================
@@ -1268,42 +1259,21 @@ bool
WebAssemblyLowerEmscriptenEHSjLj::runSjLjOnFunction(Function &F) {
LLVMContext &C = F.getContext();
IRBuilder<> IRB(C);
SmallVector<Instruction *, 64> ToErase;
- // Vector of %setjmpTable values
- SmallVector<Instruction *, 4> SetjmpTableInsts;
- // Vector of %setjmpTableSize values
- SmallVector<Instruction *, 4> SetjmpTableSizeInsts;
// Setjmp preparation
- // This instruction effectively means %setjmpTableSize = 4.
- // We create this as an instruction intentionally, and we don't want to fold
- // this instruction to a constant 4, because this value will be used in
- // SSAUpdater.AddAvailableValue(...) later.
BasicBlock *Entry = &F.getEntryBlock();
DebugLoc FirstDL = getOrCreateDebugLoc(&*Entry->begin(), F.getSubprogram());
SplitBlock(Entry, &*Entry->getFirstInsertionPt());
- BinaryOperator *SetjmpTableSize =
- BinaryOperator::Create(Instruction::Add, IRB.getInt32(4),
IRB.getInt32(0),
- "setjmpTableSize", Entry->getTerminator());
- SetjmpTableSize->setDebugLoc(FirstDL);
- // setjmpTable = (int *) malloc(40);
- Type *IntPtrTy = getAddrIntType(&M);
- Constant *size = ConstantInt::get(IntPtrTy, 40);
- IRB.SetInsertPoint(SetjmpTableSize);
- auto *SetjmpTable = IRB.CreateMalloc(IntPtrTy, IRB.getInt32Ty(), size,
- nullptr, nullptr, "setjmpTable");
- SetjmpTable->setDebugLoc(FirstDL);
- // CallInst::CreateMalloc may return a bitcast instruction if the result
types
- // mismatch. We need to set the debug loc for the original call too.
- auto *MallocCall = SetjmpTable->stripPointerCasts();
- if (auto *MallocCallI = dyn_cast<Instruction>(MallocCall)) {
- MallocCallI->setDebugLoc(FirstDL);
- }
- // setjmpTable[0] = 0;
- IRB.CreateStore(IRB.getInt32(0), SetjmpTable);
- SetjmpTableInsts.push_back(SetjmpTable);
- SetjmpTableSizeInsts.push_back(SetjmpTableSize);
+ Instruction *FunctionInvocationId;
+ IRB.SetInsertPoint(Entry->getTerminator());
+ // This alloca'ed pointer is used by the runtime to identify function
+ // inovactions. It's just for pointer comparisons. It will never
+ // be dereferenced.
----------------
aheejin wrote:
```suggestion
// invocations. It's just for pointer comparisons. It will never be
// dereferenced.
```
https://github.com/llvm/llvm-project/pull/84137
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