1; RUN: opt < %s -force-vector-width=4 -force-vector-interleave=1 -loop-vectorize -S | FileCheck %s
2
3target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
4
5; CHECK-LABEL: @PR34687(
6; CHECK:       vector.body:
7; CHECK-NEXT:    [[INDEX:%.*]] = phi i32 [ 0, %vector.ph ], [ [[INDEX_NEXT:%.*]], %[[LATCH:.*]] ]
8; CHECK-NEXT:    [[VEC_PHI:%.*]] = phi <4 x i32> [ zeroinitializer, %vector.ph ], [ [[TMP17:%.*]], %[[LATCH]] ]
9; CHECK:       [[LATCH]]:
10; CHECK:         [[TMP13:%.*]] = and <4 x i32> [[VEC_PHI]], <i32 255, i32 255, i32 255, i32 255>
11; CHECK-NEXT:    [[TMP14:%.*]] = add nuw nsw <4 x i32> [[TMP13]], {{.*}}
12; CHECK-NEXT:    [[INDEX_NEXT]] = add i32 [[INDEX]], 4
13; CHECK:         [[TMP16:%.*]] = trunc <4 x i32> [[TMP14]] to <4 x i8>
14; CHECK-NEXT:    [[TMP17]] = zext <4 x i8> [[TMP16]] to <4 x i32>
15; CHECK-NEXT:    br i1 {{.*}}, label %middle.block, label %vector.body
16;
17define void @PR34687(i1 %c, i32 %x, i32 %n) {
18entry:
19  br label %for.body
20
21for.body:
22  %i = phi i32 [ 0, %entry ], [ %i.next, %if.end ]
23  %r = phi i32 [ 0, %entry ], [ %r.next, %if.end ]
24  br i1 %c, label %if.then, label %if.end
25
26if.then:
27  %tmp0 = sdiv i32 undef, undef
28  br label %if.end
29
30if.end:
31  %tmp1 = and i32 %r, 255
32  %i.next = add nsw i32 %i, 1
33  %r.next = add nuw nsw i32 %tmp1, %x
34  %cond = icmp eq i32 %i.next, %n
35  br i1 %cond, label %for.end, label %for.body
36
37for.end:
38  %tmp2 = phi i32 [ %r.next, %if.end ]
39  ret void
40}
41