1; RUN: opt %loadPolly -analyze -polly-scops < %s | FileCheck %s -check-prefix=SCOP
2
3; There is no FileCheck because we want to make sure that this doesn't crash.
4; RUN: opt %loadPolly -polly-codegen-ppcg -polly-acc-fail-on-verify-module-failure \
5; RUN: -disable-output < %s
6
7; REQUIRES: pollyacc
8
9; Due to the existence of the `fence` call, We can only detect the inner loop
10; and not the outer loop. PPCGCodeGeneration had not implemented this case.
11; The fix was to pull the implementation from `IslNodeBuilder.
12
13; Make sure that we only capture the inner loop
14; SCOP:      Function: f
15; SCOP-NEXT: Region: %for2.body---%for2.body.fence
16; SCOP-NEXT: Max Loop Depth:  1
17
18target datalayout = "e-p:64:64:64-S128-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f16:16:16-f32:32:32-f64:64:64-f128:128:128-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128-n8:16:32:64"
19target triple = "x86_64-unknown-linux-gnu"
20
21declare void @fn_to_fence(i32 *%val)
22
23; void f(int *arr, bool shouldcont) {
24;     for(int i = 0; ; i++) {
25;         for(int j = 0; j < 10; j++) {
26;             arr[j] = i;
27;         }
28;         fence(arr);
29;         if (!shouldcont) break;
30;     }
31; }
32
33
34; Function Attrs: nounwind uwtable
35define void @f(i32 *%arr, i1 %shouldcont) #1 {
36entry:
37  br label %for.init
38
39for.init:                                             ; preds = %for.end, %entry.split
40  %i = phi i32 [ %i.next, %for.end ], [ 0, %entry ]
41  br label %for2.body
42
43for2.body:                                             ; preds = %"65", %"64"
44  %j = phi i32 [ %j.next, %for2.body ], [ 0, %for.init ]
45  %j.sext = sext i32 %j to i64
46  %arr.slot = getelementptr i32, i32* %arr, i64 %j.sext
47  store i32 %i, i32* %arr.slot, align 4
48  %exitcond = icmp eq i32 %j, 10
49  %j.next = add i32 %j, 1
50  br i1 %exitcond, label %for2.body.fence, label %for2.body
51
52for2.body.fence:                                             ; preds = %"65"
53  call void @fn_to_fence(i32* %arr) #2
54  br i1 %shouldcont, label %for.end, label %exit
55for.end:                                             ; preds = %"69"
56  %i.next = add i32 %i, 1
57  br label %for.init
58
59exit:                                             ; preds = %"69"
60  ret void
61
62}
63
64
65attributes #0 = { argmemonly nounwind }
66attributes #1 = { nounwind uwtable }
67attributes #2 = { nounwind }
68