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78 lines
3.2 KiB
LLVM
78 lines
3.2 KiB
LLVM
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; RUN: opt < %s -gvn -S | FileCheck %s
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; CHECK: {{^}}for.body:
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; CHECK-NEXT: [[VREG1:%[^ ]+]] = phi{{.*}}[[VREG2:%[^ ]+]],{{.*}}%.sink,
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; CHECK-NOT: !dbg
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; CHECK-SAME: {{$}}
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; CHECK: {{^}}for.inc:
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; CHECK-NEXT: [[VREG2]] = phi{{.*}}%inc,{{.*}}[[VREG1]]
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target triple = "x86_64-unknown-linux-gnu"
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@g = external local_unnamed_addr global i32, align 4
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; Function Attrs: nounwind uwtable
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define void @foo(i32 %x, i32 %y, i32 %z) local_unnamed_addr #0 !dbg !4 {
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entry:
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%not.tobool = icmp eq i32 %x, 0, !dbg !8
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%.sink = zext i1 %not.tobool to i32, !dbg !8
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store i32 %.sink, i32* @g, align 4, !tbaa !9
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%cmp8 = icmp sgt i32 %y, 0, !dbg !13
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br i1 %cmp8, label %for.body.preheader, label %for.end, !dbg !17
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for.body.preheader: ; preds = %entry
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br label %for.body, !dbg !19
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for.body: ; preds = %for.body.preheader, %for.inc
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%i.09 = phi i32 [ %inc4, %for.inc ], [ 0, %for.body.preheader ]
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%cmp1 = icmp sgt i32 %i.09, %z, !dbg !19
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br i1 %cmp1, label %if.then2, label %for.inc, !dbg !21
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if.then2: ; preds = %for.body
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%0 = load i32, i32* @g, align 4, !dbg !22, !tbaa !9
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%inc = add nsw i32 %0, 1, !dbg !22
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store i32 %inc, i32* @g, align 4, !dbg !22, !tbaa !9
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br label %for.inc, !dbg !23
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for.inc: ; preds = %for.body, %if.then2
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%inc4 = add nuw nsw i32 %i.09, 1, !dbg !24
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%exitcond = icmp ne i32 %inc4, %y, !dbg !13
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br i1 %exitcond, label %for.body, label %for.end.loopexit, !dbg !17
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for.end.loopexit: ; preds = %for.inc
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br label %for.end, !dbg !26
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for.end: ; preds = %for.end.loopexit, %entry
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ret void, !dbg !26
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}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1)
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!1 = !DIFile(filename: "foo.c", directory: "b/")
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!2 = !{i32 2, !"Dwarf Version", i32 4}
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!3 = !{i32 2, !"Debug Info Version", i32 3}
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!4 = distinct !DISubprogram(name: "foo", scope: !1, file: !1, line: 3, type: !5, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: true, unit: !0)
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!5 = !DISubroutineType(types: !6)
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!6 = !{null, !7, !7, !7}
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!7 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!8 = !DILocation(line: 4, column: 7, scope: !4)
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!9 = !{!10, !10, i64 0}
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!10 = !{!"int", !11, i64 0}
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!11 = !{!"omnipotent char", !12, i64 0}
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!12 = !{!"Simple C/C++ TBAA"}
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!13 = !DILocation(line: 10, column: 13, scope: !14)
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!14 = !DILexicalBlockFile(scope: !15, file: !1, discriminator: 1)
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!15 = distinct !DILexicalBlock(scope: !16, file: !1, line: 10, column: 3)
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!16 = distinct !DILexicalBlock(scope: !4, file: !1, line: 10, column: 3)
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!17 = !DILocation(line: 10, column: 3, scope: !18)
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!18 = !DILexicalBlockFile(scope: !16, file: !1, discriminator: 1)
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!19 = !DILocation(line: 11, column: 11, scope: !20)
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!20 = distinct !DILexicalBlock(scope: !15, file: !1, line: 11, column: 9)
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!21 = !DILocation(line: 11, column: 9, scope: !15)
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!22 = !DILocation(line: 12, column: 8, scope: !20)
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!23 = !DILocation(line: 12, column: 7, scope: !20)
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!24 = !DILocation(line: 10, column: 20, scope: !25)
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!25 = !DILexicalBlockFile(scope: !15, file: !1, discriminator: 2)
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!26 = !DILocation(line: 13, column: 1, scope: !4)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!2, !3}
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