xref: /llvm-project/llvm/test/Transforms/LoopVectorize/load-of-struct-deref-pred.ll (revision 38fffa630ee80163dc65e759392ad29798905679) 
1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py UTC_ARGS: --version 2
2; RUN: opt -passes=loop-vectorize -force-vector-width=4 -force-vector-interleave=1 -S %s | FileCheck %s
3
4target datalayout = "e-m:o-i64:64-i128:128-n32:64-S128"
5
6%struct.Foo = type { [32000 x i32], [32000 x i32] }
7
8@foo = global %struct.Foo zeroinitializer, align 4
9
10define void @accesses_to_struct_dereferenceable(ptr noalias %dst) {
11; CHECK-LABEL: define void @accesses_to_struct_dereferenceable
12; CHECK-SAME: (ptr noalias [[DST:%.*]]) {
13; CHECK-NEXT:  entry:
14; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
15; CHECK:       vector.ph:
16; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
17; CHECK:       vector.body:
18; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
19; CHECK-NEXT:    [[TMP0:%.*]] = add i64 [[INDEX]], 0
20; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[TMP0]]
21; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0
22; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP2]], align 4
23; CHECK-NEXT:    [[TMP3:%.*]] = icmp ult <4 x i32> [[WIDE_LOAD]], zeroinitializer
24; CHECK-NEXT:    [[TMP4:%.*]] = xor <4 x i1> [[TMP3]], splat (i1 true)
25; CHECK-NEXT:    [[TMP5:%.*]] = getelementptr [[STRUCT_FOO:%.*]], ptr @foo, i64 0, i32 1, i64 [[TMP0]]
26; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr i32, ptr [[TMP5]], i32 0
27; CHECK-NEXT:    [[WIDE_LOAD1:%.*]] = load <4 x i32>, ptr [[TMP6]], align 4
28; CHECK-NEXT:    [[TMP7:%.*]] = getelementptr [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[TMP0]]
29; CHECK-NEXT:    [[TMP8:%.*]] = getelementptr i32, ptr [[TMP7]], i32 0
30; CHECK-NEXT:    [[WIDE_LOAD2:%.*]] = load <4 x i32>, ptr [[TMP8]], align 4
31; CHECK-NEXT:    [[PREDPHI:%.*]] = select <4 x i1> [[TMP4]], <4 x i32> [[WIDE_LOAD1]], <4 x i32> [[WIDE_LOAD2]]
32; CHECK-NEXT:    store <4 x i32> [[PREDPHI]], ptr [[TMP2]], align 4
33; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
34; CHECK-NEXT:    [[TMP9:%.*]] = icmp eq i64 [[INDEX_NEXT]], 32000
35; CHECK-NEXT:    br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP0:![0-9]+]]
36; CHECK:       middle.block:
37; CHECK-NEXT:    br i1 true, label [[EXIT:%.*]], label [[SCALAR_PH]]
38; CHECK:       scalar.ph:
39; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 32000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
40; CHECK-NEXT:    br label [[LOOP_HEADER:%.*]]
41; CHECK:       loop.header:
42; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
43; CHECK-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[IV]]
44; CHECK-NEXT:    [[D:%.*]] = load i32, ptr [[GEP_DST]], align 4
45; CHECK-NEXT:    [[CMP3:%.*]] = icmp ult i32 [[D]], 0
46; CHECK-NEXT:    br i1 [[CMP3]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
47; CHECK:       if.then:
48; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[IV]]
49; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
50; CHECK-NEXT:    br label [[LOOP_LATCH]]
51; CHECK:       if.else:
52; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[IV]]
53; CHECK-NEXT:    [[L_B:%.*]] = load i32, ptr [[GEP_B]], align 4
54; CHECK-NEXT:    br label [[LOOP_LATCH]]
55; CHECK:       loop.latch:
56; CHECK-NEXT:    [[TMP_0:%.*]] = phi i32 [ [[L_A]], [[IF_THEN]] ], [ [[L_B]], [[IF_ELSE]] ]
57; CHECK-NEXT:    store i32 [[TMP_0]], ptr [[GEP_DST]], align 4
58; CHECK-NEXT:    [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
59; CHECK-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], 32000
60; CHECK-NEXT:    br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_HEADER]], !llvm.loop [[LOOP3:![0-9]+]]
61; CHECK:       exit:
62; CHECK-NEXT:    ret void
63;
64entry:
65  br label %loop.header
66
67loop.header:
68  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
69  %gep.dst = getelementptr inbounds i32, ptr %dst, i64 %iv
70  %d = load i32, ptr %gep.dst, align 4
71  %cmp3 = icmp ult i32 %d, 0
72  br i1 %cmp3, label %if.then, label %if.else
73
74if.then:
75  %gep.a = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 0, i64 %iv
76  %l.a = load i32, ptr %gep.a, align 4
77  br label %loop.latch
78
79if.else:
80  %gep.b = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 1, i64 %iv
81  %l.b = load i32, ptr %gep.b, align 4
82  br label %loop.latch
83
84loop.latch:
85  %tmp.0 = phi i32 [ %l.a, %if.then ], [ %l.b, %if.else ]
86  store i32 %tmp.0, ptr %gep.dst, align 4
87  %iv.next = add nuw nsw i64 %iv, 1
88  %exitcond.not = icmp eq i64 %iv.next, 32000
89  br i1 %exitcond.not, label %exit, label %loop.header
90
91exit:
92  ret void
93}
94
95define void @accesses_to_struct_may_not_be_dereferenceable_due_to_loop_bound(ptr noalias %dst) {
96; CHECK-LABEL: define void @accesses_to_struct_may_not_be_dereferenceable_due_to_loop_bound
97; CHECK-SAME: (ptr noalias [[DST:%.*]]) {
98; CHECK-NEXT:  entry:
99; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
100; CHECK:       vector.ph:
101; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
102; CHECK:       vector.body:
103; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_LOAD_CONTINUE6:%.*]] ]
104; CHECK-NEXT:    [[TMP0:%.*]] = add i64 [[INDEX]], 0
105; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[TMP0]]
106; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0
107; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP2]], align 4
108; CHECK-NEXT:    [[TMP3:%.*]] = icmp ult <4 x i32> [[WIDE_LOAD]], zeroinitializer
109; CHECK-NEXT:    [[TMP4:%.*]] = xor <4 x i1> [[TMP3]], splat (i1 true)
110; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x i1> [[TMP4]], i32 0
111; CHECK-NEXT:    br i1 [[TMP5]], label [[PRED_LOAD_IF:%.*]], label [[PRED_LOAD_CONTINUE:%.*]]
112; CHECK:       pred.load.if:
113; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr @foo, i64 0, i32 1, i64 [[TMP0]]
114; CHECK-NEXT:    [[TMP7:%.*]] = load i32, ptr [[TMP6]], align 4
115; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x i32> poison, i32 [[TMP7]], i32 0
116; CHECK-NEXT:    br label [[PRED_LOAD_CONTINUE]]
117; CHECK:       pred.load.continue:
118; CHECK-NEXT:    [[TMP9:%.*]] = phi <4 x i32> [ poison, [[VECTOR_BODY]] ], [ [[TMP8]], [[PRED_LOAD_IF]] ]
119; CHECK-NEXT:    [[TMP10:%.*]] = extractelement <4 x i1> [[TMP4]], i32 1
120; CHECK-NEXT:    br i1 [[TMP10]], label [[PRED_LOAD_IF1:%.*]], label [[PRED_LOAD_CONTINUE2:%.*]]
121; CHECK:       pred.load.if1:
122; CHECK-NEXT:    [[TMP11:%.*]] = add i64 [[INDEX]], 1
123; CHECK-NEXT:    [[TMP12:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP11]]
124; CHECK-NEXT:    [[TMP13:%.*]] = load i32, ptr [[TMP12]], align 4
125; CHECK-NEXT:    [[TMP14:%.*]] = insertelement <4 x i32> [[TMP9]], i32 [[TMP13]], i32 1
126; CHECK-NEXT:    br label [[PRED_LOAD_CONTINUE2]]
127; CHECK:       pred.load.continue2:
128; CHECK-NEXT:    [[TMP15:%.*]] = phi <4 x i32> [ [[TMP9]], [[PRED_LOAD_CONTINUE]] ], [ [[TMP14]], [[PRED_LOAD_IF1]] ]
129; CHECK-NEXT:    [[TMP16:%.*]] = extractelement <4 x i1> [[TMP4]], i32 2
130; CHECK-NEXT:    br i1 [[TMP16]], label [[PRED_LOAD_IF3:%.*]], label [[PRED_LOAD_CONTINUE4:%.*]]
131; CHECK:       pred.load.if3:
132; CHECK-NEXT:    [[TMP17:%.*]] = add i64 [[INDEX]], 2
133; CHECK-NEXT:    [[TMP18:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP17]]
134; CHECK-NEXT:    [[TMP19:%.*]] = load i32, ptr [[TMP18]], align 4
135; CHECK-NEXT:    [[TMP20:%.*]] = insertelement <4 x i32> [[TMP15]], i32 [[TMP19]], i32 2
136; CHECK-NEXT:    br label [[PRED_LOAD_CONTINUE4]]
137; CHECK:       pred.load.continue4:
138; CHECK-NEXT:    [[TMP21:%.*]] = phi <4 x i32> [ [[TMP15]], [[PRED_LOAD_CONTINUE2]] ], [ [[TMP20]], [[PRED_LOAD_IF3]] ]
139; CHECK-NEXT:    [[TMP22:%.*]] = extractelement <4 x i1> [[TMP4]], i32 3
140; CHECK-NEXT:    br i1 [[TMP22]], label [[PRED_LOAD_IF5:%.*]], label [[PRED_LOAD_CONTINUE6]]
141; CHECK:       pred.load.if5:
142; CHECK-NEXT:    [[TMP23:%.*]] = add i64 [[INDEX]], 3
143; CHECK-NEXT:    [[TMP24:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP23]]
144; CHECK-NEXT:    [[TMP25:%.*]] = load i32, ptr [[TMP24]], align 4
145; CHECK-NEXT:    [[TMP26:%.*]] = insertelement <4 x i32> [[TMP21]], i32 [[TMP25]], i32 3
146; CHECK-NEXT:    br label [[PRED_LOAD_CONTINUE6]]
147; CHECK:       pred.load.continue6:
148; CHECK-NEXT:    [[TMP27:%.*]] = phi <4 x i32> [ [[TMP21]], [[PRED_LOAD_CONTINUE4]] ], [ [[TMP26]], [[PRED_LOAD_IF5]] ]
149; CHECK-NEXT:    [[TMP28:%.*]] = getelementptr [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[TMP0]]
150; CHECK-NEXT:    [[TMP29:%.*]] = getelementptr i32, ptr [[TMP28]], i32 0
151; CHECK-NEXT:    [[WIDE_LOAD7:%.*]] = load <4 x i32>, ptr [[TMP29]], align 4
152; CHECK-NEXT:    [[PREDPHI:%.*]] = select <4 x i1> [[TMP4]], <4 x i32> [[TMP27]], <4 x i32> [[WIDE_LOAD7]]
153; CHECK-NEXT:    [[TMP30:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0
154; CHECK-NEXT:    store <4 x i32> [[PREDPHI]], ptr [[TMP30]], align 4
155; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
156; CHECK-NEXT:    [[TMP31:%.*]] = icmp eq i64 [[INDEX_NEXT]], 32000
157; CHECK-NEXT:    br i1 [[TMP31]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP4:![0-9]+]]
158; CHECK:       middle.block:
159; CHECK-NEXT:    br i1 false, label [[EXIT:%.*]], label [[SCALAR_PH]]
160; CHECK:       scalar.ph:
161; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 32000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
162; CHECK-NEXT:    br label [[LOOP_HEADER:%.*]]
163; CHECK:       loop.header:
164; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
165; CHECK-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[IV]]
166; CHECK-NEXT:    [[D:%.*]] = load i32, ptr [[GEP_DST]], align 4
167; CHECK-NEXT:    [[CMP3:%.*]] = icmp ult i32 [[D]], 0
168; CHECK-NEXT:    br i1 [[CMP3]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
169; CHECK:       if.then:
170; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[IV]]
171; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
172; CHECK-NEXT:    br label [[LOOP_LATCH]]
173; CHECK:       if.else:
174; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[IV]]
175; CHECK-NEXT:    [[L_B:%.*]] = load i32, ptr [[GEP_B]], align 4
176; CHECK-NEXT:    br label [[LOOP_LATCH]]
177; CHECK:       loop.latch:
178; CHECK-NEXT:    [[TMP_0:%.*]] = phi i32 [ [[L_A]], [[IF_THEN]] ], [ [[L_B]], [[IF_ELSE]] ]
179; CHECK-NEXT:    store i32 [[TMP_0]], ptr [[GEP_DST]], align 4
180; CHECK-NEXT:    [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
181; CHECK-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], 32001
182; CHECK-NEXT:    br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_HEADER]], !llvm.loop [[LOOP5:![0-9]+]]
183; CHECK:       exit:
184; CHECK-NEXT:    ret void
185;
186entry:
187  br label %loop.header
188
189loop.header:
190  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
191  %gep.dst = getelementptr inbounds i32, ptr %dst, i64 %iv
192  %d = load i32, ptr %gep.dst, align 4
193  %cmp3 = icmp ult i32 %d, 0
194  br i1 %cmp3, label %if.then, label %if.else
195
196if.then:
197  %gep.a = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 0, i64 %iv
198  %l.a = load i32, ptr %gep.a, align 4
199  br label %loop.latch
200
201if.else:
202  %gep.b = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 1, i64 %iv
203  %l.b = load i32, ptr %gep.b, align 4
204  br label %loop.latch
205
206loop.latch:
207  %tmp.0 = phi i32 [ %l.a, %if.then ], [ %l.b, %if.else ]
208  store i32 %tmp.0, ptr %gep.dst, align 4
209  %iv.next = add nuw nsw i64 %iv, 1
210  %exitcond.not = icmp eq i64 %iv.next, 32001
211  br i1 %exitcond.not, label %exit, label %loop.header
212
213exit:
214  ret void
215}
216
217define void @accesses_to_struct_may_not_be_dereferenceable_access_size(ptr noalias %dst) {
218; CHECK-LABEL: define void @accesses_to_struct_may_not_be_dereferenceable_access_size
219; CHECK-SAME: (ptr noalias [[DST:%.*]]) {
220; CHECK-NEXT:  entry:
221; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
222; CHECK:       vector.ph:
223; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
224; CHECK:       vector.body:
225; CHECK-NEXT:    [[INDEX:%.*]] = phi i64 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[PRED_LOAD_CONTINUE6:%.*]] ]
226; CHECK-NEXT:    [[TMP0:%.*]] = add i64 [[INDEX]], 0
227; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[TMP0]]
228; CHECK-NEXT:    [[TMP2:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0
229; CHECK-NEXT:    [[WIDE_LOAD:%.*]] = load <4 x i32>, ptr [[TMP2]], align 4
230; CHECK-NEXT:    [[TMP3:%.*]] = icmp ult <4 x i32> [[WIDE_LOAD]], zeroinitializer
231; CHECK-NEXT:    [[TMP4:%.*]] = xor <4 x i1> [[TMP3]], splat (i1 true)
232; CHECK-NEXT:    [[TMP5:%.*]] = extractelement <4 x i1> [[TMP4]], i32 0
233; CHECK-NEXT:    br i1 [[TMP5]], label [[PRED_LOAD_IF:%.*]], label [[PRED_LOAD_CONTINUE:%.*]]
234; CHECK:       pred.load.if:
235; CHECK-NEXT:    [[TMP6:%.*]] = getelementptr inbounds [[STRUCT_FOO:%.*]], ptr @foo, i64 0, i32 1, i64 [[TMP0]]
236; CHECK-NEXT:    [[TMP7:%.*]] = load i64, ptr [[TMP6]], align 4
237; CHECK-NEXT:    [[TMP8:%.*]] = insertelement <4 x i64> poison, i64 [[TMP7]], i32 0
238; CHECK-NEXT:    br label [[PRED_LOAD_CONTINUE]]
239; CHECK:       pred.load.continue:
240; CHECK-NEXT:    [[TMP9:%.*]] = phi <4 x i64> [ poison, [[VECTOR_BODY]] ], [ [[TMP8]], [[PRED_LOAD_IF]] ]
241; CHECK-NEXT:    [[TMP10:%.*]] = extractelement <4 x i1> [[TMP4]], i32 1
242; CHECK-NEXT:    br i1 [[TMP10]], label [[PRED_LOAD_IF1:%.*]], label [[PRED_LOAD_CONTINUE2:%.*]]
243; CHECK:       pred.load.if1:
244; CHECK-NEXT:    [[TMP11:%.*]] = add i64 [[INDEX]], 1
245; CHECK-NEXT:    [[TMP12:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP11]]
246; CHECK-NEXT:    [[TMP13:%.*]] = load i64, ptr [[TMP12]], align 4
247; CHECK-NEXT:    [[TMP14:%.*]] = insertelement <4 x i64> [[TMP9]], i64 [[TMP13]], i32 1
248; CHECK-NEXT:    br label [[PRED_LOAD_CONTINUE2]]
249; CHECK:       pred.load.continue2:
250; CHECK-NEXT:    [[TMP15:%.*]] = phi <4 x i64> [ [[TMP9]], [[PRED_LOAD_CONTINUE]] ], [ [[TMP14]], [[PRED_LOAD_IF1]] ]
251; CHECK-NEXT:    [[TMP16:%.*]] = extractelement <4 x i1> [[TMP4]], i32 2
252; CHECK-NEXT:    br i1 [[TMP16]], label [[PRED_LOAD_IF3:%.*]], label [[PRED_LOAD_CONTINUE4:%.*]]
253; CHECK:       pred.load.if3:
254; CHECK-NEXT:    [[TMP17:%.*]] = add i64 [[INDEX]], 2
255; CHECK-NEXT:    [[TMP18:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP17]]
256; CHECK-NEXT:    [[TMP19:%.*]] = load i64, ptr [[TMP18]], align 4
257; CHECK-NEXT:    [[TMP20:%.*]] = insertelement <4 x i64> [[TMP15]], i64 [[TMP19]], i32 2
258; CHECK-NEXT:    br label [[PRED_LOAD_CONTINUE4]]
259; CHECK:       pred.load.continue4:
260; CHECK-NEXT:    [[TMP21:%.*]] = phi <4 x i64> [ [[TMP15]], [[PRED_LOAD_CONTINUE2]] ], [ [[TMP20]], [[PRED_LOAD_IF3]] ]
261; CHECK-NEXT:    [[TMP22:%.*]] = extractelement <4 x i1> [[TMP4]], i32 3
262; CHECK-NEXT:    br i1 [[TMP22]], label [[PRED_LOAD_IF5:%.*]], label [[PRED_LOAD_CONTINUE6]]
263; CHECK:       pred.load.if5:
264; CHECK-NEXT:    [[TMP23:%.*]] = add i64 [[INDEX]], 3
265; CHECK-NEXT:    [[TMP24:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[TMP23]]
266; CHECK-NEXT:    [[TMP25:%.*]] = load i64, ptr [[TMP24]], align 4
267; CHECK-NEXT:    [[TMP26:%.*]] = insertelement <4 x i64> [[TMP21]], i64 [[TMP25]], i32 3
268; CHECK-NEXT:    br label [[PRED_LOAD_CONTINUE6]]
269; CHECK:       pred.load.continue6:
270; CHECK-NEXT:    [[TMP27:%.*]] = phi <4 x i64> [ [[TMP21]], [[PRED_LOAD_CONTINUE4]] ], [ [[TMP26]], [[PRED_LOAD_IF5]] ]
271; CHECK-NEXT:    [[TMP28:%.*]] = trunc <4 x i64> [[TMP27]] to <4 x i32>
272; CHECK-NEXT:    [[TMP29:%.*]] = getelementptr [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[TMP0]]
273; CHECK-NEXT:    [[TMP30:%.*]] = getelementptr i32, ptr [[TMP29]], i32 0
274; CHECK-NEXT:    [[WIDE_LOAD7:%.*]] = load <4 x i32>, ptr [[TMP30]], align 4
275; CHECK-NEXT:    [[PREDPHI:%.*]] = select <4 x i1> [[TMP4]], <4 x i32> [[TMP28]], <4 x i32> [[WIDE_LOAD7]]
276; CHECK-NEXT:    [[TMP31:%.*]] = getelementptr inbounds i32, ptr [[TMP1]], i32 0
277; CHECK-NEXT:    store <4 x i32> [[PREDPHI]], ptr [[TMP31]], align 4
278; CHECK-NEXT:    [[INDEX_NEXT]] = add nuw i64 [[INDEX]], 4
279; CHECK-NEXT:    [[TMP32:%.*]] = icmp eq i64 [[INDEX_NEXT]], 32000
280; CHECK-NEXT:    br i1 [[TMP32]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop [[LOOP6:![0-9]+]]
281; CHECK:       middle.block:
282; CHECK-NEXT:    br i1 true, label [[EXIT:%.*]], label [[SCALAR_PH]]
283; CHECK:       scalar.ph:
284; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i64 [ 32000, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
285; CHECK-NEXT:    br label [[LOOP_HEADER:%.*]]
286; CHECK:       loop.header:
287; CHECK-NEXT:    [[IV:%.*]] = phi i64 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[IV_NEXT:%.*]], [[LOOP_LATCH:%.*]] ]
288; CHECK-NEXT:    [[GEP_DST:%.*]] = getelementptr inbounds i32, ptr [[DST]], i64 [[IV]]
289; CHECK-NEXT:    [[D:%.*]] = load i32, ptr [[GEP_DST]], align 4
290; CHECK-NEXT:    [[CMP3:%.*]] = icmp ult i32 [[D]], 0
291; CHECK-NEXT:    br i1 [[CMP3]], label [[IF_THEN:%.*]], label [[IF_ELSE:%.*]]
292; CHECK:       if.then:
293; CHECK-NEXT:    [[GEP_A:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 0, i64 [[IV]]
294; CHECK-NEXT:    [[L_A:%.*]] = load i32, ptr [[GEP_A]], align 4
295; CHECK-NEXT:    br label [[LOOP_LATCH]]
296; CHECK:       if.else:
297; CHECK-NEXT:    [[GEP_B:%.*]] = getelementptr inbounds [[STRUCT_FOO]], ptr @foo, i64 0, i32 1, i64 [[IV]]
298; CHECK-NEXT:    [[L_B:%.*]] = load i64, ptr [[GEP_B]], align 4
299; CHECK-NEXT:    [[T:%.*]] = trunc i64 [[L_B]] to i32
300; CHECK-NEXT:    br label [[LOOP_LATCH]]
301; CHECK:       loop.latch:
302; CHECK-NEXT:    [[TMP_0:%.*]] = phi i32 [ [[L_A]], [[IF_THEN]] ], [ [[T]], [[IF_ELSE]] ]
303; CHECK-NEXT:    store i32 [[TMP_0]], ptr [[GEP_DST]], align 4
304; CHECK-NEXT:    [[IV_NEXT]] = add nuw nsw i64 [[IV]], 1
305; CHECK-NEXT:    [[EXITCOND_NOT:%.*]] = icmp eq i64 [[IV_NEXT]], 32000
306; CHECK-NEXT:    br i1 [[EXITCOND_NOT]], label [[EXIT]], label [[LOOP_HEADER]], !llvm.loop [[LOOP7:![0-9]+]]
307; CHECK:       exit:
308; CHECK-NEXT:    ret void
309;
310entry:
311  br label %loop.header
312
313loop.header:
314  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop.latch ]
315  %gep.dst = getelementptr inbounds i32, ptr %dst, i64 %iv
316  %d = load i32, ptr %gep.dst, align 4
317  %cmp3 = icmp ult i32 %d, 0
318  br i1 %cmp3, label %if.then, label %if.else
319
320if.then:
321  %gep.a = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 0, i64 %iv
322  %l.a = load i32, ptr %gep.a, align 4
323  br label %loop.latch
324
325if.else:
326  %gep.b = getelementptr inbounds %struct.Foo, ptr @foo, i64 0, i32 1, i64 %iv
327  %l.b = load i64, ptr %gep.b, align 4
328  %t = trunc i64 %l.b to i32
329  br label %loop.latch
330
331loop.latch:
332  %tmp.0 = phi i32 [ %l.a, %if.then ], [ %t, %if.else ]
333  store i32 %tmp.0, ptr %gep.dst, align 4
334  %iv.next = add nuw nsw i64 %iv, 1
335  %exitcond.not = icmp eq i64 %iv.next, 32000
336  br i1 %exitcond.not, label %exit, label %loop.header
337
338exit:
339  ret void
340}
341