1; RUN: opt %loadPolly -polly-codegen -S < %s | FileCheck %s --check-prefix=SCOPES
2;
3; Check that we create alias scopes that indicate the accesses to A, B and C cannot alias in any way.
4;
5; SCOPES-LABEL: polly.stmt.for.body:
6; SCOPES:      %[[BIdx:[._a-zA-Z0-9]*]] = getelementptr{{.*}} i32* %B, i64 %polly.indvar
7; SCOPES:      load i32, i32* %[[BIdx]], align 4, !alias.scope ![[AliasScopeB:[0-9]*]], !noalias ![[NoAliasB:[0-9]*]]
8; SCOPES:      %[[CIdx:[._a-zA-Z0-9]*]] = getelementptr{{.*}} float* %C, i64 %polly.indvar
9; SCOPES:      load float, float* %[[CIdx]], align 4, !alias.scope ![[AliasScopeC:[0-9]*]], !noalias ![[NoAliasC:[0-9]*]]
10; SCOPES:      %[[AIdx:[._a-zA-Z0-9]*]] = getelementptr{{.*}} i32* %A, i64 %polly.indvar
11; SCOPES:      store i32 %{{[._a-zA-Z0-9]*}}, i32* %[[AIdx]], align 4, !alias.scope ![[AliasScopeA:[0-9]*]], !noalias ![[NoAliasA:[0-9]*]]
12;
13; SCOPES:      ![[AliasScopeB]] = distinct !{![[AliasScopeB]], !{{[0-9]*}}, !"polly.alias.scope.MemRef_B"}
14; SCOPES:      ![[NoAliasB]] = !{
15; SCOPES-DAG:     ![[AliasScopeA]]
16; SCOPES-DAG:     ![[AliasScopeC]]
17; SCOPES:       }
18; SCOPES-DAG:  ![[AliasScopeA]] = distinct !{![[AliasScopeA]], !{{[0-9]*}}, !"polly.alias.scope.MemRef_A"}
19; SCOPES-DAG:  ![[AliasScopeC]] = distinct !{![[AliasScopeC]], !{{[0-9]*}}, !"polly.alias.scope.MemRef_C"}
20; SCOPES:      ![[NoAliasC]] = !{
21; SCOPES-DAG:     ![[AliasScopeA]]
22; SCOPES-DAG:     ![[AliasScopeB]]
23; SCOPES:       }
24; SCOPES:      ![[NoAliasA]] = !{
25; SCOPES-DAG:     ![[AliasScopeB]]
26; SCOPES-DAG:     ![[AliasScopeC]]
27; SCOPES:       }
28;
29;    void jd(int *A, int *B, float *C) {
30;      for (int i = 0; i < 1024; i++)
31;        A[i] = B[i] + C[i];
32;    }
33;
34target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
35
36define void @jd(i32* %A, i32* %B, float* %C) {
37entry:
38  br label %for.cond
39
40for.cond:                                         ; preds = %for.inc, %entry
41  %indvars.iv = phi i64 [ %indvars.iv.next, %for.inc ], [ 0, %entry ]
42  %exitcond = icmp ne i64 %indvars.iv, 1024
43  br i1 %exitcond, label %for.body, label %for.end
44
45for.body:                                         ; preds = %for.cond
46  %arrayidx = getelementptr inbounds i32, i32* %B, i64 %indvars.iv
47  %tmp = load i32, i32* %arrayidx, align 4
48  %conv = sitofp i32 %tmp to float
49  %arrayidx2 = getelementptr inbounds float, float* %C, i64 %indvars.iv
50  %tmp1 = load float, float* %arrayidx2, align 4
51  %add = fadd fast float %conv, %tmp1
52  %conv3 = fptosi float %add to i32
53  %arrayidx5 = getelementptr inbounds i32, i32* %A, i64 %indvars.iv
54  store i32 %conv3, i32* %arrayidx5, align 4
55  br label %for.inc
56
57for.inc:                                          ; preds = %for.body
58  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
59  br label %for.cond
60
61for.end:                                          ; preds = %for.cond
62  ret void
63}
64