diff options
Diffstat (limited to 'test/DebugInfo/X86/recursive_inlining.ll')
| -rw-r--r-- | test/DebugInfo/X86/recursive_inlining.ll | 275 |
1 files changed, 275 insertions, 0 deletions
diff --git a/test/DebugInfo/X86/recursive_inlining.ll b/test/DebugInfo/X86/recursive_inlining.ll new file mode 100644 index 0000000..251f04e --- /dev/null +++ b/test/DebugInfo/X86/recursive_inlining.ll @@ -0,0 +1,275 @@ +; 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** @x, align 8, !dbg !32, !tbaa !33 + tail call void @llvm.dbg.value(metadata !{%struct.C* %0}, i64 0, metadata !37, metadata !{metadata !"0x102"}) #3, !dbg !38 + tail call void @_Z3fn8v() #3, !dbg !39 + %b.i = getelementptr inbounds %struct.C* %0, i64 0, i32 0, !dbg !40 + %1 = load 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 !{metadata !"0x102"}), !dbg !49 + tail call void @_Z3fn8v() #3, !dbg !50 + %b = getelementptr inbounds %struct.C* %this, i64 0, i32 0, !dbg !51 + %0 = load 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** @x, align 8, !dbg !56, !tbaa !33 + tail call void @llvm.dbg.value(metadata !{%struct.C* %1}, i64 0, metadata !57, metadata !{metadata !"0x102"}) #3, !dbg !58 + tail call void @_Z3fn8v() #3, !dbg !59 + %b.i.i = getelementptr inbounds %struct.C* %1, i64 0, i32 0, !dbg !60 + %2 = load 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** @x, align 8, !dbg !66, !tbaa !33 + tail call void @llvm.dbg.value(metadata !{%struct.C* %0}, i64 0, metadata !67, metadata !{metadata !"0x102"}) #3, !dbg !68 + tail call void @_Z3fn8v() #3, !dbg !69 + %b.i.i = getelementptr inbounds %struct.C* %0, i64 0, i32 0, !dbg !70 + %1 = load 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** @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** @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 = metadata !{metadata !"0x11\004\00clang version 3.6.0 \001\00\000\00\001", metadata !1, metadata !2, metadata !3, metadata !13, metadata !26, metadata !2} ; [ DW_TAG_compile_unit ] [/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce/<stdin>] [DW_LANG_C_plus_plus] +!1 = metadata !{metadata !"<stdin>", metadata !"/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce"} +!2 = metadata !{} +!3 = metadata !{metadata !4} +!4 = metadata !{metadata !"0x13\00C\005\0032\0032\000\000\000", metadata !5, null, null, metadata !6, null, null, metadata !"_ZTS1C"} ; [ DW_TAG_structure_type ] [C] [line 5, size 32, align 32, offset 0] [def] [from ] +!5 = metadata !{metadata !"recursive_inlining.cpp", metadata !"/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce"} +!6 = metadata !{metadata !7, metadata !9} +!7 = metadata !{metadata !"0xd\00b\006\0032\0032\000\000", metadata !5, metadata !"_ZTS1C", metadata !8} ; [ DW_TAG_member ] [b] [line 6, size 32, align 32, offset 0] [from int] +!8 = metadata !{metadata !"0x24\00int\000\0032\0032\000\000\005", null, null} ; [ DW_TAG_base_type ] [int] [line 0, size 32, align 32, offset 0, enc DW_ATE_signed] +!9 = metadata !{metadata !"0x2e\00m_fn2\00m_fn2\00_ZN1C5m_fn2Ev\007\000\000\000\006\00256\001\007", metadata !5, metadata !"_ZTS1C", metadata !10, null, null, null, i32 0, null} ; [ DW_TAG_subprogram ] [line 7] [m_fn2] +!10 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !11, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] +!11 = metadata !{null, metadata !12} +!12 = metadata !{metadata !"0xf\00\000\0064\0064\000\001088", null, null, metadata !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [artificial] [from _ZTS1C] +!13 = metadata !{metadata !14, metadata !18, metadata !19, metadata !20, metadata !21, metadata !22} +!14 = metadata !{metadata !"0x2e\00fn6\00fn6\00_Z3fn6v\0015\000\001\000\006\00256\001\0015", metadata !5, metadata !15, metadata !16, null, void ()* @_Z3fn6v, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 15] [def] [fn6] +!15 = metadata !{metadata !"0x29", metadata !5} ; [ DW_TAG_file_type ] [/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce/recursive_inlining.cpp] +!16 = metadata !{metadata !"0x15\00\000\000\000\000\000\000", i32 0, null, null, metadata !17, null, null, null} ; [ DW_TAG_subroutine_type ] [line 0, size 0, align 0, offset 0] [from ] +!17 = metadata !{null} +!18 = metadata !{metadata !"0x2e\00fn3\00fn3\00_Z3fn3v\0020\000\001\000\006\00256\001\0020", metadata !5, metadata !15, metadata !16, null, void ()* @_Z3fn3v, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 20] [def] [fn3] +!19 = metadata !{metadata !"0x2e\00fn4\00fn4\00_Z3fn4v\0021\000\001\000\006\00256\001\0021", metadata !5, metadata !15, metadata !16, null, void ()* @_Z3fn4v, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 21] [def] [fn4] +!20 = metadata !{metadata !"0x2e\00fn5\00fn5\00_Z3fn5v\0022\000\001\000\006\00256\001\0022", metadata !5, metadata !15, metadata !16, null, void ()* @_Z3fn5v, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 22] [def] [fn5] +!21 = metadata !{metadata !"0x2e\00fn7\00fn7\00_Z3fn7v\0014\000\001\000\006\00256\001\0014", metadata !5, metadata !15, metadata !16, null, null, null, null, metadata !2} ; [ DW_TAG_subprogram ] [line 14] [def] [fn7] +!22 = metadata !{metadata !"0x2e\00m_fn2\00m_fn2\00_ZN1C5m_fn2Ev\007\000\001\000\006\00256\001\007", metadata !5, metadata !"_ZTS1C", metadata !10, null, void (%struct.C*)* @_ZN1C5m_fn2Ev, null, metadata !9, metadata !23} ; [ DW_TAG_subprogram ] [line 7] [def] [m_fn2] +!23 = metadata !{metadata !24} +!24 = metadata !{metadata !"0x101\00this\0016777216\001088", metadata !22, null, metadata !25} ; [ DW_TAG_arg_variable ] [this] [line 0] +!25 = metadata !{metadata !"0xf\00\000\0064\0064\000\000", null, null, metadata !"_ZTS1C"} ; [ DW_TAG_pointer_type ] [line 0, size 64, align 64, offset 0] [from _ZTS1C] +!26 = metadata !{metadata !27} +!27 = metadata !{metadata !"0x34\00x\00x\00\0013\000\001", null, metadata !15, metadata !25, %struct.C** @x, null} ; [ DW_TAG_variable ] [x] [line 13] [def] +!28 = metadata !{i32 2, metadata !"Dwarf Version", i32 4} +!29 = metadata !{i32 2, metadata !"Debug Info Version", i32 2} +!30 = metadata !{metadata !"clang version 3.6.0 "} +!31 = metadata !{i32 16, i32 0, metadata !14, null} +!32 = metadata !{i32 17, i32 0, metadata !14, null} +!33 = metadata !{metadata !34, metadata !34, i64 0} +!34 = metadata !{metadata !"any pointer", metadata !35, i64 0} +!35 = metadata !{metadata !"omnipotent char", metadata !36, i64 0} +!36 = metadata !{metadata !"Simple C/C++ TBAA"} +!37 = metadata !{metadata !"0x101\00this\0016777216\001088", metadata !22, null, metadata !25, metadata !32} ; [ DW_TAG_arg_variable ] [this] [line 0] +!38 = metadata !{i32 0, i32 0, metadata !22, metadata !32} +!39 = metadata !{i32 8, i32 0, metadata !22, metadata !32} +!40 = metadata !{i32 9, i32 0, metadata !41, metadata !32} +!41 = metadata !{metadata !"0xb\009\000\000", metadata !5, metadata !22} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce/recursive_inlining.cpp] +!42 = metadata !{metadata !43, metadata !44, i64 0} +!43 = metadata !{metadata !"_ZTS1C", metadata !44, i64 0} +!44 = metadata !{metadata !"int", metadata !35, i64 0} +!45 = metadata !{i32 9, i32 0, metadata !46, metadata !32} +!46 = metadata !{metadata !"0xb\009\000\001", metadata !5, metadata !41} ; [ DW_TAG_lexical_block ] [/usr/local/google/home/blaikie/dev/scratch/missing_concrete_variable_on_darwin/reduce/recursive_inlining.cpp] +!47 = metadata !{i32 10, i32 0, metadata !22, metadata !32} +!48 = metadata !{i32 19, i32 0, metadata !14, null} +!49 = metadata !{i32 0, i32 0, metadata !22, null} +!50 = metadata !{i32 8, i32 0, metadata !22, null} +!51 = metadata !{i32 9, i32 0, metadata !41, null} +!52 = metadata !{i32 9, i32 0, metadata !46, null} +!53 = metadata !{i32 16, i32 0, metadata !14, metadata !54} +!54 = metadata !{i32 20, i32 0, metadata !18, metadata !55} +!55 = metadata !{i32 10, i32 0, metadata !22, null} +!56 = metadata !{i32 17, i32 0, metadata !14, metadata !54} +!57 = metadata !{metadata !"0x101\00this\0016777216\001088", metadata !22, null, metadata !25, metadata !56} ; [ DW_TAG_arg_variable ] [this] [line 0] +!58 = metadata !{i32 0, i32 0, metadata !22, metadata !56} +!59 = metadata !{i32 8, i32 0, metadata !22, metadata !56} +!60 = metadata !{i32 9, i32 0, metadata !41, metadata !56} +!61 = metadata !{i32 9, i32 0, metadata !46, metadata !56} +!62 = metadata !{i32 10, i32 0, metadata !22, metadata !56} +!63 = metadata !{i32 11, i32 0, metadata !22, null} +!64 = metadata !{i32 16, i32 0, metadata !14, metadata !65} +!65 = metadata !{i32 20, i32 0, metadata !18, null} +!66 = metadata !{i32 17, i32 0, metadata !14, metadata !65} +!67 = metadata !{metadata !"0x101\00this\0016777216\001088", metadata !22, null, metadata !25, metadata !66} ; [ DW_TAG_arg_variable ] [this] [line 0] +!68 = metadata !{i32 0, i32 0, metadata !22, metadata !66} +!69 = metadata !{i32 8, i32 0, metadata !22, metadata !66} +!70 = metadata !{i32 9, i32 0, metadata !41, metadata !66} +!71 = metadata !{i32 9, i32 0, metadata !46, metadata !66} +!72 = metadata !{i32 21, i32 0, metadata !19, null} +!73 = metadata !{i32 22, i32 0, metadata !20, null} |