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1; RUN: opt < %s -passes=loop-vectorize,dce,instcombine -force-vector-width=4 -force-vector-interleave=2 -S | FileCheck %s2 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"4 5@a = common global [2048 x i32] zeroinitializer, align 166 7; This is the loop.8; for (i=0; i<n; i++){9; a[i] += i;10; }11;CHECK-LABEL: @inc(12;CHECK: load <4 x i32>13;CHECK: load <4 x i32>14;CHECK: add nsw <4 x i32>15;CHECK: add nsw <4 x i32>16;CHECK: store <4 x i32>17;CHECK: store <4 x i32>18;CHECK: ret void19define void @inc(i32 %n) nounwind uwtable noinline ssp {20 %1 = icmp sgt i32 %n, 021 br i1 %1, label %.lr.ph, label %._crit_edge22 23.lr.ph: ; preds = %0, %.lr.ph24 %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %0 ]25 %2 = getelementptr inbounds [2048 x i32], ptr @a, i64 0, i64 %indvars.iv26 %3 = load i32, ptr %2, align 427 %4 = trunc i64 %indvars.iv to i3228 %5 = add nsw i32 %3, %429 store i32 %5, ptr %2, align 430 %indvars.iv.next = add i64 %indvars.iv, 131 %lftr.wideiv = trunc i64 %indvars.iv.next to i3232 %exitcond = icmp eq i32 %lftr.wideiv, %n33 br i1 %exitcond, label %._crit_edge, label %.lr.ph34 35._crit_edge: ; preds = %.lr.ph, %036 ret void37}38 39