| ; REQUIRES: object-emission |
| |
| ; RUN: %llc_dwarf -filetype=obj -O0 < %s | llvm-dwarfdump -debug-dump=info - | FileCheck %s |
| |
| ; This isn't a very pretty test case - I imagine there might be other ways to |
| ; tickle the optimizers into producing the desired code, but I haven't found |
| ; them. |
| |
| ; The issue is when a function is inlined into itself, the inlined argument |
| ; accidentally overwrote the concrete argument and was lost. |
| |
| ; IR generated from the following source compiled with clang -g: |
| ; void fn1(void *); |
| ; void fn2(int, int, int, int); |
| ; void fn3(); |
| ; void fn8(); |
| ; struct C { |
| ; int b; |
| ; void m_fn2() { |
| ; fn8(); |
| ; if (b) fn2(0, 0, 0, 0); |
| ; fn3(); |
| ; } |
| ; }; |
| ; C *x; |
| ; inline void fn7() {} |
| ; void fn6() { |
| ; fn8(); |
| ; x->m_fn2(); |
| ; fn7(); |
| ; } |
| ; void fn3() { fn6(); } |
| ; void fn4() { x->m_fn2(); } |
| ; void fn5() { x->m_fn2(); } |
| |
| ; The definition of C and declaration of C::m_fn2 |
| ; CHECK: DW_TAG_structure_type |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_member |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_subprogram |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_name {{.*}} "m_fn2" |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: [[M_FN2_THIS_DECL:.*]]: DW_TAG_formal_parameter |
| |
| ; The abstract definition of C::m_fn2 |
| ; CHECK: [[M_FN2_ABS_DEF:.*]]: DW_TAG_subprogram |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_specification {{.*}} "_ZN1C5m_fn2Ev" |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_inline |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: [[M_FN2_THIS_ABS_DEF:.*]]: DW_TAG_formal_parameter |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_name {{.*}} "this" |
| |
| ; Skip some other functions |
| ; CHECK: DW_TAG_subprogram |
| ; CHECK: DW_TAG_subprogram |
| ; CHECK: DW_TAG_subprogram |
| |
| ; The concrete definition of C::m_fn2 |
| ; CHECK: DW_TAG_subprogram |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_abstract_origin {{.*}} {[[M_FN2_ABS_DEF]]} "_ZN1C5m_fn2Ev" |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_formal_parameter |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_abstract_origin {{.*}} {[[M_FN2_THIS_ABS_DEF]]} |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; Inlined fn3: |
| ; CHECK: DW_TAG_inlined_subroutine |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; Inlined fn6: |
| ; CHECK: DW_TAG_inlined_subroutine |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; Inlined C::m_fn2: |
| ; CHECK: DW_TAG_inlined_subroutine |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_abstract_origin {{.*}} {[[M_FN2_ABS_DEF]]} "_ZN1C5m_fn2Ev" |
| ; CHECK-NOT: {{DW_TAG|NULL}} |
| ; CHECK: DW_TAG_formal_parameter |
| ; CHECK-NOT: DW_TAG |
| ; CHECK: DW_AT_abstract_origin {{.*}} {[[M_FN2_THIS_ABS_DEF]]} |
| |
| |
| |
| %struct.C = type { i32 } |
| |
| @x = global %struct.C* null, align 8 |
| |
| ; Function Attrs: nounwind |
| define void @_Z3fn6v() #0 { |
| entry: |
| tail call void @_Z3fn8v() #3, !dbg !31 |
| %0 = load %struct.C*, %struct.C** @x, align 8, !dbg !32, !tbaa !33 |
| tail call void @llvm.dbg.value(metadata %struct.C* %0, i64 0, metadata !37, metadata !DIExpression()) #3, !dbg !38 |
| tail call void @_Z3fn8v() #3, !dbg !39 |
| %b.i = getelementptr inbounds %struct.C, %struct.C* %0, i64 0, i32 0, !dbg !40 |
| %1 = load i32, i32* %b.i, align 4, !dbg !40, !tbaa !42 |
| %tobool.i = icmp eq i32 %1, 0, !dbg !40 |
| br i1 %tobool.i, label %_ZN1C5m_fn2Ev.exit, label %if.then.i, !dbg !40 |
| |
| if.then.i: ; preds = %entry |
| tail call void @_Z3fn2iiii(i32 0, i32 0, i32 0, i32 0) #3, !dbg !45 |
| br label %_ZN1C5m_fn2Ev.exit, !dbg !45 |
| |
| _ZN1C5m_fn2Ev.exit: ; preds = %entry, %if.then.i |
| tail call void @_Z3fn3v() #3, !dbg !47 |
| ret void, !dbg !48 |
| } |
| |
| declare void @_Z3fn8v() #1 |
| |
| ; Function Attrs: nounwind |
| define linkonce_odr void @_ZN1C5m_fn2Ev(%struct.C* nocapture readonly %this) #0 align 2 { |
| entry: |
| tail call void @llvm.dbg.value(metadata %struct.C* %this, i64 0, metadata !24, metadata !DIExpression()), !dbg !49 |
| tail call void @_Z3fn8v() #3, !dbg !50 |
| %b = getelementptr inbounds %struct.C, %struct.C* %this, i64 0, i32 0, !dbg !51 |
| %0 = load i32, i32* %b, align 4, !dbg !51, !tbaa !42 |
| %tobool = icmp eq i32 %0, 0, !dbg !51 |
| br i1 %tobool, label %if.end, label %if.then, !dbg !51 |
| |
| if.then: ; preds = %entry |
| tail call void @_Z3fn2iiii(i32 0, i32 0, i32 0, i32 0) #3, !dbg !52 |
| br label %if.end, !dbg !52 |
| |
| if.end: ; preds = %entry, %if.then |
| tail call void @_Z3fn8v() #3, !dbg !53 |
| %1 = load %struct.C*, %struct.C** @x, align 8, !dbg !56, !tbaa !33 |
| tail call void @llvm.dbg.value(metadata %struct.C* %1, i64 0, metadata !57, metadata !DIExpression()) #3, !dbg !58 |
| tail call void @_Z3fn8v() #3, !dbg !59 |
| %b.i.i = getelementptr inbounds %struct.C, %struct.C* %1, i64 0, i32 0, !dbg !60 |
| %2 = load i32, i32* %b.i.i, align 4, !dbg !60, !tbaa !42 |
| %tobool.i.i = icmp eq i32 %2, 0, !dbg !60 |
| br i1 %tobool.i.i, label %_Z3fn6v.exit, label %if.then.i.i, !dbg !60 |
| |
| if.then.i.i: ; preds = %if.end |
| tail call void @_Z3fn2iiii(i32 0, i32 0, i32 0, i32 0) #3, !dbg !61 |
| br label %_Z3fn6v.exit, !dbg !61 |
| |
| _Z3fn6v.exit: ; preds = %if.end, %if.then.i.i |
| tail call void @_Z3fn3v() #3, !dbg !62 |
| ret void, !dbg !63 |
| } |
| |
| ; Function Attrs: nounwind |
| define void @_Z3fn3v() #0 { |
| entry: |
| br label %tailrecurse |
| |
| tailrecurse: ; preds = %tailrecurse.backedge, %entry |
| tail call void @_Z3fn8v() #3, !dbg !64 |
| %0 = load %struct.C*, %struct.C** @x, align 8, !dbg !66, !tbaa !33 |
| tail call void @llvm.dbg.value(metadata %struct.C* %0, i64 0, metadata !67, metadata !DIExpression()) #3, !dbg !68 |
| tail call void @_Z3fn8v() #3, !dbg !69 |
| %b.i.i = getelementptr inbounds %struct.C, %struct.C* %0, i64 0, i32 0, !dbg !70 |
| %1 = load i32, i32* %b.i.i, align 4, !dbg !70, !tbaa !42 |
| %tobool.i.i = icmp eq i32 %1, 0, !dbg !70 |
| br i1 %tobool.i.i, label %tailrecurse.backedge, label %if.then.i.i, !dbg !70 |
| |
| tailrecurse.backedge: ; preds = %tailrecurse, %if.then.i.i |
| br label %tailrecurse |
| |
| if.then.i.i: ; preds = %tailrecurse |
| tail call void @_Z3fn2iiii(i32 0, i32 0, i32 0, i32 0) #3, !dbg !71 |
| br label %tailrecurse.backedge, !dbg !71 |
| } |
| |
| ; Function Attrs: nounwind |
| define void @_Z3fn4v() #0 { |
| entry: |
| %0 = load %struct.C*, %struct.C** @x, align 8, !dbg !72, !tbaa !33 |
| tail call void @_ZN1C5m_fn2Ev(%struct.C* %0), !dbg !72 |
| ret void, !dbg !72 |
| } |
| |
| ; Function Attrs: nounwind |
| define void @_Z3fn5v() #0 { |
| entry: |
| %0 = load %struct.C*, %struct.C** @x, align 8, !dbg !73, !tbaa !33 |
| tail call void @_ZN1C5m_fn2Ev(%struct.C* %0), !dbg !73 |
| ret void, !dbg !73 |
| } |
| |
| declare void @_Z3fn2iiii(i32, i32, i32, i32) #1 |
| |
| ; Function Attrs: nounwind readnone |
| declare void @llvm.dbg.value(metadata, i64, metadata, metadata) #2 |
| |
| attributes #0 = { nounwind "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" "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" "no-realign-stack" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" } |
| attributes #2 = { nounwind readnone } |
| attributes #3 = { nounwind } |
| |
| !llvm.dbg.cu = !{!0} |
| !llvm.module.flags = !{!28, !29} |
| !llvm.ident = !{!30} |
| |
| !0 = !DICompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.6.0 ", isOptimized: true, emissionKind: 1, file: !1, enums: !2, retainedTypes: !3, subprograms: !13, globals: !26, imports: !2) |
| !1 = !DIFile(filename: "<stdin>", directory: "/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce") |
| !2 = !{} |
| !3 = !{!4} |
| !4 = !DICompositeType(tag: DW_TAG_structure_type, name: "C", line: 5, size: 32, align: 32, file: !5, elements: !6, identifier: "_ZTS1C") |
| !5 = !DIFile(filename: "recursive_inlining.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce") |
| !6 = !{!7, !9} |
| !7 = !DIDerivedType(tag: DW_TAG_member, name: "b", line: 6, size: 32, align: 32, file: !5, scope: !"_ZTS1C", baseType: !8) |
| !8 = !DIBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed) |
| !9 = !DISubprogram(name: "m_fn2", linkageName: "_ZN1C5m_fn2Ev", line: 7, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 7, file: !5, scope: !"_ZTS1C", type: !10) |
| !10 = !DISubroutineType(types: !11) |
| !11 = !{null, !12} |
| !12 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !"_ZTS1C") |
| !13 = !{!14, !18, !19, !20, !21, !22} |
| !14 = !DISubprogram(name: "fn6", linkageName: "_Z3fn6v", line: 15, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 15, file: !5, scope: !15, type: !16, function: void ()* @_Z3fn6v, variables: !2) |
| !15 = !DIFile(filename: "recursive_inlining.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce") |
| !16 = !DISubroutineType(types: !17) |
| !17 = !{null} |
| !18 = !DISubprogram(name: "fn3", linkageName: "_Z3fn3v", line: 20, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 20, file: !5, scope: !15, type: !16, function: void ()* @_Z3fn3v, variables: !2) |
| !19 = !DISubprogram(name: "fn4", linkageName: "_Z3fn4v", line: 21, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 21, file: !5, scope: !15, type: !16, function: void ()* @_Z3fn4v, variables: !2) |
| !20 = !DISubprogram(name: "fn5", linkageName: "_Z3fn5v", line: 22, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 22, file: !5, scope: !15, type: !16, function: void ()* @_Z3fn5v, variables: !2) |
| !21 = !DISubprogram(name: "fn7", linkageName: "_Z3fn7v", line: 14, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 14, file: !5, scope: !15, type: !16, variables: !2) |
| !22 = !DISubprogram(name: "m_fn2", linkageName: "_ZN1C5m_fn2Ev", line: 7, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: true, scopeLine: 7, file: !5, scope: !"_ZTS1C", type: !10, function: void (%struct.C*)* @_ZN1C5m_fn2Ev, declaration: !9, variables: !23) |
| !23 = !{!24} |
| !24 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !22, type: !25) |
| !25 = !DIDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !"_ZTS1C") |
| !26 = !{!27} |
| !27 = !DIGlobalVariable(name: "x", line: 13, isLocal: false, isDefinition: true, scope: null, file: !15, type: !25, variable: %struct.C** @x) |
| !28 = !{i32 2, !"Dwarf Version", i32 4} |
| !29 = !{i32 2, !"Debug Info Version", i32 3} |
| !30 = !{!"clang version 3.6.0 "} |
| !31 = !DILocation(line: 16, scope: !14) |
| !32 = !DILocation(line: 17, scope: !14) |
| !33 = !{!34, !34, i64 0} |
| !34 = !{!"any pointer", !35, i64 0} |
| !35 = !{!"omnipotent char", !36, i64 0} |
| !36 = !{!"Simple C/C++ TBAA"} |
| !37 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !22, type: !25) |
| !38 = !DILocation(line: 0, scope: !22, inlinedAt: !32) |
| !39 = !DILocation(line: 8, scope: !22, inlinedAt: !32) |
| !40 = !DILocation(line: 9, scope: !41, inlinedAt: !32) |
| !41 = distinct !DILexicalBlock(line: 9, column: 0, file: !5, scope: !22) |
| !42 = !{!43, !44, i64 0} |
| !43 = !{!"_ZTS1C", !44, i64 0} |
| !44 = !{!"int", !35, i64 0} |
| !45 = !DILocation(line: 9, scope: !46, inlinedAt: !32) |
| !46 = distinct !DILexicalBlock(line: 9, column: 0, file: !5, scope: !41) |
| !47 = !DILocation(line: 10, scope: !22, inlinedAt: !32) |
| !48 = !DILocation(line: 19, scope: !14) |
| !49 = !DILocation(line: 0, scope: !22) |
| !50 = !DILocation(line: 8, scope: !22) |
| !51 = !DILocation(line: 9, scope: !41) |
| !52 = !DILocation(line: 9, scope: !46) |
| !53 = !DILocation(line: 16, scope: !14, inlinedAt: !54) |
| !54 = !DILocation(line: 20, scope: !18, inlinedAt: !55) |
| !55 = !DILocation(line: 10, scope: !22) |
| !56 = !DILocation(line: 17, scope: !14, inlinedAt: !54) |
| !57 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !22, type: !25) |
| !58 = !DILocation(line: 0, scope: !22, inlinedAt: !56) |
| !59 = !DILocation(line: 8, scope: !22, inlinedAt: !56) |
| !60 = !DILocation(line: 9, scope: !41, inlinedAt: !56) |
| !61 = !DILocation(line: 9, scope: !46, inlinedAt: !56) |
| !62 = !DILocation(line: 10, scope: !22, inlinedAt: !56) |
| !63 = !DILocation(line: 11, scope: !22) |
| !64 = !DILocation(line: 16, scope: !14, inlinedAt: !65) |
| !65 = !DILocation(line: 20, scope: !18) |
| !66 = !DILocation(line: 17, scope: !14, inlinedAt: !65) |
| !67 = !DILocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !22, type: !25) |
| !68 = !DILocation(line: 0, scope: !22, inlinedAt: !66) |
| !69 = !DILocation(line: 8, scope: !22, inlinedAt: !66) |
| !70 = !DILocation(line: 9, scope: !41, inlinedAt: !66) |
| !71 = !DILocation(line: 9, scope: !46, inlinedAt: !66) |
| !72 = !DILocation(line: 21, scope: !19) |
| !73 = !DILocation(line: 22, scope: !20) |