[llvm] [mlir] [Offload] Add oneInterationPerThread param to loop device RTL (PR #151959)

[Sergio Afonso via llvm-commits]

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@@ -470,18 +470,18 @@ __OMP_RTL(__kmpc_target_deinit, false, Void,)
 __OMP_RTL(__kmpc_kernel_prepare_parallel, false, Void, VoidPtr)
 __OMP_RTL(__kmpc_parallel_51, false, Void, IdentPtr, Int32, Int32, Int32, Int32,
           VoidPtr, VoidPtr, VoidPtrPtr, SizeTy)
-__OMP_RTL(__kmpc_for_static_loop_4, false, Void, IdentPtr, VoidPtr, VoidPtr, Int32, Int32, Int32)
-__OMP_RTL(__kmpc_for_static_loop_4u, false, Void, IdentPtr, VoidPtr, VoidPtr, Int32, Int32, Int32)
-__OMP_RTL(__kmpc_for_static_loop_8, false, Void, IdentPtr, VoidPtr, VoidPtr, Int64, Int64, Int64)
-__OMP_RTL(__kmpc_for_static_loop_8u, false, Void, IdentPtr, VoidPtr, VoidPtr, Int64, Int64, Int64)
-__OMP_RTL(__kmpc_distribute_static_loop_4, false, Void, IdentPtr, VoidPtr, VoidPtr, Int32, Int32)
-__OMP_RTL(__kmpc_distribute_static_loop_4u, false, Void, IdentPtr, VoidPtr, VoidPtr, Int32, Int32)
-__OMP_RTL(__kmpc_distribute_static_loop_8, false, Void, IdentPtr, VoidPtr, VoidPtr, Int64, Int64)
-__OMP_RTL(__kmpc_distribute_static_loop_8u, false, Void, IdentPtr, VoidPtr, VoidPtr, Int64, Int64)
-__OMP_RTL(__kmpc_distribute_for_static_loop_4, false, Void, IdentPtr, VoidPtr, VoidPtr, Int32, Int32, Int32, Int32)
-__OMP_RTL(__kmpc_distribute_for_static_loop_4u, false, Void, IdentPtr, VoidPtr, VoidPtr, Int32, Int32, Int32, Int32)
-__OMP_RTL(__kmpc_distribute_for_static_loop_8, false, Void, IdentPtr, VoidPtr, VoidPtr, Int64, Int64, Int64, Int64)
-__OMP_RTL(__kmpc_distribute_for_static_loop_8u, false, Void, IdentPtr, VoidPtr, VoidPtr, Int64, Int64, Int64, Int64)
+__OMP_RTL(__kmpc_for_static_loop_4, false, Void, IdentPtr, VoidPtr, VoidPtr, Int32, Int32, Int32, Int32)
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skatrak wrote:

The new parameter is intended to hold a true-false flag, so why do you make its type match the `num_threads`, `chunk`, etc. arguments? I'd suggest making it an `Int8` "Flags" bit field that for now we only use for this purpose but has some space to grow if needed.

https://github.com/llvm/llvm-project/pull/151959