| ; RUN: llc -mtriple=x86_64-linux -split-dwarf-cross-cu-references -split-dwarf-file=foo.dwo -filetype=obj -o %t < %s |
| ; RUN: llvm-objdump -r %t | FileCheck --check-prefix=CHECK --check-prefix=RELO_CROSS %s |
| ; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL --check-prefix=DWO --check-prefix=CROSS %s |
| ; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL %s |
| |
| ; RUN: llc -mtriple=x86_64-linux -split-dwarf-file=foo.dwo -filetype=obj -o %t < %s |
| ; RUN: llvm-objdump -r %t | FileCheck --check-prefix=CHECK %s |
| ; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL --check-prefix=DWO --check-prefix=NOCROSS %s |
| ; RUN: llvm-dwarfdump -v -debug-info %t | FileCheck --check-prefix=ALL %s |
| |
| ; Testing cross-CU references for types, subprograms, and variables |
| ; Built from code something like this: |
| ; foo.cpp: |
| ; struct t1 { int i; }; |
| ; void f(); |
| ; __attribute__((always_inline)) void f1(t1 t) { |
| ; f(); |
| ; } |
| ; void foo(t1 t) { |
| ; f1(t); |
| ; } |
| ; bar.cpp: |
| ; struct t1 { int i; }; |
| ; void f1(t1); |
| ; void bar(t1 t) { |
| ; f1(t); |
| ; } |
| ; $ clang++-tot -emit-llvm -S {foo,bar}.cpp -g |
| ; $ llvm-link-tot {foo,bar}.ll -S -o foobar.ll |
| ; $ clang++-tot -emit-llvm foobar.ll -o foobar.opt.ll -S -c |
| ; |
| ; Then manually removing the original f1 definition, to simplify the DWARF a bit |
| ; (so it only has the inlined definitions, no concrete definition) |
| |
| ; Check that: |
| ; * no relocations are emitted for the debug_info.dwo section no matter what |
| ; * one debug_info->debug_info relocation in debug_info no matter what (for |
| ; split dwarf inlining) |
| ; * debug_info uses relocations and ref_addr no matter what |
| ; * debug_info.dwo uses relocations for types as well as abstract subprograms |
| ; and variables when -split-dwarf-cross-cu-references is used |
| ; * debug_info.dwo contains duplicate types, abstract subprograms and abstract |
| ; variables otherwise to avoid the need for cross-cu references |
| |
| ; DWO: .debug_info.dwo contents: |
| ; CHECK-NOT: .rel{{a?}}.debug_info.dwo |
| ; CHECK: RELOCATION RECORDS FOR [.debug_info]: |
| ; CHECK-NOT: RELOCATION RECORDS |
| ; Expect one relocation in debug_info, from the inlined f1 in foo to its |
| ; abstract origin in bar |
| ; RELO_CROSS: R_X86_64_32 .debug_info |
| ; Expect no relocations in debug_info when disabling multiple CUs in Split DWARF |
| ; CHECK-NOT: .debug_info |
| ; CHECK: RELOCATION RECORDS |
| ; CHECK-NOT: .rel{{a?}}.debug_info.dwo |
| |
| ; ALL: Compile Unit |
| ; ALL: DW_TAG_compile_unit |
| ; DWO: DW_AT_name {{.*}} "foo.cpp" |
| ; ALL: 0x[[F1:.*]]: DW_TAG_subprogram |
| ; ALL: DW_AT_name {{.*}} "f1" |
| ; DWO: 0x[[F1T:.*]]: DW_TAG_formal_parameter |
| ; DWO: DW_AT_name {{.*}} "t" |
| ; DWO: DW_AT_type [DW_FORM_ref4] {{.*}}{0x[[T1:.*]]} |
| ; DWO: NULL |
| ; DWO: 0x[[T1]]: DW_TAG_structure_type |
| ; DWO: DW_AT_name {{.*}} "t1" |
| ; ALL: DW_TAG_subprogram |
| ; ALL: DW_AT_name {{.*}} "foo" |
| ; DWO: DW_TAG_formal_parameter |
| ; DWO: DW_AT_name {{.*}} "t" |
| ; DWO: DW_AT_type [DW_FORM_ref4] {{.*}}{0x[[T1]]} |
| ; ALL: DW_TAG_inlined_subroutine |
| ; ALL: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1]]} |
| ; DWO: DW_TAG_formal_parameter |
| ; DWO: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1T]]} |
| |
| ; NOCROSS-NOT: DW_TAG_compile_unit |
| ; CROSS: Compile Unit |
| ; CROSS: DW_TAG_compile_unit |
| ; CROSS: DW_AT_name {{.*}} "bar.cpp" |
| ; ALL: DW_TAG_subprogram |
| ; ALL: DW_AT_name {{.*}} "bar" |
| ; DWO: DW_TAG_formal_parameter |
| ; DWO: DW_AT_name {{.*}} "t" |
| ; CROSS: DW_AT_type [DW_FORM_ref_addr] (0x00000000[[T1]] |
| ; NOCROSS: DW_AT_type [DW_FORM_ref4] {{.*}}{0x[[T1]]} |
| ; ALL: DW_TAG_inlined_subroutine |
| ; CROSS: DW_AT_abstract_origin [DW_FORM_ref_addr] (0x00000000[[F1]] |
| ; NOCROSS: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1]]} |
| ; DWO: DW_TAG_formal_parameter |
| ; CROSS: DW_AT_abstract_origin [DW_FORM_ref_addr] (0x00000000[[F1T]] |
| ; NOCROSS: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[F1T]] |
| |
| %struct.t1 = type { i32 } |
| |
| ; Function Attrs: nounwind readnone speculatable |
| declare void @llvm.dbg.declare(metadata, metadata, metadata) #1 |
| |
| declare void @_Z1fv() #2 |
| |
| ; Function Attrs: noinline uwtable |
| define void @_Z3foo2t1(i32 %t.coerce) #3 !dbg !20 { |
| entry: |
| %t.i = alloca %struct.t1, align 4 |
| call void @llvm.dbg.declare(metadata ptr %t.i, metadata !15, metadata !16), !dbg !21 |
| %t = alloca %struct.t1, align 4 |
| %agg.tmp = alloca %struct.t1, align 4 |
| store i32 %t.coerce, ptr %t, align 4 |
| call void @llvm.dbg.declare(metadata ptr %t, metadata !23, metadata !16), !dbg !24 |
| call void @llvm.memcpy.p0.p0.i64(ptr align 4 %agg.tmp, ptr align 4 %t, i64 4, i1 false), !dbg !25 |
| %0 = load i32, ptr %agg.tmp, align 4, !dbg !26 |
| store i32 %0, ptr %t.i, align 4 |
| call void @_Z1fv(), !dbg !27 |
| ret void, !dbg !28 |
| } |
| |
| ; Function Attrs: argmemonly nounwind |
| declare void @llvm.memcpy.p0.p0.i64(ptr nocapture writeonly, ptr nocapture readonly, i64, i1) #4 |
| |
| ; Function Attrs: noinline uwtable |
| define void @_Z3bar2t1(i32 %t.coerce) #3 !dbg !29 { |
| entry: |
| %t.i = alloca %struct.t1, align 4 |
| call void @llvm.dbg.declare(metadata ptr %t.i, metadata !15, metadata !16), !dbg !30 |
| %t = alloca %struct.t1, align 4 |
| %agg.tmp = alloca %struct.t1, align 4 |
| store i32 %t.coerce, ptr %t, align 4 |
| call void @llvm.dbg.declare(metadata ptr %t, metadata !32, metadata !16), !dbg !33 |
| call void @llvm.memcpy.p0.p0.i64(ptr align 4 %agg.tmp, ptr align 4 %t, i64 4, i1 false), !dbg !34 |
| %0 = load i32, ptr %agg.tmp, align 4, !dbg !35 |
| store i32 %0, ptr %t.i, align 4 |
| call void @_Z1fv(), !dbg !36 |
| ret void, !dbg !37 |
| } |
| |
| !llvm.dbg.cu = !{!0, !3} |
| !llvm.ident = !{!5, !5} |
| !llvm.module.flags = !{!6, !7} |
| |
| !0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 (trunk 302809) (llvm/trunk 302815)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: true) |
| !1 = !DIFile(filename: "foo.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch") |
| !2 = !{} |
| !3 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !4, producer: "clang version 5.0.0 (trunk 302809) (llvm/trunk 302815)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2, splitDebugInlining: true) |
| !4 = !DIFile(filename: "bar.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch") |
| !5 = !{!"clang version 5.0.0 (trunk 302809) (llvm/trunk 302815)"} |
| !6 = !{i32 2, !"Dwarf Version", i32 4} |
| !7 = !{i32 2, !"Debug Info Version", i32 3} |
| !8 = distinct !DISubprogram(name: "f1", linkageName: "_Z2f12t1", scope: !1, file: !1, line: 3, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !9 = !DISubroutineType(types: !10) |
| !10 = !{null, !11} |
| !11 = distinct !DICompositeType(tag: DW_TAG_structure_type, name: "t1", file: !1, line: 1, size: 32, elements: !12, identifier: "_ZTS2t1") |
| !12 = !{!13} |
| !13 = !DIDerivedType(tag: DW_TAG_member, name: "i", scope: !11, file: !1, line: 1, baseType: !14, size: 32) |
| !14 = !DIBasicType(name: "int", size: 32, encoding: DW_ATE_signed) |
| !15 = !DILocalVariable(name: "t", arg: 1, scope: !8, file: !1, line: 3, type: !11) |
| !16 = !DIExpression() |
| !17 = !DILocation(line: 3, column: 43, scope: !8) |
| !18 = !DILocation(line: 4, column: 3, scope: !8) |
| !19 = !DILocation(line: 5, column: 1, scope: !8) |
| !20 = distinct !DISubprogram(name: "foo", linkageName: "_Z3foo2t1", scope: !1, file: !1, line: 6, type: !9, isLocal: false, isDefinition: true, scopeLine: 6, flags: DIFlagPrototyped, isOptimized: false, unit: !0, retainedNodes: !2) |
| !21 = !DILocation(line: 3, column: 43, scope: !8, inlinedAt: !22) |
| !22 = distinct !DILocation(line: 7, column: 3, scope: !20) |
| !23 = !DILocalVariable(name: "t", arg: 1, scope: !20, file: !1, line: 6, type: !11) |
| !24 = !DILocation(line: 6, column: 13, scope: !20) |
| !25 = !DILocation(line: 7, column: 6, scope: !20) |
| !26 = !DILocation(line: 7, column: 3, scope: !20) |
| !27 = !DILocation(line: 4, column: 3, scope: !8, inlinedAt: !22) |
| !28 = !DILocation(line: 8, column: 1, scope: !20) |
| !29 = distinct !DISubprogram(name: "bar", linkageName: "_Z3bar2t1", scope: !4, file: !4, line: 3, type: !9, isLocal: false, isDefinition: true, scopeLine: 3, flags: DIFlagPrototyped, isOptimized: false, unit: !3, retainedNodes: !2) |
| !30 = !DILocation(line: 3, column: 43, scope: !8, inlinedAt: !31) |
| !31 = distinct !DILocation(line: 4, column: 3, scope: !29) |
| !32 = !DILocalVariable(name: "t", arg: 1, scope: !29, file: !4, line: 3, type: !11) |
| !33 = !DILocation(line: 3, column: 13, scope: !29) |
| !34 = !DILocation(line: 4, column: 6, scope: !29) |
| !35 = !DILocation(line: 4, column: 3, scope: !29) |
| !36 = !DILocation(line: 4, column: 3, scope: !8, inlinedAt: !31) |
| !37 = !DILocation(line: 5, column: 1, scope: !29) |