compiler: Stop reexporting stuff in cg_llvm::abi

The reexports confuse tooling like rustdoc into thinking cg_llvm is
the source of key types that originate in rustc_target.

Author: workingjubilee

compiler/rustc_codegen_llvm/src/abi.rs

@@ -2,19 +2,18 @@ use std::borrow::Borrow;
 use std::cmp;
 
 use libc::c_uint;
-use rustc_abi as abi;
-pub(crate) use rustc_abi::ExternAbi;
-use rustc_abi::{HasDataLayout, Primitive, Reg, RegKind, Size};
+use rustc_abi::{BackendRepr, HasDataLayout, Primitive, Reg, RegKind, Size};
 use rustc_codegen_ssa::MemFlags;
 use rustc_codegen_ssa::mir::operand::{OperandRef, OperandValue};
 use rustc_codegen_ssa::mir::place::{PlaceRef, PlaceValue};
 use rustc_codegen_ssa::traits::*;
 use rustc_middle::ty::Ty;
 use rustc_middle::ty::layout::LayoutOf;
-pub(crate) use rustc_middle::ty::layout::{WIDE_PTR_ADDR, WIDE_PTR_EXTRA};
 use rustc_middle::{bug, ty};
 use rustc_session::config;
-pub(crate) use rustc_target::callconv::*;
+use rustc_target::callconv::{
+    ArgAbi, ArgAttribute, ArgAttributes, ArgExtension, CastTarget, Conv, FnAbi, PassMode,
+};
 use rustc_target::spec::SanitizerSet;
 use smallvec::SmallVec;
 
@@ -458,7 +457,7 @@ impl<'ll, 'tcx> FnAbiLlvmExt<'ll, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
         match &self.ret.mode {
             PassMode::Direct(attrs) => {
                 attrs.apply_attrs_to_llfn(llvm::AttributePlace::ReturnValue, cx, llfn);
-                if let abi::BackendRepr::Scalar(scalar) = self.ret.layout.backend_repr {
+                if let BackendRepr::Scalar(scalar) = self.ret.layout.backend_repr {
                     apply_range_attr(llvm::AttributePlace::ReturnValue, scalar);
                 }
             }
@@ -499,7 +498,7 @@ impl<'ll, 'tcx> FnAbiLlvmExt<'ll, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
                 }
                 PassMode::Direct(attrs) => {
                     let i = apply(attrs);
-                    if let abi::BackendRepr::Scalar(scalar) = arg.layout.backend_repr {
+                    if let BackendRepr::Scalar(scalar) = arg.layout.backend_repr {
                         apply_range_attr(llvm::AttributePlace::Argument(i), scalar);
                     }
                 }
@@ -514,9 +513,7 @@ impl<'ll, 'tcx> FnAbiLlvmExt<'ll, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
                 PassMode::Pair(a, b) => {
                     let i = apply(a);
                     let ii = apply(b);
-                    if let abi::BackendRepr::ScalarPair(scalar_a, scalar_b) =
-                        arg.layout.backend_repr
-                    {
+                    if let BackendRepr::ScalarPair(scalar_a, scalar_b) = arg.layout.backend_repr {
                         apply_range_attr(llvm::AttributePlace::Argument(i), scalar_a);
                         apply_range_attr(llvm::AttributePlace::Argument(ii), scalar_b);
                     }
@@ -576,7 +573,7 @@ impl<'ll, 'tcx> FnAbiLlvmExt<'ll, 'tcx> for FnAbi<'tcx, Ty<'tcx>> {
         }
         if bx.cx.sess().opts.optimize != config::OptLevel::No
                 && llvm_util::get_version() < (19, 0, 0)
-                && let abi::BackendRepr::Scalar(scalar) = self.ret.layout.backend_repr
+                && let BackendRepr::Scalar(scalar) = self.ret.layout.backend_repr
                 && matches!(scalar.primitive(), Primitive::Int(..))
                 // If the value is a boolean, the range is 0..2 and that ultimately
                 // become 0..0 when the type becomes i1, which would be rejected

compiler/rustc_codegen_llvm/src/debuginfo/metadata.rs

@@ -11,7 +11,9 @@ use rustc_codegen_ssa::traits::*;
 use rustc_hir::def::{CtorKind, DefKind};
 use rustc_hir::def_id::{DefId, LOCAL_CRATE};
 use rustc_middle::bug;
-use rustc_middle::ty::layout::{HasTypingEnv, LayoutOf, TyAndLayout};
+use rustc_middle::ty::layout::{
+    HasTypingEnv, LayoutOf, TyAndLayout, WIDE_PTR_ADDR, WIDE_PTR_EXTRA,
+};
 use rustc_middle::ty::{
     self, AdtKind, CoroutineArgsExt, ExistentialTraitRef, Instance, Ty, TyCtxt, Visibility,
 };
@@ -34,12 +36,12 @@ use crate::common::{AsCCharPtr, CodegenCx};
 use crate::debuginfo::dwarf_const;
 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,
 };
 use crate::value::Value;
-use crate::{abi, llvm};
 
 impl PartialEq for llvm::Metadata {
     fn eq(&self, other: &Self) -> bool {
@@ -211,16 +213,16 @@ fn build_pointer_or_reference_di_node<'ll, 'tcx>(
                     };
 
                     let layout = cx.layout_of(layout_type);
-                    let addr_field = layout.field(cx, abi::WIDE_PTR_ADDR);
-                    let extra_field = layout.field(cx, abi::WIDE_PTR_EXTRA);
+                    let addr_field = layout.field(cx, WIDE_PTR_ADDR);
+                    let extra_field = layout.field(cx, WIDE_PTR_EXTRA);
 
                     let (addr_field_name, extra_field_name) = match wide_pointer_kind {
                         WidePtrKind::Dyn => ("pointer", "vtable"),
                         WidePtrKind::Slice => ("data_ptr", "length"),
                     };
 
-                    assert_eq!(abi::WIDE_PTR_ADDR, 0);
-                    assert_eq!(abi::WIDE_PTR_EXTRA, 1);
+                    assert_eq!(WIDE_PTR_ADDR, 0);
+                    assert_eq!(WIDE_PTR_EXTRA, 1);
 
                     // The data pointer type is a regular, thin pointer, regardless of whether this
                     // is a slice or a trait object.
@@ -242,7 +244,7 @@ fn build_pointer_or_reference_di_node<'ll, 'tcx>(
                             owner,
                             addr_field_name,
                             (addr_field.size, addr_field.align.abi),
-                            layout.fields.offset(abi::WIDE_PTR_ADDR),
+                            layout.fields.offset(WIDE_PTR_ADDR),
                             DIFlags::FlagZero,
                             data_ptr_type_di_node,
                             None,
@@ -252,7 +254,7 @@ fn build_pointer_or_reference_di_node<'ll, 'tcx>(
                             owner,
                             extra_field_name,
                             (extra_field.size, extra_field.align.abi),
-                            layout.fields.offset(abi::WIDE_PTR_EXTRA),
+                            layout.fields.offset(WIDE_PTR_EXTRA),
                             DIFlags::FlagZero,
                             type_di_node(cx, extra_field.ty),
                             None,

compiler/rustc_codegen_llvm/src/debuginfo/mod.rs

@@ -22,14 +22,14 @@ use rustc_session::config::{self, DebugInfo};
 use rustc_span::{
     BytePos, Pos, SourceFile, SourceFileAndLine, SourceFileHash, Span, StableSourceFileId, Symbol,
 };
+use rustc_target::callconv::FnAbi;
 use rustc_target::spec::DebuginfoKind;
 use smallvec::SmallVec;
 use tracing::debug;
 
 use self::metadata::{UNKNOWN_COLUMN_NUMBER, UNKNOWN_LINE_NUMBER, file_metadata, type_di_node};
 use self::namespace::mangled_name_of_instance;
 use self::utils::{DIB, create_DIArray, is_node_local_to_unit};
-use crate::abi::FnAbi;
 use crate::builder::Builder;
 use crate::common::{AsCCharPtr, CodegenCx};
 use crate::llvm;

compiler/rustc_codegen_llvm/src/declare.rs

@@ -16,10 +16,11 @@ use rustc_codegen_ssa::traits::TypeMembershipCodegenMethods;
 use rustc_data_structures::fx::FxIndexSet;
 use rustc_middle::ty::{Instance, Ty};
 use rustc_sanitizers::{cfi, kcfi};
+use rustc_target::callconv::FnAbi;
 use smallvec::SmallVec;
 use tracing::debug;
 
-use crate::abi::{FnAbi, FnAbiLlvmExt};
+use crate::abi::FnAbiLlvmExt;
 use crate::common::AsCCharPtr;
 use crate::context::{CodegenCx, SimpleCx};
 use crate::llvm::AttributePlace::Function;

compiler/rustc_codegen_llvm/src/intrinsic.rs

@@ -1,7 +1,7 @@
 use std::assert_matches::assert_matches;
 use std::cmp::Ordering;
 
-use rustc_abi::{self as abi, Align, Float, HasDataLayout, Primitive, Size};
+use rustc_abi::{Align, BackendRepr, ExternAbi, Float, HasDataLayout, Primitive, Size};
 use rustc_codegen_ssa::base::{compare_simd_types, wants_msvc_seh, wants_wasm_eh};
 use rustc_codegen_ssa::common::{IntPredicate, TypeKind};
 use rustc_codegen_ssa::errors::{ExpectedPointerMutability, InvalidMonomorphization};
@@ -14,10 +14,11 @@ use rustc_middle::ty::layout::{FnAbiOf, HasTyCtxt, HasTypingEnv, LayoutOf};
 use rustc_middle::ty::{self, GenericArgsRef, Ty};
 use rustc_middle::{bug, span_bug};
 use rustc_span::{Span, Symbol, sym};
+use rustc_target::callconv::{FnAbi, PassMode};
 use rustc_target::spec::{HasTargetSpec, PanicStrategy};
 use tracing::debug;
 
-use crate::abi::{ExternAbi, FnAbi, FnAbiLlvmExt, LlvmType, PassMode};
+use crate::abi::{FnAbiLlvmExt, LlvmType};
 use crate::builder::Builder;
 use crate::context::CodegenCx;
 use crate::llvm::{self, Metadata};
@@ -257,7 +258,7 @@ impl<'ll, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
             }
             sym::va_arg => {
                 match fn_abi.ret.layout.backend_repr {
-                    abi::BackendRepr::Scalar(scalar) => {
+                    BackendRepr::Scalar(scalar) => {
                         match scalar.primitive() {
                             Primitive::Int(..) => {
                                 if self.cx().size_of(ret_ty).bytes() < 4 {
@@ -470,7 +471,7 @@ impl<'ll, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
             }
 
             sym::raw_eq => {
-                use abi::BackendRepr::*;
+                use BackendRepr::*;
                 let tp_ty = fn_args.type_at(0);
                 let layout = self.layout_of(tp_ty).layout;
                 let use_integer_compare = match layout.backend_repr() {
@@ -582,8 +583,7 @@ impl<'ll, 'tcx> IntrinsicCallBuilderMethods<'tcx> for Builder<'_, 'll, 'tcx> {
                 }
 
                 let llret_ty = if ret_ty.is_simd()
-                    && let abi::BackendRepr::Memory { .. } =
-                        self.layout_of(ret_ty).layout.backend_repr
+                    && let BackendRepr::Memory { .. } = self.layout_of(ret_ty).layout.backend_repr
                 {
                     let (size, elem_ty) = ret_ty.simd_size_and_type(self.tcx());
                     let elem_ll_ty = match elem_ty.kind() {