| ; NOTE: Assertions have been autogenerated by utils/update_test_checks.py |
| ; RUN: opt -loop-vectorize -force-vector-width=2 -S %s | FileCheck %s |
| |
| @src = external global [32 x i16], align 1 |
| @dst = external global [32 x i16], align 1 |
| |
| ; The load in the loop does not need predication, because the accessed memory |
| ; is de-referenceable for all loop iterations. |
| define void @single_incoming_phi_no_blend_mask(i64 %a, i64 %b) { |
| ; CHECK-LABEL: @single_incoming_phi_no_blend_mask( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[A:%.*]], i32 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i64> [[BROADCAST_SPLATINSERT]], <2 x i64> poison, <2 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[INDEX]] to i16 |
| ; CHECK-NEXT: [[TMP3:%.*]] = add i16 [[TMP2]], 0 |
| ; CHECK-NEXT: [[TMP4:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 [[TMP3]] |
| ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds i16, i16* [[TMP4]], i32 0 |
| ; CHECK-NEXT: [[TMP6:%.*]] = bitcast i16* [[TMP5]] to <2 x i16>* |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i16>, <2 x i16>* [[TMP6]], align 1 |
| ; CHECK-NEXT: [[TMP7:%.*]] = icmp sgt <2 x i64> [[VEC_IND]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = xor <2 x i1> [[TMP7]], <i1 true, i1 true> |
| ; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[TMP7]], <2 x i16> <i16 1, i16 1>, <2 x i16> [[WIDE_LOAD]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @dst, i16 0, i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP10:%.*]] = getelementptr inbounds i16, i16* [[TMP9]], i32 0 |
| ; CHECK-NEXT: [[TMP11:%.*]] = bitcast i16* [[TMP10]] to <2 x i16>* |
| ; CHECK-NEXT: store <2 x i16> [[PREDPHI]], <2 x i16>* [[TMP11]], align 2 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2 |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2> |
| ; CHECK-NEXT: [[TMP12:%.*]] = icmp eq i64 [[INDEX_NEXT]], 32 |
| ; CHECK-NEXT: br i1 [[TMP12]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP0:!llvm.loop !.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 32, 32 |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 32, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: br label [[LOOP_HEADER:%.*]] |
| ; CHECK: loop.header: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ] |
| ; CHECK-NEXT: [[IV_TRUNC:%.*]] = trunc i64 [[IV]] to i16 |
| ; CHECK-NEXT: br label [[LOOP_COND:%.*]] |
| ; CHECK: loop.cond: |
| ; CHECK-NEXT: [[BLEND:%.*]] = phi i16 [ [[IV_TRUNC]], [[LOOP_HEADER]] ] |
| ; CHECK-NEXT: [[SRC_PTR:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 [[BLEND]] |
| ; CHECK-NEXT: [[LV:%.*]] = load i16, i16* [[SRC_PTR]], align 1 |
| ; CHECK-NEXT: [[CMP_B:%.*]] = icmp sgt i64 [[IV]], [[A]] |
| ; CHECK-NEXT: br i1 [[CMP_B]], label [[LOOP_NEXT:%.*]], label [[LOOP_LATCH]] |
| ; CHECK: loop.next: |
| ; CHECK-NEXT: br label [[LOOP_LATCH]] |
| ; CHECK: loop.latch: |
| ; CHECK-NEXT: [[RES:%.*]] = phi i16 [ [[LV]], [[LOOP_COND]] ], [ 1, [[LOOP_NEXT]] ] |
| ; CHECK-NEXT: [[DST_PTR:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @dst, i16 0, i64 [[IV]] |
| ; CHECK-NEXT: store i16 [[RES]], i16* [[DST_PTR]], align 2 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[CMP439:%.*]] = icmp ult i64 [[IV]], 31 |
| ; CHECK-NEXT: br i1 [[CMP439]], label [[LOOP_HEADER]], label [[EXIT]], [[LOOP2:!llvm.loop !.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop.header |
| |
| loop.header: |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ] |
| %iv.trunc = trunc i64 %iv to i16 |
| br label %loop.cond |
| |
| loop.cond: |
| %blend = phi i16 [ %iv.trunc, %loop.header ] |
| %src.ptr = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 %blend |
| %lv = load i16, i16* %src.ptr, align 1 |
| %cmp.b = icmp sgt i64 %iv, %a |
| br i1 %cmp.b, label %loop.next, label %loop.latch |
| |
| loop.next: |
| br label %loop.latch |
| |
| loop.latch: |
| %res = phi i16 [ %lv, %loop.cond ], [ 1, %loop.next ] |
| %dst.ptr = getelementptr inbounds [32 x i16], [32 x i16]* @dst, i16 0, i64 %iv |
| store i16 %res, i16* %dst.ptr |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %cmp439 = icmp ult i64 %iv, 31 |
| br i1 %cmp439, label %loop.header, label %exit |
| |
| exit: |
| ret void |
| } |
| |
| ; The load in the loop does not need predication, because the accessed memory |
| ; is de-referenceable for all loop iterations. |
| define void @single_incoming_phi_with_blend_mask(i64 %a, i64 %b) { |
| ; CHECK-LABEL: @single_incoming_phi_with_blend_mask( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[A:%.*]], i32 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i64> [[BROADCAST_SPLATINSERT]], <2 x i64> poison, <2 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[TMP2:%.*]] = trunc i64 [[INDEX]] to i16 |
| ; CHECK-NEXT: [[TMP3:%.*]] = add i16 [[TMP2]], 0 |
| ; CHECK-NEXT: [[TMP4:%.*]] = icmp ugt <2 x i64> [[VEC_IND]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr [32 x i16], [32 x i16]* @src, i16 0, i16 [[TMP3]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = getelementptr i16, i16* [[TMP5]], i32 0 |
| ; CHECK-NEXT: [[TMP7:%.*]] = bitcast i16* [[TMP6]] to <2 x i16>* |
| ; CHECK-NEXT: [[WIDE_LOAD:%.*]] = load <2 x i16>, <2 x i16>* [[TMP7]], align 1 |
| ; CHECK-NEXT: [[TMP8:%.*]] = icmp sgt <2 x i64> [[VEC_IND]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP9:%.*]] = xor <2 x i1> [[TMP4]], <i1 true, i1 true> |
| ; CHECK-NEXT: [[TMP10:%.*]] = xor <2 x i1> [[TMP8]], <i1 true, i1 true> |
| ; CHECK-NEXT: [[TMP11:%.*]] = select <2 x i1> [[TMP4]], <2 x i1> [[TMP10]], <2 x i1> zeroinitializer |
| ; CHECK-NEXT: [[TMP12:%.*]] = select <2 x i1> [[TMP4]], <2 x i1> [[TMP8]], <2 x i1> zeroinitializer |
| ; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[TMP11]], <2 x i16> [[WIDE_LOAD]], <2 x i16> zeroinitializer |
| ; CHECK-NEXT: [[PREDPHI1:%.*]] = select <2 x i1> [[TMP12]], <2 x i16> <i16 1, i16 1>, <2 x i16> [[PREDPHI]] |
| ; CHECK-NEXT: [[TMP13:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @dst, i16 0, i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP14:%.*]] = getelementptr inbounds i16, i16* [[TMP13]], i32 0 |
| ; CHECK-NEXT: [[TMP15:%.*]] = bitcast i16* [[TMP14]] to <2 x i16>* |
| ; CHECK-NEXT: store <2 x i16> [[PREDPHI1]], <2 x i16>* [[TMP15]], align 2 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2 |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2> |
| ; CHECK-NEXT: [[TMP16:%.*]] = icmp eq i64 [[INDEX_NEXT]], 32 |
| ; CHECK-NEXT: br i1 [[TMP16]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP4:!llvm.loop !.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 32, 32 |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 32, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: br label [[LOOP_HEADER:%.*]] |
| ; CHECK: loop.header: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ] |
| ; CHECK-NEXT: [[IV_TRUNC:%.*]] = trunc i64 [[IV]] to i16 |
| ; CHECK-NEXT: [[CMP_A:%.*]] = icmp ugt i64 [[IV]], [[A]] |
| ; CHECK-NEXT: br i1 [[CMP_A]], label [[LOOP_COND:%.*]], label [[LOOP_LATCH]] |
| ; CHECK: loop.cond: |
| ; CHECK-NEXT: [[BLEND:%.*]] = phi i16 [ [[IV_TRUNC]], [[LOOP_HEADER]] ] |
| ; CHECK-NEXT: [[SRC_PTR:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 [[BLEND]] |
| ; CHECK-NEXT: [[LV:%.*]] = load i16, i16* [[SRC_PTR]], align 1 |
| ; CHECK-NEXT: [[CMP_B:%.*]] = icmp sgt i64 [[IV]], [[A]] |
| ; CHECK-NEXT: br i1 [[CMP_B]], label [[LOOP_NEXT:%.*]], label [[LOOP_LATCH]] |
| ; CHECK: loop.next: |
| ; CHECK-NEXT: br label [[LOOP_LATCH]] |
| ; CHECK: loop.latch: |
| ; CHECK-NEXT: [[RES:%.*]] = phi i16 [ 0, [[LOOP_HEADER]] ], [ [[LV]], [[LOOP_COND]] ], [ 1, [[LOOP_NEXT]] ] |
| ; CHECK-NEXT: [[DST_PTR:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @dst, i16 0, i64 [[IV]] |
| ; CHECK-NEXT: store i16 [[RES]], i16* [[DST_PTR]], align 2 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[CMP439:%.*]] = icmp ult i64 [[IV]], 31 |
| ; CHECK-NEXT: br i1 [[CMP439]], label [[LOOP_HEADER]], label [[EXIT]], [[LOOP5:!llvm.loop !.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop.header |
| |
| loop.header: |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ] |
| %iv.trunc = trunc i64 %iv to i16 |
| %cmp.a = icmp ugt i64 %iv, %a |
| br i1 %cmp.a, label %loop.cond, label %loop.latch |
| |
| loop.cond: |
| %blend = phi i16 [ %iv.trunc, %loop.header ] |
| %src.ptr = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 %blend |
| %lv = load i16, i16* %src.ptr, align 1 |
| %cmp.b = icmp sgt i64 %iv, %a |
| br i1 %cmp.b, label %loop.next, label %loop.latch |
| |
| loop.next: |
| br label %loop.latch |
| |
| loop.latch: |
| %res = phi i16 [ 0, %loop.header ], [ %lv, %loop.cond ], [ 1, %loop.next ] |
| %dst.ptr = getelementptr inbounds [32 x i16], [32 x i16]* @dst, i16 0, i64 %iv |
| store i16 %res, i16* %dst.ptr |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %cmp439 = icmp ult i64 %iv, 31 |
| br i1 %cmp439, label %loop.header, label %exit |
| |
| exit: |
| ret void |
| } |
| |
| define void @multiple_incoming_phi_with_blend_mask(i64 %a) { |
| ; CHECK-LABEL: @multiple_incoming_phi_with_blend_mask( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[A:%.*]], i32 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i64> [[BROADCAST_SPLATINSERT]], <2 x i64> poison, <2 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND1:%.*]] = phi <2 x i16> [ <i16 0, i16 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT2:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND3:%.*]] = phi <2 x i16> [ <i16 0, i16 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT4:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[TMP2:%.*]] = icmp ugt <2 x i64> [[VEC_IND]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP3:%.*]] = xor <2 x i1> [[TMP2]], <i1 true, i1 true> |
| ; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[TMP2]], <2 x i16> [[VEC_IND3]], <2 x i16> [[VEC_IND1]] |
| ; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x i16> [[PREDPHI]], i32 0 |
| ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 [[TMP4]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = extractelement <2 x i16> [[PREDPHI]], i32 1 |
| ; CHECK-NEXT: [[TMP7:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 [[TMP6]] |
| ; CHECK-NEXT: [[TMP8:%.*]] = load i16, i16* [[TMP5]], align 1 |
| ; CHECK-NEXT: [[TMP9:%.*]] = load i16, i16* [[TMP7]], align 1 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2 |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2> |
| ; CHECK-NEXT: [[VEC_IND_NEXT2]] = add <2 x i16> [[VEC_IND1]], <i16 2, i16 2> |
| ; CHECK-NEXT: [[VEC_IND_NEXT4]] = add <2 x i16> [[VEC_IND3]], <i16 2, i16 2> |
| ; CHECK-NEXT: [[TMP10:%.*]] = icmp eq i64 [[INDEX_NEXT]], 32 |
| ; CHECK-NEXT: br i1 [[TMP10]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP6:!llvm.loop !.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 32, 32 |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 32, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: br label [[LOOP_HEADER:%.*]] |
| ; CHECK: loop.header: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ] |
| ; CHECK-NEXT: [[IV_TRUNC:%.*]] = trunc i64 [[IV]] to i16 |
| ; CHECK-NEXT: [[IV_TRUNC_2:%.*]] = trunc i64 [[IV]] to i16 |
| ; CHECK-NEXT: [[CMP_A:%.*]] = icmp ugt i64 [[IV]], [[A]] |
| ; CHECK-NEXT: br i1 [[CMP_A]], label [[LOOP_NEXT:%.*]], label [[LOOP_LATCH]] |
| ; CHECK: loop.next: |
| ; CHECK-NEXT: br label [[LOOP_LATCH]] |
| ; CHECK: loop.latch: |
| ; CHECK-NEXT: [[BLEND:%.*]] = phi i16 [ [[IV_TRUNC]], [[LOOP_HEADER]] ], [ [[IV_TRUNC_2]], [[LOOP_NEXT]] ] |
| ; CHECK-NEXT: [[SRC_PTR:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 [[BLEND]] |
| ; CHECK-NEXT: [[LV:%.*]] = load i16, i16* [[SRC_PTR]], align 1 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[CMP439:%.*]] = icmp ult i64 [[IV]], 31 |
| ; CHECK-NEXT: br i1 [[CMP439]], label [[LOOP_HEADER]], label [[EXIT]], [[LOOP7:!llvm.loop !.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop.header |
| |
| loop.header: |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ] |
| %iv.trunc = trunc i64 %iv to i16 |
| %iv.trunc.2 = trunc i64 %iv to i16 |
| %cmp.a = icmp ugt i64 %iv, %a |
| br i1 %cmp.a, label %loop.next, label %loop.latch |
| |
| loop.next: |
| br label %loop.latch |
| |
| loop.latch: |
| %blend = phi i16 [ %iv.trunc, %loop.header ], [ %iv.trunc.2, %loop.next ] |
| %src.ptr = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 %blend |
| %lv = load i16, i16* %src.ptr, align 1 |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %cmp439 = icmp ult i64 %iv, 31 |
| br i1 %cmp439, label %loop.header, label %exit |
| |
| exit: |
| ret void |
| } |
| |
| ; The load in the loop needs predication, because the accessed memory is not |
| ; de-referencable for all iterations of the loop. |
| define void @single_incoming_needs_predication(i64 %a, i64 %b) { |
| ; CHECK-LABEL: @single_incoming_needs_predication( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i64> poison, i64 [[A:%.*]], i32 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i64> [[BROADCAST_SPLATINSERT]], <2 x i64> poison, <2 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_LOAD_CONTINUE4:%.*]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i64> [ <i64 0, i64 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[PRED_LOAD_CONTINUE4]] ] |
| ; CHECK-NEXT: [[VEC_IND1:%.*]] = phi <2 x i16> [ <i16 0, i16 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT2:%.*]], [[PRED_LOAD_CONTINUE4]] ] |
| ; CHECK-NEXT: [[TMP0:%.*]] = add i64 [[INDEX]], 0 |
| ; CHECK-NEXT: [[TMP1:%.*]] = add i64 [[INDEX]], 1 |
| ; CHECK-NEXT: [[TMP2:%.*]] = icmp ugt <2 x i64> [[VEC_IND]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP3:%.*]] = extractelement <2 x i1> [[TMP2]], i32 0 |
| ; CHECK-NEXT: br i1 [[TMP3]], label [[PRED_LOAD_IF:%.*]], label [[PRED_LOAD_CONTINUE:%.*]] |
| ; CHECK: pred.load.if: |
| ; CHECK-NEXT: [[TMP4:%.*]] = extractelement <2 x i16> [[VEC_IND1]], i32 0 |
| ; CHECK-NEXT: [[TMP5:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 [[TMP4]] |
| ; CHECK-NEXT: [[TMP6:%.*]] = load i16, i16* [[TMP5]], align 1 |
| ; CHECK-NEXT: [[TMP7:%.*]] = insertelement <2 x i16> poison, i16 [[TMP6]], i32 0 |
| ; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE]] |
| ; CHECK: pred.load.continue: |
| ; CHECK-NEXT: [[TMP8:%.*]] = phi <2 x i16> [ poison, [[VECTOR_BODY]] ], [ [[TMP7]], [[PRED_LOAD_IF]] ] |
| ; CHECK-NEXT: [[TMP9:%.*]] = extractelement <2 x i1> [[TMP2]], i32 1 |
| ; CHECK-NEXT: br i1 [[TMP9]], label [[PRED_LOAD_IF3:%.*]], label [[PRED_LOAD_CONTINUE4]] |
| ; CHECK: pred.load.if3: |
| ; CHECK-NEXT: [[TMP10:%.*]] = extractelement <2 x i16> [[VEC_IND1]], i32 1 |
| ; CHECK-NEXT: [[TMP11:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 [[TMP10]] |
| ; CHECK-NEXT: [[TMP12:%.*]] = load i16, i16* [[TMP11]], align 1 |
| ; CHECK-NEXT: [[TMP13:%.*]] = insertelement <2 x i16> [[TMP8]], i16 [[TMP12]], i32 1 |
| ; CHECK-NEXT: br label [[PRED_LOAD_CONTINUE4]] |
| ; CHECK: pred.load.continue4: |
| ; CHECK-NEXT: [[TMP14:%.*]] = phi <2 x i16> [ [[TMP8]], [[PRED_LOAD_CONTINUE]] ], [ [[TMP13]], [[PRED_LOAD_IF3]] ] |
| ; CHECK-NEXT: [[TMP15:%.*]] = icmp sgt <2 x i64> [[VEC_IND]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP16:%.*]] = xor <2 x i1> [[TMP2]], <i1 true, i1 true> |
| ; CHECK-NEXT: [[TMP17:%.*]] = xor <2 x i1> [[TMP15]], <i1 true, i1 true> |
| ; CHECK-NEXT: [[TMP18:%.*]] = select <2 x i1> [[TMP2]], <2 x i1> [[TMP17]], <2 x i1> zeroinitializer |
| ; CHECK-NEXT: [[TMP19:%.*]] = select <2 x i1> [[TMP2]], <2 x i1> [[TMP15]], <2 x i1> zeroinitializer |
| ; CHECK-NEXT: [[PREDPHI:%.*]] = select <2 x i1> [[TMP18]], <2 x i16> [[TMP14]], <2 x i16> zeroinitializer |
| ; CHECK-NEXT: [[PREDPHI5:%.*]] = select <2 x i1> [[TMP19]], <2 x i16> <i16 1, i16 1>, <2 x i16> [[PREDPHI]] |
| ; CHECK-NEXT: [[TMP20:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @dst, i16 0, i64 [[TMP0]] |
| ; CHECK-NEXT: [[TMP21:%.*]] = getelementptr inbounds i16, i16* [[TMP20]], i32 0 |
| ; CHECK-NEXT: [[TMP22:%.*]] = bitcast i16* [[TMP21]] to <2 x i16>* |
| ; CHECK-NEXT: store <2 x i16> [[PREDPHI5]], <2 x i16>* [[TMP22]], align 2 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 2 |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i64> [[VEC_IND]], <i64 2, i64 2> |
| ; CHECK-NEXT: [[VEC_IND_NEXT2]] = add <2 x i16> [[VEC_IND1]], <i16 2, i16 2> |
| ; CHECK-NEXT: [[TMP23:%.*]] = icmp eq i64 [[INDEX_NEXT]], 64 |
| ; CHECK-NEXT: br i1 [[TMP23]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP8:!llvm.loop !.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i64 64, 64 |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i64 [ 64, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: br label [[LOOP_HEADER:%.*]] |
| ; CHECK: loop.header: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ] |
| ; CHECK-NEXT: [[IV_TRUNC:%.*]] = trunc i64 [[IV]] to i16 |
| ; CHECK-NEXT: [[CMP_A:%.*]] = icmp ugt i64 [[IV]], [[A]] |
| ; CHECK-NEXT: br i1 [[CMP_A]], label [[LOOP_COND:%.*]], label [[LOOP_LATCH]] |
| ; CHECK: loop.cond: |
| ; CHECK-NEXT: [[BLEND:%.*]] = phi i16 [ [[IV_TRUNC]], [[LOOP_HEADER]] ] |
| ; CHECK-NEXT: [[SRC_PTR:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 [[BLEND]] |
| ; CHECK-NEXT: [[LV:%.*]] = load i16, i16* [[SRC_PTR]], align 1 |
| ; CHECK-NEXT: [[CMP_B:%.*]] = icmp sgt i64 [[IV]], [[A]] |
| ; CHECK-NEXT: br i1 [[CMP_B]], label [[LOOP_NEXT:%.*]], label [[LOOP_LATCH]] |
| ; CHECK: loop.next: |
| ; CHECK-NEXT: br label [[LOOP_LATCH]] |
| ; CHECK: loop.latch: |
| ; CHECK-NEXT: [[RES:%.*]] = phi i16 [ 0, [[LOOP_HEADER]] ], [ [[LV]], [[LOOP_COND]] ], [ 1, [[LOOP_NEXT]] ] |
| ; CHECK-NEXT: [[DST_PTR:%.*]] = getelementptr inbounds [32 x i16], [32 x i16]* @dst, i16 0, i64 [[IV]] |
| ; CHECK-NEXT: store i16 [[RES]], i16* [[DST_PTR]], align 2 |
| ; CHECK-NEXT: [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1 |
| ; CHECK-NEXT: [[CMP439:%.*]] = icmp ult i64 [[IV]], 63 |
| ; CHECK-NEXT: br i1 [[CMP439]], label [[LOOP_HEADER]], label [[EXIT]], [[LOOP9:!llvm.loop !.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop.header |
| |
| loop.header: |
| %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ] |
| %iv.trunc = trunc i64 %iv to i16 |
| %cmp.a = icmp ugt i64 %iv, %a |
| br i1 %cmp.a, label %loop.cond, label %loop.latch |
| |
| loop.cond: |
| %blend = phi i16 [ %iv.trunc, %loop.header ] |
| %src.ptr = getelementptr inbounds [32 x i16], [32 x i16]* @src, i16 0, i16 %blend |
| %lv = load i16, i16* %src.ptr, align 1 |
| %cmp.b = icmp sgt i64 %iv, %a |
| br i1 %cmp.b, label %loop.next, label %loop.latch |
| |
| loop.next: |
| br label %loop.latch |
| |
| loop.latch: |
| %res = phi i16 [ 0, %loop.header ], [ %lv, %loop.cond ], [ 1, %loop.next ] |
| %dst.ptr = getelementptr inbounds [32 x i16], [32 x i16]* @dst, i16 0, i64 %iv |
| store i16 %res, i16* %dst.ptr |
| %iv.next = add nuw nsw i64 %iv, 1 |
| %cmp439 = icmp ult i64 %iv, 63 |
| br i1 %cmp439, label %loop.header, label %exit |
| |
| exit: |
| ret void |
| } |
| |
| ; Test case for PR44800. |
| define void @duplicated_incoming_blocks_blend(i32 %x, i32* %ptr) { |
| ; CHECK-LABEL: @duplicated_incoming_blocks_blend( |
| ; CHECK-NEXT: entry: |
| ; CHECK-NEXT: br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]] |
| ; CHECK: vector.ph: |
| ; CHECK-NEXT: [[BROADCAST_SPLATINSERT:%.*]] = insertelement <2 x i32> poison, i32 [[X:%.*]], i32 0 |
| ; CHECK-NEXT: [[BROADCAST_SPLAT:%.*]] = shufflevector <2 x i32> [[BROADCAST_SPLATINSERT]], <2 x i32> poison, <2 x i32> zeroinitializer |
| ; CHECK-NEXT: br label [[VECTOR_BODY:%.*]] |
| ; CHECK: vector.body: |
| ; CHECK-NEXT: [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[VEC_IND:%.*]] = phi <2 x i32> [ <i32 0, i32 1>, [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ] |
| ; CHECK-NEXT: [[TMP0:%.*]] = icmp ugt <2 x i32> [[VEC_IND]], [[BROADCAST_SPLAT]] |
| ; CHECK-NEXT: [[TMP1:%.*]] = extractelement <2 x i32> [[VEC_IND]], i32 0 |
| ; CHECK-NEXT: [[TMP2:%.*]] = getelementptr i32, i32* [[PTR:%.*]], i32 [[TMP1]] |
| ; CHECK-NEXT: [[TMP3:%.*]] = getelementptr i32, i32* [[TMP2]], i32 0 |
| ; CHECK-NEXT: [[TMP4:%.*]] = bitcast i32* [[TMP3]] to <2 x i32>* |
| ; CHECK-NEXT: store <2 x i32> [[VEC_IND]], <2 x i32>* [[TMP4]], align 4 |
| ; CHECK-NEXT: [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 2 |
| ; CHECK-NEXT: [[VEC_IND_NEXT]] = add <2 x i32> [[VEC_IND]], <i32 2, i32 2> |
| ; CHECK-NEXT: [[TMP5:%.*]] = icmp eq i32 [[INDEX_NEXT]], 1000 |
| ; CHECK-NEXT: br i1 [[TMP5]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP10:!llvm.loop !.*]] |
| ; CHECK: middle.block: |
| ; CHECK-NEXT: [[CMP_N:%.*]] = icmp eq i32 1000, 1000 |
| ; CHECK-NEXT: br i1 [[CMP_N]], label [[EXIT:%.*]], label [[SCALAR_PH]] |
| ; CHECK: scalar.ph: |
| ; CHECK-NEXT: [[BC_RESUME_VAL:%.*]] = phi i32 [ 1000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ] |
| ; CHECK-NEXT: br label [[LOOP_HEADER:%.*]] |
| ; CHECK: loop.header: |
| ; CHECK-NEXT: [[IV:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[ADD_I:%.*]], [[LOOP_LATCH:%.*]] ] |
| ; CHECK-NEXT: [[C_0:%.*]] = icmp ugt i32 [[IV]], [[X]] |
| ; CHECK-NEXT: br i1 [[C_0]], label [[LOOP_LATCH]], label [[LOOP_LATCH]] |
| ; CHECK: loop.latch: |
| ; CHECK-NEXT: [[P:%.*]] = phi i32 [ [[IV]], [[LOOP_HEADER]] ], [ [[IV]], [[LOOP_HEADER]] ] |
| ; CHECK-NEXT: [[GEP_PTR:%.*]] = getelementptr i32, i32* [[PTR]], i32 [[P]] |
| ; CHECK-NEXT: store i32 [[P]], i32* [[GEP_PTR]], align 4 |
| ; CHECK-NEXT: [[ADD_I]] = add nsw i32 [[P]], 1 |
| ; CHECK-NEXT: [[CMP:%.*]] = icmp slt i32 [[ADD_I]], 1000 |
| ; CHECK-NEXT: br i1 [[CMP]], label [[LOOP_HEADER]], label [[EXIT]], [[LOOP11:!llvm.loop !.*]] |
| ; CHECK: exit: |
| ; CHECK-NEXT: ret void |
| ; |
| entry: |
| br label %loop.header |
| |
| loop.header: |
| %iv = phi i32 [ 0 , %entry ], [ %add.i, %loop.latch ] |
| %c.0 = icmp ugt i32 %iv, %x |
| br i1 %c.0, label %loop.latch, label %loop.latch |
| |
| loop.latch: |
| %p = phi i32 [ %iv, %loop.header ], [ %iv, %loop.header ] |
| %gep.ptr = getelementptr i32, i32* %ptr, i32 %p |
| store i32 %p, i32* %gep.ptr |
| %add.i = add nsw i32 %p, 1 |
| %cmp = icmp slt i32 %add.i, 1000 |
| br i1 %cmp, label %loop.header, label %exit |
| |
| exit: |
| ret void |
| } |