1 ; RUN: opt -slp-vectorizer -slp-threshold=-6 -slp-vectorize-hor -S < %s | FileCheck %s
3 ; FIXME: The threshold is changed to keep this test case a bit smaller.
4 ; The AArch64 cost model should not give such high costs to select statements.
6 target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
7 target triple = "aarch64--linux"
9 ; CHECK-LABEL: test_select
10 ; CHECK: load <4 x i32>
11 ; CHECK: load <4 x i32>
12 ; CHECK: select <4 x i1>
13 define i32 @test_select(i32* noalias nocapture readonly %blk1, i32* noalias nocapture readonly %blk2, i32 %lx, i32 %h) {
15 %cmp.22 = icmp sgt i32 %h, 0
16 br i1 %cmp.22, label %for.body.lr.ph, label %for.end
18 for.body.lr.ph: ; preds = %entry
19 %idx.ext = sext i32 %lx to i64
22 for.body: ; preds = %for.body, %for.body.lr.ph
23 %s.026 = phi i32 [ 0, %for.body.lr.ph ], [ %add27, %for.body ]
24 %j.025 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %for.body ]
25 %p2.024 = phi i32* [ %blk2, %for.body.lr.ph ], [ %add.ptr29, %for.body ]
26 %p1.023 = phi i32* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %for.body ]
27 %0 = load i32, i32* %p1.023, align 4
28 %1 = load i32, i32* %p2.024, align 4
29 %sub = sub nsw i32 %0, %1
30 %cmp2 = icmp slt i32 %sub, 0
31 %sub3 = sub nsw i32 0, %sub
32 %sub3.sub = select i1 %cmp2, i32 %sub3, i32 %sub
33 %add = add nsw i32 %sub3.sub, %s.026
34 %arrayidx4 = getelementptr inbounds i32, i32* %p1.023, i64 1
35 %2 = load i32, i32* %arrayidx4, align 4
36 %arrayidx5 = getelementptr inbounds i32, i32* %p2.024, i64 1
37 %3 = load i32, i32* %arrayidx5, align 4
38 %sub6 = sub nsw i32 %2, %3
39 %cmp7 = icmp slt i32 %sub6, 0
40 %sub9 = sub nsw i32 0, %sub6
41 %v.1 = select i1 %cmp7, i32 %sub9, i32 %sub6
42 %add11 = add nsw i32 %add, %v.1
43 %arrayidx12 = getelementptr inbounds i32, i32* %p1.023, i64 2
44 %4 = load i32, i32* %arrayidx12, align 4
45 %arrayidx13 = getelementptr inbounds i32, i32* %p2.024, i64 2
46 %5 = load i32, i32* %arrayidx13, align 4
47 %sub14 = sub nsw i32 %4, %5
48 %cmp15 = icmp slt i32 %sub14, 0
49 %sub17 = sub nsw i32 0, %sub14
50 %sub17.sub14 = select i1 %cmp15, i32 %sub17, i32 %sub14
51 %add19 = add nsw i32 %add11, %sub17.sub14
52 %arrayidx20 = getelementptr inbounds i32, i32* %p1.023, i64 3
53 %6 = load i32, i32* %arrayidx20, align 4
54 %arrayidx21 = getelementptr inbounds i32, i32* %p2.024, i64 3
55 %7 = load i32, i32* %arrayidx21, align 4
56 %sub22 = sub nsw i32 %6, %7
57 %cmp23 = icmp slt i32 %sub22, 0
58 %sub25 = sub nsw i32 0, %sub22
59 %v.3 = select i1 %cmp23, i32 %sub25, i32 %sub22
60 %add27 = add nsw i32 %add19, %v.3
61 %add.ptr = getelementptr inbounds i32, i32* %p1.023, i64 %idx.ext
62 %add.ptr29 = getelementptr inbounds i32, i32* %p2.024, i64 %idx.ext
63 %inc = add nuw nsw i32 %j.025, 1
64 %exitcond = icmp eq i32 %inc, %h
65 br i1 %exitcond, label %for.end.loopexit, label %for.body
67 for.end.loopexit: ; preds = %for.body
70 for.end: ; preds = %for.end.loopexit, %entry
71 %s.0.lcssa = phi i32 [ 0, %entry ], [ %add27, %for.end.loopexit ]
75 ;; Check whether SLP can find a reduction phi whose incoming blocks are not
76 ;; the same as the block containing the phi.
78 ;; Came from code like,
81 ;; for (int j = 0; j < h; j++) {
83 ;; s += p1[1] * p2[1];
84 ;; s += p1[2] * p2[2];
85 ;; s += p1[3] * p2[3];
91 define i32 @reduction_with_br(i32* noalias nocapture readonly %blk1, i32* noalias nocapture readonly %blk2, i32 %lx, i32 %h, i32 %lim) {
92 ; CHECK-LABEL: reduction_with_br
93 ; CHECK: load <4 x i32>
94 ; CHECK: load <4 x i32>
95 ; CHECK: mul nsw <4 x i32>
97 %cmp.16 = icmp sgt i32 %h, 0
98 br i1 %cmp.16, label %for.body.lr.ph, label %for.end
100 for.body.lr.ph: ; preds = %entry
101 %idx.ext = sext i32 %lx to i64
104 for.body: ; preds = %for.body.lr.ph, %if.end
105 %s.020 = phi i32 [ 0, %for.body.lr.ph ], [ %add13, %if.end ]
106 %j.019 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %if.end ]
107 %p2.018 = phi i32* [ %blk2, %for.body.lr.ph ], [ %add.ptr16, %if.end ]
108 %p1.017 = phi i32* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %if.end ]
109 %0 = load i32, i32* %p1.017, align 4
110 %1 = load i32, i32* %p2.018, align 4
111 %mul = mul nsw i32 %1, %0
112 %add = add nsw i32 %mul, %s.020
113 %arrayidx2 = getelementptr inbounds i32, i32* %p1.017, i64 1
114 %2 = load i32, i32* %arrayidx2, align 4
115 %arrayidx3 = getelementptr inbounds i32, i32* %p2.018, i64 1
116 %3 = load i32, i32* %arrayidx3, align 4
117 %mul4 = mul nsw i32 %3, %2
118 %add5 = add nsw i32 %add, %mul4
119 %arrayidx6 = getelementptr inbounds i32, i32* %p1.017, i64 2
120 %4 = load i32, i32* %arrayidx6, align 4
121 %arrayidx7 = getelementptr inbounds i32, i32* %p2.018, i64 2
122 %5 = load i32, i32* %arrayidx7, align 4
123 %mul8 = mul nsw i32 %5, %4
124 %add9 = add nsw i32 %add5, %mul8
125 %arrayidx10 = getelementptr inbounds i32, i32* %p1.017, i64 3
126 %6 = load i32, i32* %arrayidx10, align 4
127 %arrayidx11 = getelementptr inbounds i32, i32* %p2.018, i64 3
128 %7 = load i32, i32* %arrayidx11, align 4
129 %mul12 = mul nsw i32 %7, %6
130 %add13 = add nsw i32 %add9, %mul12
131 %cmp14 = icmp slt i32 %add13, %lim
132 br i1 %cmp14, label %if.end, label %for.end.loopexit
134 if.end: ; preds = %for.body
135 %add.ptr = getelementptr inbounds i32, i32* %p1.017, i64 %idx.ext
136 %add.ptr16 = getelementptr inbounds i32, i32* %p2.018, i64 %idx.ext
137 %inc = add nuw nsw i32 %j.019, 1
138 %cmp = icmp slt i32 %inc, %h
139 br i1 %cmp, label %for.body, label %for.end.loopexit
141 for.end.loopexit: ; preds = %for.body, %if.end
144 for.end: ; preds = %for.end.loopexit, %entry
145 %s.1 = phi i32 [ 0, %entry ], [ %add13, %for.end.loopexit ]
149 ; CHECK: test_unrolled_select
150 ; CHECK: load <8 x i8>
151 ; CHECK: load <8 x i8>
152 ; CHECK: select <8 x i1>
153 define i32 @test_unrolled_select(i8* noalias nocapture readonly %blk1, i8* noalias nocapture readonly %blk2, i32 %lx, i32 %h, i32 %lim) #0 {
155 %cmp.43 = icmp sgt i32 %h, 0
156 br i1 %cmp.43, label %for.body.lr.ph, label %for.end
158 for.body.lr.ph: ; preds = %entry
159 %idx.ext = sext i32 %lx to i64
162 for.body: ; preds = %for.body.lr.ph, %if.end.86
163 %s.047 = phi i32 [ 0, %for.body.lr.ph ], [ %add82, %if.end.86 ]
164 %j.046 = phi i32 [ 0, %for.body.lr.ph ], [ %inc, %if.end.86 ]
165 %p2.045 = phi i8* [ %blk2, %for.body.lr.ph ], [ %add.ptr88, %if.end.86 ]
166 %p1.044 = phi i8* [ %blk1, %for.body.lr.ph ], [ %add.ptr, %if.end.86 ]
167 %0 = load i8, i8* %p1.044, align 1
168 %conv = zext i8 %0 to i32
169 %1 = load i8, i8* %p2.045, align 1
170 %conv2 = zext i8 %1 to i32
171 %sub = sub nsw i32 %conv, %conv2
172 %cmp3 = icmp slt i32 %sub, 0
173 %sub5 = sub nsw i32 0, %sub
174 %sub5.sub = select i1 %cmp3, i32 %sub5, i32 %sub
175 %add = add nsw i32 %sub5.sub, %s.047
176 %arrayidx6 = getelementptr inbounds i8, i8* %p1.044, i64 1
177 %2 = load i8, i8* %arrayidx6, align 1
178 %conv7 = zext i8 %2 to i32
179 %arrayidx8 = getelementptr inbounds i8, i8* %p2.045, i64 1
180 %3 = load i8, i8* %arrayidx8, align 1
181 %conv9 = zext i8 %3 to i32
182 %sub10 = sub nsw i32 %conv7, %conv9
183 %cmp11 = icmp slt i32 %sub10, 0
184 %sub14 = sub nsw i32 0, %sub10
185 %v.1 = select i1 %cmp11, i32 %sub14, i32 %sub10
186 %add16 = add nsw i32 %add, %v.1
187 %arrayidx17 = getelementptr inbounds i8, i8* %p1.044, i64 2
188 %4 = load i8, i8* %arrayidx17, align 1
189 %conv18 = zext i8 %4 to i32
190 %arrayidx19 = getelementptr inbounds i8, i8* %p2.045, i64 2
191 %5 = load i8, i8* %arrayidx19, align 1
192 %conv20 = zext i8 %5 to i32
193 %sub21 = sub nsw i32 %conv18, %conv20
194 %cmp22 = icmp slt i32 %sub21, 0
195 %sub25 = sub nsw i32 0, %sub21
196 %sub25.sub21 = select i1 %cmp22, i32 %sub25, i32 %sub21
197 %add27 = add nsw i32 %add16, %sub25.sub21
198 %arrayidx28 = getelementptr inbounds i8, i8* %p1.044, i64 3
199 %6 = load i8, i8* %arrayidx28, align 1
200 %conv29 = zext i8 %6 to i32
201 %arrayidx30 = getelementptr inbounds i8, i8* %p2.045, i64 3
202 %7 = load i8, i8* %arrayidx30, align 1
203 %conv31 = zext i8 %7 to i32
204 %sub32 = sub nsw i32 %conv29, %conv31
205 %cmp33 = icmp slt i32 %sub32, 0
206 %sub36 = sub nsw i32 0, %sub32
207 %v.3 = select i1 %cmp33, i32 %sub36, i32 %sub32
208 %add38 = add nsw i32 %add27, %v.3
209 %arrayidx39 = getelementptr inbounds i8, i8* %p1.044, i64 4
210 %8 = load i8, i8* %arrayidx39, align 1
211 %conv40 = zext i8 %8 to i32
212 %arrayidx41 = getelementptr inbounds i8, i8* %p2.045, i64 4
213 %9 = load i8, i8* %arrayidx41, align 1
214 %conv42 = zext i8 %9 to i32
215 %sub43 = sub nsw i32 %conv40, %conv42
216 %cmp44 = icmp slt i32 %sub43, 0
217 %sub47 = sub nsw i32 0, %sub43
218 %sub47.sub43 = select i1 %cmp44, i32 %sub47, i32 %sub43
219 %add49 = add nsw i32 %add38, %sub47.sub43
220 %arrayidx50 = getelementptr inbounds i8, i8* %p1.044, i64 5
221 %10 = load i8, i8* %arrayidx50, align 1
222 %conv51 = zext i8 %10 to i32
223 %arrayidx52 = getelementptr inbounds i8, i8* %p2.045, i64 5
224 %11 = load i8, i8* %arrayidx52, align 1
225 %conv53 = zext i8 %11 to i32
226 %sub54 = sub nsw i32 %conv51, %conv53
227 %cmp55 = icmp slt i32 %sub54, 0
228 %sub58 = sub nsw i32 0, %sub54
229 %v.5 = select i1 %cmp55, i32 %sub58, i32 %sub54
230 %add60 = add nsw i32 %add49, %v.5
231 %arrayidx61 = getelementptr inbounds i8, i8* %p1.044, i64 6
232 %12 = load i8, i8* %arrayidx61, align 1
233 %conv62 = zext i8 %12 to i32
234 %arrayidx63 = getelementptr inbounds i8, i8* %p2.045, i64 6
235 %13 = load i8, i8* %arrayidx63, align 1
236 %conv64 = zext i8 %13 to i32
237 %sub65 = sub nsw i32 %conv62, %conv64
238 %cmp66 = icmp slt i32 %sub65, 0
239 %sub69 = sub nsw i32 0, %sub65
240 %sub69.sub65 = select i1 %cmp66, i32 %sub69, i32 %sub65
241 %add71 = add nsw i32 %add60, %sub69.sub65
242 %arrayidx72 = getelementptr inbounds i8, i8* %p1.044, i64 7
243 %14 = load i8, i8* %arrayidx72, align 1
244 %conv73 = zext i8 %14 to i32
245 %arrayidx74 = getelementptr inbounds i8, i8* %p2.045, i64 7
246 %15 = load i8, i8* %arrayidx74, align 1
247 %conv75 = zext i8 %15 to i32
248 %sub76 = sub nsw i32 %conv73, %conv75
249 %cmp77 = icmp slt i32 %sub76, 0
250 %sub80 = sub nsw i32 0, %sub76
251 %v.7 = select i1 %cmp77, i32 %sub80, i32 %sub76
252 %add82 = add nsw i32 %add71, %v.7
253 %cmp83 = icmp slt i32 %add82, %lim
254 br i1 %cmp83, label %if.end.86, label %for.end.loopexit
256 if.end.86: ; preds = %for.body
257 %add.ptr = getelementptr inbounds i8, i8* %p1.044, i64 %idx.ext
258 %add.ptr88 = getelementptr inbounds i8, i8* %p2.045, i64 %idx.ext
259 %inc = add nuw nsw i32 %j.046, 1
260 %cmp = icmp slt i32 %inc, %h
261 br i1 %cmp, label %for.body, label %for.end.loopexit
263 for.end.loopexit: ; preds = %for.body, %if.end.86
266 for.end: ; preds = %for.end.loopexit, %entry
267 %s.1 = phi i32 [ 0, %entry ], [ %add82, %for.end.loopexit ]