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https://github.com/c64scene-ar/llvm-6502.git
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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
115 lines
4.8 KiB
LLVM
115 lines
4.8 KiB
LLVM
; RUN: llc -split-dwarf=Enable -O0 %s -mtriple=x86_64-unknown-linux-gnu -filetype=obj -o %t
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; RUN: llvm-dwarfdump -debug-dump=all %t | FileCheck %s
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; RUN: llvm-readobj --relocations %t | FileCheck --check-prefix=OBJ %s
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; RUN: llvm-objdump -h %t | FileCheck --check-prefix=HDR %s
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@a = common global i32 0, align 4
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!llvm.dbg.cu = !{!0}
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!llvm.module.flags = !{!9}
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!0 = !MDCompileUnit(language: DW_LANG_C99, producer: "clang version 3.3 (trunk 169021) (llvm/trunk 169020)", isOptimized: false, splitDebugFilename: "baz.dwo", emissionKind: 0, file: !8, enums: !1, retainedTypes: !1, subprograms: !1, globals: !3, imports: !1)
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!1 = !{}
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!3 = !{!5}
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!5 = !MDGlobalVariable(name: "a", line: 1, isLocal: false, isDefinition: true, scope: null, file: !6, type: !7, variable: i32* @a)
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!6 = !MDFile(filename: "baz.c", directory: "/usr/local/google/home/echristo/tmp")
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!7 = !MDBasicType(tag: DW_TAG_base_type, name: "int", size: 32, align: 32, encoding: DW_ATE_signed)
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!8 = !MDFile(filename: "baz.c", directory: "/usr/local/google/home/echristo/tmp")
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; Check that the skeleton compile unit contains the proper attributes:
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; This DIE has the following attributes: DW_AT_comp_dir, DW_AT_stmt_list,
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; DW_AT_low_pc, DW_AT_high_pc, DW_AT_ranges, DW_AT_dwo_name, DW_AT_dwo_id,
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; DW_AT_ranges_base, DW_AT_addr_base.
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; CHECK: .debug_abbrev contents:
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; CHECK: Abbrev table for offset: 0x00000000
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; CHECK: [1] DW_TAG_compile_unit DW_CHILDREN_no
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; CHECK: DW_AT_stmt_list DW_FORM_sec_offset
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; CHECK: DW_AT_GNU_dwo_name DW_FORM_strp
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; CHECK: DW_AT_comp_dir DW_FORM_strp
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; CHECK: DW_AT_GNU_dwo_id DW_FORM_data8
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; Check that we're using the right forms.
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; CHECK: .debug_abbrev.dwo contents:
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; CHECK: Abbrev table for offset: 0x00000000
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; CHECK: [1] DW_TAG_compile_unit DW_CHILDREN_yes
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; CHECK: DW_AT_producer DW_FORM_GNU_str_index
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; CHECK: DW_AT_language DW_FORM_data2
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; CHECK: DW_AT_name DW_FORM_GNU_str_index
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; CHECK-NOT: DW_AT_low_pc
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; CHECK-NOT: DW_AT_stmt_list
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; CHECK-NOT: DW_AT_comp_dir
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; CHECK: DW_AT_GNU_dwo_id DW_FORM_data8
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; CHECK: [2] DW_TAG_variable DW_CHILDREN_no
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; CHECK: DW_AT_name DW_FORM_GNU_str_index
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; CHECK: DW_AT_type DW_FORM_ref4
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; CHECK: DW_AT_external DW_FORM_flag_present
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; CHECK: DW_AT_decl_file DW_FORM_data1
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; CHECK: DW_AT_decl_line DW_FORM_data1
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; CHECK: DW_AT_location DW_FORM_exprloc
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; CHECK: [3] DW_TAG_base_type DW_CHILDREN_no
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; CHECK: DW_AT_name DW_FORM_GNU_str_index
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; CHECK: DW_AT_encoding DW_FORM_data1
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; CHECK: DW_AT_byte_size DW_FORM_data1
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; CHECK: .debug_info contents:
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; CHECK: DW_TAG_compile_unit
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; CHECK-NEXT: DW_AT_stmt_list [DW_FORM_sec_offset] (0x00000000)
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; CHECK-NEXT: DW_AT_GNU_dwo_name [DW_FORM_strp] ( .debug_str[0x00000000] = "baz.dwo")
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; CHECK-NEXT: DW_AT_comp_dir [DW_FORM_strp] ( .debug_str[0x00000008] = "/usr/local/google/home/echristo/tmp")
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; CHECK-NEXT: DW_AT_GNU_dwo_id [DW_FORM_data8] (0x1f1f859683d49324)
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; Check that the rest of the compile units have information.
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; CHECK: .debug_info.dwo contents:
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; CHECK: DW_TAG_compile_unit
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; CHECK: DW_AT_producer [DW_FORM_GNU_str_index] ( indexed (00000000) string = "clang version 3.3 (trunk 169021) (llvm/trunk 169020)")
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; CHECK: DW_AT_language [DW_FORM_data2] (DW_LANG_C99)
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; CHECK: DW_AT_name [DW_FORM_GNU_str_index] ( indexed (00000001) string = "baz.c")
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; CHECK-NOT: DW_AT_low_pc
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; CHECK-NOT: DW_AT_stmt_list
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; CHECK-NOT: DW_AT_comp_dir
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; CHECK: DW_AT_GNU_dwo_id [DW_FORM_data8] (0x1f1f859683d49324)
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; CHECK: DW_TAG_variable
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; CHECK: DW_AT_name [DW_FORM_GNU_str_index] ( indexed (00000002) string = "a")
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; CHECK: DW_AT_type [DW_FORM_ref4] (cu + 0x{{[0-9a-f]*}} => {[[TYPE:0x[0-9a-f]*]]})
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; CHECK: DW_AT_external [DW_FORM_flag_present] (true)
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; CHECK: DW_AT_decl_file [DW_FORM_data1] (0x01)
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; CHECK: DW_AT_decl_line [DW_FORM_data1] (1)
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; CHECK: DW_AT_location [DW_FORM_exprloc] (<0x2> fb 00 )
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; CHECK: [[TYPE]]: DW_TAG_base_type
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; CHECK: DW_AT_name [DW_FORM_GNU_str_index] ( indexed (00000003) string = "int")
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; CHECK: .debug_str contents:
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; CHECK: 0x00000000: "baz.dwo"
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; CHECK: 0x00000008: "/usr/local/google/home/echristo/tmp"
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; CHECK: .debug_str.dwo contents:
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; CHECK: 0x00000000: "clang version 3.3 (trunk 169021) (llvm/trunk 169020)"
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; CHECK: 0x00000035: "baz.c"
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; CHECK: 0x0000003b: "a"
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; CHECK: 0x0000003d: "int"
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; CHECK: .debug_str_offsets.dwo contents:
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; CHECK: 0x00000000: 00000000
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; CHECK: 0x00000004: 00000035
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; CHECK: 0x00000008: 0000003b
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; CHECK: 0x0000000c: 0000003d
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; Object file checks
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; For x86-64-linux we should have this set of relocations for the debug info section
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;
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; OBJ: .debug_info
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; OBJ-NEXT: R_X86_64_32 .debug_abbrev
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; OBJ-NEXT: R_X86_64_32 .debug_line
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; OBJ-NEXT: R_X86_64_32 .debug_str
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; OBJ-NEXT: R_X86_64_32 .debug_str
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; OBJ-NEXT: R_X86_64_32 .debug_addr
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; OBJ-NEXT: }
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; HDR-NOT: .debug_aranges
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; HDR-NOT: .rela.{{.*}}.dwo
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!9 = !{i32 1, !"Debug Info Version", i32 3}
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