llvm-project

a1bc979a - [mlir][Bufferization] Do not have read semantics for destination of `tensor.parallel_insert_slice`. (#134169)

[mlir][Bufferization] Do not have read semantics for destination of `tensor.parallel_insert_slice`. (#134169) `tensor.insert_slice` needs to have read semantics on its destination operand. Since it has a return value, its semantics are - Copy dest to result - Copy source to subview of destination. `tensor.parallel_insert_slice` though has no result. So it does not need to have read semantics. The op description [here](https://github.com/llvm/llvm-project/blob/a3ac318e5f8668ec5b79dd86639881dfb2e88b69/mlir/include/mlir/Dialect/Tensor/IR/TensorOps.td#L1524) also says that it is expected to lower to a `memref.subview`, that does not have read semantics on the destination (its just a view). This patch drops the read semantics for destination of `tensor.parallel_insert_slice` but also makes the `shared_outs` operands of `scf.forall` have read semantics. Earlier it would rely indirectly on read semantics of destination operand of `tensor.parallel_insert_slice` to propagate the read semantics for `shared_outs`. Now that is specified more directly. Fixes #133964 --------- Signed-off-by: MaheshRavishankar <mahesh.ravishankar@gmail.com>