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360 lines
12 KiB
360 lines
12 KiB
// RUN: mlir-opt -allow-unregistered-dialect %s -pass-pipeline='func(parallel-loop-fusion)' -split-input-file | FileCheck %s
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func @fuse_empty_loops() {
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%c2 = constant 2 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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return
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}
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// CHECK-LABEL: func @fuse_empty_loops
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// CHECK: [[C2:%.*]] = constant 2 : index
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// CHECK: [[C0:%.*]] = constant 0 : index
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// CHECK: [[C1:%.*]] = constant 1 : index
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// CHECK: scf.parallel ([[I:%.*]], [[J:%.*]]) = ([[C0]], [[C0]])
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// CHECK-SAME: to ([[C2]], [[C2]]) step ([[C1]], [[C1]]) {
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// CHECK: scf.yield
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// CHECK: }
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// CHECK-NOT: scf.parallel
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// -----
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func @fuse_two(%A: memref<2x2xf32>, %B: memref<2x2xf32>,
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%C: memref<2x2xf32>, %result: memref<2x2xf32>) {
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%c2 = constant 2 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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%sum = alloc() : memref<2x2xf32>
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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%B_elem = load %B[%i, %j] : memref<2x2xf32>
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%C_elem = load %C[%i, %j] : memref<2x2xf32>
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%sum_elem = addf %B_elem, %C_elem : f32
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store %sum_elem, %sum[%i, %j] : memref<2x2xf32>
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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%sum_elem = load %sum[%i, %j] : memref<2x2xf32>
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%A_elem = load %A[%i, %j] : memref<2x2xf32>
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%product_elem = mulf %sum_elem, %A_elem : f32
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store %product_elem, %result[%i, %j] : memref<2x2xf32>
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scf.yield
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}
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dealloc %sum : memref<2x2xf32>
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return
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}
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// CHECK-LABEL: func @fuse_two
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// CHECK-SAME: ([[A:%.*]]: {{.*}}, [[B:%.*]]: {{.*}}, [[C:%.*]]: {{.*}},
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// CHECK-SAME: [[RESULT:%.*]]: {{.*}}) {
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// CHECK: [[C2:%.*]] = constant 2 : index
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// CHECK: [[C0:%.*]] = constant 0 : index
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// CHECK: [[C1:%.*]] = constant 1 : index
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// CHECK: [[SUM:%.*]] = alloc()
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// CHECK: scf.parallel ([[I:%.*]], [[J:%.*]]) = ([[C0]], [[C0]])
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// CHECK-SAME: to ([[C2]], [[C2]]) step ([[C1]], [[C1]]) {
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// CHECK: [[B_ELEM:%.*]] = load [[B]]{{\[}}[[I]], [[J]]]
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// CHECK: [[C_ELEM:%.*]] = load [[C]]{{\[}}[[I]], [[J]]]
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// CHECK: [[SUM_ELEM:%.*]] = addf [[B_ELEM]], [[C_ELEM]]
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// CHECK: store [[SUM_ELEM]], [[SUM]]{{\[}}[[I]], [[J]]]
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// CHECK: [[SUM_ELEM_:%.*]] = load [[SUM]]{{\[}}[[I]], [[J]]]
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// CHECK: [[A_ELEM:%.*]] = load [[A]]{{\[}}[[I]], [[J]]]
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// CHECK: [[PRODUCT_ELEM:%.*]] = mulf [[SUM_ELEM_]], [[A_ELEM]]
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// CHECK: store [[PRODUCT_ELEM]], [[RESULT]]{{\[}}[[I]], [[J]]]
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// CHECK: scf.yield
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// CHECK: }
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// CHECK: dealloc [[SUM]]
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// -----
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func @fuse_three(%lhs: memref<100x10xf32>, %rhs: memref<100xf32>,
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%result: memref<100x10xf32>) {
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%c100 = constant 100 : index
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%c10 = constant 10 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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%broadcast_rhs = alloc() : memref<100x10xf32>
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%diff = alloc() : memref<100x10xf32>
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scf.parallel (%i, %j) = (%c0, %c0) to (%c100, %c10) step (%c1, %c1) {
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%rhs_elem = load %rhs[%i] : memref<100xf32>
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store %rhs_elem, %broadcast_rhs[%i, %j] : memref<100x10xf32>
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c100, %c10) step (%c1, %c1) {
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%lhs_elem = load %lhs[%i, %j] : memref<100x10xf32>
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%broadcast_rhs_elem = load %broadcast_rhs[%i, %j] : memref<100x10xf32>
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%diff_elem = subf %lhs_elem, %broadcast_rhs_elem : f32
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store %diff_elem, %diff[%i, %j] : memref<100x10xf32>
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c100, %c10) step (%c1, %c1) {
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%diff_elem = load %diff[%i, %j] : memref<100x10xf32>
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%exp_elem = exp %diff_elem : f32
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store %exp_elem, %result[%i, %j] : memref<100x10xf32>
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scf.yield
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}
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dealloc %broadcast_rhs : memref<100x10xf32>
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dealloc %diff : memref<100x10xf32>
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return
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}
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// CHECK-LABEL: func @fuse_three
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// CHECK-SAME: ([[LHS:%.*]]: memref<100x10xf32>, [[RHS:%.*]]: memref<100xf32>,
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// CHECK-SAME: [[RESULT:%.*]]: memref<100x10xf32>) {
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// CHECK: [[C100:%.*]] = constant 100 : index
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// CHECK: [[C10:%.*]] = constant 10 : index
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// CHECK: [[C0:%.*]] = constant 0 : index
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// CHECK: [[C1:%.*]] = constant 1 : index
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// CHECK: [[BROADCAST_RHS:%.*]] = alloc()
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// CHECK: [[DIFF:%.*]] = alloc()
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// CHECK: scf.parallel ([[I:%.*]], [[J:%.*]]) = ([[C0]], [[C0]])
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// CHECK-SAME: to ([[C100]], [[C10]]) step ([[C1]], [[C1]]) {
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// CHECK: [[RHS_ELEM:%.*]] = load [[RHS]]{{\[}}[[I]]]
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// CHECK: store [[RHS_ELEM]], [[BROADCAST_RHS]]{{\[}}[[I]], [[J]]]
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// CHECK: [[LHS_ELEM:%.*]] = load [[LHS]]{{\[}}[[I]], [[J]]]
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// CHECK: [[BROADCAST_RHS_ELEM:%.*]] = load [[BROADCAST_RHS]]
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// CHECK: [[DIFF_ELEM:%.*]] = subf [[LHS_ELEM]], [[BROADCAST_RHS_ELEM]]
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// CHECK: store [[DIFF_ELEM]], [[DIFF]]{{\[}}[[I]], [[J]]]
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// CHECK: [[DIFF_ELEM_:%.*]] = load [[DIFF]]{{\[}}[[I]], [[J]]]
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// CHECK: [[EXP_ELEM:%.*]] = exp [[DIFF_ELEM_]]
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// CHECK: store [[EXP_ELEM]], [[RESULT]]{{\[}}[[I]], [[J]]]
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// CHECK: scf.yield
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// CHECK: }
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// CHECK: dealloc [[BROADCAST_RHS]]
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// CHECK: dealloc [[DIFF]]
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// -----
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func @do_not_fuse_nested_ploop1() {
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%c2 = constant 2 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.parallel (%k, %l) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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return
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}
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// CHECK-LABEL: func @do_not_fuse_nested_ploop1
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// CHECK: scf.parallel
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// CHECK: scf.parallel
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// CHECK: scf.parallel
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// -----
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func @do_not_fuse_nested_ploop2() {
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%c2 = constant 2 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.parallel (%k, %l) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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scf.yield
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}
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return
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}
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// CHECK-LABEL: func @do_not_fuse_nested_ploop2
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// CHECK: scf.parallel
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// CHECK: scf.parallel
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// CHECK: scf.parallel
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// -----
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func @do_not_fuse_loops_unmatching_num_loops() {
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%c2 = constant 2 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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scf.parallel (%i) = (%c0) to (%c2) step (%c1) {
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scf.yield
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}
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return
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}
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// CHECK-LABEL: func @do_not_fuse_loops_unmatching_num_loops
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// CHECK: scf.parallel
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// CHECK: scf.parallel
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// -----
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func @do_not_fuse_loops_with_side_effecting_ops_in_between() {
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%c2 = constant 2 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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%buffer = alloc() : memref<2x2xf32>
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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return
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}
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// CHECK-LABEL: func @do_not_fuse_loops_with_side_effecting_ops_in_between
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// CHECK: scf.parallel
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// CHECK: scf.parallel
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// -----
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func @do_not_fuse_loops_unmatching_iteration_space() {
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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%c2 = constant 2 : index
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%c4 = constant 4 : index
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scf.parallel (%i, %j) = (%c0, %c0) to (%c4, %c4) step (%c2, %c2) {
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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return
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}
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// CHECK-LABEL: func @do_not_fuse_loops_unmatching_iteration_space
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// CHECK: scf.parallel
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// CHECK: scf.parallel
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// -----
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func @do_not_fuse_unmatching_write_read_patterns(
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%A: memref<2x2xf32>, %B: memref<2x2xf32>,
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%C: memref<2x2xf32>, %result: memref<2x2xf32>) {
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%c2 = constant 2 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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%common_buf = alloc() : memref<2x2xf32>
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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%B_elem = load %B[%i, %j] : memref<2x2xf32>
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%C_elem = load %C[%i, %j] : memref<2x2xf32>
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%sum_elem = addf %B_elem, %C_elem : f32
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store %sum_elem, %common_buf[%i, %j] : memref<2x2xf32>
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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%k = addi %i, %c1 : index
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%sum_elem = load %common_buf[%k, %j] : memref<2x2xf32>
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%A_elem = load %A[%i, %j] : memref<2x2xf32>
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%product_elem = mulf %sum_elem, %A_elem : f32
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store %product_elem, %result[%i, %j] : memref<2x2xf32>
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scf.yield
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}
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dealloc %common_buf : memref<2x2xf32>
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return
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}
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// CHECK-LABEL: func @do_not_fuse_unmatching_write_read_patterns
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// CHECK: scf.parallel
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// CHECK: scf.parallel
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// -----
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func @do_not_fuse_unmatching_read_write_patterns(
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%A: memref<2x2xf32>, %B: memref<2x2xf32>, %common_buf: memref<2x2xf32>) {
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%c2 = constant 2 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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%sum = alloc() : memref<2x2xf32>
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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%B_elem = load %B[%i, %j] : memref<2x2xf32>
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%C_elem = load %common_buf[%i, %j] : memref<2x2xf32>
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%sum_elem = addf %B_elem, %C_elem : f32
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store %sum_elem, %sum[%i, %j] : memref<2x2xf32>
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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%k = addi %i, %c1 : index
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%sum_elem = load %sum[%k, %j] : memref<2x2xf32>
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%A_elem = load %A[%i, %j] : memref<2x2xf32>
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%product_elem = mulf %sum_elem, %A_elem : f32
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store %product_elem, %common_buf[%j, %i] : memref<2x2xf32>
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scf.yield
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}
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dealloc %sum : memref<2x2xf32>
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return
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}
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// CHECK-LABEL: func @do_not_fuse_unmatching_read_write_patterns
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// CHECK: scf.parallel
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// CHECK: scf.parallel
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// -----
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func @do_not_fuse_loops_with_memref_defined_in_loop_bodies() {
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%c2 = constant 2 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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%buffer = alloc() : memref<2x2xf32>
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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%A = subview %buffer[%c0, %c0][%c2, %c2][%c1, %c1]
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: memref<2x2xf32> to memref<?x?xf32, offset: ?, strides:[?, ?]>
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%A_elem = load %A[%i, %j] : memref<?x?xf32, offset: ?, strides:[?, ?]>
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scf.yield
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}
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return
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}
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// CHECK-LABEL: func @do_not_fuse_loops_with_memref_defined_in_loop_bodies
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// CHECK: scf.parallel
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// CHECK: scf.parallel
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// -----
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func @nested_fuse(%A: memref<2x2xf32>, %B: memref<2x2xf32>,
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%C: memref<2x2xf32>, %result: memref<2x2xf32>) {
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%c2 = constant 2 : index
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%c0 = constant 0 : index
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%c1 = constant 1 : index
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%sum = alloc() : memref<2x2xf32>
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scf.parallel (%k) = (%c0) to (%c2) step (%c1) {
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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%B_elem = load %B[%i, %j] : memref<2x2xf32>
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%C_elem = load %C[%i, %j] : memref<2x2xf32>
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%sum_elem = addf %B_elem, %C_elem : f32
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store %sum_elem, %sum[%i, %j] : memref<2x2xf32>
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scf.yield
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}
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scf.parallel (%i, %j) = (%c0, %c0) to (%c2, %c2) step (%c1, %c1) {
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%sum_elem = load %sum[%i, %j] : memref<2x2xf32>
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%A_elem = load %A[%i, %j] : memref<2x2xf32>
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%product_elem = mulf %sum_elem, %A_elem : f32
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store %product_elem, %result[%i, %j] : memref<2x2xf32>
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scf.yield
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}
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}
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dealloc %sum : memref<2x2xf32>
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return
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}
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// CHECK-LABEL: func @nested_fuse
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// CHECK-SAME: ([[A:%.*]]: {{.*}}, [[B:%.*]]: {{.*}}, [[C:%.*]]: {{.*}},
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// CHECK-SAME: [[RESULT:%.*]]: {{.*}}) {
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// CHECK: [[C2:%.*]] = constant 2 : index
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// CHECK: [[C0:%.*]] = constant 0 : index
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// CHECK: [[C1:%.*]] = constant 1 : index
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// CHECK: [[SUM:%.*]] = alloc()
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// CHECK: scf.parallel
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// CHECK: scf.parallel ([[I:%.*]], [[J:%.*]]) = ([[C0]], [[C0]])
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// CHECK-SAME: to ([[C2]], [[C2]]) step ([[C1]], [[C1]]) {
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// CHECK: [[B_ELEM:%.*]] = load [[B]]{{\[}}[[I]], [[J]]]
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// CHECK: [[C_ELEM:%.*]] = load [[C]]{{\[}}[[I]], [[J]]]
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// CHECK: [[SUM_ELEM:%.*]] = addf [[B_ELEM]], [[C_ELEM]]
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// CHECK: store [[SUM_ELEM]], [[SUM]]{{\[}}[[I]], [[J]]]
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// CHECK: [[SUM_ELEM_:%.*]] = load [[SUM]]{{\[}}[[I]], [[J]]]
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// CHECK: [[A_ELEM:%.*]] = load [[A]]{{\[}}[[I]], [[J]]]
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// CHECK: [[PRODUCT_ELEM:%.*]] = mulf [[SUM_ELEM_]], [[A_ELEM]]
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// CHECK: store [[PRODUCT_ELEM]], [[RESULT]]{{\[}}[[I]], [[J]]]
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// CHECK: scf.yield
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// CHECK: }
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// CHECK: }
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// CHECK: dealloc [[SUM]]
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