91 lines
4.6 KiB
LLVM
91 lines
4.6 KiB
LLVM
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; RUN: llc -mtriple=mips64-unknown-freebsd -target-abi n64 -relocation-model pic -verify-machineinstrs -o /dev/null %s -O2
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; Test that the presence of debug information does not cause the branch folder
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; to rewrite branches to have negative basic block ids, which would cause the
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; long branch pass to crash.
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@c = external global i32, align 4
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define void @e() !dbg !19 {
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entry:
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%0 = load i32, i32* @c, align 4, !dbg !28, !tbaa !31
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%tobool8 = icmp eq i32 %0, 0, !dbg !35
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br i1 %tobool8, label %for.end, label %for.body.preheader, !dbg !35
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for.body.preheader: ; preds = %entry
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br label %for.body, !dbg !36
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for.body: ; preds = %for.body.preheader
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%1 = load i8, i8* undef, align 1, !dbg !36, !tbaa !38
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%conv = zext i8 %1 to i32, !dbg !36
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%cmp = icmp sgt i32 %0, %conv, !dbg !39
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br i1 %cmp, label %if.end, label %if.then, !dbg !40
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if.then: ; preds = %for.body
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tail call void @llvm.dbg.value(metadata i32 %conv, metadata !41, metadata !DIExpression()), !dbg !43
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%idxprom5 = zext i8 %1 to i64, !dbg !44
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%call = tail call i32 bitcast (i32 (...)* @g to i32 (i32)*)(i32 signext undef) #3, !dbg !45
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br label %if.end, !dbg !46
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if.end: ; preds = %if.then, %for.body
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unreachable
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for.end: ; preds = %entry
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ret void
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}
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declare i32 @g(...)
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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 = !{!17, !18}
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!0 = distinct !DICompileUnit(language: DW_LANG_C99, file: !1, producer: "clang version 6.0.0", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, globals: !3)
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!1 = !DIFile(filename: "/local/scratch/alr48/cheri/llvm/tools/clang/test/CodeGen/<stdin>", directory: "/local/scratch/alr48/cheri/llvm/cmake-build-debug/tools/clang/test/CodeGen")
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!2 = !{}
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!3 = !{!4, !9, !13, !15}
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!4 = !DIGlobalVariableExpression(var: !5, expr: !DIExpression())
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!5 = distinct !DIGlobalVariable(name: "a", scope: !0, file: !6, line: 6, type: !7, isLocal: false, isDefinition: true)
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!6 = !DIFile(filename: "/crash.c", directory: "/tmp")
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!7 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !8, size: 64)
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!8 = !DIBasicType(name: "unsigned char", size: 8, encoding: DW_ATE_unsigned_char)
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!9 = !DIGlobalVariableExpression(var: !10, expr: !DIExpression())
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!10 = distinct !DIGlobalVariable(name: "b", scope: !0, file: !6, line: 7, type: !11, isLocal: false, isDefinition: true)
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!11 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !12, size: 64)
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!12 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed)
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!13 = !DIGlobalVariableExpression(var: !14, expr: !DIExpression())
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!14 = distinct !DIGlobalVariable(name: "c", scope: !0, file: !6, line: 8, type: !12, isLocal: false, isDefinition: true)
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!15 = !DIGlobalVariableExpression(var: !16, expr: !DIExpression())
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!16 = distinct !DIGlobalVariable(name: "d", scope: !0, file: !6, line: 8, type: !12, isLocal: false, isDefinition: true)
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!17 = !{i32 2, !"Debug Info Version", i32 3}
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!18 = !{i32 7, !"PIC Level", i32 2}
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!19 = distinct !DISubprogram(name: "e", scope: !6, file: !6, line: 9, type: !20, isLocal: false, isDefinition: true, scopeLine: 9, isOptimized: true, unit: !0, retainedNodes: !22)
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!20 = !DISubroutineType(types: !21)
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!21 = !{!12}
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!22 = !{!23}
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!23 = !DILocalVariable(name: "f", scope: !24, file: !6, line: 12, type: !12)
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!24 = distinct !DILexicalBlock(scope: !25, file: !6, line: 11, column: 20)
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!25 = distinct !DILexicalBlock(scope: !26, file: !6, line: 11, column: 9)
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!26 = distinct !DILexicalBlock(scope: !27, file: !6, line: 10, column: 3)
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!27 = distinct !DILexicalBlock(scope: !19, file: !6, line: 10, column: 3)
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!28 = !DILocation(line: 10, column: 10, scope: !29)
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!29 = distinct !DILexicalBlock(scope: !30, file: !6, line: 10, column: 3)
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!30 = distinct !DILexicalBlock(scope: !19, file: !6, line: 10, column: 3)
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!31 = !{!32, !32, i64 0}
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!32 = !{!"int", !33, i64 0}
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!33 = !{!"omnipotent char", !34, i64 0}
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!34 = !{!"Simple C/C++ TBAA"}
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!35 = !DILocation(line: 10, column: 3, scope: !30)
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!36 = !DILocation(line: 11, column: 9, scope: !37)
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!37 = distinct !DILexicalBlock(scope: !29, file: !6, line: 11, column: 9)
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!38 = !{!33, !33, i64 0}
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!39 = !DILocation(line: 11, column: 14, scope: !37)
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!40 = !DILocation(line: 11, column: 9, scope: !29)
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!41 = !DILocalVariable(name: "f", scope: !42, file: !6, line: 12, type: !12)
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!42 = distinct !DILexicalBlock(scope: !37, file: !6, line: 11, column: 20)
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!43 = !DILocation(line: 12, column: 11, scope: !42)
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!44 = !DILocation(line: 13, column: 9, scope: !42)
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!45 = !DILocation(line: 13, column: 7, scope: !42)
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!46 = !DILocation(line: 14, column: 5, scope: !42)
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