1 ; RUN: opt -S -loop-vectorize -force-vector-unroll=1 -force-vector-width=2 < %s | FileCheck %s
3 target 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"
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
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".
16 ; CHECK-NOT: <2 x i32>
20 %b.promoted = load i32* @b, align 4
24 %tmp8 = phi i32 [ %tmp18, %bb16 ], [ %b.promoted, %bb ]
25 %tmp2 = icmp sgt i32 %tmp8, 10
26 br i1 %tmp2, label %bb16, label %bb10
32 %tmp17 = phi i32 [ 0, %bb10 ], [ 1, %.lr.ph.i ]
33 %tmp18 = add nsw i32 %tmp8, 1
34 %tmp19 = icmp slt i32 %tmp18, 4
35 br i1 %tmp19, label %.lr.ph.i, label %f1.exit.loopexit
38 %.lcssa = phi i32 [ %tmp17, %bb16 ]
42 ; Don't vectorize this loop. Its phi node (induction variable) has an outside
43 ; loop user. We currently don't handle this case.
46 ; CHECK-LABEL: @test2(
49 @x1 = common global i32 0, align 4
50 @x2 = common global i32 0, align 4
51 @x0 = common global i32 0, align 4
55 store i32 0, i32* @x1, align 4
56 %0 = load i32* @x0, align 4
57 br label %for.cond1.preheader
60 %inc7 = phi i32 [ 0, %entry ], [ %inc, %for.cond1.preheader ]
61 %inc = add nsw i32 %inc7, 1
62 %cmp = icmp eq i32 %inc, 52
63 br i1 %cmp, label %for.end5, label %for.cond1.preheader
66 %inc7.lcssa = phi i32 [ %inc7, %for.cond1.preheader ]
67 %xor = xor i32 %inc7.lcssa, %0
68 store i32 52, i32* @x1, align 4
69 store i32 1, i32* @x2, align 4