| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -loop-vectorize -force-vector-width=2 -S %s | FileCheck %s |
| |
| ; Tests where the indices of some accesses are clamped to a small range. |
| |
| ; FIXME: At the moment, the runtime checks require that the indices do not wrap |
| ; and runtime checks are emitted to ensure that. The clamped indices do |
| ; wrap, so the vector loops are dead at the moment. But it is still |
| ; possible to compute the bounds of the accesses and generate proper |
| ; runtime checks. |
| |
| ; The relevant bounds for %gep.A are [%A, %A+4). |
| define void @load_clamped_index(i32* %A, i32* %B, i32 %N) { |
| ; CHECK-LABEL: @load_clamped_index( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[B1:%.*]] = bitcast i32* [[B:%.*]] to i8* |
| ; CHECK-NEXT: [[A3:%.*]] = bitcast i32* [[A:%.*]] to i8* |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[N:%.*]], 2 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]] |
| ; CHECK: vector.scevcheck: |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[N]], -1 |
| ; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[TMP0]] to i2 |
| ; CHECK-NEXT: [[TMP2:%.*]] = add i2 0, [[TMP1]] |
| ; CHECK-NEXT: [[TMP3:%.*]] = sub i2 0, [[TMP1]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = icmp ugt i2 [[TMP3]], 0 |
| ; CHECK-NEXT: [[TMP5:%.*]] = icmp ult i2 [[TMP2]], 0 |
| ; CHECK-NEXT: [[TMP6:%.*]] = select i1 false, i1 [[TMP4]], i1 [[TMP5]] |
| ; CHECK-NEXT: [[TMP7:%.*]] = icmp ugt i32 [[TMP0]], 3 |
| ; CHECK-NEXT: [[TMP8:%.*]] = or i1 [[TMP6]], [[TMP7]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = or i1 false, [[TMP8]] |
| ; CHECK-NEXT: br i1 [[TMP9]], label [[SCALAR_PH]], label [[VECTOR_MEMCHECK:%.*]] |
| ; CHECK: vector.memcheck: |
| ; CHECK-NEXT: [[TMP10:%.*]] = add i32 [[N]], -1 |
| ; CHECK-NEXT: [[TMP11:%.*]] = zext i32 [[TMP10]] to i64 |
| ; CHECK-NEXT: [[TMP12:%.*]] = add nuw nsw i64 [[TMP11]], 1 |
| ; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i32, i32* [[B]], i64 [[TMP12]] |
| ; CHECK-NEXT: [[SCEVGEP2:%.*]] = bitcast i32* [[SCEVGEP]] to i8* |
| ; CHECK-NEXT: [[SCEVGEP4:%.*]] = getelementptr i32, i32* [[A]], i64 [[TMP12]] |
| ; CHECK-NEXT: [[SCEVGEP45:%.*]] = bitcast i32* [[SCEVGEP4]] to i8* |
| ; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult i8* [[B1]], [[SCEVGEP45]] |
| ; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult i8* [[A3]], [[SCEVGEP2]] |
| ; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] |
| ; CHECK-NEXT: br i1 [[FOUND_CONFLICT]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[N]], 2 |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[N]], [[N_MOD_VF]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP13:%.*]] = add i32 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP14:%.*]] = urem i32 [[TMP13]], 4 |
| ; CHECK-NEXT: [[TMP15:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 [[TMP14]] |
| ; CHECK-NEXT: [[TMP16:%.*]] = getelementptr inbounds i32, i32* [[TMP15]], i32 0 |
| ; CHECK-NEXT: [[TMP17:%.*]] = bitcast i32* [[TMP16]] to <2 x i32>* |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i32>, <2 x i32>* [[TMP17]], align 4, !alias.scope !0 |
| ; CHECK-NEXT: [[TMP18:%.*]] = add <2 x i32> [[WIDE_LOAD]], <i32 10, i32 10> |
| ; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[TMP13]] |
| ; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds i32, i32* [[TMP19]], i32 0 |
| ; CHECK-NEXT: [[TMP21:%.*]] = bitcast i32* [[TMP20]] to <2 x i32>* |
| ; CHECK-NEXT: store <2 x i32> [[TMP18]], <2 x i32>* [[TMP21]], align 4, !alias.scope !3, !noalias !0 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2 |
| ; CHECK-NEXT: [[TMP22:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP22]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[VECTOR_MEMCHECK]] ] |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[CLAMPED_INDEX:%.*]] = urem i32 [[IV]], 4 |
| ; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 [[CLAMPED_INDEX]] |
| ; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP_A]], align 4 |
| ; CHECK-NEXT: [[ADD:%.*]] = add i32 [[LV]], 10 |
| ; CHECK-NEXT: [[GEP_B:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[IV]] |
| ; CHECK-NEXT: store i32 [[ADD]], i32* [[GEP_B]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1 |
| ; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[IV_NEXT]], [[N]] |
| ; CHECK-NEXT: br i1 [[COND]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP7:![0-9]+]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] |
| %clamped.index = urem i32 %iv, 4 |
| %gep.A = getelementptr inbounds i32, i32* %A, i32 %clamped.index |
| %lv = load i32, i32* %gep.A |
| %add = add i32 %lv, 10 |
| %gep.B = getelementptr inbounds i32, i32* %B, i32 %iv |
| store i32 %add, i32* %gep.B |
| %iv.next = add nuw nsw i32 %iv, 1 |
| %cond = icmp eq i32 %iv.next, %N |
| br i1 %cond, label %exit, label %loop |
| |
| exit: |
| ret void |
| } |
| |
| ; The relevant bounds for %gep.A are [%A, %A+4). |
| define void @store_clamped_index(i32* %A, i32* %B, i32 %N) { |
| ; CHECK-LABEL: @store_clamped_index( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[B1:%.*]] = bitcast i32* [[B:%.*]] to i8* |
| ; CHECK-NEXT: [[A3:%.*]] = bitcast i32* [[A:%.*]] to i8* |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[N:%.*]], 2 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]] |
| ; CHECK: vector.scevcheck: |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[N]], -1 |
| ; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[TMP0]] to i2 |
| ; CHECK-NEXT: [[TMP2:%.*]] = add i2 0, [[TMP1]] |
| ; CHECK-NEXT: [[TMP3:%.*]] = sub i2 0, [[TMP1]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = icmp ugt i2 [[TMP3]], 0 |
| ; CHECK-NEXT: [[TMP5:%.*]] = icmp ult i2 [[TMP2]], 0 |
| ; CHECK-NEXT: [[TMP6:%.*]] = select i1 false, i1 [[TMP4]], i1 [[TMP5]] |
| ; CHECK-NEXT: [[TMP7:%.*]] = icmp ugt i32 [[TMP0]], 3 |
| ; CHECK-NEXT: [[TMP8:%.*]] = or i1 [[TMP6]], [[TMP7]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = or i1 false, [[TMP8]] |
| ; CHECK-NEXT: br i1 [[TMP9]], label [[SCALAR_PH]], label [[VECTOR_MEMCHECK:%.*]] |
| ; CHECK: vector.memcheck: |
| ; CHECK-NEXT: [[TMP10:%.*]] = add i32 [[N]], -1 |
| ; CHECK-NEXT: [[TMP11:%.*]] = zext i32 [[TMP10]] to i64 |
| ; CHECK-NEXT: [[TMP12:%.*]] = add nuw nsw i64 [[TMP11]], 1 |
| ; CHECK-NEXT: [[SCEVGEP:%.*]] = getelementptr i32, i32* [[B]], i64 [[TMP12]] |
| ; CHECK-NEXT: [[SCEVGEP2:%.*]] = bitcast i32* [[SCEVGEP]] to i8* |
| ; CHECK-NEXT: [[SCEVGEP4:%.*]] = getelementptr i32, i32* [[A]], i64 [[TMP12]] |
| ; CHECK-NEXT: [[SCEVGEP45:%.*]] = bitcast i32* [[SCEVGEP4]] to i8* |
| ; CHECK-NEXT: [[BOUND0:%.*]] = icmp ult i8* [[B1]], [[SCEVGEP45]] |
| ; CHECK-NEXT: [[BOUND1:%.*]] = icmp ult i8* [[A3]], [[SCEVGEP2]] |
| ; CHECK-NEXT: [[FOUND_CONFLICT:%.*]] = and i1 [[BOUND0]], [[BOUND1]] |
| ; CHECK-NEXT: br i1 [[FOUND_CONFLICT]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[N]], 2 |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[N]], [[N_MOD_VF]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP13:%.*]] = add i32 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP14:%.*]] = urem i32 [[TMP13]], 4 |
| ; CHECK-NEXT: [[TMP15:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[TMP13]] |
| ; CHECK-NEXT: [[TMP16:%.*]] = getelementptr inbounds i32, i32* [[TMP15]], i32 0 |
| ; CHECK-NEXT: [[TMP17:%.*]] = bitcast i32* [[TMP16]] to <2 x i32>* |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i32>, <2 x i32>* [[TMP17]], align 4, !alias.scope !8, !noalias !11 |
| ; CHECK-NEXT: [[TMP18:%.*]] = add <2 x i32> [[WIDE_LOAD]], <i32 10, i32 10> |
| ; CHECK-NEXT: [[TMP19:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 [[TMP14]] |
| ; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds i32, i32* [[TMP19]], i32 0 |
| ; CHECK-NEXT: [[TMP21:%.*]] = bitcast i32* [[TMP20]] to <2 x i32>* |
| ; CHECK-NEXT: store <2 x i32> [[TMP18]], <2 x i32>* [[TMP21]], align 4, !alias.scope !11 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2 |
| ; CHECK-NEXT: [[TMP22:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP22]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP13:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_SCEVCHECK]] ], [ 0, [[VECTOR_MEMCHECK]] ] |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[CLAMPED_INDEX:%.*]] = urem i32 [[IV]], 4 |
| ; CHECK-NEXT: [[GEP_B:%.*]] = getelementptr inbounds i32, i32* [[B]], i32 [[IV]] |
| ; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP_B]], align 4 |
| ; CHECK-NEXT: [[ADD:%.*]] = add i32 [[LV]], 10 |
| ; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 [[CLAMPED_INDEX]] |
| ; CHECK-NEXT: store i32 [[ADD]], i32* [[GEP_A]], align 4 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1 |
| ; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[IV_NEXT]], [[N]] |
| ; CHECK-NEXT: br i1 [[COND]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP14:![0-9]+]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] |
| %clamped.index = urem i32 %iv, 4 |
| %gep.B = getelementptr inbounds i32, i32* %B, i32 %iv |
| %lv = load i32, i32* %gep.B |
| %add = add i32 %lv, 10 |
| %gep.A = getelementptr inbounds i32, i32* %A, i32 %clamped.index |
| store i32 %add, i32* %gep.A |
| %iv.next = add nuw nsw i32 %iv, 1 |
| %cond = icmp eq i32 %iv.next, %N |
| br i1 %cond, label %exit, label %loop |
| |
| exit: |
| ret void |
| } |
| |
| define void @clamped_index_dependence_non_clamped(i32* %A, i32* %B, i32 %N) { |
| ; CHECK-LABEL: @clamped_index_dependence_non_clamped( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[GEP_B:%.*]] = getelementptr inbounds i32, i32* [[B:%.*]], i32 [[IV]] |
| ; CHECK-NEXT: [[LV:%.*]] = load i32, i32* [[GEP_B]], align 4 |
| ; CHECK-NEXT: [[GEP_A_1:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i32 [[IV]] |
| ; CHECK-NEXT: [[LV_A:%.*]] = load i32, i32* [[GEP_A_1]], align 4 |
| ; CHECK-NEXT: [[ADD:%.*]] = add i32 [[LV]], [[LV_A]] |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1 |
| ; CHECK-NEXT: [[CLAMPED_INDEX:%.*]] = urem i32 [[IV_NEXT]], 4 |
| ; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 [[CLAMPED_INDEX]] |
| ; CHECK-NEXT: store i32 [[ADD]], i32* [[GEP_A]], align 4 |
| ; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[IV_NEXT]], [[N:%.*]] |
| ; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] |
| %gep.B = getelementptr inbounds i32, i32* %B, i32 %iv |
| %lv = load i32, i32* %gep.B |
| %gep.A.1 = getelementptr inbounds i32, i32* %A, i32 %iv |
| %lv.A = load i32, i32* %gep.A.1 |
| %add = add i32 %lv, %lv.A |
| |
| %iv.next = add nuw nsw i32 %iv, 1 |
| %clamped.index = urem i32 %iv.next, 4 |
| %gep.A = getelementptr inbounds i32, i32* %A, i32 %clamped.index |
| store i32 %add, i32* %gep.A |
| %cond = icmp eq i32 %iv.next, %N |
| br i1 %cond, label %exit, label %loop |
| |
| exit: |
| ret void |
| } |
| |
| define void @clamped_index_dependence_clamped_index(i32* %A, i32* %B, i32 %N) { |
| ; CHECK-LABEL: @clamped_index_dependence_clamped_index( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ 0, [[ENTRY:%.*]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[CLAMPED_INDEX_1:%.*]] = urem i32 [[IV]], 4 |
| ; CHECK-NEXT: [[GEP_A_1:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i32 [[CLAMPED_INDEX_1]] |
| ; CHECK-NEXT: [[LV_A:%.*]] = load i32, i32* [[GEP_A_1]], align 4 |
| ; CHECK-NEXT: [[ADD:%.*]] = add i32 [[LV_A]], 10 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1 |
| ; CHECK-NEXT: [[CLAMPED_INDEX:%.*]] = urem i32 [[IV_NEXT]], 4 |
| ; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 [[CLAMPED_INDEX]] |
| ; CHECK-NEXT: store i32 [[ADD]], i32* [[GEP_A]], align 4 |
| ; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[IV_NEXT]], [[N:%.*]] |
| ; CHECK-NEXT: br i1 [[COND]], label [[EXIT:%.*]], label [[LOOP]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] |
| %clamped.index.1 = urem i32 %iv, 4 |
| %gep.A.1 = getelementptr inbounds i32, i32* %A, i32 %clamped.index.1 |
| %lv.A = load i32, i32* %gep.A.1 |
| %add = add i32 %lv.A, 10 |
| |
| %iv.next = add nuw nsw i32 %iv, 1 |
| %clamped.index = urem i32 %iv.next, 4 |
| %gep.A = getelementptr inbounds i32, i32* %A, i32 %clamped.index |
| store i32 %add, i32* %gep.A |
| %cond = icmp eq i32 %iv.next, %N |
| br i1 %cond, label %exit, label %loop |
| |
| exit: |
| ret void |
| } |
| |
| define void @clamped_index_equal_dependence(i32* %A, i32* %B, i32 %N) { |
| ; CHECK-LABEL: @clamped_index_equal_dependence( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[N:%.*]], 2 |
| ; CHECK-NEXT: br i1 [[MIN_ITERS_CHECK]], label [[SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]] |
| ; CHECK: vector.scevcheck: |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i32 [[N]], -1 |
| ; CHECK-NEXT: [[TMP1:%.*]] = trunc i32 [[TMP0]] to i2 |
| ; CHECK-NEXT: [[TMP2:%.*]] = add i2 0, [[TMP1]] |
| ; CHECK-NEXT: [[TMP3:%.*]] = sub i2 0, [[TMP1]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = icmp ugt i2 [[TMP3]], 0 |
| ; CHECK-NEXT: [[TMP5:%.*]] = icmp ult i2 [[TMP2]], 0 |
| ; CHECK-NEXT: [[TMP6:%.*]] = select i1 false, i1 [[TMP4]], i1 [[TMP5]] |
| ; CHECK-NEXT: [[TMP7:%.*]] = icmp ugt i32 [[TMP0]], 3 |
| ; CHECK-NEXT: [[TMP8:%.*]] = or i1 [[TMP6]], [[TMP7]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = or i1 false, [[TMP8]] |
| ; CHECK-NEXT: br i1 [[TMP9]], label [[SCALAR_PH]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[N_MOD_VF:%.*]] = urem i32 [[N]], 2 |
| ; CHECK-NEXT: [[N_VEC:%.*]] = sub i32 [[N]], [[N_MOD_VF]] |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP10:%.*]] = add i32 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP11:%.*]] = urem i32 [[TMP10]], 4 |
| ; CHECK-NEXT: [[TMP12:%.*]] = getelementptr inbounds i32, i32* [[A:%.*]], i32 [[TMP11]] |
| ; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds i32, i32* [[TMP12]], i32 0 |
| ; CHECK-NEXT: [[TMP14:%.*]] = bitcast i32* [[TMP13]] to <2 x i32>* |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i32>, <2 x i32>* [[TMP14]], align 4 |
| ; CHECK-NEXT: [[TMP15:%.*]] = add <2 x i32> [[WIDE_LOAD]], <i32 10, i32 10> |
| ; CHECK-NEXT: [[TMP16:%.*]] = bitcast i32* [[TMP13]] to <2 x i32>* |
| ; CHECK-NEXT: store <2 x i32> [[TMP15]], <2 x i32>* [[TMP16]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2 |
| ; CHECK-NEXT: [[TMP17:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[TMP17]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP15:![0-9]+]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 [[N]], [[N_VEC]] |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ [[N_VEC]], [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ], [ 0, [[VECTOR_SCEVCHECK]] ] |
| ; CHECK-NEXT: br label [[LOOP:%.*]] |
| ; CHECK: loop: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ] |
| ; CHECK-NEXT: [[CLAMPED_INDEX:%.*]] = urem i32 [[IV]], 4 |
| ; CHECK-NEXT: [[GEP_A:%.*]] = getelementptr inbounds i32, i32* [[A]], i32 [[CLAMPED_INDEX]] |
| ; CHECK-NEXT: [[LV_A:%.*]] = load i32, i32* [[GEP_A]], align 4 |
| ; CHECK-NEXT: [[ADD:%.*]] = add i32 [[LV_A]], 10 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i32 [[IV]], 1 |
| ; CHECK-NEXT: store i32 [[ADD]], i32* [[GEP_A]], align 4 |
| ; CHECK-NEXT: [[COND:%.*]] = icmp eq i32 [[IV_NEXT]], [[N]] |
| ; CHECK-NEXT: br i1 [[COND]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP16:![0-9]+]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop |
| |
| loop: |
| %iv = phi i32 [ 0, %entry ], [ %iv.next, %loop ] |
| %clamped.index = urem i32 %iv, 4 |
| %gep.A = getelementptr inbounds i32, i32* %A, i32 %clamped.index |
| %lv.A = load i32, i32* %gep.A |
| %add = add i32 %lv.A, 10 |
| |
| %iv.next = add nuw nsw i32 %iv, 1 |
| store i32 %add, i32* %gep.A |
| %cond = icmp eq i32 %iv.next, %N |
| br i1 %cond, label %exit, label %loop |
| |
| exit: |
| ret void |
| } |