1; RUN: opt -S -loop-vectorize -force-vector-unroll=1 -force-vector-width=2 < %s | FileCheck %s
2
3target datalayout = "e-p:32:32:32-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:32:64-f32:32:32-f64:32:64-v64:64:64-v128:128:128-a0:0:64-f80:32:32-n8:16:32-S128"
4
5@f = common global i32 0, align 4
6@.str = private unnamed_addr constant [4 x i8] c"%d\0A\00", align 1
7@c = common global i32 0, align 4
8@a = common global i32 0, align 4
9@b = common global i32 0, align 4
10@e = common global i32 0, align 4
11
12; We used to vectorize this loop. But it has a value that is used outside of the
13; and is not a recognized reduction variable "tmp17".
14
15; CHECK-NOT: <2 x i32>
16
17define i32 @main()  {
18bb:
19  %b.promoted = load i32* @b, align 4
20  br label %.lr.ph.i
21
22.lr.ph.i:
23  %tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
24  %tmp2 = icmp sgt i32 %tmp8, 10
25  br i1 %tmp2, label %bb16, label %bb10
26
27bb10:
28  br label %bb16
29
30bb16:
31  %tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ]
32  %tmp18 = add nsw i32 %tmp8, 1
33  %tmp19 = icmp slt i32 %tmp18, 4
34  br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
35
36f1.exit.loopexit:
37  %.lcssa = phi i32 [ %tmp17, %bb16 ]
38  ret i32 %.lcssa
39}
40
41
42