1 ; RUN: opt %loadPolly -basicaa -polly-scops -analyze < %s | FileCheck %s
3 ; void foo(float A[restrict][20], float B[restrict][20], long n, long m,
5 ; for (long i = 0; i < n; i++)
6 ; for (long j = 0; j < m; j++)
8 ; for (long i = 0; i < m; i++)
9 ; for (long j = 0; j < p; j++)
13 ; This code is within bounds either if m and p are smaller than the array sizes,
14 ; but also if only p is smaller than the size of the second B dimension and n
15 ; is such that the first loop is never executed and consequently A is never
16 ; accessed. In this case the value of m does not matter.
18 ; CHECK: Assumed Context:
19 ; CHECK-NEXT: [n, m, p] -> { : p <= 20 and (n <= 0 or (n > 0 and m <= 20)) }
21 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
23 define void @foo([20 x float]* noalias %A, [20 x float]* noalias %B, i64 %n, i64 %m, i64 %p) {
27 for.cond: ; preds = %for.inc5, %entry
28 %i.0 = phi i64 [ 0, %entry ], [ %inc6, %for.inc5 ]
29 %cmp = icmp slt i64 %i.0, %n
30 br i1 %cmp, label %for.body, label %for.end7
32 for.body: ; preds = %for.cond
35 for.cond1: ; preds = %for.inc, %for.body
36 %j.0 = phi i64 [ 0, %for.body ], [ %inc, %for.inc ]
37 %cmp2 = icmp slt i64 %j.0, %m
38 br i1 %cmp2, label %for.body3, label %for.end
40 for.body3: ; preds = %for.cond1
41 %add = add nsw i64 %i.0, %j.0
42 %conv = sitofp i64 %add to float
43 %arrayidx4 = getelementptr inbounds [20 x float], [20 x float]* %A, i64 %i.0, i64 %j.0
44 store float %conv, float* %arrayidx4, align 4
47 for.inc: ; preds = %for.body3
48 %inc = add nsw i64 %j.0, 1
51 for.end: ; preds = %for.cond1
54 for.inc5: ; preds = %for.end
55 %inc6 = add nsw i64 %i.0, 1
58 for.end7: ; preds = %for.cond
61 for.cond9: ; preds = %for.inc25, %for.end7
62 %i8.0 = phi i64 [ 0, %for.end7 ], [ %inc26, %for.inc25 ]
63 %cmp10 = icmp slt i64 %i8.0, %m
64 br i1 %cmp10, label %for.body12, label %for.end27
66 for.body12: ; preds = %for.cond9
69 for.cond14: ; preds = %for.inc22, %for.body12
70 %j13.0 = phi i64 [ 0, %for.body12 ], [ %inc23, %for.inc22 ]
71 %cmp15 = icmp slt i64 %j13.0, %p
72 br i1 %cmp15, label %for.body17, label %for.end24
74 for.body17: ; preds = %for.cond14
75 %add18 = add nsw i64 %i8.0, %j13.0
76 %conv19 = sitofp i64 %add18 to float
77 %arrayidx21 = getelementptr inbounds [20 x float], [20 x float]* %B, i64 %i8.0, i64 %j13.0
78 store float %conv19, float* %arrayidx21, align 4
81 for.inc22: ; preds = %for.body17
82 %inc23 = add nsw i64 %j13.0, 1
85 for.end24: ; preds = %for.cond14
88 for.inc25: ; preds = %for.end24
89 %inc26 = add nsw i64 %i8.0, 1
92 for.end27: ; preds = %for.cond9