1 ; RUN: opt < %s -loop-accesses -analyze | FileCheck %s
3 ; Test to confirm LAA will find store to invariant address.
4 ; Inner loop has a store to invariant address.
6 ; for(; i < itr; i++) {
7 ; for(; j < itr; j++) {
8 ; var1[i] = var2[j] + var1[i];
12 ; CHECK: Store to invariant address was found in loop.
13 ; CHECK-NOT: Store to invariant address was not found in loop.
15 define i32 @foo(i32* nocapture %var1, i32* nocapture readonly %var2, i32 %itr) #0 {
17 %cmp20 = icmp eq i32 %itr, 0
18 br i1 %cmp20, label %for.end10, label %for.cond1.preheader
20 for.cond1.preheader: ; preds = %entry, %for.inc8
21 %indvars.iv23 = phi i64 [ %indvars.iv.next24, %for.inc8 ], [ 0, %entry ]
22 %j.022 = phi i32 [ %j.1.lcssa, %for.inc8 ], [ 0, %entry ]
23 %cmp218 = icmp ult i32 %j.022, %itr
24 br i1 %cmp218, label %for.body3.lr.ph, label %for.inc8
26 for.body3.lr.ph: ; preds = %for.cond1.preheader
27 %arrayidx5 = getelementptr inbounds i32, i32* %var1, i64 %indvars.iv23
28 %0 = zext i32 %j.022 to i64
31 for.body3: ; preds = %for.body3, %for.body3.lr.ph
32 %indvars.iv = phi i64 [ %0, %for.body3.lr.ph ], [ %indvars.iv.next, %for.body3 ]
33 %arrayidx = getelementptr inbounds i32, i32* %var2, i64 %indvars.iv
34 %1 = load i32, i32* %arrayidx, align 4
35 %2 = load i32, i32* %arrayidx5, align 4
36 %add = add nsw i32 %2, %1
37 store i32 %add, i32* %arrayidx5, align 4
38 %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
39 %lftr.wideiv = trunc i64 %indvars.iv.next to i32
40 %exitcond = icmp eq i32 %lftr.wideiv, %itr
41 br i1 %exitcond, label %for.inc8, label %for.body3
43 for.inc8: ; preds = %for.body3, %for.cond1.preheader
44 %j.1.lcssa = phi i32 [ %j.022, %for.cond1.preheader ], [ %itr, %for.body3 ]
45 %indvars.iv.next24 = add nuw nsw i64 %indvars.iv23, 1
46 %lftr.wideiv25 = trunc i64 %indvars.iv.next24 to i32
47 %exitcond26 = icmp eq i32 %lftr.wideiv25, %itr
48 br i1 %exitcond26, label %for.end10, label %for.cond1.preheader
50 for.end10: ; preds = %for.inc8, %entry