1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -loop-vectorize -instcombine -simplifycfg -simplifycfg-require-and-preserve-domtree=1 < %s -S -o - | FileCheck %s
3
4target datalayout = "e-m:e-p:32:32-Fi8-i64:64-v128:64:128-a:0:32-n32-S64"
5target triple = "thumbv8.1m.main-arm-none-eabi"
6
7define void @arm_abs_q7(i8* nocapture readonly %pSrc, i8* nocapture %pDst, i32 %blockSize) #0 {
8; CHECK-LABEL: @arm_abs_q7(
9; CHECK-NEXT:  entry:
10; CHECK-NEXT:    [[PSRC2:%.*]] = ptrtoint i8* [[PSRC:%.*]] to i32
11; CHECK-NEXT:    [[PDST1:%.*]] = ptrtoint i8* [[PDST:%.*]] to i32
12; CHECK-NEXT:    [[CMP_NOT19:%.*]] = icmp eq i32 [[BLOCKSIZE:%.*]], 0
13; CHECK-NEXT:    br i1 [[CMP_NOT19]], label [[WHILE_END:%.*]], label [[WHILE_BODY_PREHEADER:%.*]]
14; CHECK:       while.body.preheader:
15; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[BLOCKSIZE]], 16
16; CHECK-NEXT:    [[TMP0:%.*]] = sub i32 [[PDST1]], [[PSRC2]]
17; CHECK-NEXT:    [[DIFF_CHECK:%.*]] = icmp ult i32 [[TMP0]], 16
18; CHECK-NEXT:    [[OR_COND:%.*]] = select i1 [[MIN_ITERS_CHECK]], i1 true, i1 [[DIFF_CHECK]]
19; CHECK-NEXT:    br i1 [[OR_COND]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
20; CHECK:       vector.ph:
21; CHECK-NEXT:    [[N_VEC:%.*]] = and i32 [[BLOCKSIZE]], -16
22; CHECK-NEXT:    [[IND_END:%.*]] = getelementptr i8, i8* [[PSRC]], i32 [[N_VEC]]
23; CHECK-NEXT:    [[IND_END3:%.*]] = and i32 [[BLOCKSIZE]], 15
24; CHECK-NEXT:    [[IND_END5:%.*]] = getelementptr i8, i8* [[PDST]], i32 [[N_VEC]]
25; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
26; CHECK:       vector.body:
27; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
28; CHECK-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i8, i8* [[PSRC]], i32 [[INDEX]]
29; CHECK-NEXT:    [[NEXT_GEP6:%.*]] = getelementptr i8, i8* [[PDST]], i32 [[INDEX]]
30; CHECK-NEXT:    [[TMP0:%.*]] = bitcast i8* [[NEXT_GEP]] to <16 x i8>*
31; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <16 x i8>, <16 x i8>* [[TMP0]], align 1
32; CHECK-NEXT:    [[TMP1:%.*]] = icmp sgt <16 x i8> [[WIDE_LOAD]], zeroinitializer
33; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq <16 x i8> [[WIDE_LOAD]], <i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128, i8 -128>
34; CHECK-NEXT:    [[TMP3:%.*]] = sub <16 x i8> zeroinitializer, [[WIDE_LOAD]]
35; CHECK-NEXT:    [[TMP4:%.*]] = select <16 x i1> [[TMP2]], <16 x i8> <i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127, i8 127>, <16 x i8> [[TMP3]]
36; CHECK-NEXT:    [[TMP5:%.*]] = select <16 x i1> [[TMP1]], <16 x i8> [[WIDE_LOAD]], <16 x i8> [[TMP4]]
37; CHECK-NEXT:    [[TMP6:%.*]] = bitcast i8* [[NEXT_GEP6]] to <16 x i8>*
38; CHECK-NEXT:    store <16 x i8> [[TMP5]], <16 x i8>* [[TMP6]], align 1
39; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 16
40; CHECK-NEXT:    [[TMP7:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
41; CHECK-NEXT:    br i1 [[TMP7]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP5:!llvm.loop !.*]]
42; CHECK:       middle.block:
43; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i32 [[N_VEC]], [[BLOCKSIZE]]
44; CHECK-NEXT:    br i1 [[CMP_N]], label [[WHILE_END]], label [[SCALAR_PH]]
45; CHECK:       scalar.ph:
46; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i8* [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[PSRC]], [[WHILE_BODY_PREHEADER]] ]
47; CHECK-NEXT:    [[BC_RESUME_VAL2:%.*]] = phi i32 [ [[IND_END3]], [[MIDDLE_BLOCK]] ], [ [[BLOCKSIZE]], [[WHILE_BODY_PREHEADER]] ]
48; CHECK-NEXT:    [[BC_RESUME_VAL4:%.*]] = phi i8* [ [[IND_END5]], [[MIDDLE_BLOCK]] ], [ [[PDST]], [[WHILE_BODY_PREHEADER]] ]
49; CHECK-NEXT:    br label [[WHILE_BODY:%.*]]
50; CHECK:       while.body:
51; CHECK-NEXT:    [[PSRC_ADDR_022:%.*]] = phi i8* [ [[INCDEC_PTR:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
52; CHECK-NEXT:    [[BLKCNT_021:%.*]] = phi i32 [ [[DEC:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL2]], [[SCALAR_PH]] ]
53; CHECK-NEXT:    [[PDST_ADDR_020:%.*]] = phi i8* [ [[INCDEC_PTR13:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL4]], [[SCALAR_PH]] ]
54; CHECK-NEXT:    [[INCDEC_PTR]] = getelementptr inbounds i8, i8* [[PSRC_ADDR_022]], i32 1
55; CHECK-NEXT:    [[TMP8:%.*]] = load i8, i8* [[PSRC_ADDR_022]], align 1
56; CHECK-NEXT:    [[CMP1:%.*]] = icmp sgt i8 [[TMP8]], 0
57; CHECK-NEXT:    [[CMP5:%.*]] = icmp eq i8 [[TMP8]], -128
58; CHECK-NEXT:    [[SUB:%.*]] = sub i8 0, [[TMP8]]
59; CHECK-NEXT:    [[COND:%.*]] = select i1 [[CMP5]], i8 127, i8 [[SUB]]
60; CHECK-NEXT:    [[COND11:%.*]] = select i1 [[CMP1]], i8 [[TMP8]], i8 [[COND]]
61; CHECK-NEXT:    [[INCDEC_PTR13]] = getelementptr inbounds i8, i8* [[PDST_ADDR_020]], i32 1
62; CHECK-NEXT:    store i8 [[COND11]], i8* [[PDST_ADDR_020]], align 1
63; CHECK-NEXT:    [[DEC]] = add i32 [[BLKCNT_021]], -1
64; CHECK-NEXT:    [[CMP_NOT:%.*]] = icmp eq i32 [[DEC]], 0
65; CHECK-NEXT:    br i1 [[CMP_NOT]], label [[WHILE_END]], label [[WHILE_BODY]], [[LOOP7:!llvm.loop !.*]]
66; CHECK:       while.end:
67; CHECK-NEXT:    ret void
68;
69entry:
70  %cmp.not19 = icmp eq i32 %blockSize, 0
71  br i1 %cmp.not19, label %while.end, label %while.body.preheader
72
73while.body.preheader:                             ; preds = %entry
74  br label %while.body
75
76while.body:                                       ; preds = %while.body.preheader, %while.body
77  %pSrc.addr.022 = phi i8* [ %incdec.ptr, %while.body ], [ %pSrc, %while.body.preheader ]
78  %blkCnt.021 = phi i32 [ %dec, %while.body ], [ %blockSize, %while.body.preheader ]
79  %pDst.addr.020 = phi i8* [ %incdec.ptr13, %while.body ], [ %pDst, %while.body.preheader ]
80  %incdec.ptr = getelementptr inbounds i8, i8* %pSrc.addr.022, i32 1
81  %0 = load i8, i8* %pSrc.addr.022, align 1
82  %cmp1 = icmp sgt i8 %0, 0
83  %cmp5 = icmp eq i8 %0, -128
84  %sub = sub i8 0, %0
85  %cond = select i1 %cmp5, i8 127, i8 %sub
86  %cond11 = select i1 %cmp1, i8 %0, i8 %cond
87  %incdec.ptr13 = getelementptr inbounds i8, i8* %pDst.addr.020, i32 1
88  store i8 %cond11, i8* %pDst.addr.020, align 1
89  %dec = add i32 %blkCnt.021, -1
90  %cmp.not = icmp eq i32 %dec, 0
91  br i1 %cmp.not, label %while.end.loopexit, label %while.body
92
93while.end.loopexit:                               ; preds = %while.body
94  br label %while.end
95
96while.end:                                        ; preds = %while.end.loopexit, %entry
97  ret void
98}
99
100define void @arm_abs_q15(i16* nocapture readonly %pSrc, i16* nocapture %pDst, i32 %blockSize) #0 {
101; CHECK-LABEL: @arm_abs_q15(
102; CHECK-NEXT:  entry:
103; CHECK-NEXT:    [[PSRC2:%.*]] = ptrtoint i16* [[PSRC:%.*]] to i32
104; CHECK-NEXT:    [[PDST1:%.*]] = ptrtoint i16* [[PDST:%.*]] to i32
105; CHECK-NEXT:    [[CMP_NOT20:%.*]] = icmp eq i32 [[BLOCKSIZE:%.*]], 0
106; CHECK-NEXT:    br i1 [[CMP_NOT20]], label [[WHILE_END:%.*]], label [[WHILE_BODY_PREHEADER:%.*]]
107; CHECK:       while.body.preheader:
108; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[BLOCKSIZE]], 8
109; CHECK-NEXT:    [[TMP0:%.*]] = sub i32 [[PDST1]], [[PSRC2]]
110; CHECK-NEXT:    [[DIFF_CHECK:%.*]] = icmp ult i32 [[TMP0]], 16
111; CHECK-NEXT:    [[OR_COND:%.*]] = select i1 [[MIN_ITERS_CHECK]], i1 true, i1 [[DIFF_CHECK]]
112; CHECK-NEXT:    br i1 [[OR_COND]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
113; CHECK:       vector.ph:
114; CHECK-NEXT:    [[N_VEC:%.*]] = and i32 [[BLOCKSIZE]], -8
115; CHECK-NEXT:    [[IND_END:%.*]] = getelementptr i16, i16* [[PSRC]], i32 [[N_VEC]]
116; CHECK-NEXT:    [[IND_END7:%.*]] = and i32 [[BLOCKSIZE]], 7
117; CHECK-NEXT:    [[IND_END9:%.*]] = getelementptr i16, i16* [[PDST]], i32 [[N_VEC]]
118; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
119; CHECK:       vector.body:
120; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
121; CHECK-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i16, i16* [[PSRC]], i32 [[INDEX]]
122; CHECK-NEXT:    [[NEXT_GEP10:%.*]] = getelementptr i16, i16* [[PDST]], i32 [[INDEX]]
123; CHECK-NEXT:    [[TMP0:%.*]] = bitcast i16* [[NEXT_GEP]] to <8 x i16>*
124; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <8 x i16>, <8 x i16>* [[TMP0]], align 2
125; CHECK-NEXT:    [[TMP1:%.*]] = icmp sgt <8 x i16> [[WIDE_LOAD]], zeroinitializer
126; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq <8 x i16> [[WIDE_LOAD]], <i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768, i16 -32768>
127; CHECK-NEXT:    [[TMP3:%.*]] = sub <8 x i16> zeroinitializer, [[WIDE_LOAD]]
128; CHECK-NEXT:    [[TMP4:%.*]] = select <8 x i1> [[TMP2]], <8 x i16> <i16 32767, i16 32767, i16 32767, i16 32767, i16 32767, i16 32767, i16 32767, i16 32767>, <8 x i16> [[TMP3]]
129; CHECK-NEXT:    [[TMP5:%.*]] = select <8 x i1> [[TMP1]], <8 x i16> [[WIDE_LOAD]], <8 x i16> [[TMP4]]
130; CHECK-NEXT:    [[TMP6:%.*]] = bitcast i16* [[NEXT_GEP10]] to <8 x i16>*
131; CHECK-NEXT:    store <8 x i16> [[TMP5]], <8 x i16>* [[TMP6]], align 2
132; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 8
133; CHECK-NEXT:    [[TMP7:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
134; CHECK-NEXT:    br i1 [[TMP7]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP13:!llvm.loop !.*]]
135; CHECK:       middle.block:
136; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i32 [[N_VEC]], [[BLOCKSIZE]]
137; CHECK-NEXT:    br i1 [[CMP_N]], label [[WHILE_END]], label [[SCALAR_PH]]
138; CHECK:       scalar.ph:
139; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i16* [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[PSRC]], [[WHILE_BODY_PREHEADER]] ]
140; CHECK-NEXT:    [[BC_RESUME_VAL6:%.*]] = phi i32 [ [[IND_END7]], [[MIDDLE_BLOCK]] ], [ [[BLOCKSIZE]], [[WHILE_BODY_PREHEADER]] ]
141; CHECK-NEXT:    [[BC_RESUME_VAL8:%.*]] = phi i16* [ [[IND_END9]], [[MIDDLE_BLOCK]] ], [ [[PDST]], [[WHILE_BODY_PREHEADER]] ]
142; CHECK-NEXT:    br label [[WHILE_BODY:%.*]]
143; CHECK:       while.body:
144; CHECK-NEXT:    [[PSRC_ADDR_023:%.*]] = phi i16* [ [[INCDEC_PTR:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
145; CHECK-NEXT:    [[BLKCNT_022:%.*]] = phi i32 [ [[DEC:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL6]], [[SCALAR_PH]] ]
146; CHECK-NEXT:    [[PDST_ADDR_021:%.*]] = phi i16* [ [[INCDEC_PTR13:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL8]], [[SCALAR_PH]] ]
147; CHECK-NEXT:    [[INCDEC_PTR]] = getelementptr inbounds i16, i16* [[PSRC_ADDR_023]], i32 1
148; CHECK-NEXT:    [[TMP8:%.*]] = load i16, i16* [[PSRC_ADDR_023]], align 2
149; CHECK-NEXT:    [[CMP1:%.*]] = icmp sgt i16 [[TMP8]], 0
150; CHECK-NEXT:    [[CMP5:%.*]] = icmp eq i16 [[TMP8]], -32768
151; CHECK-NEXT:    [[SUB:%.*]] = sub i16 0, [[TMP8]]
152; CHECK-NEXT:    [[COND:%.*]] = select i1 [[CMP5]], i16 32767, i16 [[SUB]]
153; CHECK-NEXT:    [[COND11:%.*]] = select i1 [[CMP1]], i16 [[TMP8]], i16 [[COND]]
154; CHECK-NEXT:    [[INCDEC_PTR13]] = getelementptr inbounds i16, i16* [[PDST_ADDR_021]], i32 1
155; CHECK-NEXT:    store i16 [[COND11]], i16* [[PDST_ADDR_021]], align 2
156; CHECK-NEXT:    [[DEC]] = add i32 [[BLKCNT_022]], -1
157; CHECK-NEXT:    [[CMP_NOT:%.*]] = icmp eq i32 [[DEC]], 0
158; CHECK-NEXT:    br i1 [[CMP_NOT]], label [[WHILE_END]], label [[WHILE_BODY]], [[LOOP14:!llvm.loop !.*]]
159; CHECK:       while.end:
160; CHECK-NEXT:    ret void
161;
162entry:
163  %cmp.not20 = icmp eq i32 %blockSize, 0
164  br i1 %cmp.not20, label %while.end, label %while.body.preheader
165
166while.body.preheader:                             ; preds = %entry
167  br label %while.body
168
169while.body:                                       ; preds = %while.body.preheader, %while.body
170  %pSrc.addr.023 = phi i16* [ %incdec.ptr, %while.body ], [ %pSrc, %while.body.preheader ]
171  %blkCnt.022 = phi i32 [ %dec, %while.body ], [ %blockSize, %while.body.preheader ]
172  %pDst.addr.021 = phi i16* [ %incdec.ptr13, %while.body ], [ %pDst, %while.body.preheader ]
173  %incdec.ptr = getelementptr inbounds i16, i16* %pSrc.addr.023, i32 1
174  %0 = load i16, i16* %pSrc.addr.023, align 2
175  %cmp1 = icmp sgt i16 %0, 0
176  %cmp5 = icmp eq i16 %0, -32768
177  %sub = sub i16 0, %0
178  %cond = select i1 %cmp5, i16 32767, i16 %sub
179  %cond11 = select i1 %cmp1, i16 %0, i16 %cond
180  %incdec.ptr13 = getelementptr inbounds i16, i16* %pDst.addr.021, i32 1
181  store i16 %cond11, i16* %pDst.addr.021, align 2
182  %dec = add i32 %blkCnt.022, -1
183  %cmp.not = icmp eq i32 %dec, 0
184  br i1 %cmp.not, label %while.end.loopexit, label %while.body
185
186while.end.loopexit:                               ; preds = %while.body
187  br label %while.end
188
189while.end:                                        ; preds = %while.end.loopexit, %entry
190  ret void
191}
192
193define void @arm_abs_q31(i32* nocapture readonly %pSrc, i32* nocapture %pDst, i32 %blockSize) #0 {
194; CHECK-LABEL: @arm_abs_q31(
195; CHECK-NEXT:  entry:
196; CHECK-NEXT:    [[PSRC2:%.*]] = ptrtoint i32* [[PSRC:%.*]] to i32
197; CHECK-NEXT:    [[PDST1:%.*]] = ptrtoint i32* [[PDST:%.*]] to i32
198; CHECK-NEXT:    [[CMP_NOT14:%.*]] = icmp eq i32 [[BLOCKSIZE:%.*]], 0
199; CHECK-NEXT:    br i1 [[CMP_NOT14]], label [[WHILE_END:%.*]], label [[WHILE_BODY_PREHEADER:%.*]]
200; CHECK:       while.body.preheader:
201; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i32 [[BLOCKSIZE]], 4
202; CHECK-NEXT:    [[TMP0:%.*]] = sub i32 [[PDST1]], [[PSRC2]]
203; CHECK-NEXT:    [[DIFF_CHECK:%.*]] = icmp ult i32 [[TMP0]], 16
204; CHECK-NEXT:    [[OR_COND:%.*]] = select i1 [[MIN_ITERS_CHECK]], i1 true, i1 [[DIFF_CHECK]]
205; CHECK-NEXT:    br i1 [[OR_COND]], label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
206; CHECK:       vector.ph:
207; CHECK-NEXT:    [[N_VEC:%.*]] = and i32 [[BLOCKSIZE]], -4
208; CHECK-NEXT:    [[IND_END:%.*]] = getelementptr i32, i32* [[PSRC]], i32 [[N_VEC]]
209; CHECK-NEXT:    [[IND_END7:%.*]] = and i32 [[BLOCKSIZE]], 3
210; CHECK-NEXT:    [[IND_END9:%.*]] = getelementptr i32, i32* [[PDST]], i32 [[N_VEC]]
211; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
212; CHECK:       vector.body:
213; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
214; CHECK-NEXT:    [[NEXT_GEP:%.*]] = getelementptr i32, i32* [[PSRC]], i32 [[INDEX]]
215; CHECK-NEXT:    [[NEXT_GEP10:%.*]] = getelementptr i32, i32* [[PDST]], i32 [[INDEX]]
216; CHECK-NEXT:    [[TMP0:%.*]] = bitcast i32* [[NEXT_GEP]] to <4 x i32>*
217; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, <4 x i32>* [[TMP0]], align 4
218; CHECK-NEXT:    [[TMP1:%.*]] = icmp sgt <4 x i32> [[WIDE_LOAD]], zeroinitializer
219; CHECK-NEXT:    [[TMP2:%.*]] = icmp eq <4 x i32> [[WIDE_LOAD]], <i32 -2147483648, i32 -2147483648, i32 -2147483648, i32 -2147483648>
220; CHECK-NEXT:    [[TMP3:%.*]] = sub nsw <4 x i32> zeroinitializer, [[WIDE_LOAD]]
221; CHECK-NEXT:    [[TMP4:%.*]] = select <4 x i1> [[TMP2]], <4 x i32> <i32 2147483647, i32 2147483647, i32 2147483647, i32 2147483647>, <4 x i32> [[TMP3]]
222; CHECK-NEXT:    [[TMP5:%.*]] = select <4 x i1> [[TMP1]], <4 x i32> [[WIDE_LOAD]], <4 x i32> [[TMP4]]
223; CHECK-NEXT:    [[TMP6:%.*]] = bitcast i32* [[NEXT_GEP10]] to <4 x i32>*
224; CHECK-NEXT:    store <4 x i32> [[TMP5]], <4 x i32>* [[TMP6]], align 4
225; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i32 [[INDEX]], 4
226; CHECK-NEXT:    [[TMP7:%.*]] = icmp eq i32 [[INDEX_NEXT]], [[N_VEC]]
227; CHECK-NEXT:    br i1 [[TMP7]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], [[LOOP20:!llvm.loop !.*]]
228; CHECK:       middle.block:
229; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i32 [[N_VEC]], [[BLOCKSIZE]]
230; CHECK-NEXT:    br i1 [[CMP_N]], label [[WHILE_END]], label [[SCALAR_PH]]
231; CHECK:       scalar.ph:
232; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i32* [ [[IND_END]], [[MIDDLE_BLOCK]] ], [ [[PSRC]], [[WHILE_BODY_PREHEADER]] ]
233; CHECK-NEXT:    [[BC_RESUME_VAL6:%.*]] = phi i32 [ [[IND_END7]], [[MIDDLE_BLOCK]] ], [ [[BLOCKSIZE]], [[WHILE_BODY_PREHEADER]] ]
234; CHECK-NEXT:    [[BC_RESUME_VAL8:%.*]] = phi i32* [ [[IND_END9]], [[MIDDLE_BLOCK]] ], [ [[PDST]], [[WHILE_BODY_PREHEADER]] ]
235; CHECK-NEXT:    br label [[WHILE_BODY:%.*]]
236; CHECK:       while.body:
237; CHECK-NEXT:    [[PSRC_ADDR_017:%.*]] = phi i32* [ [[INCDEC_PTR:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ]
238; CHECK-NEXT:    [[BLKCNT_016:%.*]] = phi i32 [ [[DEC:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL6]], [[SCALAR_PH]] ]
239; CHECK-NEXT:    [[PDST_ADDR_015:%.*]] = phi i32* [ [[INCDEC_PTR7:%.*]], [[WHILE_BODY]] ], [ [[BC_RESUME_VAL8]], [[SCALAR_PH]] ]
240; CHECK-NEXT:    [[INCDEC_PTR]] = getelementptr inbounds i32, i32* [[PSRC_ADDR_017]], i32 1
241; CHECK-NEXT:    [[TMP8:%.*]] = load i32, i32* [[PSRC_ADDR_017]], align 4
242; CHECK-NEXT:    [[CMP1:%.*]] = icmp sgt i32 [[TMP8]], 0
243; CHECK-NEXT:    [[CMP2:%.*]] = icmp eq i32 [[TMP8]], -2147483648
244; CHECK-NEXT:    [[SUB:%.*]] = sub nsw i32 0, [[TMP8]]
245; CHECK-NEXT:    [[COND:%.*]] = select i1 [[CMP2]], i32 2147483647, i32 [[SUB]]
246; CHECK-NEXT:    [[COND6:%.*]] = select i1 [[CMP1]], i32 [[TMP8]], i32 [[COND]]
247; CHECK-NEXT:    [[INCDEC_PTR7]] = getelementptr inbounds i32, i32* [[PDST_ADDR_015]], i32 1
248; CHECK-NEXT:    store i32 [[COND6]], i32* [[PDST_ADDR_015]], align 4
249; CHECK-NEXT:    [[DEC]] = add i32 [[BLKCNT_016]], -1
250; CHECK-NEXT:    [[CMP_NOT:%.*]] = icmp eq i32 [[DEC]], 0
251; CHECK-NEXT:    br i1 [[CMP_NOT]], label [[WHILE_END]], label [[WHILE_BODY]], [[LOOP21:!llvm.loop !.*]]
252; CHECK:       while.end:
253; CHECK-NEXT:    ret void
254;
255entry:
256  %cmp.not14 = icmp eq i32 %blockSize, 0
257  br i1 %cmp.not14, label %while.end, label %while.body.preheader
258
259while.body.preheader:                             ; preds = %entry
260  br label %while.body
261
262while.body:                                       ; preds = %while.body.preheader, %while.body
263  %pSrc.addr.017 = phi i32* [ %incdec.ptr, %while.body ], [ %pSrc, %while.body.preheader ]
264  %blkCnt.016 = phi i32 [ %dec, %while.body ], [ %blockSize, %while.body.preheader ]
265  %pDst.addr.015 = phi i32* [ %incdec.ptr7, %while.body ], [ %pDst, %while.body.preheader ]
266  %incdec.ptr = getelementptr inbounds i32, i32* %pSrc.addr.017, i32 1
267  %0 = load i32, i32* %pSrc.addr.017, align 4
268  %cmp1 = icmp sgt i32 %0, 0
269  %cmp2 = icmp eq i32 %0, -2147483648
270  %sub = sub nsw i32 0, %0
271  %cond = select i1 %cmp2, i32 2147483647, i32 %sub
272  %cond6 = select i1 %cmp1, i32 %0, i32 %cond
273  %incdec.ptr7 = getelementptr inbounds i32, i32* %pDst.addr.015, i32 1
274  store i32 %cond6, i32* %pDst.addr.015, align 4
275  %dec = add i32 %blkCnt.016, -1
276  %cmp.not = icmp eq i32 %dec, 0
277  br i1 %cmp.not, label %while.end.loopexit, label %while.body
278
279while.end.loopexit:                               ; preds = %while.body
280  br label %while.end
281
282while.end:                                        ; preds = %while.end.loopexit, %entry
283  ret void
284}
285
286attributes #0 = { "target-features"="+mve" }
287