// RUN: mlir-opt -allow-unregistered-dialect %s -pass-pipeline='builtin.module(func.func(test-scf-parallel-loop-collapsing{collapsed-indices-0=0,1}, canonicalize))' | FileCheck %s func.func @collapse_to_single() { %c0 = arith.constant 3 : index %c1 = arith.constant 7 : index %c2 = arith.constant 11 : index %c3 = arith.constant 29 : index %c4 = arith.constant 3 : index %c5 = arith.constant 4 : index scf.parallel (%i0, %i1) = (%c0, %c1) to (%c2, %c3) step (%c4, %c5) { %result = "magic.op"(%i0, %i1): (index, index) -> index } return } // CHECK-LABEL: func @collapse_to_single() { // CHECK-DAG: [[C18:%.*]] = arith.constant 18 : index // CHECK-DAG: [[C6:%.*]] = arith.constant 6 : index // CHECK-DAG: [[C3:%.*]] = arith.constant 3 : index // CHECK-DAG: [[C7:%.*]] = arith.constant 7 : index // CHECK-DAG: [[C4:%.*]] = arith.constant 4 : index // CHECK-DAG: [[C1:%.*]] = arith.constant 1 : index // CHECK-DAG: [[C0:%.*]] = arith.constant 0 : index // CHECK: scf.parallel ([[NEW_I:%.*]]) = ([[C0]]) to ([[C18]]) step ([[C1]]) { // CHECK: [[I0_COUNT:%.*]] = arith.remsi [[NEW_I]], [[C6]] : index // CHECK: [[I1_COUNT:%.*]] = arith.divsi [[NEW_I]], [[C6]] : index // CHECK: [[V0:%.*]] = arith.muli [[I0_COUNT]], [[C4]] : index // CHECK: [[I1:%.*]] = arith.addi [[V0]], [[C7]] : index // CHECK: [[V1:%.*]] = arith.muli [[I1_COUNT]], [[C3]] : index // CHECK: [[I0:%.*]] = arith.addi [[V1]], [[C3]] : index // CHECK: "magic.op"([[I0]], [[I1]]) : (index, index) -> index // CHECK: scf.reduce // CHECK-NEXT: } // CHECK-NEXT: return