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Diffstat (limited to 'test/DebugInfo/X86/split-dwarf-cross-unit-reference.ll')
-rw-r--r--test/DebugInfo/X86/split-dwarf-cross-unit-reference.ll198
1 files changed, 173 insertions, 25 deletions
diff --git a/test/DebugInfo/X86/split-dwarf-cross-unit-reference.ll b/test/DebugInfo/X86/split-dwarf-cross-unit-reference.ll
index c6f0afa27937..ca8525cd335b 100644
--- a/test/DebugInfo/X86/split-dwarf-cross-unit-reference.ll
+++ b/test/DebugInfo/X86/split-dwarf-cross-unit-reference.ll
@@ -1,46 +1,194 @@
-; RUN: llc -mtriple=x86_64-linux -split-dwarf-file=foo.dwo -filetype=obj -o - < %s | llvm-objdump -r - | FileCheck %s
+; 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 %s
+; RUN: llvm-dwarfdump -debug-dump=info.dwo %t | FileCheck --check-prefix=ALL --check-prefix=INFO --check-prefix=DWO --check-prefix=CROSS %s
+; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck --check-prefix=ALL --check-prefix=INFO %s
+
+; RUN: llc -mtriple=x86_64-linux -split-dwarf-file=foo.dwo -filetype=obj -o %t < %s
+; RUN: llvm-objdump -r %t | FileCheck %s
+; RUN: llvm-dwarfdump -debug-dump=info.dwo %t | FileCheck --check-prefix=ALL --check-prefix=DWO --check-prefix=NOCROSS %s
+; RUN: llvm-dwarfdump -debug-dump=info %t | FileCheck --check-prefix=ALL --check-prefix=INFO %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
; CHECK-NOT: .rel{{a?}}.debug_info.dwo
; CHECK: RELOCATION RECORDS FOR [.rel{{a?}}.debug_info]:
; CHECK-NOT: RELOCATION RECORDS
-; Expect one relocation in debug_info, between f3 and f1.
+; Expect one relocation in debug_info, from the inlined f1 in foo to its
+; abstract origin in bar
; CHECK: R_X86_64_32 .debug_info
+; CHECK-NOT: RELOCATION RECORDS
; 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]]}
+
+; ALL: Compile Unit
+; ALL: DW_TAG_compile_unit
+; DWO: DW_AT_name {{.*}} "bar.cpp"
+; NOCROSS: 0x[[BAR_F1:.*]]: DW_TAG_subprogram
+; NOCROSS: DW_AT_name {{.*}} "f1"
+; NOCROSS: 0x[[BAR_F1T:.*]]: DW_TAG_formal_parameter
+; NOCROSS: DW_AT_name {{.*}} "t"
+; NOCROSS: DW_AT_type [DW_FORM_ref4] {{.*}}{0x[[BAR_T1:.*]]}
+; NOCROSS: NULL
+; NOCROSS: 0x[[BAR_T1]]: DW_TAG_structure_type
+; NOCROSS: DW_AT_name {{.*}} "t1"
+; 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[[BAR_T1]]}
+; ALL: DW_TAG_inlined_subroutine
+; INFO: DW_AT_abstract_origin [DW_FORM_ref_addr] (0x00000000[[F1]]
+; NOCROSS: DW_AT_abstract_origin [DW_FORM_ref4] {{.*}}{0x[[BAR_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[[BAR_F1T]]
-; Function Attrs: noinline nounwind optnone uwtable
-define void @_Z2f1v() !dbg !7 {
+%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:
- ret void, !dbg !10
+ %t.i = alloca %struct.t1, align 4
+ call void @llvm.dbg.declare(metadata %struct.t1* %t.i, metadata !15, metadata !16), !dbg !21
+ %t = alloca %struct.t1, align 4
+ %agg.tmp = alloca %struct.t1, align 4
+ %coerce.dive = getelementptr inbounds %struct.t1, %struct.t1* %t, i32 0, i32 0
+ store i32 %t.coerce, i32* %coerce.dive, align 4
+ call void @llvm.dbg.declare(metadata %struct.t1* %t, metadata !23, metadata !16), !dbg !24
+ %0 = bitcast %struct.t1* %agg.tmp to i8*, !dbg !25
+ %1 = bitcast %struct.t1* %t to i8*, !dbg !25
+ call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 4, i32 4, i1 false), !dbg !25
+ %coerce.dive1 = getelementptr inbounds %struct.t1, %struct.t1* %agg.tmp, i32 0, i32 0, !dbg !26
+ %2 = load i32, i32* %coerce.dive1, align 4, !dbg !26
+ %coerce.dive.i = getelementptr inbounds %struct.t1, %struct.t1* %t.i, i32 0, i32 0
+ store i32 %2, i32* %coerce.dive.i, align 4
+ call void @_Z1fv(), !dbg !27
+ ret void, !dbg !28
}
+; Function Attrs: argmemonly nounwind
+declare void @llvm.memcpy.p0i8.p0i8.i64(i8* nocapture writeonly, i8* nocapture readonly, i64, i32, i1) #4
+
; Function Attrs: noinline uwtable
-define void @_Z2f3v() !dbg !13 {
+define void @_Z3bar2t1(i32 %t.coerce) #3 !dbg !29 {
entry:
- call void @_Z2f1v(), !dbg !14
- ret void, !dbg !16
+ %t.i = alloca %struct.t1, align 4
+ call void @llvm.dbg.declare(metadata %struct.t1* %t.i, metadata !15, metadata !16), !dbg !30
+ %t = alloca %struct.t1, align 4
+ %agg.tmp = alloca %struct.t1, align 4
+ %coerce.dive = getelementptr inbounds %struct.t1, %struct.t1* %t, i32 0, i32 0
+ store i32 %t.coerce, i32* %coerce.dive, align 4
+ call void @llvm.dbg.declare(metadata %struct.t1* %t, metadata !32, metadata !16), !dbg !33
+ %0 = bitcast %struct.t1* %agg.tmp to i8*, !dbg !34
+ %1 = bitcast %struct.t1* %t to i8*, !dbg !34
+ call void @llvm.memcpy.p0i8.p0i8.i64(i8* %0, i8* %1, i64 4, i32 4, i1 false), !dbg !34
+ %coerce.dive1 = getelementptr inbounds %struct.t1, %struct.t1* %agg.tmp, i32 0, i32 0, !dbg !35
+ %2 = load i32, i32* %coerce.dive1, align 4, !dbg !35
+ %coerce.dive.i = getelementptr inbounds %struct.t1, %struct.t1* %t.i, i32 0, i32 0
+ store i32 %2, i32* %coerce.dive.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}
+!llvm.module.flags = !{!6, !7}
-!0 = distinct !DICompileUnit(language: DW_LANG_C_plus_plus, file: !1, producer: "clang version 5.0.0 (trunk 301051) (llvm/trunk 301062)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
-!1 = !DIFile(filename: "a.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch")
+!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 301051) (llvm/trunk 301062)", isOptimized: false, runtimeVersion: 0, emissionKind: FullDebug, enums: !2)
-!4 = !DIFile(filename: "b.cpp", directory: "/usr/local/google/home/blaikie/dev/scratch")
-!5 = !{!"clang version 5.0.0 (trunk 301051) (llvm/trunk 301062)"}
-!6 = !{i32 2, !"Debug Info Version", i32 3}
-!7 = distinct !DISubprogram(name: "f1", linkageName: "_Z2f1v", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
-!8 = !DISubroutineType(types: !9)
-!9 = !{null}
-!10 = !DILocation(line: 1, scope: !7)
-!11 = distinct !DISubprogram(name: "f2", linkageName: "_Z2f2v", scope: !1, file: !1, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !0, variables: !2)
-!12 = !DILocation(line: 1, scope: !11)
-!13 = distinct !DISubprogram(name: "f3", linkageName: "_Z2f3v", scope: !4, file: !4, line: 1, type: !8, isLocal: false, isDefinition: true, scopeLine: 1, flags: DIFlagPrototyped, isOptimized: false, unit: !3, variables: !2)
-!14 = !DILocation(line: 1, scope: !11, inlinedAt: !15)
-!15 = distinct !DILocation(line: 1, scope: !13)
-!16 = !DILocation(line: 1, scope: !13)
+!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, variables: !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, variables: !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, variables: !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)