diff options
Diffstat (limited to 'llvm/test/CodeGen/X86/debug-loclists.ll')
| -rw-r--r-- | llvm/test/CodeGen/X86/debug-loclists.ll | 219 |
1 files changed, 97 insertions, 122 deletions
diff --git a/llvm/test/CodeGen/X86/debug-loclists.ll b/llvm/test/CodeGen/X86/debug-loclists.ll index e111d12625c..2b72f677b0d 100644 --- a/llvm/test/CodeGen/X86/debug-loclists.ll +++ b/llvm/test/CodeGen/X86/debug-loclists.ll @@ -1,144 +1,119 @@ -; RUN: llc -mtriple=x86_64-pc-linux -filetype=obj -o %t < %s -; RUN: llvm-dwarfdump -v %t | FileCheck %s - -; CHECK: 0x00000033: DW_TAG_formal_parameter [3] -; CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset] (0x0000000c -; CHECK-NEXT: [0x0000000000000000, 0x0000000000000004): DW_OP_breg5 RDI+0 -; CHECK-NEXT: [0x0000000000000004, 0x0000000000000012): DW_OP_breg3 RBX+0) -; CHECK-NEXT: DW_AT_name [DW_FORM_strx1] (indexed (0000000e) string = "a") -; CHECK-NEXT: DW_AT_decl_file [DW_FORM_data1] ("/home/folder{{\\|\/}}test.cc") -; CHECK-NEXT: DW_AT_decl_line [DW_FORM_data1] (6) -; CHECK-NEXT: DW_AT_type [DW_FORM_ref4] (cu + 0x0040 => {0x00000040} "A") +; RUN: llc -mtriple=x86_64-pc-linux -filetype=obj -function-sections -o %t < %s +; RUN: llvm-dwarfdump -v -debug-info -debug-loclists %t | FileCheck %s + +; CHECK: DW_TAG_variable +; FIXME: Use DW_FORM_loclistx to reduce relocations +; CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset] (0x0000000c +; CHECK-NEXT: [0x0000000000000000, 0x0000000000000003): DW_OP_consts +3, DW_OP_stack_value +; CHECK-NEXT: [0x0000000000000003, 0x0000000000000004): DW_OP_consts +4, DW_OP_stack_value) +; CHECK-NEXT: DW_AT_name {{.*}} "y" + +; CHECK: DW_TAG_variable +; FIXME: Use DW_FORM_loclistx to reduce relocations +; CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset] (0x0000001d +; CHECK-NEXT: Addr idx 0 (w/ length 3): DW_OP_consts +5, DW_OP_stack_value) +; CHECK-NEXT: DW_AT_name {{.*}} "x" + +; CHECK: DW_TAG_variable +; FIXME: Use DW_FORM_loclistx to reduce relocations +; CHECK-NEXT: DW_AT_location [DW_FORM_sec_offset] (0x00000025 +; CHECK-NEXT: [0x0000000000000003, 0x0000000000000004): DW_OP_reg0 RAX) +; CHECK-NEXT: DW_AT_name {{.*}} "r" ; CHECK: .debug_loclists contents: -; CHECK-NEXT: 0x00000000: locations list header: length = 0x00000015, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000 +; CHECK-NEXT: 0x00000000: locations list header: length = 0x00000029, version = 0x0005, addr_size = 0x08, seg_size = 0x00, offset_entry_count = 0x00000000 + +; Don't use startx_length if there's more than one entry, because the shared +; base address will be useful for both the range that does start at the start of +; the function, and the one that doesn't. + ; CHECK-NEXT: 0x0000000c: -; CHECK-NEXT: DW_LLE_offset_pair(0x0000000000000000, 0x0000000000000004) -; CHECK-NEXT: => [0x0000000000000000, 0x0000000000000004): DW_OP_breg5 RDI+0 -; CHECK-NEXT: DW_LLE_offset_pair(0x0000000000000004, 0x0000000000000012) -; CHECK-NEXT: => [0x0000000000000004, 0x0000000000000012): DW_OP_breg3 RBX+0 - -; There is no way to use llvm-dwarfdump atm (2018, october) to verify the DW_LLE_* codes emited, -; because dumper is not yet implements that. Use asm code to do this check instead. -; -; RUN: llc -mtriple=x86_64-pc-linux -filetype=asm < %s -o - | FileCheck %s --check-prefix=ASM -; ASM: .section .debug_loclists,"",@progbits -; ASM-NEXT: .long .Ldebug_loclist_table_end0-.Ldebug_loclist_table_start0 # Length -; ASM-NEXT: .Ldebug_loclist_table_start0: -; ASM-NEXT: .short 5 # Version -; ASM-NEXT: .byte 8 # Address size -; ASM-NEXT: .byte 0 # Segment selector size -; ASM-NEXT: .long 0 # Offset entry count -; ASM-NEXT: .Lloclists_table_base0: -; ASM-NEXT: .Ldebug_loc0: -; ASM-NEXT: .byte 4 # DW_LLE_offset_pair -; ASM-NEXT: .uleb128 .Lfunc_begin0-.Lfunc_begin0 # starting offset -; ASM-NEXT: .uleb128 .Ltmp0-.Lfunc_begin0 # ending offset -; ASM-NEXT: .byte 2 # Loc expr size -; ASM-NEXT: .byte 117 # DW_OP_breg5 -; ASM-NEXT: .byte 0 # 0 -; ASM-NEXT: .byte 4 # DW_LLE_offset_pair -; ASM-NEXT: .uleb128 .Ltmp0-.Lfunc_begin0 # starting offset -; ASM-NEXT: .uleb128 .Ltmp1-.Lfunc_begin0 # ending offset -; ASM-NEXT: .byte 2 # Loc expr size -; ASM-NEXT: .byte 115 # DW_OP_breg3 -; ASM-NEXT: .byte 0 # 0 -; ASM-NEXT: .byte 0 # DW_LLE_end_of_list -; ASM-NEXT: .Ldebug_loclist_table_end0: - -; ModuleID = 'test.cc' -source_filename = "test.cc" -target datalayout = "e-m:e-i64:64-f80:128-n8:16:32:64-S128" -target triple = "x86_64-unknown-linux-gnu" - -%struct.A = type { i32 (...)** } - -@_ZTV1A = dso_local unnamed_addr constant { [4 x i8*] } { [4 x i8*] [i8* null, i8* bitcast ({ i8*, i8* }* @_ZTI1A to i8*), i8* bitcast (void (%struct.A*)* @_ZN1A3fooEv to i8*), i8* bitcast (void (%struct.A*)* @_ZN1A3barEv to i8*)] }, align 8 -@_ZTVN10__cxxabiv117__class_type_infoE = external dso_local global i8* -@_ZTS1A = dso_local constant [3 x i8] c"1A\00", align 1 -@_ZTI1A = dso_local constant { i8*, i8* } { i8* bitcast (i8** getelementptr inbounds (i8*, i8** @_ZTVN10__cxxabiv117__class_type_infoE, i64 2) to i8*), i8* getelementptr inbounds ([3 x i8], [3 x i8]* @_ZTS1A, i32 0, i32 0) }, align 8 - -; Function Attrs: noinline optnone uwtable -define dso_local void @_Z3baz1A(%struct.A* %a) #0 !dbg !7 { -entry: - call void @llvm.dbg.declare(metadata %struct.A* %a, metadata !23, metadata !DIExpression()), !dbg !24 - call void @_ZN1A3fooEv(%struct.A* %a), !dbg !25 - call void @_ZN1A3barEv(%struct.A* %a), !dbg !26 - ret void, !dbg !27 -} +; CHECK-NEXT: DW_LLE_base_addressx(0x0000000000000000) +; CHECK-NEXT: DW_LLE_offset_pair (0x0000000000000000, 0x0000000000000003) +; CHECK-NEXT: => [0x0000000000000000, 0x0000000000000003): DW_OP_consts +3, DW_OP_stack_value +; CHECK-NEXT: DW_LLE_offset_pair (0x0000000000000003, 0x0000000000000004) +; CHECK-NEXT: => [0x0000000000000003, 0x0000000000000004): DW_OP_consts +4, DW_OP_stack_value +; CHECK-NEXT: DW_LLE_end_of_list () -; Function Attrs: nounwind readnone speculatable -declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 +; Show that startx_length can be used when the address range starts at the start of the function. -; Function Attrs: noinline nounwind optnone uwtable -define dso_local void @_ZN1A3fooEv(%struct.A* %this) unnamed_addr #2 align 2 !dbg !28 { -entry: - %this.addr = alloca %struct.A*, align 8 - store %struct.A* %this, %struct.A** %this.addr, align 8 - call void @llvm.dbg.declare(metadata %struct.A** %this.addr, metadata !29, metadata !DIExpression()), !dbg !31 - %this1 = load %struct.A*, %struct.A** %this.addr, align 8 - ret void, !dbg !32 -} +; CHECK: 0x0000001d: +; CHECK-NEXT: DW_LLE_startx_length(0x0000000000000000, 0x0000000000000003) +; CHECK-NEXT: => Addr idx 0 (w/ length 3): DW_OP_consts +5, DW_OP_stack_value +; CHECK-NEXT: DW_LLE_end_of_list () + +; And use a base address when the range doesn't start at an existing/useful +; address in the pool. + +; CHECK: 0x00000025: +; CHECK-NEXT: DW_LLE_base_addressx(0x0000000000000000) +; CHECK-NEXT: DW_LLE_offset_pair (0x0000000000000003, 0x0000000000000004) +; CHECK-NEXT: => [0x0000000000000003, 0x0000000000000004): DW_OP_reg0 RAX +; CHECK-NEXT: DW_LLE_end_of_list () + +; Built with clang -O3 -ffunction-sections from source: +; +; int f1(int i, int j) { +; int x = 5; +; int y = 3; +; int r = i + j; +; int undef; +; x = undef; +; y = 4; +; return r; +; } +; void f2() { +; } -; Function Attrs: noinline nounwind optnone uwtable -define dso_local void @_ZN1A3barEv(%struct.A* %this) unnamed_addr #2 align 2 !dbg !33 { +; Function Attrs: norecurse nounwind readnone uwtable +define dso_local i32 @_Z2f1ii(i32 %i, i32 %j) local_unnamed_addr !dbg !7 { entry: - %this.addr = alloca %struct.A*, align 8 - store %struct.A* %this, %struct.A** %this.addr, align 8 - call void @llvm.dbg.declare(metadata %struct.A** %this.addr, metadata !34, metadata !DIExpression()), !dbg !35 - %this1 = load %struct.A*, %struct.A** %this.addr, align 8 - ret void, !dbg !36 + call void @llvm.dbg.value(metadata i32 %i, metadata !12, metadata !DIExpression()), !dbg !18 + call void @llvm.dbg.value(metadata i32 %j, metadata !13, metadata !DIExpression()), !dbg !18 + call void @llvm.dbg.value(metadata i32 5, metadata !14, metadata !DIExpression()), !dbg !18 + call void @llvm.dbg.value(metadata i32 3, metadata !15, metadata !DIExpression()), !dbg !18 + %add = add nsw i32 %j, %i, !dbg !19 + call void @llvm.dbg.value(metadata i32 %add, metadata !16, metadata !DIExpression()), !dbg !18 + call void @llvm.dbg.value(metadata i32 undef, metadata !14, metadata !DIExpression()), !dbg !18 + call void @llvm.dbg.value(metadata i32 4, metadata !15, metadata !DIExpression()), !dbg !18 + ret i32 %add, !dbg !20 } -; Function Attrs: noinline norecurse nounwind optnone uwtable -define dso_local i32 @main() #3 !dbg !37 { +; Function Attrs: norecurse nounwind readnone uwtable +define dso_local void @_Z2f2v() local_unnamed_addr !dbg !21 { entry: - %retval = alloca i32, align 4 - store i32 0, i32* %retval, align 4 - ret i32 0, !dbg !38 + ret void, !dbg !24 } +; Function Attrs: nounwind readnone speculatable willreturn +declare void @llvm.dbg.value(metadata, metadata, metadata) !llvm.dbg.cu = !{!0} !llvm.module.flags = !{!3, !4, !5} !llvm.ident = !{!6} -!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 8.0.0 (trunk 344035)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) -!1 = !DIFile(filename: "test.cc", directory: "/home/folder", checksumkind: CSK_MD5, checksum: "e0f357ad6dcb791a774a0dae55baf5e7") +!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus_14, file: !1, producer: "clang version 10.0.0 (trunk 374581) (llvm/trunk 374579)", isOptimized: true, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, nameTableKind: None) +!1 = !DIFile(filename: "loc2.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch", checksumkind: CSK_MD5, checksum: "91e0069c680e2a63f4f885ec93f5d07e") !2 = !{} !3 = !{i32 2, !"Dwarf Version", i32 5} !4 = !{i32 2, !"Debug Info Version", i32 3} !5 = !{i32 1, !"wchar_size", i32 4} -!6 = !{!"clang version 8.0.0 (trunk 344035)"} -!7 = distinct !DISubprogram(name: "baz", linkageName: "_Z3baz1A", scope: !1, file: !1, line: 6, type: !8, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) +!6 = !{!"clang version 10.0.0 (trunk 374581) (llvm/trunk 374579)"} +!7 = distinct !DISubprogram(name: "f1", linkageName: "_Z2f1ii", scope: !1, file: !1, line: 1, type: !8, scopeLine: 1, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !11) !8 = !DISubroutineType(types: !9) -!9 = !{null, !10} -!10 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "A", file: !1, line: 1, size: 64, flags: DIFlagTypePassByReference, elements: !11, vtableHolder: !10, identifier: "_ZTS1A") -!11 = !{!12, !18, !22} -!12 = !DIDerivedType(tag: DW_TAG_member, name: "_vptr$A", scope: !1, file: !1, baseType: !13, size: 64, flags: DIFlagArtificial) -!13 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !14, size: 64) -!14 = !DIDerivedType(tag: DW_TAG_pointer_type, name: "__vtbl_ptr_type", baseType: !15, size: 64) -!15 = !DISubroutineType(types: !16) -!16 = !{!17} -!17 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) -!18 = !DISubprogram(name: "foo", linkageName: "_ZN1A3fooEv", scope: !10, file: !1, line: 2, type: !19, isLocal: false, isDefinition: false, scopeLine: 2, containingType: !10, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 0, flags: DIFlagPrototyped, isOptimized: false) -!19 = !DISubroutineType(types: !20) -!20 = !{null, !21} -!21 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64, flags: DIFlagArtificial | DIFlagObjectPointer) -!22 = !DISubprogram(name: "bar", linkageName: "_ZN1A3barEv", scope: !10, file: !1, line: 3, type: !19, isLocal: false, isDefinition: false, scopeLine: 3, containingType: !10, virtuality: DW_VIRTUALITY_virtual, virtualIndex: 1, flags: DIFlagPrototyped, isOptimized: false) -!23 = !DILocalVariable(name: "a", arg: 1, scope: !7, file: !1, line: 6, type: !10) -!24 = !DILocation(line: 6, column: 19, scope: !7) -!25 = !DILocation(line: 7, column: 6, scope: !7) -!26 = !DILocation(line: 8, column: 6, scope: !7) -!27 = !DILocation(line: 9, column: 1, scope: !7) -!28 = distinct !DISubprogram(name: "foo", linkageName: "_ZN1A3fooEv", scope: !10, file: !1, line: 12, type: !19, isLocal: false, isDefinition: true, scopeLine: 12, flags: DIFlagPrototyped, isOptimized: false, unit: !0, declaration: !18, retainedNodes: !2) -!29 = !DILocalVariable(name: "this", arg: 1, scope: !28, type: !30, flags: DIFlagArtificial | DIFlagObjectPointer) -!30 = !DIDerivedType(tag: DW_TAG_pointer_type, baseType: !10, size: 64) -!31 = !DILocation(line: 0, scope: !28) -!32 = !DILocation(line: 12, column: 16, scope: !28) -!33 = distinct !DISubprogram(name: "bar", linkageName: "_ZN1A3barEv", scope: !10, file: !1, line: 13, type: !19, isLocal: false, isDefinition: true, scopeLine: 13, flags: DIFlagPrototyped, isOptimized: false, unit: !0, declaration: !22, retainedNodes: !2) -!34 = !DILocalVariable(name: "this", arg: 1, scope: !33, type: !30, flags: DIFlagArtificial | DIFlagObjectPointer) -!35 = !DILocation(line: 0, scope: !33) -!36 = !DILocation(line: 13, column: 16, scope: !33) -!37 = distinct !DISubprogram(name: "main", scope: !1, file: !1, line: 15, type: !15, isLocal: false, isDefinition: true, scopeLine: 15, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) -!38 = !DILocation(line: 16, column: 3, scope: !37) +!9 = !{!10, !10, !10} +!10 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) +!11 = !{!12, !13, !14, !15, !16, !17} +!12 = !DILocalVariable(name: "i", arg: 1, scope: !7, file: !1, line: 1, type: !10) +!13 = !DILocalVariable(name: "j", arg: 2, scope: !7, file: !1, line: 1, type: !10) +!14 = !DILocalVariable(name: "x", scope: !7, file: !1, line: 2, type: !10) +!15 = !DILocalVariable(name: "y", scope: !7, file: !1, line: 3, type: !10) +!16 = !DILocalVariable(name: "r", scope: !7, file: !1, line: 4, type: !10) +!17 = !DILocalVariable(name: "undef", scope: !7, file: !1, line: 5, type: !10) +!18 = !DILocation(line: 0, scope: !7) +!19 = !DILocation(line: 4, column: 13, scope: !7) +!20 = !DILocation(line: 8, column: 3, scope: !7) +!21 = distinct !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 10, type: !22, scopeLine: 10, flags: DIFlagPrototyped | DIFlagAllCallsDescribed, spFlags: DISPFlagDefinition | DISPFlagOptimized, unit: !0, retainedNodes: !2) +!22 = !DISubroutineType(types: !23) +!23 = !{null} +!24 = !DILocation(line: 11, column: 1, scope: !21) |
