1 ; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -dce -instcombine -S | FileCheck %s
3 target datalayout = "e-m:e-i64:64-i128:128-n32:64-S128"
4 target triple = "aarch64--linux-gnu"
6 ; CHECK-LABEL: @reduction_i8
8 ; char reduction_i8(char *a, char *b, int n) {
10 ; for (int i = 0; i < n; ++i)
11 ; sum += (a[i] + b[i]);
16 ; CHECK: phi <16 x i8>
17 ; CHECK: load <16 x i8>
18 ; CHECK: load <16 x i8>
19 ; CHECK: add <16 x i8>
20 ; CHECK: add <16 x i8>
22 ; CHECK: middle.block:
23 ; CHECK: shufflevector <16 x i8>
24 ; CHECK: add <16 x i8>
25 ; CHECK: shufflevector <16 x i8>
26 ; CHECK: add <16 x i8>
27 ; CHECK: shufflevector <16 x i8>
28 ; CHECK: add <16 x i8>
29 ; CHECK: shufflevector <16 x i8>
30 ; CHECK: add <16 x i8>
31 ; CHECK: [[Rdx:%[a-zA-Z0-9.]+]] = extractelement <16 x i8>
32 ; CHECK: zext i8 [[Rdx]] to i32
34 define i8 @reduction_i8(i8* nocapture readonly %a, i8* nocapture readonly %b, i32 %n) {
36 %cmp.12 = icmp sgt i32 %n, 0
37 br i1 %cmp.12, label %for.body.preheader, label %for.cond.cleanup
42 for.cond.for.cond.cleanup_crit_edge:
43 %add5.lcssa = phi i32 [ %add5, %for.body ]
44 %conv6 = trunc i32 %add5.lcssa to i8
45 br label %for.cond.cleanup
48 %sum.0.lcssa = phi i8 [ %conv6, %for.cond.for.cond.cleanup_crit_edge ], [ 0, %entry ]
52 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
53 %sum.013 = phi i32 [ %add5, %for.body ], [ 0, %for.body.preheader ]
54 %arrayidx = getelementptr inbounds i8, i8* %a, i64 %indvars.iv
55 %0 = load i8, i8* %arrayidx, align 1
56 %conv = zext i8 %0 to i32
57 %arrayidx2 = getelementptr inbounds i8, i8* %b, i64 %indvars.iv
58 %1 = load i8, i8* %arrayidx2, align 1
59 %conv3 = zext i8 %1 to i32
60 %conv4 = and i32 %sum.013, 255
61 %add = add nuw nsw i32 %conv, %conv4
62 %add5 = add nuw nsw i32 %add, %conv3
63 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
64 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
65 %exitcond = icmp eq i32 %lftr.wideiv, %n
66 br i1 %exitcond, label %for.cond.for.cond.cleanup_crit_edge, label %for.body
69 ; CHECK-LABEL: @reduction_i16
71 ; short reduction_i16(short *a, short *b, int n) {
73 ; for (int i = 0; i < n; ++i)
74 ; sum += (a[i] + b[i]);
79 ; CHECK: phi <8 x i16>
80 ; CHECK: load <8 x i16>
81 ; CHECK: load <8 x i16>
82 ; CHECK: add <8 x i16>
83 ; CHECK: add <8 x i16>
85 ; CHECK: middle.block:
86 ; CHECK: shufflevector <8 x i16>
87 ; CHECK: add <8 x i16>
88 ; CHECK: shufflevector <8 x i16>
89 ; CHECK: add <8 x i16>
90 ; CHECK: shufflevector <8 x i16>
91 ; CHECK: add <8 x i16>
92 ; CHECK: [[Rdx:%[a-zA-Z0-9.]+]] = extractelement <8 x i16>
93 ; CHECK: zext i16 [[Rdx]] to i32
95 define i16 @reduction_i16(i16* nocapture readonly %a, i16* nocapture readonly %b, i32 %n) {
97 %cmp.16 = icmp sgt i32 %n, 0
98 br i1 %cmp.16, label %for.body.preheader, label %for.cond.cleanup
103 for.cond.for.cond.cleanup_crit_edge:
104 %add5.lcssa = phi i32 [ %add5, %for.body ]
105 %conv6 = trunc i32 %add5.lcssa to i16
106 br label %for.cond.cleanup
109 %sum.0.lcssa = phi i16 [ %conv6, %for.cond.for.cond.cleanup_crit_edge ], [ 0, %entry ]
113 %indvars.iv = phi i64 [ %indvars.iv.next, %for.body ], [ 0, %for.body.preheader ]
114 %sum.017 = phi i32 [ %add5, %for.body ], [ 0, %for.body.preheader ]
115 %arrayidx = getelementptr inbounds i16, i16* %a, i64 %indvars.iv
116 %0 = load i16, i16* %arrayidx, align 2
117 %conv.14 = zext i16 %0 to i32
118 %arrayidx2 = getelementptr inbounds i16, i16* %b, i64 %indvars.iv
119 %1 = load i16, i16* %arrayidx2, align 2
120 %conv3.15 = zext i16 %1 to i32
121 %conv4.13 = and i32 %sum.017, 65535
122 %add = add nuw nsw i32 %conv.14, %conv4.13
123 %add5 = add nuw nsw i32 %add, %conv3.15
124 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
125 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
126 %exitcond = icmp eq i32 %lftr.wideiv, %n
127 br i1 %exitcond, label %for.cond.for.cond.cleanup_crit_edge, label %for.body