1; REQUIRES: asserts
2; RUN: opt < %s -loop-vectorize -mcpu=core-axv2 -force-vector-interleave=1 -dce -instcombine -debug-only=loop-vectorize -S < %s 2>&1  | FileCheck %s
3
4target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
5
6; Make sure we ignore the costs of the redundant reduction casts
7; char reduction_i8(char *a, char *b, int n) {
8;   char sum = 0;
9;   for (int i = 0; i < n; ++i)
10;     sum += (a[i] + b[i]);
11;   return sum;
12; }
13;
14
15; CHECK-LABEL: reduction_i8
16; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = phi
17; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = phi
18; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = getelementptr
19; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = load
20; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = zext i8 %{{.*}} to i32
21; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = getelementptr
22; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = load
23; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = zext i8 %{{.*}} to i32
24; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = and i32 %{{.*}}, 255
25; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = add
26; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = add
27; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = add
28; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = trunc
29; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   %{{.*}} = icmp
30; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 1 For instruction:   br
31; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = phi
32; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = phi
33; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = getelementptr
34; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = load
35; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = zext i8 %{{.*}} to i32
36; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = getelementptr
37; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = load
38; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = zext i8 %{{.*}} to i32
39; CHECK-NOT: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = and i32 %{{.*}}, 255
40; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = add
41; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = add
42; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = add
43; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = trunc
44; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   %{{.*}} = icmp
45; CHECK: LV: Found an estimated cost of {{[0-9]+}} for VF 2 For instruction:   br
46;
47define i8 @reduction_i8(i8* nocapture readonly %a, i8* nocapture readonly %b, i32 %n) {
48entry:
49  %cmp.12 = icmp sgt i32 %n, 0
50  br i1 %cmp.12, label %for.body.preheader, label %for.cond.cleanup
51
52for.body.preheader:
53  br label %for.body
54
55for.cond.for.cond.cleanup_crit_edge:
56  %add5.lcssa = phi i32 [ %add5, %for.body ]
57  %conv6 = trunc i32 %add5.lcssa to i8
58  br label %for.cond.cleanup
59
60for.cond.cleanup:
61  %sum.0.lcssa = phi i8 [ %conv6, %for.cond.for.cond.cleanup_crit_edge ], [ 0, %entry ]
62  ret i8 %sum.0.lcssa
63
64for.body:
65  %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
66  %sum.013 = phi i32 [ %add5, %for.body ], [ 0, %for.body.preheader ]
67  %arrayidx = getelementptr inbounds i8, i8* %a, i64 %indvars.iv
68  %0 = load i8, i8* %arrayidx, align 1
69  %conv = zext i8 %0 to i32
70  %arrayidx2 = getelementptr inbounds i8, i8* %b, i64 %indvars.iv
71  %1 = load i8, i8* %arrayidx2, align 1
72  %conv3 = zext i8 %1 to i32
73  %conv4 = and i32 %sum.013, 255
74  %add = add nuw nsw i32 %conv, %conv4
75  %add5 = add nuw nsw i32 %add, %conv3
76  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
77  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
78  %exitcond = icmp eq i32 %lftr.wideiv, %n
79  br i1 %exitcond, label %for.cond.for.cond.cleanup_crit_edge, label %for.body
80}
81