1 ; RUN: opt %loadPolly -polly-print-detect -pass-remarks-missed="polly-detect" -disable-output < %s 2>&1| FileCheck %s
2 target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
4 ;void foo(int a, int b) {
18 ; CHECK: remark: ReportIrreducibleRegion.c:3:7: The following errors keep this region from being a Scop.
19 ; CHECK-NEXT: remark: ReportIrreducibleRegion.c:9:4: Irreducible region encountered in control flow.
20 ; CHECK-NEXT: remark: ReportIrreducibleRegion.c:9:4: Invalid Scop candidate ends here.
23 ; Function Attrs: nounwind uwtable
24 define void @foo(i32 %a, i32 %b) #0 !dbg !4 {
26 %a.addr = alloca i32, align 4
27 %b.addr = alloca i32, align 4
28 store i32 %a, ptr %a.addr, align 4
29 call void @llvm.dbg.declare(metadata ptr %a.addr, metadata !11, metadata !12), !dbg !13
30 store i32 %b, ptr %b.addr, align 4
31 call void @llvm.dbg.declare(metadata ptr %b.addr, metadata !14, metadata !12), !dbg !15
32 %0 = load i32, ptr %b.addr, align 4, !dbg !16
33 %cmp = icmp eq i32 %0, 42, !dbg !18
34 br i1 %cmp, label %if.then, label %if.end6, !dbg !19
36 if.then: ; preds = %entry
37 %1 = load i32, ptr %a.addr, align 4, !dbg !20
38 %cmp1 = icmp sgt i32 %1, 0, !dbg !23
39 br i1 %cmp1, label %if.then2, label %if.end, !dbg !24
41 if.then2: ; preds = %if.then
42 br label %LABEL1, !dbg !25
44 LABEL1: ; preds = %if.then4, %if.then2
45 %2 = load i32, ptr %a.addr, align 4, !dbg !27
46 %dec = add nsw i32 %2, -1, !dbg !27
47 store i32 %dec, ptr %a.addr, align 4, !dbg !27
48 br label %if.end, !dbg !29
50 if.end: ; preds = %LABEL1, %if.then
51 %3 = load i32, ptr %a.addr, align 4, !dbg !30
52 %cmp3 = icmp sgt i32 %3, 0, !dbg !32
53 br i1 %cmp3, label %if.then4, label %if.end5, !dbg !33
55 if.then4: ; preds = %if.end
56 br label %LABEL1, !dbg !34
58 if.end5: ; preds = %if.end
59 %4 = load i32, ptr %b.addr, align 4, !dbg !36
60 %add = add nsw i32 %4, 42, !dbg !37
61 store i32 %add, ptr %b.addr, align 4, !dbg !38
62 br label %if.end6, !dbg !39
64 if.end6: ; preds = %if.end5, %entry
68 ; Function Attrs: nounwind readnone
69 declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
71 attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "frame-pointer"="all" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+fxsr,+mmx,+sse,+sse2" "unsafe-fp-math"="false" "use-soft-float"="false" }
72 attributes #1 = { nounwind readnone }
75 !llvm.module.flags = !{!8, !9}
78 !0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2)
79 !1 = !DIFile(filename: "ReportIrreducibleRegion.c", directory: "llvm/tools/polly/test/ScopDetectionDiagnostics")
81 !4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 1, type: !5, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2)
82 !5 = !DISubroutineType(types: !6)
84 !7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
85 !8 = !{i32 2, !"Dwarf Version", i32 4}
86 !9 = !{i32 2, !"Debug Info Version", i32 3}
87 !10 = !{!"clang version 3.8.0"}
88 !11 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 1, type: !7)
90 !13 = !DILocation(line: 1, column: 14, scope: !4)
91 !14 = !DILocalVariable(name: "b", arg: 2, scope: !4, file: !1, line: 1, type: !7)
92 !15 = !DILocation(line: 1, column: 21, scope: !4)
93 !16 = !DILocation(line: 2, column: 5, scope: !17)
94 !17 = distinct !DILexicalBlock(scope: !4, file: !1, line: 2, column: 5)
95 !18 = !DILocation(line: 2, column: 7, scope: !17)
96 !19 = !DILocation(line: 2, column: 5, scope: !4)
97 !20 = !DILocation(line: 3, column: 7, scope: !21)
98 !21 = distinct !DILexicalBlock(scope: !22, file: !1, line: 3, column: 7)
99 !22 = distinct !DILexicalBlock(scope: !17, file: !1, line: 2, column: 14)
100 !23 = !DILocation(line: 3, column: 9, scope: !21)
101 !24 = !DILocation(line: 3, column: 7, scope: !22)
102 !25 = !DILocation(line: 3, column: 14, scope: !26)
103 !26 = !DILexicalBlockFile(scope: !21, file: !1, discriminator: 1)
104 !27 = !DILocation(line: 5, column: 5, scope: !28)
105 !28 = distinct !DILexicalBlock(scope: !21, file: !1, line: 3, column: 14)
106 !29 = !DILocation(line: 6, column: 3, scope: !28)
107 !30 = !DILocation(line: 8, column: 7, scope: !31)
108 !31 = distinct !DILexicalBlock(scope: !22, file: !1, line: 8, column: 7)
109 !32 = !DILocation(line: 8, column: 9, scope: !31)
110 !33 = !DILocation(line: 8, column: 7, scope: !22)
111 !34 = !DILocation(line: 9, column: 4, scope: !35)
112 !35 = distinct !DILexicalBlock(scope: !31, file: !1, line: 8, column: 14)
113 !36 = !DILocation(line: 11, column: 7, scope: !22)
114 !37 = !DILocation(line: 11, column: 9, scope: !22)
115 !38 = !DILocation(line: 11, column: 5, scope: !22)
116 !39 = !DILocation(line: 12, column: 2, scope: !22)
117 !40 = !DILocation(line: 13, column: 1, scope: !4)