SV_TESS_COORD (reference) in projects: third_party

325    case SV_TESS_COORD:     return 0x2f0 + idx * 4;  in getSVAddress()

510    SV_TESS_COORD,  enumerator

452    case TGSI_SEMANTIC_TESSCOORD:  return nv50_ir::SV_TESS_COORD;  in translateSysVal()

/third_party/mesa3d/src/nouveau/codegen/
D	nv50_ir_target_nvc0.cpp	`325 case SV_TESS_COORD: return 0x2f0 + idx * 4; in getSVAddress()`
D	nv50_ir_build_util.cpp	`474 case SV_TESS_COORD: in mkSysVal()`
D	nv50_ir.h	`510 SV_TESS_COORD, enumerator`
D	nv50_ir_from_nir.cpp	`1624 return SV_TESS_COORD; in convert()`
D	nv50_ir_from_tgsi.cpp	`452 case TGSI_SEMANTIC_TESSCOORD: return nv50_ir::SV_TESS_COORD; in translateSysVal()`
D	nv50_ir_lowering_nvc0.cpp	`3004 case SV_TESS_COORD: in handleRDSV()`