forked from OSchip/llvm-project
120 lines
5.6 KiB
LLVM
120 lines
5.6 KiB
LLVM
; RUN: opt %loadPolly -analyze -polly-detect \
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; RUN: -pass-remarks-missed="polly-detect" \
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; RUN: < %s 2>&1| FileCheck %s
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target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128"
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;void foo(int a, int b) {
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; if(b == 42) {
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; if (a > 0) {
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; LABEL1:
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; a--;
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; }
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;
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; if (a > 0) {
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; goto LABEL1;
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; }
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; b = b + 42;
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; }
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;}
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; CHECK: remark: ReportIrreducibleRegion.c:3:7: The following errors keep this region from being a Scop.
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; CHECK-NEXT: remark: ReportIrreducibleRegion.c:9:4: Irreducible region encountered in control flow.
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; CHECK-NEXT: remark: ReportIrreducibleRegion.c:9:4: Invalid Scop candidate ends here.
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; Function Attrs: nounwind uwtable
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define void @foo(i32 %a, i32 %b) #0 !dbg !4 {
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entry:
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%a.addr = alloca i32, align 4
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%b.addr = alloca i32, align 4
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store i32 %a, i32* %a.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %a.addr, metadata !11, metadata !12), !dbg !13
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store i32 %b, i32* %b.addr, align 4
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call void @llvm.dbg.declare(metadata i32* %b.addr, metadata !14, metadata !12), !dbg !15
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%0 = load i32, i32* %b.addr, align 4, !dbg !16
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%cmp = icmp eq i32 %0, 42, !dbg !18
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br i1 %cmp, label %if.then, label %if.end6, !dbg !19
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if.then: ; preds = %entry
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%1 = load i32, i32* %a.addr, align 4, !dbg !20
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%cmp1 = icmp sgt i32 %1, 0, !dbg !23
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br i1 %cmp1, label %if.then2, label %if.end, !dbg !24
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if.then2: ; preds = %if.then
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br label %LABEL1, !dbg !25
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LABEL1: ; preds = %if.then4, %if.then2
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%2 = load i32, i32* %a.addr, align 4, !dbg !27
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%dec = add nsw i32 %2, -1, !dbg !27
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store i32 %dec, i32* %a.addr, align 4, !dbg !27
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br label %if.end, !dbg !29
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if.end: ; preds = %LABEL1, %if.then
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%3 = load i32, i32* %a.addr, align 4, !dbg !30
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%cmp3 = icmp sgt i32 %3, 0, !dbg !32
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br i1 %cmp3, label %if.then4, label %if.end5, !dbg !33
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if.then4: ; preds = %if.end
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br label %LABEL1, !dbg !34
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if.end5: ; preds = %if.end
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%4 = load i32, i32* %b.addr, align 4, !dbg !36
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%add = add nsw i32 %4, 42, !dbg !37
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store i32 %add, i32* %b.addr, align 4, !dbg !38
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br label %if.end6, !dbg !39
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if.end6: ; preds = %if.end5, %entry
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ret void, !dbg !40
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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attributes #0 = { nounwind uwtable "disable-tail-calls"="false" "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "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" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!8, !9}
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!llvm.ident = !{!10}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 3.8.0 (http://llvm.org/git/clang.git a9b56346a9fa49b176872a2068b479d4ff759ae4) (http://llvm.org/git/llvm.git 82a04b17aeffdf31b7665f927ac42d81e80c07f0)", isOptimized: false, runtimeVersion: 0, emissionKind: 1, enums: !2)
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!1 = !DIFile(filename: "ReportIrreducibleRegion.c", directory: "llvm/tools/polly/test/ScopDetectionDiagnostics")
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!2 = !{}
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!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, variables: !2)
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!5 = !DISubroutineType(types: !6)
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!6 = !{null, !7, !7}
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!7 = !DIBasicType(name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !{i32 2, !"Dwarf Version", i32 4}
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!9 = !{i32 2, !"Debug Info Version", i32 3}
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!10 = !{!"clang version 3.8.0 (http://llvm.org/git/clang.git a9b56346a9fa49b176872a2068b479d4ff759ae4) (http://llvm.org/git/llvm.git 82a04b17aeffdf31b7665f927ac42d81e80c07f0)"}
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!11 = !DILocalVariable(name: "a", arg: 1, scope: !4, file: !1, line: 1, type: !7)
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!12 = !DIExpression()
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!13 = !DILocation(line: 1, column: 14, scope: !4)
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!14 = !DILocalVariable(name: "b", arg: 2, scope: !4, file: !1, line: 1, type: !7)
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!15 = !DILocation(line: 1, column: 21, scope: !4)
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!16 = !DILocation(line: 2, column: 5, scope: !17)
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!17 = distinct !DILexicalBlock(scope: !4, file: !1, line: 2, column: 5)
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!18 = !DILocation(line: 2, column: 7, scope: !17)
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!19 = !DILocation(line: 2, column: 5, scope: !4)
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!20 = !DILocation(line: 3, column: 7, scope: !21)
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!21 = distinct !DILexicalBlock(scope: !22, file: !1, line: 3, column: 7)
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!22 = distinct !DILexicalBlock(scope: !17, file: !1, line: 2, column: 14)
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!23 = !DILocation(line: 3, column: 9, scope: !21)
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!24 = !DILocation(line: 3, column: 7, scope: !22)
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!25 = !DILocation(line: 3, column: 14, scope: !26)
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!26 = !DILexicalBlockFile(scope: !21, file: !1, discriminator: 1)
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!27 = !DILocation(line: 5, column: 5, scope: !28)
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!28 = distinct !DILexicalBlock(scope: !21, file: !1, line: 3, column: 14)
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!29 = !DILocation(line: 6, column: 3, scope: !28)
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!30 = !DILocation(line: 8, column: 7, scope: !31)
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!31 = distinct !DILexicalBlock(scope: !22, file: !1, line: 8, column: 7)
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!32 = !DILocation(line: 8, column: 9, scope: !31)
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!33 = !DILocation(line: 8, column: 7, scope: !22)
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!34 = !DILocation(line: 9, column: 4, scope: !35)
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!35 = distinct !DILexicalBlock(scope: !31, file: !1, line: 8, column: 14)
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!36 = !DILocation(line: 11, column: 7, scope: !22)
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!37 = !DILocation(line: 11, column: 9, scope: !22)
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!38 = !DILocation(line: 11, column: 5, scope: !22)
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!39 = !DILocation(line: 12, column: 2, scope: !22)
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!40 = !DILocation(line: 13, column: 1, scope: !4)
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