1; RUN: opt < %s -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S |FileCheck %s
2; SCEV expansion uses existing value or value + offset to reduce duplicate code expansion so foo should only generate one select inst after loop vectorization.
3; CHECK-LABEL: @foo(
4; CHECK: select
5; CHECK-NOT: select
6
7@ySrcL = common global i8* null, align 8
8@smL = common global i32 0, align 4
9
10define void @foo(i32 %rwL, i32 %kL, i32 %xfL) {
11entry:
12  %sub = add nsw i32 %rwL, -1
13  %shr = ashr i32 %xfL, 6
14  %cmp.i = icmp slt i32 %sub, %shr
15  %cond.i = select i1 %cmp.i, i32 %sub, i32 %shr
16  %cmp6 = icmp sgt i32 %cond.i, %kL
17  br i1 %cmp6, label %for.body.lr.ph, label %for.end
18
19for.body.lr.ph:                                   ; preds = %entry
20  %tmp = load i8*, i8** @ySrcL, align 8
21  %tmp1 = sext i32 %kL to i64
22  %tmp2 = sext i32 %cond.i to i64
23  br label %for.body
24
25for.body:                                         ; preds = %for.body, %for.body.lr.ph
26  %indvars.iv = phi i64 [ %tmp1, %for.body.lr.ph ], [ %indvars.iv.next, %for.body ]
27  %reduct.07 = phi i32 [ 0, %for.body.lr.ph ], [ %add, %for.body ]
28  %arrayidx = getelementptr inbounds i8, i8* %tmp, i64 %indvars.iv
29  %tmp3 = load i8, i8* %arrayidx, align 1
30  %conv = zext i8 %tmp3 to i32
31  %add = add nsw i32 %conv, %reduct.07
32  %indvars.iv.next = add nsw i64 %indvars.iv, 1
33  %cmp = icmp slt i64 %indvars.iv.next, %tmp2
34  br i1 %cmp, label %for.body, label %for.end.loopexit
35
36for.end.loopexit:                                 ; preds = %for.body
37  %add.lcssa = phi i32 [ %add, %for.body ]
38  br label %for.end
39
40for.end:                                          ; preds = %for.end.loopexit, %entry
41  %reduct.0.lcssa = phi i32 [ 0, %entry ], [ %add.lcssa, %for.end.loopexit ]
42  store i32 %reduct.0.lcssa, i32* @smL, align 4
43  ret void
44}
45