[HLSL] SPIRV_Cross_VertexInfo is not relieble

[Try]

Face issue with my pet-game-engine:

1. spirv-cross emits code, like:

cbuffer SPIRV_Cross_VertexInfo
{
   int SPIRV_Cross_BaseVertex;
   int SPIRV_Cross_BaseInstance; 
};     

2. Since no particular binding register is specified, it gonna be assigned automatically by DXIL.
   Normally it's lowest positive value that is unused by other cbuffers
3. Register that assigned automatically may overlap with some else cbuffer in fragment shader, causing link/runtime issues.

Problem is somewhat outside of spirv-cross scope, and apparently there is no perfect solution to it. My current idea is to add new parameter CompilerHLSL::Options::vertexInfoRegister, that can be provided by game engine to specify exact register.
(Note: engine also can't provide sensible value, but can specify "magic" value like 255 or something)
What do you think about such solution? Thanks!

UPD:
Need to double check, but push-constant possible can have same issue