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Dwarf: add more childless special cases

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This commit is contained in:
Jacob Young 2024-08-22 16:33:36 -04:00
parent 874ad98f7a
commit f47e1e148e
1 changed files with 25 additions and 8 deletions
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33
src/link/Dwarf.zig
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@ -2834,7 +2834,7 @@ fn updateType(
},
.enum_type => {
const loaded_enum = ip.loadEnumType(type_index);
try wip_nav.abbrevCode(.enum_type);
try wip_nav.abbrevCode(if (loaded_enum.names.len > 0) .enum_type else .empty_enum_type);
try wip_nav.strp(name);
try wip_nav.refType(Type.fromInterned(loaded_enum.tag_ty));
for (0..loaded_enum.names.len) |field_index| {
@ -2844,7 +2844,7 @@ fn updateType(
}, field_index);
try wip_nav.strp(loaded_enum.names.get(ip)[field_index].toSlice(ip));
}
try uleb128(diw, @intFromEnum(AbbrevCode.null));
if (loaded_enum.names.len > 0) try uleb128(diw, @intFromEnum(AbbrevCode.null));
},
.func_type => |func_type| {
const is_nullary = func_type.param_types.len == 0 and !func_type.is_var_args;
@ -3052,7 +3052,7 @@ pub fn updateContainerType(dwarf: *Dwarf, pt: Zcu.PerThread, type_index: InternP
}
},
.@"packed" => {
try wip_nav.abbrevCode(.packed_struct_type);
try wip_nav.abbrevCode(if (loaded_struct.field_types.len > 0) .packed_struct_type else .empty_packed_struct_type);
try wip_nav.strp(name);
try wip_nav.refType(Type.fromInterned(loaded_struct.backingIntTypeUnordered(ip)));
var field_bit_offset: u16 = 0;
@ -3064,13 +3064,13 @@ pub fn updateContainerType(dwarf: *Dwarf, pt: Zcu.PerThread, type_index: InternP
try uleb128(diw, field_bit_offset);
field_bit_offset += @intCast(field_type.bitSize(pt));
}
try uleb128(diw, @intFromEnum(AbbrevCode.null));
if (loaded_struct.field_types.len > 0) try uleb128(diw, @intFromEnum(AbbrevCode.null));
},
}
},
.enum_type => {
const loaded_enum = ip.loadEnumType(type_index);
try wip_nav.abbrevCode(.enum_type);
try wip_nav.abbrevCode(if (loaded_enum.names.len > 0) .enum_type else .empty_enum_type);
try wip_nav.strp(name);
try wip_nav.refType(Type.fromInterned(loaded_enum.tag_ty));
for (0..loaded_enum.names.len) |field_index| {
@ -3080,11 +3080,11 @@ pub fn updateContainerType(dwarf: *Dwarf, pt: Zcu.PerThread, type_index: InternP
}, field_index);
try wip_nav.strp(loaded_enum.names.get(ip)[field_index].toSlice(ip));
}
try uleb128(diw, @intFromEnum(AbbrevCode.null));
if (loaded_enum.names.len > 0) try uleb128(diw, @intFromEnum(AbbrevCode.null));
},
.union_type => {
const loaded_union = ip.loadUnionType(type_index);
try wip_nav.abbrevCode(.union_type);
try wip_nav.abbrevCode(if (loaded_union.field_types.len > 0) .union_type else .empty_union_type);
try wip_nav.strp(name);
const union_layout = pt.getUnionLayout(loaded_union);
try uleb128(diw, union_layout.abi_size);
@ -3133,7 +3133,7 @@ pub fn updateContainerType(dwarf: *Dwarf, pt: Zcu.PerThread, type_index: InternP
try uleb128(diw, loaded_union.fieldAlign(ip, field_index).toByteUnits() orelse
field_type.abiAlignment(pt).toByteUnits().?);
}
try uleb128(diw, @intFromEnum(AbbrevCode.null));
if (loaded_union.field_types.len > 0) try uleb128(diw, @intFromEnum(AbbrevCode.null));
},
.opaque_type => {
try wip_nav.abbrevCode(.namespace_struct_type);
@ -3599,7 +3599,9 @@ const AbbrevCode = enum {
namespace_struct_type,
struct_type,
packed_struct_type,
empty_packed_struct_type,
union_type,
empty_union_type,
empty_inlined_func,
inlined_func,
local_arg,
@ -3974,6 +3976,13 @@ const AbbrevCode = enum {
.{ .type, .ref_addr },
},
},
.empty_packed_struct_type = .{
.tag = .structure_type,
.attrs = &.{
.{ .name, .strp },
.{ .type, .ref_addr },
},
},
.union_type = .{
.tag = .union_type,
.children = true,
@ -3983,6 +3992,14 @@ const AbbrevCode = enum {
.{ .alignment, .udata },
},
},
.empty_union_type = .{
.tag = .union_type,
.attrs = &.{
.{ .name, .strp },
.{ .byte_size, .udata },
.{ .alignment, .udata },
},
},
.empty_inlined_func = .{
.tag = .inlined_subroutine,
.attrs = &.{