xref: /llvm-project/llvm/test/Transforms/LoopVectorize/X86/epilog-vectorization-inductions.ll (revision 7f3428d3ed71d87a2088b77b6cab9f3d86544234) 
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; RUN: opt -passes=loop-vectorize -mcpu=znver2 -S %s | FileCheck %s
3
4target triple = "x86_64-unknown-linux-gnu"
5
6define void @test_pr59459(i64 %iv.start, ptr %arr) {
7; CHECK-LABEL: @test_pr59459(
8; CHECK-NEXT:  iter.check:
9; CHECK-NEXT:    [[TMP0:%.*]] = trunc i64 [[IV_START:%.*]] to i32
10; CHECK-NEXT:    [[SMAX1:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP0]], i32 92)
11; CHECK-NEXT:    [[TMP1:%.*]] = sub i32 [[SMAX1]], [[TMP0]]
12; CHECK-NEXT:    [[TMP2:%.*]] = zext i32 [[TMP1]] to i64
13; CHECK-NEXT:    [[TMP3:%.*]] = add nuw nsw i64 [[TMP2]], 1
14; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[TMP3]], 4
15; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_SCEVCHECK:%.*]]
16; CHECK:       vector.scevcheck:
17; CHECK-NEXT:    [[TMP4:%.*]] = trunc i64 [[IV_START]] to i32
18; CHECK-NEXT:    [[SMAX:%.*]] = call i32 @llvm.smax.i32(i32 [[TMP4]], i32 92)
19; CHECK-NEXT:    [[TMP5:%.*]] = sub i32 [[SMAX]], [[TMP4]]
20; CHECK-NEXT:    [[TMP6:%.*]] = add i32 [[TMP4]], -1
21; CHECK-NEXT:    [[TMP7:%.*]] = add i32 [[TMP6]], [[TMP5]]
22; CHECK-NEXT:    [[TMP8:%.*]] = icmp ult i32 [[TMP7]], [[TMP6]]
23; CHECK-NEXT:    br i1 [[TMP8]], label [[VEC_EPILOG_SCALAR_PH]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
24; CHECK:       vector.main.loop.iter.check:
25; CHECK-NEXT:    [[MIN_ITERS_CHECK2:%.*]] = icmp ult i64 [[TMP3]], 16
26; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK2]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
27; CHECK:       vector.ph:
28; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[TMP3]], 16
29; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[TMP3]], [[N_MOD_VF]]
30; CHECK-NEXT:    [[IND_END:%.*]] = add i64 [[IV_START]], [[N_VEC]]
31; CHECK-NEXT:    [[TMP9:%.*]] = trunc i64 [[IV_START]] to i32
32; CHECK-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <16 x i32> poison, i32 [[TMP9]], i64 0
33; CHECK-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <16 x i32> [[DOTSPLATINSERT]], <16 x i32> poison, <16 x i32> zeroinitializer
34; CHECK-NEXT:    [[INDUCTION:%.*]] = add <16 x i32> [[DOTSPLAT]], <i32 0, i32 1, i32 2, i32 3, i32 4, i32 5, i32 6, i32 7, i32 8, i32 9, i32 10, i32 11, i32 12, i32 13, i32 14, i32 15>
35; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
36; CHECK:       vector.body:
37; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
38; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <16 x i32> [ [[INDUCTION]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
39; CHECK-NEXT:    [[OFFSET_IDX:%.*]] = add i64 [[IV_START]], [[INDEX]]
40; CHECK-NEXT:    [[TMP10:%.*]] = trunc i64 [[OFFSET_IDX]] to i32
41; CHECK-NEXT:    [[TMP11:%.*]] = add i32 [[TMP10]], 0
42; CHECK-NEXT:    [[TMP12:%.*]] = add i32 [[TMP11]], -1
43; CHECK-NEXT:    [[TMP13:%.*]] = mul <16 x i32> [[VEC_IND]], splat (i32 196608)
44; CHECK-NEXT:    [[TMP14:%.*]] = lshr exact <16 x i32> [[TMP13]], splat (i32 16)
45; CHECK-NEXT:    [[TMP15:%.*]] = trunc <16 x i32> [[TMP14]] to <16 x i16>
46; CHECK-NEXT:    [[TMP16:%.*]] = zext i32 [[TMP12]] to i64
47; CHECK-NEXT:    [[TMP17:%.*]] = getelementptr i16, ptr [[ARR:%.*]], i64 [[TMP16]]
48; CHECK-NEXT:    [[TMP18:%.*]] = getelementptr i16, ptr [[TMP17]], i32 0
49; CHECK-NEXT:    store <16 x i16> [[TMP15]], ptr [[TMP18]], align 2
50; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 16
51; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <16 x i32> [[VEC_IND]], splat (i32 16)
52; CHECK-NEXT:    [[TMP19:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
53; CHECK-NEXT:    br i1 [[TMP19]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
54; CHECK:       middle.block:
55; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[TMP3]], [[N_VEC]]
56; CHECK-NEXT:    br i1 [[CMP_N]], label [[EXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
57; CHECK:       vec.epilog.iter.check:
58; CHECK-NEXT:    [[IND_END6:%.*]] = add i64 [[IV_START]], [[N_VEC]]
59; CHECK-NEXT:    [[N_VEC_REMAINING:%.*]] = sub i64 [[TMP3]], [[N_VEC]]
60; CHECK-NEXT:    [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 4
61; CHECK-NEXT:    br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
62; CHECK:       vec.epilog.ph:
63; CHECK-NEXT:    [[VEC_EPILOG_RESUME_VAL:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
64; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ [[IND_END]], [[VEC_EPILOG_ITER_CHECK]] ], [ [[IV_START]], [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
65; CHECK-NEXT:    [[N_MOD_VF3:%.*]] = urem i64 [[TMP3]], 4
66; CHECK-NEXT:    [[N_VEC4:%.*]] = sub i64 [[TMP3]], [[N_MOD_VF3]]
67; CHECK-NEXT:    [[IND_END5:%.*]] = add i64 [[IV_START]], [[N_VEC4]]
68; CHECK-NEXT:    [[TMP20:%.*]] = trunc i64 [[BC_RESUME_VAL]] to i32
69; CHECK-NEXT:    [[DOTSPLATINSERT9:%.*]] = insertelement <4 x i32> poison, i32 [[TMP20]], i64 0
70; CHECK-NEXT:    [[DOTSPLAT10:%.*]] = shufflevector <4 x i32> [[DOTSPLATINSERT9]], <4 x i32> poison, <4 x i32> zeroinitializer
71; CHECK-NEXT:    [[INDUCTION11:%.*]] = add <4 x i32> [[DOTSPLAT10]], <i32 0, i32 1, i32 2, i32 3>
72; CHECK-NEXT:    br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
73; CHECK:       vec.epilog.vector.body:
74; CHECK-NEXT:    [[INDEX8:%.*]] = phi i64 [ [[VEC_EPILOG_RESUME_VAL]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT15:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
75; CHECK-NEXT:    [[VEC_IND12:%.*]] = phi <4 x i32> [ [[INDUCTION11]], [[VEC_EPILOG_PH]] ], [ [[VEC_IND_NEXT13:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
76; CHECK-NEXT:    [[OFFSET_IDX14:%.*]] = add i64 [[IV_START]], [[INDEX8]]
77; CHECK-NEXT:    [[TMP21:%.*]] = trunc i64 [[OFFSET_IDX14]] to i32
78; CHECK-NEXT:    [[TMP22:%.*]] = add i32 [[TMP21]], 0
79; CHECK-NEXT:    [[TMP23:%.*]] = add i32 [[TMP22]], -1
80; CHECK-NEXT:    [[TMP24:%.*]] = mul <4 x i32> [[VEC_IND12]], splat (i32 196608)
81; CHECK-NEXT:    [[TMP25:%.*]] = lshr exact <4 x i32> [[TMP24]], splat (i32 16)
82; CHECK-NEXT:    [[TMP26:%.*]] = trunc <4 x i32> [[TMP25]] to <4 x i16>
83; CHECK-NEXT:    [[TMP27:%.*]] = zext i32 [[TMP23]] to i64
84; CHECK-NEXT:    [[TMP28:%.*]] = getelementptr i16, ptr [[ARR]], i64 [[TMP27]]
85; CHECK-NEXT:    [[TMP29:%.*]] = getelementptr i16, ptr [[TMP28]], i32 0
86; CHECK-NEXT:    store <4 x i16> [[TMP26]], ptr [[TMP29]], align 2
87; CHECK-NEXT:    [[INDEX_NEXT15]] = add nuw i64 [[INDEX8]], 4
88; CHECK-NEXT:    [[VEC_IND_NEXT13]] = add <4 x i32> [[VEC_IND12]], splat (i32 4)
89; CHECK-NEXT:    [[TMP30:%.*]] = icmp eq i64 [[INDEX_NEXT15]], [[N_VEC4]]
90; CHECK-NEXT:    br i1 [[TMP30]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP3:![0-9]+]]
91; CHECK:       vec.epilog.middle.block:
92; CHECK-NEXT:    [[CMP_N16:%.*]] = icmp eq i64 [[TMP3]], [[N_VEC4]]
93; CHECK-NEXT:    br i1 [[CMP_N16]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
94; CHECK:       vec.epilog.scalar.ph:
95; CHECK-NEXT:    [[BC_RESUME_VAL7:%.*]] = phi i64 [ [[IND_END5]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ [[IV_START]], [[VECTOR_SCEVCHECK]] ], [ [[IV_START]], [[ITER_CHECK:%.*]] ], [ [[IND_END6]], [[VEC_EPILOG_ITER_CHECK]] ]
96; CHECK-NEXT:    br label [[LOOP:%.*]]
97; CHECK:       loop:
98; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL7]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
99; CHECK-NEXT:    [[IV_TRUNC:%.*]] = trunc i64 [[IV]] to i32
100; CHECK-NEXT:    [[STORE_IDX:%.*]] = add i32 [[IV_TRUNC]], -1
101; CHECK-NEXT:    [[X:%.*]] = mul i32 [[IV_TRUNC]], 196608
102; CHECK-NEXT:    [[Y:%.*]] = lshr exact i32 [[X]], 16
103; CHECK-NEXT:    [[STORE_VAL:%.*]] = trunc i32 [[Y]] to i16
104; CHECK-NEXT:    [[STORE_IDX_WIDE:%.*]] = zext i32 [[STORE_IDX]] to i64
105; CHECK-NEXT:    [[ADDR:%.*]] = getelementptr i16, ptr [[ARR]], i64 [[STORE_IDX_WIDE]]
106; CHECK-NEXT:    store i16 [[STORE_VAL]], ptr [[ADDR]], align 2
107; CHECK-NEXT:    [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
108; CHECK-NEXT:    [[LOOP_COND:%.*]] = icmp sgt i32 [[IV_TRUNC]], 91
109; CHECK-NEXT:    br i1 [[LOOP_COND]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP4:![0-9]+]]
110; CHECK:       exit:
111; CHECK-NEXT:    ret void
112;
113
114
115entry:
116  br label %loop
117
118loop:
119  %iv = phi i64 [ %iv.start, %entry ], [ %iv.next, %loop ]
120  %iv.trunc = trunc i64 %iv to i32
121  %store.idx = add i32 %iv.trunc, -1
122  %x = mul i32 %iv.trunc, 196608
123  %y = lshr exact i32 %x, 16
124  %store.val = trunc i32 %y to i16
125  %store.idx.wide = zext i32 %store.idx to i64
126  %addr = getelementptr i16, ptr %arr, i64 %store.idx.wide
127  store i16 %store.val, ptr %addr
128  %iv.next = add nuw nsw i64 %iv, 1
129  %loop.cond = icmp sgt i32 %iv.trunc, 91
130  br i1 %loop.cond, label %exit, label %loop
131
132exit:
133  ret void
134}
135
136define void @test_induction_step_needs_expansion(ptr noalias %j, ptr %k, i64 %l, i16 %off) {
137; CHECK-LABEL: @test_induction_step_needs_expansion(
138; CHECK-NEXT:  iter.check:
139; CHECK-NEXT:    [[TMP0:%.*]] = sub i16 0, [[OFF:%.*]]
140; CHECK-NEXT:    [[MIN_ITERS_CHECK:%.*]] = icmp ult i64 [[L:%.*]], 8
141; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH:%.*]], label [[VECTOR_MAIN_LOOP_ITER_CHECK:%.*]]
142; CHECK:       vector.main.loop.iter.check:
143; CHECK-NEXT:    [[MIN_ITERS_CHECK1:%.*]] = icmp ult i64 [[L]], 64
144; CHECK-NEXT:    br i1 [[MIN_ITERS_CHECK1]], label [[VEC_EPILOG_PH:%.*]], label [[VECTOR_PH:%.*]]
145; CHECK:       vector.ph:
146; CHECK-NEXT:    [[N_MOD_VF:%.*]] = urem i64 [[L]], 64
147; CHECK-NEXT:    [[N_VEC:%.*]] = sub i64 [[L]], [[N_MOD_VF]]
148; CHECK-NEXT:    [[DOTCAST:%.*]] = trunc i64 [[N_VEC]] to i16
149; CHECK-NEXT:    [[IND_END:%.*]] = mul i16 [[DOTCAST]], [[TMP0]]
150; CHECK-NEXT:    [[DOTSPLATINSERT2:%.*]] = insertelement <16 x i16> poison, i16 [[TMP0]], i64 0
151; CHECK-NEXT:    [[TMP2:%.*]] = shufflevector <16 x i16> [[DOTSPLATINSERT2]], <16 x i16> poison, <16 x i32> zeroinitializer
152; CHECK-NEXT:    [[TMP1:%.*]] = mul <16 x i16> splat (i16 16), [[TMP2]]
153; CHECK-NEXT:    [[DOTSPLATINSERT:%.*]] = insertelement <16 x i16> poison, i16 [[TMP0]], i64 0
154; CHECK-NEXT:    [[DOTSPLAT:%.*]] = shufflevector <16 x i16> [[DOTSPLATINSERT]], <16 x i16> poison, <16 x i32> zeroinitializer
155; CHECK-NEXT:    [[TMP11:%.*]] = mul <16 x i16> <i16 0, i16 1, i16 2, i16 3, i16 4, i16 5, i16 6, i16 7, i16 8, i16 9, i16 10, i16 11, i16 12, i16 13, i16 14, i16 15>, [[DOTSPLAT]]
156; CHECK-NEXT:    [[INDUCTION:%.*]] = add <16 x i16> zeroinitializer, [[TMP11]]
157; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <16 x i16> poison, i16 [[OFF]], i64 0
158; CHECK-NEXT:    [[BROADCAST_SPLAT3:%.*]] = shufflevector <16 x i16> [[BROADCAST_SPLATINSERT]], <16 x i16> poison, <16 x i32> zeroinitializer
159; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
160; CHECK:       vector.body:
161; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
162; CHECK-NEXT:    [[VEC_IND:%.*]] = phi <16 x i16> [ [[INDUCTION]], [[VECTOR_PH]] ], [ [[VEC_IND_NEXT:%.*]], [[VECTOR_BODY]] ]
163; CHECK-NEXT:    [[STEP_ADD:%.*]] = add <16 x i16> [[VEC_IND]], [[TMP1]]
164; CHECK-NEXT:    [[STEP_ADD_2:%.*]] = add <16 x i16> [[STEP_ADD]], [[TMP1]]
165; CHECK-NEXT:    [[STEP_ADD_3:%.*]] = add <16 x i16> [[STEP_ADD_2]], [[TMP1]]
166; CHECK-NEXT:    [[TMP3:%.*]] = add i64 [[INDEX]], 0
167; CHECK-NEXT:    [[TMP4:%.*]] = sub <16 x i16> [[VEC_IND]], [[BROADCAST_SPLAT3]]
168; CHECK-NEXT:    [[TMP5:%.*]] = sub <16 x i16> [[STEP_ADD]], [[BROADCAST_SPLAT3]]
169; CHECK-NEXT:    [[TMP6:%.*]] = sub <16 x i16> [[STEP_ADD_2]], [[BROADCAST_SPLAT3]]
170; CHECK-NEXT:    [[TMP7:%.*]] = sub <16 x i16> [[STEP_ADD_3]], [[BROADCAST_SPLAT3]]
171; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr inbounds i16, ptr [[K:%.*]], i64 [[TMP3]]
172; CHECK-NEXT:    [[TMP9:%.*]] = getelementptr inbounds i16, ptr [[TMP8]], i32 0
173; CHECK-NEXT:    [[TMP10:%.*]] = getelementptr inbounds i16, ptr [[TMP8]], i32 16
174; CHECK-NEXT:    [[TMP21:%.*]] = getelementptr inbounds i16, ptr [[TMP8]], i32 32
175; CHECK-NEXT:    [[TMP12:%.*]] = getelementptr inbounds i16, ptr [[TMP8]], i32 48
176; CHECK-NEXT:    store <16 x i16> [[TMP4]], ptr [[TMP9]], align 2
177; CHECK-NEXT:    store <16 x i16> [[TMP5]], ptr [[TMP10]], align 2
178; CHECK-NEXT:    store <16 x i16> [[TMP6]], ptr [[TMP21]], align 2
179; CHECK-NEXT:    store <16 x i16> [[TMP7]], ptr [[TMP12]], align 2
180; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 64
181; CHECK-NEXT:    [[VEC_IND_NEXT]] = add <16 x i16> [[STEP_ADD_3]], [[TMP1]]
182; CHECK-NEXT:    [[TMP13:%.*]] = icmp eq i64 [[INDEX_NEXT]], [[N_VEC]]
183; CHECK-NEXT:    br i1 [[TMP13]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP5:![0-9]+]]
184; CHECK:       middle.block:
185; CHECK-NEXT:    [[CMP_N:%.*]] = icmp eq i64 [[L]], [[N_VEC]]
186; CHECK-NEXT:    br i1 [[CMP_N]], label [[EXIT:%.*]], label [[VEC_EPILOG_ITER_CHECK:%.*]]
187; CHECK:       vec.epilog.iter.check:
188; CHECK-NEXT:    [[DOTCAST9:%.*]] = trunc i64 [[N_VEC]] to i16
189; CHECK-NEXT:    [[IND_END10:%.*]] = mul i16 [[DOTCAST9]], [[TMP0]]
190; CHECK-NEXT:    [[N_VEC_REMAINING:%.*]] = sub i64 [[L]], [[N_VEC]]
191; CHECK-NEXT:    [[MIN_EPILOG_ITERS_CHECK:%.*]] = icmp ult i64 [[N_VEC_REMAINING]], 8
192; CHECK-NEXT:    br i1 [[MIN_EPILOG_ITERS_CHECK]], label [[VEC_EPILOG_SCALAR_PH]], label [[VEC_EPILOG_PH]]
193; CHECK:       vec.epilog.ph:
194; CHECK-NEXT:    [[BC_RESUME_VAL1:%.*]] = phi i64 [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
195; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i16 [ [[IND_END]], [[VEC_EPILOG_ITER_CHECK]] ], [ 0, [[VECTOR_MAIN_LOOP_ITER_CHECK]] ]
196; CHECK-NEXT:    [[N_MOD_VF4:%.*]] = urem i64 [[L]], 8
197; CHECK-NEXT:    [[N_VEC5:%.*]] = sub i64 [[L]], [[N_MOD_VF4]]
198; CHECK-NEXT:    [[DOTCAST7:%.*]] = trunc i64 [[N_VEC5]] to i16
199; CHECK-NEXT:    [[IND_END8:%.*]] = mul i16 [[DOTCAST7]], [[TMP0]]
200; CHECK-NEXT:    [[DOTSPLATINSERT13:%.*]] = insertelement <8 x i16> poison, i16 [[BC_RESUME_VAL]], i64 0
201; CHECK-NEXT:    [[DOTSPLAT14:%.*]] = shufflevector <8 x i16> [[DOTSPLATINSERT13]], <8 x i16> poison, <8 x i32> zeroinitializer
202; CHECK-NEXT:    [[DOTSPLATINSERT15:%.*]] = insertelement <8 x i16> poison, i16 [[TMP0]], i64 0
203; CHECK-NEXT:    [[DOTSPLAT16:%.*]] = shufflevector <8 x i16> [[DOTSPLATINSERT15]], <8 x i16> poison, <8 x i32> zeroinitializer
204; CHECK-NEXT:    [[TMP14:%.*]] = mul <8 x i16> <i16 0, i16 1, i16 2, i16 3, i16 4, i16 5, i16 6, i16 7>, [[DOTSPLAT16]]
205; CHECK-NEXT:    [[INDUCTION17:%.*]] = add <8 x i16> [[DOTSPLAT14]], [[TMP14]]
206; CHECK-NEXT:    [[TMP15:%.*]] = mul i16 [[TMP0]], 8
207; CHECK-NEXT:    [[DOTSPLATINSERT18:%.*]] = insertelement <8 x i16> poison, i16 [[TMP15]], i64 0
208; CHECK-NEXT:    [[DOTSPLAT19:%.*]] = shufflevector <8 x i16> [[DOTSPLATINSERT18]], <8 x i16> poison, <8 x i32> zeroinitializer
209; CHECK-NEXT:    [[BROADCAST_SPLATINSERT22:%.*]] = insertelement <8 x i16> poison, i16 [[OFF]], i64 0
210; CHECK-NEXT:    [[BROADCAST_SPLAT23:%.*]] = shufflevector <8 x i16> [[BROADCAST_SPLATINSERT22]], <8 x i16> poison, <8 x i32> zeroinitializer
211; CHECK-NEXT:    br label [[VEC_EPILOG_VECTOR_BODY:%.*]]
212; CHECK:       vec.epilog.vector.body:
213; CHECK-NEXT:    [[INDEX12:%.*]] = phi i64 [ [[BC_RESUME_VAL1]], [[VEC_EPILOG_PH]] ], [ [[INDEX_NEXT24:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
214; CHECK-NEXT:    [[VEC_IND20:%.*]] = phi <8 x i16> [ [[INDUCTION17]], [[VEC_EPILOG_PH]] ], [ [[VEC_IND_NEXT21:%.*]], [[VEC_EPILOG_VECTOR_BODY]] ]
215; CHECK-NEXT:    [[TMP16:%.*]] = add i64 [[INDEX12]], 0
216; CHECK-NEXT:    [[TMP17:%.*]] = sub <8 x i16> [[VEC_IND20]], [[BROADCAST_SPLAT23]]
217; CHECK-NEXT:    [[TMP18:%.*]] = getelementptr inbounds i16, ptr [[K]], i64 [[TMP16]]
218; CHECK-NEXT:    [[TMP19:%.*]] = getelementptr inbounds i16, ptr [[TMP18]], i32 0
219; CHECK-NEXT:    store <8 x i16> [[TMP17]], ptr [[TMP19]], align 2
220; CHECK-NEXT:    [[INDEX_NEXT24]] = add nuw i64 [[INDEX12]], 8
221; CHECK-NEXT:    [[VEC_IND_NEXT21]] = add <8 x i16> [[VEC_IND20]], [[DOTSPLAT19]]
222; CHECK-NEXT:    [[TMP20:%.*]] = icmp eq i64 [[INDEX_NEXT24]], [[N_VEC5]]
223; CHECK-NEXT:    br i1 [[TMP20]], label [[VEC_EPILOG_MIDDLE_BLOCK:%.*]], label [[VEC_EPILOG_VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
224; CHECK:       vec.epilog.middle.block:
225; CHECK-NEXT:    [[CMP_N25:%.*]] = icmp eq i64 [[L]], [[N_VEC5]]
226; CHECK-NEXT:    br i1 [[CMP_N25]], label [[EXIT]], label [[VEC_EPILOG_SCALAR_PH]]
227; CHECK:       vec.epilog.scalar.ph:
228; CHECK-NEXT:    [[BC_RESUME_VAL6:%.*]] = phi i64 [ [[N_VEC5]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK:%.*]] ], [ [[N_VEC]], [[VEC_EPILOG_ITER_CHECK]] ]
229; CHECK-NEXT:    [[BC_RESUME_VAL11:%.*]] = phi i16 [ [[IND_END8]], [[VEC_EPILOG_MIDDLE_BLOCK]] ], [ 0, [[ITER_CHECK]] ], [ [[IND_END10]], [[VEC_EPILOG_ITER_CHECK]] ]
230; CHECK-NEXT:    br label [[LOOP:%.*]]
231; CHECK:       loop:
232; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL6]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP]] ]
233; CHECK-NEXT:    [[P_09:%.*]] = phi i16 [ [[BC_RESUME_VAL11]], [[VEC_EPILOG_SCALAR_PH]] ], [ [[ADD:%.*]], [[LOOP]] ]
234; CHECK-NEXT:    [[ADD]] = sub i16 [[P_09]], [[OFF]]
235; CHECK-NEXT:    [[ARRAYIDX3:%.*]] = getelementptr inbounds i16, ptr [[K]], i64 [[IV]]
236; CHECK-NEXT:    store i16 [[ADD]], ptr [[ARRAYIDX3]], align 2
237; CHECK-NEXT:    [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
238; CHECK-NEXT:    [[EC:%.*]] = icmp eq i64 [[IV_NEXT]], [[L]]
239; CHECK-NEXT:    br i1 [[EC]], label [[EXIT]], label [[LOOP]], !llvm.loop [[LOOP7:![0-9]+]]
240; CHECK:       exit:
241; CHECK-NEXT:    ret void
242;
243
244
245entry:
246  br label %loop
247
248loop:
249  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
250  %p.09 = phi i16 [ 0, %entry ], [ %add, %loop ]
251  %add = sub i16 %p.09, %off
252  %arrayidx3 = getelementptr inbounds i16, ptr %k, i64 %iv
253  store i16 %add, ptr %arrayidx3, align 2
254  %iv.next = add nuw nsw i64 %iv, 1
255  %ec = icmp eq i64 %iv.next, %l
256  br i1 %ec , label %exit, label %loop
257
258exit:
259  ret void
260}
261