File: openmp-nested.mlir

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// RUN: mlir-translate -mlir-to-llvmir -split-input-file %s | FileCheck %s

module {
  llvm.func @printf(!llvm.ptr, ...) -> i32
  llvm.mlir.global internal constant @str0("WG size of kernel = %d X %d\0A\00")

  llvm.func @main(%arg0: i32, %arg1: !llvm.ptr) -> i32 {
    omp.parallel   {
      %0 = llvm.mlir.constant(1 : index) : i64
      %1 = llvm.mlir.constant(10 : index) : i64
      %2 = llvm.mlir.constant(0 : index) : i64
      %4 = llvm.mlir.constant(0 : i32) : i32
      %12 = llvm.alloca %0 x i64 : (i64) -> !llvm.ptr
      omp.wsloop {
        omp.loop_nest (%arg2) : i64 = (%2) to (%1) step (%0) {
          omp.parallel {
            omp.wsloop {
              omp.loop_nest (%arg3) : i64 = (%2) to (%0) step (%0) {
                llvm.store %2, %12 : i64, !llvm.ptr
                omp.yield
              }
              omp.terminator
            }
            omp.terminator
          }
          %19 = llvm.load %12 : !llvm.ptr -> i64
          %20 = llvm.trunc %19 : i64 to i32
          %5 = llvm.mlir.addressof @str0 : !llvm.ptr
          %6 = llvm.getelementptr %5[%4, %4] : (!llvm.ptr, i32, i32) -> !llvm.ptr, !llvm.array<29 x i8>
          %21 = llvm.call @printf(%6, %20, %20) vararg(!llvm.func<i32 (ptr, ...)>): (!llvm.ptr, i32, i32) -> i32
          omp.yield
        }
        omp.terminator
      }
      omp.terminator
    }
    %a4 = llvm.mlir.constant(0 : i32) : i32
    llvm.return %a4 : i32
  }

}

// CHECK: call void (ptr, i32, ptr, ...) @__kmpc_fork_call(ptr @1, i32 0, ptr @[[inner1:.+]])

// CHECK: define internal void @[[inner1]]
// CHECK: %[[structArg:.+]] = alloca { ptr }
// CHECK: call void (ptr, i32, ptr, ...) @__kmpc_fork_call(ptr @1, i32 1, ptr @[[inner2:.+]], ptr %[[structArg]])