[MLIR][NVVM] Derive NVVM_SyncWarpOp from NVVM_IntrOp for import support (#188415)
Change `NVVM_SyncWarpOp` base class from `NVVM_Op` to
`NVVM_IntrOp<"bar.warp.sync">`, which auto-generates `llvmEnumName =
nvvm_bar_warp_sync` and registers it with
`-gen-intr-from-llvmir-conversions` and
`-gen-convertible-llvmir-intrinsics`. This enables LLVM IR to MLIR
import. The hand-written `llvmBuilder` is removed as the default
`LLVM_IntrOpBase` builder is equivalent.
llvm
1474e3e4 - [MLIR][NVVM] Derive NVVM_SyncWarpOp from NVVM_IntrOp for import support (#188415)
