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1; RUN: opt < %s  -loop-vectorize -force-vector-interleave=1 -force-vector-width=4 -dce -instcombine -S | FileCheck %s
2
3target 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"
4target triple = "x86_64-apple-macosx10.8.0"
5
6;CHECK-LABEL: @read_only_func(
7;CHECK: load <4 x i32>
8;CHECK: ret i32
9define i32 @read_only_func(i32* nocapture %A, i32* nocapture %B, i32 %n) nounwind uwtable readonly ssp {
10  %1 = icmp sgt i32 %n, 0
11  br i1 %1, label %.lr.ph, label %._crit_edge
12
13.lr.ph:                                           ; preds = %0, %.lr.ph
14  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]
15  %sum.02 = phi i32 [ %9, %.lr.ph ], [ 0, %0 ]
16  %2 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
17  %3 = load i32, i32* %2, align 4
18  %4 = add nsw i64 %indvars.iv, 13
19  %5 = getelementptr inbounds i32, i32* %B, i64 %4
20  %6 = load i32, i32* %5, align 4
21  %7 = shl i32 %6, 1
22  %8 = add i32 %3, %sum.02
23  %9 = add i32 %8, %7
24  %indvars.iv.next = add i64 %indvars.iv, 1
25  %lftr.wideiv = trunc i64 %indvars.iv.next to i32
26  %exitcond = icmp eq i32 %lftr.wideiv, %n
27  br i1 %exitcond, label %._crit_edge, label %.lr.ph
28
29._crit_edge:                                      ; preds = %.lr.ph, %0
30  %sum.0.lcssa = phi i32 [ 0, %0 ], [ %9, %.lr.ph ]
31  ret i32 %sum.0.lcssa
32}
33