1; NOTE: Assertions have been autogenerated by utils/update_test_checks.py
2; This test verifies that the loop vectorizer will NOT vectorize loops that
3; will produce a tail loop with the optimize for size or the minimize size
4; attributes. This is a target-dependent version of the test.
5; RUN: opt < %s -loop-vectorize -force-vector-width=64 -S -mtriple=x86_64-unknown-linux -mcpu=skx | FileCheck %s
6; RUN: opt < %s -loop-vectorize -S -mtriple=x86_64-unknown-linux -mcpu=skx | FileCheck %s --check-prefix AUTOVF
7
8target datalayout = "E-m:e-p:32:32-i64:32-f64:32:64-a:0:32-n32-S128"
9
10@tab = common global [32 x i8] zeroinitializer, align 1
11
12define i32 @foo_optsize() #0 {
13; CHECK-LABEL: @foo_optsize(
14; CHECK-NEXT:  entry:
15; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
16; CHECK:       vector.ph:
17; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
18; CHECK:       vector.body:
19; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
20; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <64 x i32> undef, i32 [[INDEX]], i32 0
21; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <64 x i32> [[BROADCAST_SPLATINSERT]], <64 x i32> undef, <64 x i32> zeroinitializer
22; CHECK-NEXT:    [[INDUCTION:%.*]] = add <64 x i32> [[BROADCAST_SPLAT]], <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, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31, i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 61, i32 62, i32 63>
23; CHECK-NEXT:    [[TMP0:%.*]] = add i32 [[INDEX]], 0
24; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 [[TMP0]]
25; CHECK-NEXT:    [[TMP2:%.*]] = icmp ule <64 x i32> [[INDUCTION]], <i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202>
26; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i8, i8* [[TMP1]], i32 0
27; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8* [[TMP3]] to <64 x i8>*
28; CHECK-NEXT:    [[WIDE_MASKED_LOAD:%.*]] = call <64 x i8> @llvm.masked.load.v64i8.p0v64i8(<64 x i8>* [[TMP4]], i32 1, <64 x i1> [[TMP2]], <64 x i8> undef)
29; CHECK-NEXT:    [[TMP5:%.*]] = icmp eq <64 x i8> [[WIDE_MASKED_LOAD]], zeroinitializer
30; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <64 x i1> [[TMP5]], i32 0
31; CHECK-NEXT:    [[TMP7:%.*]] = select <64 x i1> [[TMP5]], <64 x i8> <i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2>, <64 x i8> <i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1>
32; CHECK-NEXT:    [[TMP8:%.*]] = bitcast i8* [[TMP3]] to <64 x i8>*
33; CHECK-NEXT:    call void @llvm.masked.store.v64i8.p0v64i8(<64 x i8> [[TMP7]], <64 x i8>* [[TMP8]], i32 1, <64 x i1> [[TMP2]])
34; CHECK-NEXT:    [[INDEX_NEXT]] = add i32 [[INDEX]], 64
35; CHECK-NEXT:    [[TMP9:%.*]] = icmp eq i32 [[INDEX_NEXT]], 256
36; CHECK-NEXT:    br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !0
37; CHECK:       middle.block:
38; CHECK-NEXT:    br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
39; CHECK:       scalar.ph:
40; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i32 [ 256, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
41; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
42; CHECK:       for.body:
43; CHECK-NEXT:    [[I_08:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
44; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 [[I_08]]
45; CHECK-NEXT:    [[TMP10:%.*]] = load i8, i8* [[ARRAYIDX]], align 1
46; CHECK-NEXT:    [[CMP1:%.*]] = icmp eq i8 [[TMP10]], 0
47; CHECK-NEXT:    [[DOT:%.*]] = select i1 [[CMP1]], i8 2, i8 1
48; CHECK-NEXT:    store i8 [[DOT]], i8* [[ARRAYIDX]], align 1
49; CHECK-NEXT:    [[INC]] = add nsw i32 [[I_08]], 1
50; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[I_08]], 202
51; CHECK-NEXT:    br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]], !llvm.loop !2
52; CHECK:       for.end:
53; CHECK-NEXT:    ret i32 0
54;
55
56entry:
57  br label %for.body
58
59for.body:                                         ; preds = %for.body, %entry
60  %i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
61  %arrayidx = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %i.08
62  %0 = load i8, i8* %arrayidx, align 1
63  %cmp1 = icmp eq i8 %0, 0
64  %. = select i1 %cmp1, i8 2, i8 1
65  store i8 %., i8* %arrayidx, align 1
66  %inc = add nsw i32 %i.08, 1
67  %exitcond = icmp eq i32 %i.08, 202
68  br i1 %exitcond, label %for.end, label %for.body
69
70for.end:                                          ; preds = %for.body
71  ret i32 0
72}
73
74attributes #0 = { optsize }
75
76define i32 @foo_minsize() #1 {
77; CHECK-LABEL: @foo_minsize(
78; CHECK-NEXT:  entry:
79; CHECK-NEXT:    br i1 false, label [[SCALAR_PH:%.*]], label [[VECTOR_PH:%.*]]
80; CHECK:       vector.ph:
81; CHECK-NEXT:    br label [[VECTOR_BODY:%.*]]
82; CHECK:       vector.body:
83; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, [[VECTOR_PH]] ], [ [[INDEX_NEXT:%.*]], [[VECTOR_BODY]] ]
84; CHECK-NEXT:    [[BROADCAST_SPLATINSERT:%.*]] = insertelement <64 x i32> undef, i32 [[INDEX]], i32 0
85; CHECK-NEXT:    [[BROADCAST_SPLAT:%.*]] = shufflevector <64 x i32> [[BROADCAST_SPLATINSERT]], <64 x i32> undef, <64 x i32> zeroinitializer
86; CHECK-NEXT:    [[INDUCTION:%.*]] = add <64 x i32> [[BROADCAST_SPLAT]], <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, i32 16, i32 17, i32 18, i32 19, i32 20, i32 21, i32 22, i32 23, i32 24, i32 25, i32 26, i32 27, i32 28, i32 29, i32 30, i32 31, i32 32, i32 33, i32 34, i32 35, i32 36, i32 37, i32 38, i32 39, i32 40, i32 41, i32 42, i32 43, i32 44, i32 45, i32 46, i32 47, i32 48, i32 49, i32 50, i32 51, i32 52, i32 53, i32 54, i32 55, i32 56, i32 57, i32 58, i32 59, i32 60, i32 61, i32 62, i32 63>
87; CHECK-NEXT:    [[TMP0:%.*]] = add i32 [[INDEX]], 0
88; CHECK-NEXT:    [[TMP1:%.*]] = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 [[TMP0]]
89; CHECK-NEXT:    [[TMP2:%.*]] = icmp ule <64 x i32> [[INDUCTION]], <i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202, i32 202>
90; CHECK-NEXT:    [[TMP3:%.*]] = getelementptr inbounds i8, i8* [[TMP1]], i32 0
91; CHECK-NEXT:    [[TMP4:%.*]] = bitcast i8* [[TMP3]] to <64 x i8>*
92; CHECK-NEXT:    [[WIDE_MASKED_LOAD:%.*]] = call <64 x i8> @llvm.masked.load.v64i8.p0v64i8(<64 x i8>* [[TMP4]], i32 1, <64 x i1> [[TMP2]], <64 x i8> undef)
93; CHECK-NEXT:    [[TMP5:%.*]] = icmp eq <64 x i8> [[WIDE_MASKED_LOAD]], zeroinitializer
94; CHECK-NEXT:    [[TMP6:%.*]] = extractelement <64 x i1> [[TMP5]], i32 0
95; CHECK-NEXT:    [[TMP7:%.*]] = select <64 x i1> [[TMP5]], <64 x i8> <i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2, i8 2>, <64 x i8> <i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1, i8 1>
96; CHECK-NEXT:    [[TMP8:%.*]] = bitcast i8* [[TMP3]] to <64 x i8>*
97; CHECK-NEXT:    call void @llvm.masked.store.v64i8.p0v64i8(<64 x i8> [[TMP7]], <64 x i8>* [[TMP8]], i32 1, <64 x i1> [[TMP2]])
98; CHECK-NEXT:    [[INDEX_NEXT]] = add i32 [[INDEX]], 64
99; CHECK-NEXT:    [[TMP9:%.*]] = icmp eq i32 [[INDEX_NEXT]], 256
100; CHECK-NEXT:    br i1 [[TMP9]], label [[MIDDLE_BLOCK:%.*]], label [[VECTOR_BODY]], !llvm.loop !4
101; CHECK:       middle.block:
102; CHECK-NEXT:    br i1 true, label [[FOR_END:%.*]], label [[SCALAR_PH]]
103; CHECK:       scalar.ph:
104; CHECK-NEXT:    [[BC_RESUME_VAL:%.*]] = phi i32 [ 256, [[MIDDLE_BLOCK]] ], [ 0, [[ENTRY:%.*]] ]
105; CHECK-NEXT:    br label [[FOR_BODY:%.*]]
106; CHECK:       for.body:
107; CHECK-NEXT:    [[I_08:%.*]] = phi i32 [ [[BC_RESUME_VAL]], [[SCALAR_PH]] ], [ [[INC:%.*]], [[FOR_BODY]] ]
108; CHECK-NEXT:    [[ARRAYIDX:%.*]] = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 [[I_08]]
109; CHECK-NEXT:    [[TMP10:%.*]] = load i8, i8* [[ARRAYIDX]], align 1
110; CHECK-NEXT:    [[CMP1:%.*]] = icmp eq i8 [[TMP10]], 0
111; CHECK-NEXT:    [[DOT:%.*]] = select i1 [[CMP1]], i8 2, i8 1
112; CHECK-NEXT:    store i8 [[DOT]], i8* [[ARRAYIDX]], align 1
113; CHECK-NEXT:    [[INC]] = add nsw i32 [[I_08]], 1
114; CHECK-NEXT:    [[EXITCOND:%.*]] = icmp eq i32 [[I_08]], 202
115; CHECK-NEXT:    br i1 [[EXITCOND]], label [[FOR_END]], label [[FOR_BODY]], !llvm.loop !5
116; CHECK:       for.end:
117; CHECK-NEXT:    ret i32 0
118;
119
120entry:
121  br label %for.body
122
123for.body:                                         ; preds = %for.body, %entry
124  %i.08 = phi i32 [ 0, %entry ], [ %inc, %for.body ]
125  %arrayidx = getelementptr inbounds [32 x i8], [32 x i8]* @tab, i32 0, i32 %i.08
126  %0 = load i8, i8* %arrayidx, align 1
127  %cmp1 = icmp eq i8 %0, 0
128  %. = select i1 %cmp1, i8 2, i8 1
129  store i8 %., i8* %arrayidx, align 1
130  %inc = add nsw i32 %i.08, 1
131  %exitcond = icmp eq i32 %i.08, 202
132  br i1 %exitcond, label %for.end, label %for.body
133
134for.end:                                          ; preds = %for.body
135  ret i32 0
136}
137
138attributes #1 = { minsize }
139
140
141; We can't vectorize this one because we version for stride==1; even having TC
142; a multiple of VF.
143; CHECK-LABEL: @scev4stride1
144; CHECK-NOT: vector.scevcheck
145; CHECK-NOT: vector.body:
146; CHECK-LABEL: for.body:
147; AUTOVF-LABEL: @scev4stride1
148; AUTOVF-NOT: vector.scevcheck
149; AUTOVF-NOT: vector.body:
150; AUTOVF-LABEL: for.body:
151define void @scev4stride1(i32* noalias nocapture %a, i32* noalias nocapture readonly %b, i32 %k) #2 {
152for.body.preheader:
153  br label %for.body
154
155for.body:                                         ; preds = %for.body.preheader, %for.body
156  %i.07 = phi i32 [ %inc, %for.body ], [ 0, %for.body.preheader ]
157  %mul = mul nsw i32 %i.07, %k
158  %arrayidx = getelementptr inbounds i32, i32* %b, i32 %mul
159  %0 = load i32, i32* %arrayidx, align 4
160  %arrayidx1 = getelementptr inbounds i32, i32* %a, i32 %i.07
161  store i32 %0, i32* %arrayidx1, align 4
162  %inc = add nuw nsw i32 %i.07, 1
163  %exitcond = icmp eq i32 %inc, 256
164  br i1 %exitcond, label %for.end.loopexit, label %for.body
165
166for.end.loopexit:                                 ; preds = %for.body
167  ret void
168}
169
170attributes #2 = { optsize }
171
172
173; PR39497
174; We can't vectorize this one because we version for overflow check and tiny
175; trip count leads to opt-for-size (which otherwise could fold the tail by
176; masking).
177; CHECK-LABEL: @main
178; CHECK-NOT: vector.scevcheck
179; CHECK-NOT: vector.body:
180; CHECK-LABEL: for.cond:
181; AUTOVF-LABEL: @main
182; AUTOVF-NOT: vector.scevcheck
183; AUTOVF-NOT: vector.body:
184; AUTOVF-LABEL: for.cond:
185define i32 @main() local_unnamed_addr {
186while.cond:
187  br label %for.cond
188
189for.cond:
190  %d.0 = phi i32 [ 0, %while.cond ], [ %add, %for.cond ]
191  %conv = and i32 %d.0, 65535
192  %cmp = icmp ult i32 %conv, 4
193  %add = add nuw nsw i32 %conv, 1
194  br i1 %cmp, label %for.cond, label %while.cond.loopexit
195
196while.cond.loopexit:
197  ret i32 0
198}
199