forked from OSchip/llvm-project
67 lines
3.0 KiB
LLVM
67 lines
3.0 KiB
LLVM
; RUN: llc -mtriple=x86_64-apple-macosx <%s | FileCheck %s
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; Test that we don't generate empty .debug_loc entries. Originally, there were
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; two empty .debug_loc entries for 'a' in an otherwise empty .debug_loc list.
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;
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; CHECK: .section __DWARF,__debug_loc,regular,debug
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; CHECK-NEXT: Lsection_debug_loc:
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; CHECK-NEXT: .section __DWARF,__debug_abbrev,regular,debug
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;
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; Test that the variable stuck around.
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; CHECK: .section __DWARF,__debug_info,regular,debug
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; CHECK: DW_TAG_variable
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; CHECK-NOT: DW_AT_location
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; Generated using clang -cc1 with the following args:
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;
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; -triple x86_64-apple-macosx -emit-llvm -gdwarf-4 -O1
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;
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; From this testcase:
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;
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;; void fn1() {
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;; float a = 1;
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;; for (;;)
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;; a = 0;
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;; }
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; Function Attrs: noreturn nounwind readnone
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define void @_Z3fn1v() #0 !dbg !4 {
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entry:
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tail call void @llvm.dbg.value(metadata float 1.000000e+00, i64 0, metadata !9, metadata !14), !dbg !15
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br label %for.cond, !dbg !16
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for.cond: ; preds = %for.cond, %entry
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tail call void @llvm.dbg.value(metadata float 0.000000e+00, i64 0, metadata !9, metadata !14), !dbg !15
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br label %for.cond, !dbg !17
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1
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attributes #0 = { noreturn nounwind readnone "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "no-realign-stack" "stack-protector-buffer-size"="8" "target-features"="+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 = !{!11, !12}
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!llvm.ident = !{!13}
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!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 3.7.0 (trunk 238517) (llvm/trunk 238524)", isOptimized: true, runtimeVersion: 0, emissionKind: 1, enums: !2, retainedTypes: !2, subprograms: !3, globals: !2, imports: !2)
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!1 = !DIFile(filename: "<stdin>", directory: "/Users/dexonsmith/data/llvm/bootstrap/play/delta2/testcase")
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!2 = !{}
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!3 = !{!4}
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!4 = distinct !DISubprogram(name: "fn1", linkageName: "_Z3fn1v", scope: !5, file: !5, line: 1, type: !6, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: true, variables: !8)
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!5 = !DIFile(filename: "t.cpp", directory: "/Users/dexonsmith/data/llvm/bootstrap/play/delta2/testcase")
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!6 = !DISubroutineType(types: !7)
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!7 = !{null}
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!8 = !{!9}
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!9 = !DILocalVariable(name: "a", scope: !4, file: !5, line: 2, type: !10)
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!10 = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float)
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!11 = !{i32 2, !"Dwarf Version", i32 4}
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!12 = !{i32 2, !"Debug Info Version", i32 3}
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!13 = !{!"clang version 3.7.0 (trunk 238517) (llvm/trunk 238524)"}
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!14 = !DIExpression()
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!15 = !DILocation(line: 2, scope: !4)
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!16 = !DILocation(line: 3, scope: !4)
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!17 = !DILocation(line: 3, scope: !18)
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!18 = distinct !DILexicalBlock(scope: !19, file: !5, line: 3)
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!19 = distinct !DILexicalBlock(scope: !4, file: !5, line: 3)
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