Method FunctionCompiler

lib/llvm/compiler.cpp:544–581

public:
  FunctionCompiler(LLVM::Compiler::CompileContext &Context,
                   LLVM::FunctionCallee F, Span<const ValType> Locals,
                   bool Interruptible, bool InstructionCounting,
                   bool GasMeasuring) noexcept
      : Context(Context), LLContext(Context.LLContext),
        Interruptible(Interruptible), F(F), Builder(LLContext) {
    if (F.Fn) {
      Builder.positionAtEnd(LLVM::BasicBlock::create(LLContext, F.Fn, "entry"));
      ExecCtx = Builder.createLoad(Context.ExecCtxTy, F.Fn.getFirstParam());

      if (InstructionCounting) {
        LocalInstrCount = Builder.createAlloca(Context.Int64Ty);
        Builder.createStore(LLContext.getInt64(0), LocalInstrCount);
      }

      if (GasMeasuring) {
        LocalGas = Builder.createAlloca(Context.Int64Ty);
        Builder.createStore(LLContext.getInt64(0), LocalGas);
      }

      for (LLVM::Value Arg = F.Fn.getFirstParam().getNextParam(); Arg;
           Arg = Arg.getNextParam()) {
        LLVM::Type Ty = Arg.getType();
        LLVM::Value ArgPtr = Builder.createAlloca(Ty);
        Builder.createStore(Arg, ArgPtr);
        Local.emplace_back(Ty, ArgPtr);
      }

      for (const auto &Type : Locals) {
        LLVM::Type Ty = toLLVMType(LLContext, Type);
        LLVM::Value ArgPtr = Builder.createAlloca(Ty);
        Builder.createStore(
            toLLVMConstantZero(LLContext, Type, Context.CompositeTypes),
            ArgPtr);
        Local.emplace_back(Ty, ArgPtr);
      }
    }
  }

  LLVM::BasicBlock getTrapBB(ErrCode::Value Error) noexcept {
    if (auto Iter = TrapBB.find(Error); Iter != TrapBB.end()) {