Alex Zinenko 2628641b23 GPUtoNVVM: adjust integer bitwidth when lowering special register ops ... GPU dialect operations (launch and launch_func) use `index` type for thread and block index values inside the kernel, for compatibility with affine loops. NVVM dialect operations, following the NVVM intrinsics, use `!llvm.i32` type, which does not necessarily have the same bit width as the lowered `index` type. Optionally sign-extend (indices are signed) or truncate the result of the NVVM dialect operation to the bit width of the lowered `index` type before passing it to other operations. This behavior is consistent with `std.index_cast`. We cannot use the latter since we are targeting LLVM dialect types directly, rather than standard integer types. PiperOrigin-RevId: 254980868		2019-06-25 09:21:26 -07:00
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AffineToGPU	Convert a nest affine loops to a GPU kernel	2019-06-19 23:02:02 -07:00
GPUToNVVM	GPUtoNVVM: adjust integer bitwidth when lowering special register ops	2019-06-25 09:21:26 -07:00