74 lines
4.1 KiB
LLVM
74 lines
4.1 KiB
LLVM
; RUN: opt < %s -loop-reduce -S | FileCheck %s
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;
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; Test that LSR avoids crashing on very large integer inputs. It should
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; discard the variable location by creating an undef dbg.value.
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;
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; CHECK: call void @llvm.dbg.value(metadata i128 undef,
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source_filename = "<stdin>"
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target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
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target triple = "x86_64-unknown-linux-gnu"
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define dso_local void @qux() local_unnamed_addr !dbg !10 {
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entry:
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br label %for.body, !dbg !17
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for.body: ; preds = %for.body.for.body_crit_edge, %entry
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%0 = phi i128 [ 0, %entry ], [ %.pre8, %for.body.for.body_crit_edge ], !dbg !19
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%add6.i.i = add i128 %0, 18446744073709551615, !dbg !35
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call void @llvm.dbg.value(metadata i128 %add6.i.i, metadata !25, metadata !DIExpression(DW_OP_LLVM_fragment, 0, 128)), !dbg !36
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br label %for.body.for.body_crit_edge
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for.body.for.body_crit_edge: ; preds = %for.body
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%.pre8 = load i128, i128* undef, align 16, !dbg !19, !tbaa !37
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br label %for.body, !dbg !17
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}
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; Function Attrs: nofree nosync nounwind readnone speculatable willreturn
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declare void @llvm.dbg.value(metadata, metadata, metadata)
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!7, !8, !9}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, retainedTypes: !3, globals: !2, splitDebugInlining: false, nameTableKind: None)
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!1 = !DIFile(filename: "/tmp/beans.c", directory: "/tmp")
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!2 = !{}
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!3 = !{!4}
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!4 = !DIDerivedType(tag: DW_TAG_typedef, name: "uint64_t", file: !5, line: 1, baseType: !6)
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!5 = !DIFile(filename: "/tmp/beans.c", directory: "")
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!6 = !DIBasicType(name: "long unsigned int", size: 64, encoding: DW_ATE_unsigned)
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!7 = !{i32 7, !"Dwarf Version", i32 4}
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!8 = !{i32 2, !"Debug Info Version", i32 3}
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!9 = !{i32 1, !"wchar_size", i32 4}
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!10 = distinct !DISubprogram(name: "qux", scope: !5, file: !5, line: 27, type: !11, scopeLine: 27, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!11 = !DISubroutineType(types: !12)
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!12 = !{null, !13, !13}
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!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64)
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!14 = !DIDerivedType(tag: DW_TAG_typedef, name: "croix", file: !5, line: 2, baseType: !15)
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!15 = !DIDerivedType(tag: DW_TAG_typedef, name: "__uint128_t", file: !1, baseType: !16)
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!16 = !DIBasicType(name: "unsigned __int128", size: 128, encoding: DW_ATE_unsigned)
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!17 = !DILocation(line: 30, column: 3, scope: !18)
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!18 = distinct !DILexicalBlock(scope: !10, file: !5, line: 30, column: 3)
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!19 = !DILocation(line: 12, column: 25, scope: !20, inlinedAt: !30)
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!20 = distinct !DISubprogram(name: "bar", scope: !5, file: !5, line: 8, type: !21, scopeLine: 8, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagLocalToUnit | DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !24)
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!21 = !DISubroutineType(types: !22)
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!22 = !{null, !23, !13}
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!23 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !4, size: 64)
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!24 = !{!25}
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!25 = !DILocalVariable(name: "tmp", scope: !20, file: !5, line: 9, type: !26)
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!26 = !DIDerivedType(tag: DW_TAG_typedef, name: "xyzzy", file: !5, line: 3, baseType: !27)
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!27 = !DICompositeType(tag: DW_TAG_array_type, baseType: !14, size: 512, elements: !28)
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!28 = !{!29}
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!29 = !DISubrange(count: 4)
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!30 = distinct !DILocation(line: 23, column: 3, scope: !31, inlinedAt: !32)
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!31 = distinct !DISubprogram(name: "baz", scope: !5, file: !5, line: 21, type: !11, scopeLine: 21, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2)
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!32 = distinct !DILocation(line: 31, column: 5, scope: !33)
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!33 = distinct !DILexicalBlock(scope: !34, file: !5, line: 30, column: 31)
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!34 = distinct !DILexicalBlock(scope: !18, file: !5, line: 30, column: 3)
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!35 = !DILocation(line: 12, column: 23, scope: !20, inlinedAt: !30)
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!36 = !DILocation(line: 0, scope: !20, inlinedAt: !30)
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!37 = !{!38, !38, i64 0}
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!38 = !{!"__int128", !39, i64 0}
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!39 = !{!"omnipotent char", !40, i64 0}
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!40 = !{!"Simple C/C++ TBAA"}
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