mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-19 19:30:10 +00:00
b056aa798d
Move the specialized metadata nodes for the new debug info hierarchy
into place, finishing off PR22464. I've done bootstraps (and all that)
and I'm confident this commit is NFC as far as DWARF output is
concerned. Let me know if I'm wrong :).
The code changes are fairly mechanical:
- Bumped the "Debug Info Version".
- `DIBuilder` now creates the appropriate subclass of `MDNode`.
- Subclasses of DIDescriptor now expect to hold their "MD"
counterparts (e.g., `DIBasicType` expects `MDBasicType`).
- Deleted a ton of dead code in `AsmWriter.cpp` and `DebugInfo.cpp`
for printing comments.
- Big update to LangRef to describe the nodes in the new hierarchy.
Feel free to make it better.
Testcase changes are enormous. There's an accompanying clang commit on
its way.
If you have out-of-tree debug info testcases, I just broke your build.
- `upgrade-specialized-nodes.sh` is attached to PR22564. I used it to
update all the IR testcases.
- Unfortunately I failed to find way to script the updates to CHECK
lines, so I updated all of these by hand. This was fairly painful,
since the old CHECKs are difficult to reason about. That's one of
the benefits of the new hierarchy.
This work isn't quite finished, BTW. The `DIDescriptor` subclasses are
almost empty wrappers, but not quite: they still have loose casting
checks (see the `RETURN_FROM_RAW()` macro). Once they're completely
gutted, I'll rename the "MD" classes to "DI" and kill the wrappers. I
also expect to make a few schema changes now that it's easier to reason
about everything.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@231082 91177308-0d34-0410-b5e6-96231b3b80d8
278 lines
13 KiB
LLVM
278 lines
13 KiB
LLVM
; REQUIRES: object-emission
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; RUN: llc < %s -o %t -filetype=obj -O0 -generate-type-units -mtriple=x86_64-unknown-linux-gnu
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; RUN: llvm-dwarfdump %t | FileCheck --check-prefix=CHECK --check-prefix=SINGLE %s
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; RUN: llvm-readobj -s -t %t | FileCheck --check-prefix=OBJ_SINGLE %s
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; RUN: llc < %s -split-dwarf=Enable -o %t -filetype=obj -O0 -generate-type-units -mtriple=x86_64-unknown-linux-gnu
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; RUN: llvm-dwarfdump %t | FileCheck --check-prefix=CHECK --check-prefix=FISSION %s
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; RUN: llvm-readobj -s -t %t | FileCheck --check-prefix=OBJ_FISSION %s
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; Generated from bar.cpp:
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; #line 1 "bar.h"
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; struct bar {};
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; #line 2 "bar.cpp"
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; struct bar b;
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; void foo(void) {
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; struct baz {};
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; baz b;
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; }
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; namespace echidna {
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; namespace capybara {
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; namespace mongoose {
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; class fluffy {
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; int a;
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; int b;
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; };
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; fluffy animal;
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; }
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; }
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; }
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; namespace {
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; struct walrus {
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; walrus() {}
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; };
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; }
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; walrus w;
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; struct wombat {
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; struct {
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; int a;
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; int b;
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; } a_b;
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; };
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; wombat wom;
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; SINGLE-LABEL: .debug_info contents:
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; FISSION-LABEL: .debug_info.dwo contents:
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; CHECK: Compile Unit: length = [[CU_SIZE:[0-9a-f]+]]
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; CHECK: [[BAR:^0x........]]: DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_declaration
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; CHECK-NEXT: DW_AT_signature {{.*}} (0x1d02f3be30cc5688)
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; CHECK: [[FLUFFY:^0x........]]: DW_TAG_class_type
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; CHECK-NEXT: DW_AT_declaration
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; CHECK-NEXT: DW_AT_signature {{.*}} (0xb04af47397402e77)
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; Ensure the CU-local type 'walrus' is not placed in a type unit.
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; CHECK: [[WALRUS:^0x........]]: DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_name{{.*}}"walrus"
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; CHECK-NEXT: DW_AT_byte_size
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; CHECK-NEXT: DW_AT_decl_file
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; CHECK-NEXT: DW_AT_decl_line
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; CHECK: [[WOMBAT:^0x........]]: DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_declaration
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; CHECK-NEXT: DW_AT_signature {{.*}} (0xfd756cee88f8a118)
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; SINGLE-LABEL: .debug_types contents:
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; FISSION-NOT: .debug_types contents:
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; FISSION-LABEL: .debug_types.dwo contents:
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; Check that we generate a hash for bar and the value.
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; CHECK-NOT: type_signature
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; CHECK-LABEL: type_signature = 0x1d02f3be30cc5688
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; CHECK: DW_TAG_structure_type
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; FISSION-NEXT: DW_AT_name {{.*}} ( indexed {{.*}} "bar"
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; SINGLE-NEXT: DW_AT_name {{.*}} "bar"
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; Check that we generate a hash for fluffy and the value.
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; CHECK-NOT: type_signature
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; CHECK-LABEL: type_signature = 0xb04af47397402e77
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; CHECK-NOT: DW_AT_GNU_odr_signature [DW_FORM_data8] (0x9a0124d5a0c21c52)
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; CHECK: DW_TAG_namespace
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; CHECK-NEXT: DW_AT_name{{.*}}"echidna"
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; CHECK: DW_TAG_namespace
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; CHECK-NEXT: DW_AT_name{{.*}}"capybara"
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; CHECK: DW_TAG_namespace
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; CHECK-NEXT: DW_AT_name{{.*}}"mongoose"
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; CHECK: DW_TAG_class_type
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; CHECK-NEXT: DW_AT_name{{.*}}"fluffy"
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; Check that we generate a hash for wombat and the value, but not for the
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; anonymous type contained within.
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; CHECK-NOT: type_signature
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; CHECK-LABEL: type_signature = 0xfd756cee88f8a118
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; CHECK-NOT: DW_AT_GNU_odr_signature [DW_FORM_data8] (0x685bcc220141e9d7)
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; CHECK: DW_TAG_structure_type
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; CHECK-NEXT: DW_AT_name{{.*}}"wombat"
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; CHECK-NOT: type_signature
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; CHECK-LABEL: type_signature = 0xe94f6d3843e62d6b
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; CHECK: DW_TAG_type_unit
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; CHECK: DW_AT_stmt_list [DW_FORM_sec_offset] (0x00000000)
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; CHECK-NOT: NULL
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; CHECK-NOT: DW_AT_GNU_odr_signature
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; CHECK: DW_TAG_structure_type
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; The signature for the outer 'wombat' type
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; CHECK: DW_AT_signature [DW_FORM_ref_sig8] (0xfd756cee88f8a118)
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; CHECK: DW_TAG_structure_type
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; CHECK-NOT: DW_AT_name
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; CHECK-NOT: DW_AT_GNU_odr_signature
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; CHECK: DW_TAG_member
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; CHECK-NEXT: DW_AT_name{{.*}}"a"
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; CHECK-LABEL: .debug_line contents:
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; CHECK: Line table prologue
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; CHECK-NOT: file_names[
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; SINGLE: file_names{{.*}} bar.h
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; CHECK: file_names{{.*}} bar.cpp
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; CHECK-NOT: file_names[
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; CHECK-LABEL: .debug_line.dwo contents:
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; FISSION: Line table prologue
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; FISSION: opcode_base: 1
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; FISSION-NOT: standard_opcode_lengths
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; FISSION-NOT: include_directories
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; FISSION-NOT: file_names[
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; FISSION: file_names{{.*}} bar.h
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; FISSION: file_names{{.*}} bar.cpp
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; FISSION-NOT: file_names[
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; CHECK-LABEL: .debug_str contents:
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; Use the unit size as a rough hash/identifier for the unit we're dealing with
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; it happens to be unambiguous at the moment, but it's hardly ideal.
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; CHECK-LABEL: .debug_pubtypes contents:
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; Don't emit pubtype entries for type DIEs in the compile unit that just indirect to a type unit.
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; CHECK-NEXT: unit_size = [[CU_SIZE]]
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; CHECK-NEXT: Offset Name
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; CHECK-DAG: [[BAR]] "bar"
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; CHECK-DAG: [[WALRUS]] "(anonymous namespace)::walrus"
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; CHECK-DAG: [[WOMBAT]] "wombat"
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; CHECK-DAG: [[FLUFFY]] "echidna::capybara::mongoose::fluffy"
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; Make sure debug_types are in comdat groups. This could be more rigid to check
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; that they're the right comdat groups (each type in a separate comdat group,
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; etc)
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; OBJ_SINGLE: Name: .debug_types (
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; OBJ_SINGLE-NOT: }
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; OBJ_SINGLE: SHF_GROUP
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; Fission type units don't go in comdat groups, since their linker is debug
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; aware it's handled using the debug info semantics rather than raw ELF object
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; semantics.
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; OBJ_FISSION: Name: .debug_types.dwo (
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; OBJ_FISSION-NOT: SHF_GROUP
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; OBJ_FISSION: }
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%struct.bar = type { i8 }
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%"class.echidna::capybara::mongoose::fluffy" = type { i32, i32 }
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%"struct.<anonymous namespace>::walrus" = type { i8 }
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%struct.wombat = type { %struct.anon }
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%struct.anon = type { i32, i32 }
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%struct.baz = type { i8 }
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@b = global %struct.bar zeroinitializer, align 1
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@_ZN7echidna8capybara8mongoose6animalE = global %"class.echidna::capybara::mongoose::fluffy" zeroinitializer, align 4
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@w = internal global %"struct.<anonymous namespace>::walrus" zeroinitializer, align 1
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@wom = global %struct.wombat zeroinitializer, align 4
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@llvm.global_ctors = appending global [1 x { i32, void ()* }] [{ i32, void ()* } { i32 65535, void ()* @_GLOBAL__I_a }]
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; Function Attrs: nounwind uwtable
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define void @_Z3foov() #0 {
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entry:
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%b = alloca %struct.baz, align 1
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call void @llvm.dbg.declare(metadata %struct.baz* %b, metadata !46, metadata !MDExpression()), !dbg !48
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ret void, !dbg !49
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}
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; Function Attrs: nounwind readnone
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declare void @llvm.dbg.declare(metadata, metadata, metadata) #1
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define internal void @__cxx_global_var_init() section ".text.startup" {
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entry:
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call void @_ZN12_GLOBAL__N_16walrusC2Ev(%"struct.<anonymous namespace>::walrus"* @w), !dbg !50
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ret void, !dbg !50
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}
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; Function Attrs: nounwind uwtable
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define internal void @_ZN12_GLOBAL__N_16walrusC2Ev(%"struct.<anonymous namespace>::walrus"* %this) unnamed_addr #0 align 2 {
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entry:
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%this.addr = alloca %"struct.<anonymous namespace>::walrus"*, align 8
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store %"struct.<anonymous namespace>::walrus"* %this, %"struct.<anonymous namespace>::walrus"** %this.addr, align 8
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call void @llvm.dbg.declare(metadata %"struct.<anonymous namespace>::walrus"** %this.addr, metadata !51, metadata !MDExpression()), !dbg !53
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%this1 = load %"struct.<anonymous namespace>::walrus"*, %"struct.<anonymous namespace>::walrus"** %this.addr
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ret void, !dbg !54
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}
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define internal void @_GLOBAL__I_a() section ".text.startup" {
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entry:
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call void @__cxx_global_var_init(), !dbg !55
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ret void, !dbg !55
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}
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attributes #0 = { nounwind uwtable "less-precise-fpmad"="false" "no-frame-pointer-elim"="true" "no-frame-pointer-elim-non-leaf" "no-infs-fp-math"="false" "no-nans-fp-math"="false" "stack-protector-buffer-size"="8" "unsafe-fp-math"="false" "use-soft-float"="false" }
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attributes #1 = { nounwind readnone }
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!43, !44}
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!llvm.ident = !{!45}
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!0 = !MDCompileUnit(language: DW_LANG_C_plus_plus, producer: "clang version 3.5 ", isOptimized: false, splitDebugFilename: "bar.dwo", emissionKind: 0, file: !1, enums: !2, retainedTypes: !3, subprograms: !21, globals: !38, imports: !2)
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!1 = !MDFile(filename: "bar.cpp", directory: "/tmp/dbginfo")
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!2 = !{}
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!3 = !{!4, !6, !14, !17}
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!4 = !MDCompositeType(tag: DW_TAG_structure_type, name: "bar", line: 1, size: 8, align: 8, file: !5, elements: !2, identifier: "_ZTS3bar")
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!5 = !MDFile(filename: "bar.h", directory: "/tmp/dbginfo")
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!6 = !MDCompositeType(tag: DW_TAG_class_type, name: "fluffy", line: 13, size: 64, align: 32, file: !1, scope: !7, elements: !10, identifier: "_ZTSN7echidna8capybara8mongoose6fluffyE")
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!7 = !MDNamespace(name: "mongoose", line: 12, file: !1, scope: !8)
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!8 = !MDNamespace(name: "capybara", line: 11, file: !1, scope: !9)
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!9 = !MDNamespace(name: "echidna", line: 10, file: !1, scope: null)
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!10 = !{!11, !13}
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!11 = !MDDerivedType(tag: DW_TAG_member, name: "a", line: 14, size: 32, align: 32, flags: DIFlagPrivate, file: !1, scope: !"_ZTSN7echidna8capybara8mongoose6fluffyE", baseType: !12)
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!12 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!13 = !MDDerivedType(tag: DW_TAG_member, name: "b", line: 15, size: 32, align: 32, offset: 32, flags: DIFlagPrivate, file: !1, scope: !"_ZTSN7echidna8capybara8mongoose6fluffyE", baseType: !12)
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!14 = !MDCompositeType(tag: DW_TAG_structure_type, name: "wombat", line: 31, size: 64, align: 32, file: !1, elements: !15, identifier: "_ZTS6wombat")
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!15 = !{!16}
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!16 = !MDDerivedType(tag: DW_TAG_member, name: "a_b", line: 35, size: 64, align: 32, file: !1, scope: !"_ZTS6wombat", baseType: !"_ZTSN6wombatUt_E")
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!17 = !MDCompositeType(tag: DW_TAG_structure_type, line: 32, size: 64, align: 32, file: !1, scope: !"_ZTS6wombat", elements: !18, identifier: "_ZTSN6wombatUt_E")
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!18 = !{!19, !20}
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!19 = !MDDerivedType(tag: DW_TAG_member, name: "a", line: 33, size: 32, align: 32, file: !1, scope: !"_ZTSN6wombatUt_E", baseType: !12)
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!20 = !MDDerivedType(tag: DW_TAG_member, name: "b", line: 34, size: 32, align: 32, offset: 32, file: !1, scope: !"_ZTSN6wombatUt_E", baseType: !12)
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!21 = !{!22, !26, !27, !36}
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!22 = !MDSubprogram(name: "foo", linkageName: "_Z3foov", line: 5, isLocal: false, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 5, file: !1, scope: !23, type: !24, function: void ()* @_Z3foov, variables: !2)
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!23 = !MDFile(filename: "bar.cpp", directory: "/tmp/dbginfo")
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!24 = !MDSubroutineType(types: !25)
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!25 = !{null}
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!26 = !MDSubprogram(name: "__cxx_global_var_init", line: 29, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 29, file: !1, scope: !23, type: !24, function: void ()* @__cxx_global_var_init, variables: !2)
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!27 = !MDSubprogram(name: "walrus", linkageName: "_ZN12_GLOBAL__N_16walrusC2Ev", line: 25, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 25, file: !1, scope: !28, type: !32, function: void (%"struct.<anonymous namespace>::walrus"*)* @_ZN12_GLOBAL__N_16walrusC2Ev, declaration: !31, variables: !2)
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!28 = !MDCompositeType(tag: DW_TAG_structure_type, name: "walrus", line: 24, size: 8, align: 8, file: !1, scope: !29, elements: !30)
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!29 = !MDNamespace(line: 23, file: !1, scope: null)
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!30 = !{!31}
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!31 = !MDSubprogram(name: "walrus", line: 25, isLocal: false, isDefinition: false, virtualIndex: 6, flags: DIFlagPrototyped, isOptimized: false, scopeLine: 25, file: !1, scope: !28, type: !32, variables: !35)
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!32 = !MDSubroutineType(types: !33)
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!33 = !{null, !34}
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!34 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, flags: DIFlagArtificial | DIFlagObjectPointer, baseType: !28)
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!35 = !{i32 786468}
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!36 = !MDSubprogram(name: "", linkageName: "_GLOBAL__I_a", line: 25, isLocal: true, isDefinition: true, virtualIndex: 6, flags: DIFlagArtificial, isOptimized: false, scopeLine: 25, file: !1, scope: !23, type: !37, function: void ()* @_GLOBAL__I_a, variables: !2)
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!37 = !MDSubroutineType(types: !2)
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!38 = !{!39, !40, !41, !42}
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!39 = !MDGlobalVariable(name: "b", line: 3, isLocal: false, isDefinition: true, scope: null, file: !23, type: !4, variable: %struct.bar* @b)
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!40 = !MDGlobalVariable(name: "animal", linkageName: "_ZN7echidna8capybara8mongoose6animalE", line: 18, isLocal: false, isDefinition: true, scope: !7, file: !23, type: !6, variable: %"class.echidna::capybara::mongoose::fluffy"* @_ZN7echidna8capybara8mongoose6animalE)
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!41 = !MDGlobalVariable(name: "w", line: 29, isLocal: true, isDefinition: true, scope: null, file: !23, type: !28, variable: %"struct.<anonymous namespace>::walrus"* @w)
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!42 = !MDGlobalVariable(name: "wom", line: 38, isLocal: false, isDefinition: true, scope: null, file: !23, type: !14, variable: %struct.wombat* @wom)
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!43 = !{i32 2, !"Dwarf Version", i32 4}
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!44 = !{i32 1, !"Debug Info Version", i32 3}
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!45 = !{!"clang version 3.5 "}
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!46 = !MDLocalVariable(tag: DW_TAG_auto_variable, name: "b", line: 7, scope: !22, file: !23, type: !47)
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!47 = !MDCompositeType(tag: DW_TAG_structure_type, name: "baz", line: 6, size: 8, align: 8, file: !1, scope: !22, elements: !2)
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!48 = !MDLocation(line: 7, scope: !22)
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!49 = !MDLocation(line: 8, scope: !22)
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!50 = !MDLocation(line: 29, scope: !26)
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!51 = !MDLocalVariable(tag: DW_TAG_arg_variable, name: "this", arg: 1, flags: DIFlagArtificial | DIFlagObjectPointer, scope: !27, type: !52)
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!52 = !MDDerivedType(tag: DW_TAG_pointer_type, size: 64, align: 64, baseType: !28)
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!53 = !MDLocation(line: 0, scope: !27)
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!54 = !MDLocation(line: 25, scope: !27)
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!55 = !MDLocation(line: 25, scope: !36)
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