| ; REQUIRES: object-emission |
| |
| ; RUN: %llc_dwarf -O0 -filetype=obj < %s | llvm-dwarfdump -v -debug-info - | FileCheck %s |
| |
| ; Build from the following source with clang -O2. |
| |
| ; The important details are that 'x's abstract definition is first built during |
| ; the definition of 'b', where the parameter to 'x' is constant and so 'x's 's' |
| ; variable is optimized away. No abstract definition DIE for 's' is constructed. |
| ; Then, during 'a' emission, the abstract DbgVariable for 's' is created, but |
| ; the abstract DIE isn't (since the abstract definition for 'b' is already |
| ; built). This results in 's' inlined in 'a' being emitted with its name, line, |
| ; file there, rather than referencing an abstract definition. |
| |
| ; extern int t; |
| ; |
| ; void f(int); |
| ; |
| ; inline void x(bool b) { |
| ; if (b) { |
| ; int s = t; |
| ; f(s); |
| ; } |
| ; f(0); |
| ; } |
| ; |
| ; void b() { |
| ; x(false); |
| ; } |
| ; |
| ; void a(bool u) { |
| ; x(u); |
| ; } |
| |
| ; CHECK: [[X_DECL:.*]]: DW_TAG_subprogram |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_name {{.*}} "x" |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_formal_parameter |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_name {{.*}} "b" |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_lexical_block |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_variable |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_name {{.*}} "s" |
| |
| ; CHECK: DW_TAG_subprogram |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_name {{.*}} "b" |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_inlined_subroutine |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_abstract_origin {{.*}} {[[X_DECL]]} |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_formal_parameter |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_abstract_origin {{.*}} "b" |
| ; Notice 'x's local variable 's' is missing. Not necessarily a bug here, |
| ; since it's been optimized entirely away and it should be described in |
| ; abstract subprogram. |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: NULL |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: NULL |
| |
| ; CHECK: DW_TAG_subprogram |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_name {{.*}} "a" |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_formal_parameter |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_inlined_subroutine |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_abstract_origin {{.*}} {[[X_DECL]]} |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; FIXME: This formal parameter goes missing at least at -O2 (& on |
| ; mips/powerpc), maybe before that. Perhaps SelectionDAG is to blame (and |
| ; fastisel succeeds). |
| ; CHECK: DW_TAG_formal_parameter |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_abstract_origin {{.*}} "b" |
| |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_lexical_block |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_variable |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_abstract_origin {{.*}} "s" |
| |
| @t = external global i32 |
| |
| ; Function Attrs: uwtable |
| define void @_Z1bv() #0 !dbg !4 { |
| entry: |
| tail call void @llvm.dbg.value(metadata i1 false, metadata !25, metadata !DIExpression()), !dbg !27 |
| tail call void @_Z1fi(i32 0), !dbg !28 |
| ret void, !dbg !29 |
| } |
| |
| ; Function Attrs: uwtable |
| define void @_Z1ab(i1 zeroext %u) #0 !dbg !8 { |
| entry: |
| tail call void @llvm.dbg.value(metadata i1 %u, metadata !13, metadata !DIExpression()), !dbg !30 |
| tail call void @llvm.dbg.value(metadata i1 %u, metadata !31, metadata !DIExpression()), !dbg !33 |
| br i1 %u, label %if.then.i, label %_Z1xb.exit, !dbg !34 |
| |
| if.then.i: ; preds = %entry |
| %0 = load i32, i32* @t, align 4, !dbg !35, !tbaa !36 |
| tail call void @llvm.dbg.value(metadata i32 %0, metadata !40, metadata !DIExpression()), !dbg !35 |
| tail call void @_Z1fi(i32 %0), !dbg !41 |
| br label %_Z1xb.exit, !dbg !42 |
| |
| _Z1xb.exit: ; preds = %entry, %if.then.i |
| tail call void @_Z1fi(i32 0), !dbg !43 |
| ret void, !dbg !44 |
| } |
| |
| declare void @_Z1fi(i32) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, metadata, metadata) #2 |
| |
| attributes #0 = { uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #1 = { "less-precise-fpmad"="false" "no-frame-pointer-elim"="false" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #2 = { nounwind readnone } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!21, !22} |
| !llvm.ident = !{!23} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5.0 ", isOptimized: true, emissionKind: FullDebug, file: !1, enums: !2, retainedTypes: !2, globals: !2, imports: !2) |
| !1 = !DIFile(filename: "missing-abstract-variables.cc", directory: "/tmp/dbginfo") |
| !2 = !{} |
| !4 = distinct !DISubprogram(name: "b", linkageName: "_Z1bv", line: 13, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 13, file: !1, scope: !5, type: !6, retainedNodes: !2) |
| !5 = !DIFile(filename: "missing-abstract-variables.cc", directory: "/tmp/dbginfo") |
| !6 = !DISubroutineType(types: !7) |
| !7 = !{null} |
| !8 = distinct !DISubprogram(name: "a", linkageName: "_Z1ab", line: 17, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 17, file: !1, scope: !5, type: !9, retainedNodes: !12) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{null, !11} |
| !11 = !DIBasicType(tag: DW_TAG_base_type, name: "bool", size: 8, align: 8, encoding: DW_ATE_boolean) |
| !12 = !{!13} |
| !13 = !DILocalVariable(name: "u", line: 17, arg: 1, scope: !8, file: !5, type: !11) |
| !14 = distinct !DISubprogram(name: "x", linkageName: "_Z1xb", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, unit: !0, scopeLine: 5, file: !1, scope: !5, type: !9, retainedNodes: !15) |
| !15 = !{!16, !17} |
| !16 = !DILocalVariable(name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11) |
| !17 = !DILocalVariable(name: "s", line: 7, scope: !18, file: !5, type: !20) |
| !18 = distinct !DILexicalBlock(line: 6, column: 0, file: !1, scope: !19) |
| !19 = distinct !DILexicalBlock(line: 6, column: 0, file: !1, scope: !14) |
| !20 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !21 = !{i32 2, !"Dwarf Version", i32 4} |
| !22 = !{i32 2, !"Debug Info Version", i32 3} |
| !23 = !{!"clang version 3.5.0 "} |
| !24 = !{i1 false} |
| !25 = !DILocalVariable(name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11) |
| !26 = !DILocation(line: 14, scope: !4) |
| !27 = !DILocation(line: 5, scope: !14, inlinedAt: !26) |
| !28 = !DILocation(line: 10, scope: !14, inlinedAt: !26) |
| !29 = !DILocation(line: 15, scope: !4) |
| !30 = !DILocation(line: 17, scope: !8) |
| !31 = !DILocalVariable(name: "b", line: 5, arg: 1, scope: !14, file: !5, type: !11) |
| !32 = !DILocation(line: 18, scope: !8) |
| !33 = !DILocation(line: 5, scope: !14, inlinedAt: !32) |
| !34 = !DILocation(line: 6, scope: !19, inlinedAt: !32) |
| !35 = !DILocation(line: 7, scope: !18, inlinedAt: !32) |
| !36 = !{!37, !37, i64 0} |
| !37 = !{!"int", !38, i64 0} |
| !38 = !{!"omnipotent char", !39, i64 0} |
| !39 = !{!"Simple C/C++ TBAA"} |
| !40 = !DILocalVariable(name: "s", line: 7, scope: !18, file: !5, type: !20) |
| !41 = !DILocation(line: 8, scope: !18, inlinedAt: !32) |
| !42 = !DILocation(line: 9, scope: !18, inlinedAt: !32) |
| !43 = !DILocation(line: 10, scope: !14, inlinedAt: !32) |
| !44 = !DILocation(line: 19, scope: !8) |
