| ; RUN: llc -mtriple=x86_64-apple-macosx <%s | FileCheck %s |
| ; Test that we don't generate empty .debug_loc entries. Originally, there were |
| ; two empty .debug_loc entries for 'a' in an otherwise empty .debug_loc list. |
| ; |
| ; CHECK: .section __DWARF,__debug_loc,regular,debug |
| ; CHECK-NEXT: Lsection_debug_loc: |
| ; CHECK-NEXT: .section __DWARF,__debug_abbrev,regular,debug |
| ; |
| ; Test that the variable stuck around. |
| ; CHECK: .section __DWARF,__debug_info,regular,debug |
| ; CHECK: DW_TAG_variable |
| ; CHECK-NOT: DW_AT_location |
| |
| ; Generated using clang -cc1 with the following args: |
| ; |
| ; -triple x86_64-apple-macosx -emit-llvm -gdwarf-4 -O1 |
| ; |
| ; From this testcase: |
| ; |
| ;; void fn1() { |
| ;; float a = 1; |
| ;; for (;;) |
| ;; a = 0; |
| ;; } |
| |
| ; Function Attrs: noreturn nounwind readnone |
| define void @_Z3fn1v() #0 !dbg !4 { |
| entry: |
| tail call void @llvm.dbg.value(metadata float 1.000000e+00, i64 0, metadata !9, metadata !14), !dbg !15 |
| br label %for.cond, !dbg !16 |
| |
| for.cond: ; preds = %for.cond, %entry |
| tail call void @llvm.dbg.value(metadata float 0.000000e+00, i64 0, metadata !9, metadata !14), !dbg !15 |
| br label %for.cond, !dbg !17 |
| } |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #1 |
| |
| 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" } |
| attributes #1 = { nounwind readnone } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!11, !12} |
| !llvm.ident = !{!13} |
| |
| !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) |
| !1 = !DIFile(filename: "<stdin>", directory: "/Users/dexonsmith/data/llvm/bootstrap/play/delta2/testcase") |
| !2 = !{} |
| !3 = !{!4} |
| !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) |
| !5 = !DIFile(filename: "t.cpp", directory: "/Users/dexonsmith/data/llvm/bootstrap/play/delta2/testcase") |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{null} |
| !8 = !{!9} |
| !9 = !DILocalVariable(name: "a", scope: !4, file: !5, line: 2, type: !10) |
| !10 = !DIBasicType(name: "float", size: 32, align: 32, encoding: DW_ATE_float) |
| !11 = !{i32 2, !"Dwarf Version", i32 4} |
| !12 = !{i32 2, !"Debug Info Version", i32 3} |
| !13 = !{!"clang version 3.7.0 (trunk 238517) (llvm/trunk 238524)"} |
| !14 = !DIExpression() |
| !15 = !DILocation(line: 2, scope: !4) |
| !16 = !DILocation(line: 3, scope: !4) |
| !17 = !DILocation(line: 3, scope: !18) |
| !18 = distinct !DILexicalBlock(scope: !19, file: !5, line: 3) |
| !19 = distinct !DILexicalBlock(scope: !4, file: !5, line: 3) |