Idx[0], PointerType::getUnqual(Type::Int8Ty),
+ Idx[0] = new BitCastInst(Idx[0],
+ Type::getInt8PtrTy(F.getContext()),
"tmp", UnwindBlock);
- Idx[1] = ConstantInt::get(Type::Int32Ty, 1);
+ Idx[1] = ConstantInt::get(Type::getInt32Ty(F.getContext()), 1);
CallInst::Create(LongJmpFn, Idx.begin(), Idx.end(), "", UnwindBlock);
- new UnreachableInst(UnwindBlock);
+ new UnreachableInst(F.getContext(), UnwindBlock);
// Set up the term block ("throw without a catch").
- new UnreachableInst(TermBlock);
+ new UnreachableInst(F.getContext(), TermBlock);
// Insert a new call to write(2, AbortMessage, AbortMessageLength);
writeAbortMessage(TermBlock->getTerminator());