for-loop-specialization.mlir
1.63 KB
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// RUN: mlir-opt %s -for-loop-specialization -split-input-file | FileCheck %s
#map0 = affine_map<()[s0, s1] -> (1024, s0 - s1)>
#map1 = affine_map<()[s0, s1] -> (64, s0 - s1)>
func @for(%outer: index, %A: memref<?xf32>, %B: memref<?xf32>,
%C: memref<?xf32>, %result: memref<?xf32>) {
%c0 = constant 0 : index
%c1 = constant 1 : index
%d0 = dim %A, %c0 : memref<?xf32>
%b0 = affine.min #map0()[%d0, %outer]
scf.for %i0 = %c0 to %b0 step %c1 {
%B_elem = load %B[%i0] : memref<?xf32>
%C_elem = load %C[%i0] : memref<?xf32>
%sum_elem = addf %B_elem, %C_elem : f32
store %sum_elem, %result[%i0] : memref<?xf32>
}
return
}
// CHECK-LABEL: func @for(
// CHECK-SAME: [[ARG0:%.*]]: index, [[ARG1:%.*]]: memref<?xf32>, [[ARG2:%.*]]: memref<?xf32>, [[ARG3:%.*]]: memref<?xf32>, [[ARG4:%.*]]: memref<?xf32>) {
// CHECK: [[CST_0:%.*]] = constant 0 : index
// CHECK: [[CST_1:%.*]] = constant 1 : index
// CHECK: [[DIM_0:%.*]] = dim [[ARG1]], [[CST_0]] : memref<?xf32>
// CHECK: [[MIN:%.*]] = affine.min #map0(){{\[}}[[DIM_0]], [[ARG0]]]
// CHECK: [[CST_1024:%.*]] = constant 1024 : index
// CHECK: [[PRED:%.*]] = cmpi "eq", [[MIN]], [[CST_1024]] : index
// CHECK: scf.if [[PRED]] {
// CHECK: scf.for [[IDX0:%.*]] = [[CST_0]] to [[CST_1024]] step [[CST_1]] {
// CHECK: store
// CHECK: }
// CHECK: } else {
// CHECK: scf.for [[IDX0:%.*]] = [[CST_0]] to [[MIN]] step [[CST_1]] {
// CHECK: store
// CHECK: }
// CHECK: }
// CHECK: return
// CHECK: }