Function spvOperandCanBeForwardDeclaredFunction

source/operand.cpp:509–598

}

std::function<bool(unsigned)> spvOperandCanBeForwardDeclaredFunction(
    spv::Op opcode) {
  std::function<bool(unsigned index)> out;
  if (spvOpcodeGeneratesType(opcode)) {
    // All types can use forward pointers.
    out = [](unsigned) { return true; };
    return out;
  }
  switch (opcode) {
    case spv::Op::OpExecutionMode:
    case spv::Op::OpExecutionModeId:
    case spv::Op::OpEntryPoint:
    case spv::Op::OpName:
    case spv::Op::OpMemberName:
    case spv::Op::OpSelectionMerge:
    case spv::Op::OpDecorate:
    case spv::Op::OpMemberDecorate:
    case spv::Op::OpMemberDecorateIdEXT:
    case spv::Op::OpDecorateId:
    case spv::Op::OpDecorateStringGOOGLE:
    case spv::Op::OpMemberDecorateStringGOOGLE:
    case spv::Op::OpBranch:
    case spv::Op::OpLoopMerge:
    case spv::Op::OpConditionalEntryPointINTEL:
    case spv::Op::OpConditionalCapabilityINTEL:
    case spv::Op::OpConditionalExtensionINTEL:
      out = [](unsigned) { return true; };
      break;
    case spv::Op::OpGroupDecorate:
    case spv::Op::OpGroupMemberDecorate:
    case spv::Op::OpBranchConditional:
    case spv::Op::OpSwitch:
      out = [](unsigned index) { return index != 0; };
      break;

    case spv::Op::OpFunctionCall:
      // The Function parameter.
      out = [](unsigned index) { return index == 2; };
      break;

    case spv::Op::OpConstantFunctionPointerINTEL:
      // The Function parameter.
      out = [](unsigned index) { return index == 2; };
      break;

    case spv::Op::OpPhi:
      out = [](unsigned index) { return index > 1; };
      break;

    case spv::Op::OpEnqueueKernel:
      // The Invoke parameter.
      out = [](unsigned index) { return index == 8; };
      break;

    case spv::Op::OpGetKernelNDrangeSubGroupCount:
    case spv::Op::OpGetKernelNDrangeMaxSubGroupSize:
      // The Invoke parameter.
      out = [](unsigned index) { return index == 3; };