1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
| ; RUN: opt < %s -analyze -delinearize | FileCheck %s
; XFAIL: *
; We do not recognize anymore variable size arrays.
; extern void bar(long n, long m, double A[n][m]);
;
; void foo(long a, long b) {
; for (long n = 1; n < a; ++n)
; for (long m = 1; m < b; ++m) {
; double A[n][m];
; for (long i = 0; i < n; i++)
; for (long j = 0; j < m; j++)
; A[i][j] = 1.0;
; bar(n, m, A);
; }
; }
; AddRec: {{%vla.us,+,{8,+,8}<%for.cond7.preheader.lr.ph.split.us.us>}<%for.body9.lr.ph.us.us>,+,8}<%for.body9.us.us>
; CHECK: Base offset: %vla.us
; CHECK: ArrayDecl[UnknownSize][{1,+,1}<%for.cond7.preheader.lr.ph.split.us.us>] with elements of sizeof(double) bytes.
; CHECK: ArrayRef[{0,+,1}<nuw><nsw><%for.body9.lr.ph.us.us>][{0,+,1}<nuw><nsw><%for.body9.us.us>]
define void @foo(i64 %a, i64 %b) nounwind uwtable {
entry:
%cmp43 = icmp sgt i64 %a, 1
br i1 %cmp43, label %for.cond1.preheader.lr.ph, label %for.end19
for.cond1.preheader.lr.ph: ; preds = %entry
%cmp224 = icmp sgt i64 %b, 1
br label %for.cond1.preheader
for.cond1.preheader: ; preds = %for.inc17, %for.cond1.preheader.lr.ph
%indvars.iv51 = phi i64 [ 1, %for.cond1.preheader.lr.ph ], [ %indvars.iv.next52, %for.inc17 ]
br i1 %cmp224, label %for.cond7.preheader.lr.ph.split.us.us, label %for.inc17
for.end13.us: ; preds = %for.inc11.us.us
call void @bar(i64 %indvars.iv51, i64 %indvars.iv48, double* %vla.us) nounwind
call void @llvm.stackrestore(i8* %1)
%indvars.iv.next49 = add i64 %indvars.iv48, 1
%exitcond54 = icmp eq i64 %indvars.iv.next49, %b
br i1 %exitcond54, label %for.inc17, label %for.cond7.preheader.lr.ph.split.us.us
for.inc11.us.us: ; preds = %for.body9.us.us
%inc12.us.us = add nsw i64 %i.023.us.us, 1
%exitcond53 = icmp eq i64 %inc12.us.us, %indvars.iv51
br i1 %exitcond53, label %for.end13.us, label %for.body9.lr.ph.us.us
for.body9.lr.ph.us.us: ; preds = %for.cond7.preheader.lr.ph.split.us.us, %for.inc11.us.us
%i.023.us.us = phi i64 [ 0, %for.cond7.preheader.lr.ph.split.us.us ], [ %inc12.us.us, %for.inc11.us.us ]
%0 = mul nsw i64 %i.023.us.us, %indvars.iv48
br label %for.body9.us.us
for.body9.us.us: ; preds = %for.body9.us.us, %for.body9.lr.ph.us.us
%j.021.us.us = phi i64 [ 0, %for.body9.lr.ph.us.us ], [ %inc.us.us, %for.body9.us.us ]
%arrayidx.sum.us.us = add i64 %j.021.us.us, %0
%arrayidx10.us.us = getelementptr inbounds double, double* %vla.us, i64 %arrayidx.sum.us.us
store double 1.000000e+00, double* %arrayidx10.us.us, align 8
%inc.us.us = add nsw i64 %j.021.us.us, 1
%exitcond50 = icmp eq i64 %inc.us.us, %indvars.iv48
br i1 %exitcond50, label %for.inc11.us.us, label %for.body9.us.us
for.cond7.preheader.lr.ph.split.us.us: ; preds = %for.cond1.preheader, %for.end13.us
%indvars.iv48 = phi i64 [ %indvars.iv.next49, %for.end13.us ], [ 1, %for.cond1.preheader ]
%1 = call i8* @llvm.stacksave()
%2 = mul nuw i64 %indvars.iv48, %indvars.iv51
%vla.us = alloca double, i64 %2, align 16
br label %for.body9.lr.ph.us.us
for.inc17: ; preds = %for.end13.us, %for.cond1.preheader
%indvars.iv.next52 = add i64 %indvars.iv51, 1
%exitcond55 = icmp eq i64 %indvars.iv.next52, %a
br i1 %exitcond55, label %for.end19, label %for.cond1.preheader
for.end19: ; preds = %for.inc17, %entry
ret void
}
declare i8* @llvm.stacksave() nounwind
declare void @bar(i64, i64, double*)
declare void @llvm.stackrestore(i8*) nounwind
|