diff options
Diffstat (limited to 'compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs')
| -rw-r--r-- | compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs | 207 |
1 files changed, 113 insertions, 94 deletions
diff --git a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs index 98d59f5a8ae..7f3e486ca31 100644 --- a/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs +++ b/compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs @@ -2,6 +2,7 @@ use std::borrow::Cow; use std::fmt::{self, Write}; use std::hash::{Hash, Hasher}; use std::path::{Path, PathBuf}; +use std::sync::Arc; use std::{iter, ptr}; use libc::{c_char, c_longlong, c_uint}; @@ -38,8 +39,8 @@ use crate::debuginfo::metadata::type_map::build_type_with_children; use crate::debuginfo::utils::{WidePtrKind, wide_pointer_kind}; use crate::llvm; use crate::llvm::debuginfo::{ - DIDescriptor, DIFile, DIFlags, DILexicalBlock, DIScope, DIType, DebugEmissionKind, - DebugNameTableKind, + DIBasicType, DIBuilder, DICompositeType, DIDescriptor, DIFile, DIFlags, DILexicalBlock, + DIScope, DIType, DebugEmissionKind, DebugNameTableKind, }; use crate::value::Value; @@ -68,7 +69,8 @@ pub(super) const UNKNOWN_COLUMN_NUMBER: c_uint = 0; const NO_SCOPE_METADATA: Option<&DIScope> = None; /// A function that returns an empty list of generic parameter debuginfo nodes. -const NO_GENERICS: for<'ll> fn(&CodegenCx<'ll, '_>) -> SmallVec<&'ll DIType> = |_| SmallVec::new(); +const NO_GENERICS: for<'ll> fn(&CodegenCx<'ll, '_>) -> SmallVec<Option<&'ll DIType>> = + |_| SmallVec::new(); // SmallVec is used quite a bit in this module, so create a shorthand. // The actual number of elements is not so important. @@ -243,7 +245,7 @@ fn build_pointer_or_reference_di_node<'ll, 'tcx>( cx, owner, addr_field_name, - (addr_field.size, addr_field.align.abi), + addr_field, layout.fields.offset(WIDE_PTR_ADDR), DIFlags::FlagZero, data_ptr_type_di_node, @@ -253,7 +255,7 @@ fn build_pointer_or_reference_di_node<'ll, 'tcx>( cx, owner, extra_field_name, - (extra_field.size, extra_field.align.abi), + extra_field, layout.fields.offset(WIDE_PTR_EXTRA), DIFlags::FlagZero, type_di_node(cx, extra_field.ty), @@ -311,12 +313,7 @@ fn build_subroutine_type_di_node<'ll, 'tcx>( debug_context(cx).type_map.unique_id_to_di_node.borrow_mut().remove(&unique_type_id); - let fn_di_node = unsafe { - llvm::LLVMRustDIBuilderCreateSubroutineType( - DIB(cx), - create_DIArray(DIB(cx), &signature_di_nodes[..]), - ) - }; + let fn_di_node = create_subroutine_type(cx, create_DIArray(DIB(cx), &signature_di_nodes[..])); // This is actually a function pointer, so wrap it in pointer DI. let name = compute_debuginfo_type_name(cx.tcx, fn_ty, false); @@ -340,6 +337,13 @@ fn build_subroutine_type_di_node<'ll, 'tcx>( DINodeCreationResult::new(di_node, false) } +pub(super) fn create_subroutine_type<'ll>( + cx: &CodegenCx<'ll, '_>, + signature: &'ll DICompositeType, +) -> &'ll DICompositeType { + unsafe { llvm::LLVMRustDIBuilderCreateSubroutineType(DIB(cx), signature) } +} + /// Create debuginfo for `dyn SomeTrait` types. Currently these are empty structs /// we with the correct type name (e.g. "dyn SomeTrait<Foo, Item=u32> + Sync"). fn build_dyn_type_di_node<'ll, 'tcx>( @@ -487,26 +491,22 @@ pub(crate) fn type_di_node<'ll, 'tcx>(cx: &CodegenCx<'ll, 'tcx>, t: Ty<'tcx>) -> // FIXME(mw): Cache this via a regular UniqueTypeId instead of an extra field in the debug context. fn recursion_marker_type_di_node<'ll, 'tcx>(cx: &CodegenCx<'ll, 'tcx>) -> &'ll DIType { *debug_context(cx).recursion_marker_type.get_or_init(move || { - unsafe { - // The choice of type here is pretty arbitrary - - // anything reading the debuginfo for a recursive - // type is going to see *something* weird - the only - // question is what exactly it will see. - // - // FIXME: the name `<recur_type>` does not fit the naming scheme - // of other types. - // - // FIXME: it might make sense to use an actual pointer type here - // so that debuggers can show the address. - let name = "<recur_type>"; - llvm::LLVMRustDIBuilderCreateBasicType( - DIB(cx), - name.as_c_char_ptr(), - name.len(), - cx.tcx.data_layout.pointer_size.bits(), - dwarf_const::DW_ATE_unsigned, - ) - } + // The choice of type here is pretty arbitrary - + // anything reading the debuginfo for a recursive + // type is going to see *something* weird - the only + // question is what exactly it will see. + // + // FIXME: the name `<recur_type>` does not fit the naming scheme + // of other types. + // + // FIXME: it might make sense to use an actual pointer type here + // so that debuggers can show the address. + create_basic_type( + cx, + "<recur_type>", + cx.tcx.data_layout.pointer_size, + dwarf_const::DW_ATE_unsigned, + ) }) } @@ -620,42 +620,38 @@ pub(crate) fn file_metadata<'ll>(cx: &CodegenCx<'ll, '_>, source_file: &SourceFi let source = cx.sess().opts.unstable_opts.embed_source.then_some(()).and(source_file.src.as_ref()); - unsafe { - llvm::LLVMRustDIBuilderCreateFile( - DIB(cx), - file_name.as_c_char_ptr(), - file_name.len(), - directory.as_c_char_ptr(), - directory.len(), - hash_kind, - hash_value.as_c_char_ptr(), - hash_value.len(), - source.map_or(ptr::null(), |x| x.as_c_char_ptr()), - source.map_or(0, |x| x.len()), - ) - } + create_file(DIB(cx), &file_name, &directory, &hash_value, hash_kind, source) } } fn unknown_file_metadata<'ll>(cx: &CodegenCx<'ll, '_>) -> &'ll DIFile { - debug_context(cx).created_files.borrow_mut().entry(None).or_insert_with(|| unsafe { - let file_name = "<unknown>"; - let directory = ""; - let hash_value = ""; + debug_context(cx).created_files.borrow_mut().entry(None).or_insert_with(|| { + create_file(DIB(cx), "<unknown>", "", "", llvm::ChecksumKind::None, None) + }) +} +fn create_file<'ll>( + builder: &DIBuilder<'ll>, + file_name: &str, + directory: &str, + hash_value: &str, + hash_kind: llvm::ChecksumKind, + source: Option<&Arc<String>>, +) -> &'ll DIFile { + unsafe { llvm::LLVMRustDIBuilderCreateFile( - DIB(cx), + builder, file_name.as_c_char_ptr(), file_name.len(), directory.as_c_char_ptr(), directory.len(), - llvm::ChecksumKind::None, + hash_kind, hash_value.as_c_char_ptr(), hash_value.len(), - ptr::null(), - 0, + source.map_or(ptr::null(), |x| x.as_c_char_ptr()), + source.map_or(0, |x| x.len()), ) - }) + } } trait MsvcBasicName { @@ -742,7 +738,7 @@ fn build_cpp_f16_di_node<'ll, 'tcx>(cx: &CodegenCx<'ll, 'tcx>) -> DINodeCreation cx, float_di_node, "bits", - cx.size_and_align_of(bits_ty), + cx.layout_of(bits_ty), Size::ZERO, DIFlags::FlagZero, type_di_node(cx, bits_ty), @@ -788,15 +784,7 @@ fn build_basic_type_di_node<'ll, 'tcx>( _ => bug!("debuginfo::build_basic_type_di_node - `t` is invalid type"), }; - let ty_di_node = unsafe { - llvm::LLVMRustDIBuilderCreateBasicType( - DIB(cx), - name.as_c_char_ptr(), - name.len(), - cx.size_of(t).bits(), - encoding, - ) - }; + let ty_di_node = create_basic_type(cx, name, cx.size_of(t), encoding); if !cpp_like_debuginfo { return DINodeCreationResult::new(ty_di_node, false); @@ -824,6 +812,23 @@ fn build_basic_type_di_node<'ll, 'tcx>( DINodeCreationResult::new(typedef_di_node, false) } +fn create_basic_type<'ll, 'tcx>( + cx: &CodegenCx<'ll, 'tcx>, + name: &str, + size: Size, + encoding: u32, +) -> &'ll DIBasicType { + unsafe { + llvm::LLVMRustDIBuilderCreateBasicType( + DIB(cx), + name.as_c_char_ptr(), + name.len(), + size.bits(), + encoding, + ) + } +} + fn build_foreign_type_di_node<'ll, 'tcx>( cx: &CodegenCx<'ll, 'tcx>, t: Ty<'tcx>, @@ -905,7 +910,8 @@ pub(crate) fn build_compile_unit_di_node<'ll, 'tcx>( && let Some(f) = output_filenames.split_dwarf_path( tcx.sess.split_debuginfo(), tcx.sess.opts.unstable_opts.split_dwarf_kind, - Some(codegen_unit_name), + codegen_unit_name, + tcx.sess.invocation_temp.as_deref(), ) { // We get a path relative to the working directory from split_dwarf_path Some(tcx.sess.source_map().path_mapping().to_real_filename(f)) @@ -929,17 +935,13 @@ pub(crate) fn build_compile_unit_di_node<'ll, 'tcx>( }; unsafe { - let compile_unit_file = llvm::LLVMRustDIBuilderCreateFile( + let compile_unit_file = create_file( debug_context.builder.as_ref(), - name_in_debuginfo.as_c_char_ptr(), - name_in_debuginfo.len(), - work_dir.as_c_char_ptr(), - work_dir.len(), + &name_in_debuginfo, + &work_dir, + "", llvm::ChecksumKind::None, - ptr::null(), - 0, - ptr::null(), - 0, + None, ); let unit_metadata = llvm::LLVMRustDIBuilderCreateCompileUnit( @@ -971,7 +973,7 @@ fn build_field_di_node<'ll, 'tcx>( cx: &CodegenCx<'ll, 'tcx>, owner: &'ll DIScope, name: &str, - size_and_align: (Size, Align), + layout: TyAndLayout<'tcx>, offset: Size, flags: DIFlags, type_di_node: &'ll DIType, @@ -983,6 +985,30 @@ fn build_field_di_node<'ll, 'tcx>( } else { (unknown_file_metadata(cx), UNKNOWN_LINE_NUMBER) }; + create_member_type( + cx, + owner, + name, + file_metadata, + line_number, + layout, + offset, + flags, + type_di_node, + ) +} + +fn create_member_type<'ll, 'tcx>( + cx: &CodegenCx<'ll, 'tcx>, + owner: &'ll DIScope, + name: &str, + file_metadata: &'ll DIType, + line_number: u32, + layout: TyAndLayout<'tcx>, + offset: Size, + flags: DIFlags, + type_di_node: &'ll DIType, +) -> &'ll DIType { unsafe { llvm::LLVMRustDIBuilderCreateMemberType( DIB(cx), @@ -991,8 +1017,8 @@ fn build_field_di_node<'ll, 'tcx>( name.len(), file_metadata, line_number, - size_and_align.0.bits(), - size_and_align.1.bits() as u32, + layout.size.bits(), + layout.align.abi.bits() as u32, offset.bits(), flags, type_di_node, @@ -1076,7 +1102,7 @@ fn build_struct_type_di_node<'ll, 'tcx>( cx, owner, &field_name[..], - (field_layout.size, field_layout.align.abi), + field_layout, struct_type_and_layout.fields.offset(i), visibility_di_flags(cx, f.did, adt_def.did()), type_di_node(cx, field_layout.ty), @@ -1126,7 +1152,7 @@ fn build_upvar_field_di_nodes<'ll, 'tcx>( cx, closure_or_coroutine_di_node, capture_name.as_str(), - cx.size_and_align_of(up_var_ty), + cx.layout_of(up_var_ty), layout.fields.offset(index), DIFlags::FlagZero, type_di_node(cx, up_var_ty), @@ -1171,7 +1197,7 @@ fn build_tuple_type_di_node<'ll, 'tcx>( cx, tuple_di_node, &tuple_field_name(index), - cx.size_and_align_of(component_type), + cx.layout_of(component_type), tuple_type_and_layout.fields.offset(index), DIFlags::FlagZero, type_di_node(cx, component_type), @@ -1269,7 +1295,7 @@ fn build_union_type_di_node<'ll, 'tcx>( cx, owner, f.name.as_str(), - size_and_align_of(field_layout), + field_layout, Size::ZERO, DIFlags::FlagZero, type_di_node(cx, field_layout.ty), @@ -1287,7 +1313,7 @@ fn build_union_type_di_node<'ll, 'tcx>( fn build_generic_type_param_di_nodes<'ll, 'tcx>( cx: &CodegenCx<'ll, 'tcx>, ty: Ty<'tcx>, -) -> SmallVec<&'ll DIType> { +) -> SmallVec<Option<&'ll DIType>> { if let ty::Adt(def, args) = *ty.kind() { if args.types().next().is_some() { let generics = cx.tcx.generics_of(def.did()); @@ -1297,16 +1323,7 @@ fn build_generic_type_param_di_nodes<'ll, 'tcx>( kind.as_type().map(|ty| { let actual_type = cx.tcx.normalize_erasing_regions(cx.typing_env(), ty); let actual_type_di_node = type_di_node(cx, actual_type); - let name = name.as_str(); - unsafe { - llvm::LLVMRustDIBuilderCreateTemplateTypeParameter( - DIB(cx), - None, - name.as_c_char_ptr(), - name.len(), - actual_type_di_node, - ) - } + Some(cx.create_template_type_parameter(name.as_str(), actual_type_di_node)) }) }) .collect(); @@ -1416,7 +1433,9 @@ fn build_vtable_type_di_node<'ll, 'tcx>( let void_pointer_ty = Ty::new_imm_ptr(tcx, tcx.types.unit); let void_pointer_type_di_node = type_di_node(cx, void_pointer_ty); let usize_di_node = type_di_node(cx, tcx.types.usize); - let (pointer_size, pointer_align) = cx.size_and_align_of(void_pointer_ty); + let pointer_layout = cx.layout_of(void_pointer_ty); + let pointer_size = pointer_layout.size; + let pointer_align = pointer_layout.align.abi; // If `usize` is not pointer-sized and -aligned then the size and alignment computations // for the vtable as a whole would be wrong. Let's make sure this holds even on weird // platforms. @@ -1472,7 +1491,7 @@ fn build_vtable_type_di_node<'ll, 'tcx>( cx, vtable_type_di_node, &field_name, - (pointer_size, pointer_align), + pointer_layout, field_offset, DIFlags::FlagZero, field_type_di_node, |