1; RUN: opt %loadPolly \
2; RUN:     -pass-remarks-missed="polly-detect" -polly-detect-track-failures \
3; RUN:     -polly-allow-nonaffine-loops=false -polly-detect -analyze \
4; RUN:     < %s 2>&1| FileCheck %s --check-prefix=REJECTNONAFFINELOOPS
5; RUN: opt %loadPolly \
6; RUN:     -pass-remarks-missed="polly-detect" -polly-detect-track-failures \
7; RUN:     -polly-allow-nonaffine-loops=true -polly-detect -analyze \
8; RUN:     < %s 2>&1| FileCheck %s --check-prefix=ALLOWNONAFFINELOOPS
9; RUN: opt %loadPolly -pass-remarks-missed="polly-detect" \
10; RUN:     -polly-process-unprofitable=false \
11; RUN:     -polly-detect-track-failures -polly-allow-nonaffine-loops=true \
12; RUN:     -polly-allow-nonaffine -polly-detect -analyze < %s 2>&1 \
13; RUN:     | FileCheck %s --check-prefix=ALLOWNONAFFINEALL
14
15; void f(int A[], int n) {
16;   for (int i = 0; i < A[n+i]; i++)
17;     A[i] = 0;
18; }
19
20; If we reject non-affine loops the non-affine loop bound will be reported:
21;
22; REJECTNONAFFINELOOPS: remark: ReportLoopBound-01.c:1:12: The following errors keep this region from being a Scop.
23; REJECTNONAFFINELOOPS: remark: ReportLoopBound-01.c:2:8: Failed to derive an affine function from the loop bounds.
24; REJECTNONAFFINELOOPS: remark: ReportLoopBound-01.c:3:5: Invalid Scop candidate ends here.
25
26; If we allow non-affine loops the non-affine access will be reported:
27;
28; ALLOWNONAFFINELOOPS: remark: ReportLoopBound-01.c:1:12: The following errors keep this region from being a Scop.
29; ALLOWNONAFFINELOOPS: remark: ReportLoopBound-01.c:3:5: The array subscript of "A" is not affine
30; ALLOWNONAFFINELOOPS: remark: ReportLoopBound-01.c:3:5: Invalid Scop candidate ends here.
31
32; If we allow non-affine loops and non-affine accesses the region will be reported as not profitable:
33;
34; ALLOWNONAFFINEALL: remark: ReportLoopBound-01.c:1:12: The following errors keep this region from being a Scop.
35; ALLOWNONAFFINEALL: remark: ReportLoopBound-01.c:1:12: No profitable polyhedral optimization found
36; ALLOWNONAFFINEALL: remark: ReportLoopBound-01.c:3:5: Invalid Scop candidate ends here.
37
38target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
39
40define void @f(i32* %A, i32 %n) !dbg !4 {
41entry:
42  br label %entry.split
43
44entry.split:                                      ; preds = %entry
45  tail call void @llvm.dbg.value(metadata i32* %A, i64 0, metadata !13, metadata !DIExpression()), !dbg !14
46  tail call void @llvm.dbg.value(metadata i32* %A, i64 0, metadata !13, metadata !DIExpression()), !dbg !14
47  tail call void @llvm.dbg.value(metadata i32 %n, i64 0, metadata !15, metadata !DIExpression()), !dbg !16
48  tail call void @llvm.dbg.value(metadata i32 0, i64 0, metadata !18, metadata !DIExpression()), !dbg !20
49  %idxprom = sext i32 %n to i64, !dbg !21
50  %arrayidx = getelementptr inbounds i32, i32* %A, i64 %idxprom, !dbg !21
51  %0 = load i32, i32* %arrayidx, align 4, !dbg !21
52  %cmp3 = icmp sgt i32 %0, 0, !dbg !21
53  br i1 %cmp3, label %for.body.lr.ph, label %for.end, !dbg !21
54
55for.body.lr.ph:                                   ; preds = %entry.split
56  br label %for.body, !dbg !22
57
58for.body:                                         ; preds = %for.body.lr.ph, %for.body
59  %indvar = phi i64 [ 0, %for.body.lr.ph ], [ %indvar.next, %for.body ]
60  %arrayidx2 = getelementptr i32, i32* %A, i64 %indvar, !dbg !24
61  %1 = add i64 %indvar, 1, !dbg !24
62  %inc = trunc i64 %1 to i32, !dbg !21
63  store i32 0, i32* %arrayidx2, align 4, !dbg !24
64  tail call void @llvm.dbg.value(metadata !{null}, i64 0, metadata !18, metadata !DIExpression()), !dbg !20
65  %arrayidx3 = getelementptr inbounds i32, i32* %arrayidx, i64 %indvar, !dbg !21
66  %2 = load i32, i32* %arrayidx3, align 4, !dbg !21
67  %cmp = icmp slt i32 %inc, %2, !dbg !21
68  %indvar.next = add i64 %indvar, 1, !dbg !21
69  br i1 %cmp, label %for.body, label %for.cond.for.end_crit_edge, !dbg !21
70
71for.cond.for.end_crit_edge:                       ; preds = %for.body
72  br label %for.end, !dbg !25
73
74for.end:                                          ; preds = %for.cond.for.end_crit_edge, %entry.split
75  ret void, !dbg !27
76}
77
78declare void @llvm.dbg.declare(metadata, metadata, metadata)
79
80declare void @llvm.dbg.value(metadata, i64, metadata, metadata)
81
82attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
83attributes #1 = { nounwind readnone }
84
85!llvm.dbg.cu = !{!0}
86!llvm.module.flags = !{!10, !11}
87!llvm.ident = !{!12}
88
89!0 = distinct !DICompileUnit(language: DW_LANG_C99, producer: "clang version 3.6.0 ", isOptimized: false, emissionKind: 1, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2)
90!1 = !DIFile(filename: "ReportLoopBound-01.c", directory: "test/ScopDetectionDiagnostic/")
91!2 = !{}
92!4 = distinct !DISubprogram(name: "f", line: 1, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, scopeLine: 1, file: !1, scope: !5, type: !6, retainedNodes: !2)
93!5 = !DIFile(filename: "ReportLoopBound-01.c", directory: "test/ScopDetectionDiagnostic/")
94!6 = !DISubroutineType(types: !7)
95!7 = !{null, !8, !9}
96!8 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !9)
97!9 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
98!10 = !{i32 2, !"Dwarf Version", i32 4}
99!11 = !{i32 2, !"Debug Info Version", i32 3}
100!12 = !{!"clang version 3.6.0 "}
101!13 = !DILocalVariable(name: "A", line: 1, arg: 1, scope: !4, file: !5, type: !8)
102!14 = !DILocation(line: 1, column: 12, scope: !4)
103!15 = !DILocalVariable(name: "n", line: 1, arg: 2, scope: !4, file: !5, type: !9)
104!16 = !DILocation(line: 1, column: 21, scope: !4)
105!17 = !{i32 0}
106!18 = !DILocalVariable(name: "i", line: 2, scope: !19, file: !5, type: !9)
107!19 = distinct !DILexicalBlock(line: 2, column: 3, file: !1, scope: !4)
108!20 = !DILocation(line: 2, column: 12, scope: !19)
109!21 = !DILocation(line: 2, column: 8, scope: !19)
110!22 = !DILocation(line: 2, column: 8, scope: !23)
111!23 = distinct !DILexicalBlock(line: 2, column: 8, file: !1, scope: !19)
112!24 = !DILocation(line: 3, column: 5, scope: !19)
113!25 = !DILocation(line: 2, column: 8, scope: !26)
114!26 = distinct !DILexicalBlock(line: 2, column: 8, file: !1, scope: !19)
115!27 = !DILocation(line: 4, column: 1, scope: !4)
116