1; RUN: opt -passes=loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -S %s | FileCheck --check-prefix=VF4 %s
2; RUN: opt -passes=loop-vectorize -force-vector-interleave=2 -force-vector-width=1 -S %s | FileCheck --check-prefix=IC2 %s
3
4; rdar://problem/12848162
5
6target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64-S128"
7
8@a = common global [2048 x i32] zeroinitializer, align 16
9
10define void @example12() {
11; VF4-LABEL: @example12(
12; VF4-LABEL: vector.body:
13; VF4: [[VEC_IND:%.+]] = phi <4 x i32>
14; VF4: store <4 x i32> [[VEC_IND]]
15; VF4: middle.block:
16;
17; IC2-LABEL: @example12(
18; IC2-LABEL: vector.body:
19; IC2-NEXT:   [[INDEX:%.+]] = phi i64 [ 0, %vector.ph ]
20; IC2-NEXT:   [[TRUNC:%.+]] = trunc i64 [[INDEX]] to i32
21; IC2-NEXT:   [[TRUNC0:%.+]] = add i32 [[TRUNC]], 0
22; IC2-NEXT:   [[TRUNC1:%.+]] = add i32 [[TRUNC]], 1
23; IC2:        store i32 [[TRUNC0]],
24; IC2-NEXT:   store i32 [[TRUNC1]],
25;
26entry:
27  br label %loop
28
29loop:
30  %iv = phi i64 [ 0, %entry ], [ %iv.next, %loop ]
31  %gep = getelementptr inbounds [2048 x i32], [2048 x i32]* @a, i64 0, i64 %iv
32  %iv.trunc = trunc i64 %iv to i32
33  store i32 %iv.trunc, i32* %gep, align 4
34  %iv.next = add i64 %iv, 1
35  %iv.next.trunc = trunc i64 %iv.next to i32
36  %exitcond = icmp eq i32 %iv.next.trunc, 1024
37  br i1 %exitcond, label %exit, label %loop
38
39exit:
40  ret void
41}
42
43