This PR does
1. Add some C++ tests for `PTXFormat`
2. Enhance the functionality of `PTXFormat`, make a `PTXInstr` instance
can be called multiple times similar as a C function.
This PR does following things:
Enhance the PTXFormat by
Introducing PTXBuilder to enable multiple instructions in a single asm program
override PTXInstr's operator() method to enable instr(opr0, opr1) style of setting operands for an instruction
Refactor the PTX code used in LoadOpConversion with PTXFormat
Authored-by: goostavz <gzhu@nvidia.com>
Add backend support of arith::AddIOp, arith::AddFOp, GetProgramIdOp, GEPOp and bugfix for SplatOp, StoreOp, FuncOp
Co-authored-by: gzhu <gzhu@nvidia.com>
