1; RUN: opt < %s -analyze -delinearize | FileCheck %s
2
3; Derived from the following code:
4;
5; void foo(long n, long m, double A[n][m]) {
6;   for (long i = 0; i < n; i++)
7;     for (long j = 0; j < m; j++)
8;       A[i][j] = 1.0;
9; }
10
11; Inst:  %val = load double, double* %arrayidx
12; In Loop with Header: for.j
13; AddRec: {{0,+,(%m * 8)}<%for.i>,+,8}<%for.j>
14; Base offset: %A
15; ArrayDecl[UnknownSize][%m] with elements of 8 bytes.
16; ArrayRef[{0,+,1}<nuw><nsw><%for.i>][{0,+,1}<nuw><nsw><%for.j>]
17
18; Inst:  store double %val, double* %arrayidx
19; In Loop with Header: for.j
20; AddRec: {{%A,+,(8 * %m)}<%for.i>,+,8}<%for.j>
21; CHECK: Base offset: %A
22; CHECK: ArrayDecl[UnknownSize][%m] with elements of 8 bytes.
23; CHECK: ArrayRef[{0,+,1}<nuw><nsw><%for.i>][{0,+,1}<nuw><nsw><%for.j>]
24
25define void @foo(i64 %n, i64 %m, double* %A) {
26entry:
27  br label %for.i
28
29for.i:
30  %i = phi i64 [ 0, %entry ], [ %i.inc, %for.i.inc ]
31  %tmp = mul nsw i64 %i, %m
32  br label %for.j
33
34for.j:
35  %j = phi i64 [ 0, %for.i ], [ %j.inc, %for.j ]
36  %vlaarrayidx.sum = add i64 %j, %tmp
37  %arrayidx = getelementptr inbounds double, double* %A, i64 %vlaarrayidx.sum
38  %val = load double, double* %arrayidx
39  store double %val, double* %arrayidx
40  %j.inc = add nsw i64 %j, 1
41  %j.exitcond = icmp eq i64 %j.inc, %m
42  br i1 %j.exitcond, label %for.i.inc, label %for.j
43
44for.i.inc:
45  %i.inc = add nsw i64 %i, 1
46  %i.exitcond = icmp eq i64 %i.inc, %n
47  br i1 %i.exitcond, label %end, label %for.i
48
49end:
50  ret void
51}
52