compiler: Directly use rustc_abi in ty_utils

compiler/rustc_ty_utils/src/abi.rs

@@ -1,7 +1,7 @@
 use std::iter;
 
 use rustc_abi::Primitive::Pointer;
-use rustc_abi::{BackendRepr, PointerKind, Scalar, Size};
+use rustc_abi::{BackendRepr, ExternAbi, PointerKind, Scalar, Size};
 use rustc_hir as hir;
 use rustc_hir::lang_items::LangItem;
 use rustc_middle::bug;
@@ -12,10 +12,9 @@ use rustc_middle::ty::layout::{
 use rustc_middle::ty::{self, InstanceKind, Ty, TyCtxt};
 use rustc_session::config::OptLevel;
 use rustc_span::def_id::DefId;
-use rustc_target::abi::call::{
+use rustc_target::callconv::{
     ArgAbi, ArgAttribute, ArgAttributes, ArgExtension, Conv, FnAbi, PassMode, RiscvInterruptKind,
 };
-use rustc_target::spec::abi::Abi as SpecAbi;
 use tracing::debug;
 
 pub(crate) fn provide(providers: &mut Providers) {
@@ -39,7 +38,7 @@ fn fn_sig_for_fn_abi<'tcx>(
             tcx.thread_local_ptr_ty(instance.def_id()),
             false,
             hir::Safety::Safe,
-            rustc_target::spec::abi::Abi::Unadjusted,
+            rustc_abi::ExternAbi::Unadjusted,
         ));
     }
 
@@ -270,7 +269,7 @@ fn fn_sig_for_fn_abi<'tcx>(
                     ret_ty,
                     false,
                     hir::Safety::Safe,
-                    rustc_target::spec::abi::Abi::Rust,
+                    rustc_abi::ExternAbi::Rust,
                 )
             } else {
                 // `Iterator::next` doesn't have a `resume` argument.
@@ -279,7 +278,7 @@ fn fn_sig_for_fn_abi<'tcx>(
                     ret_ty,
                     false,
                     hir::Safety::Safe,
-                    rustc_target::spec::abi::Abi::Rust,
+                    rustc_abi::ExternAbi::Rust,
                 )
             };
             ty::Binder::bind_with_vars(fn_sig, bound_vars)
@@ -289,8 +288,8 @@ fn fn_sig_for_fn_abi<'tcx>(
 }
 
 #[inline]
-fn conv_from_spec_abi(tcx: TyCtxt<'_>, abi: SpecAbi, c_variadic: bool) -> Conv {
-    use rustc_target::spec::abi::Abi::*;
+fn conv_from_spec_abi(tcx: TyCtxt<'_>, abi: ExternAbi, c_variadic: bool) -> Conv {
+    use rustc_abi::ExternAbi::*;
     match tcx.sess.target.adjust_abi(abi, c_variadic) {
         RustIntrinsic | Rust | RustCall => Conv::Rust,
 
@@ -453,12 +452,12 @@ fn adjust_for_rust_scalar<'tcx>(
 fn fn_abi_sanity_check<'tcx>(
     cx: &LayoutCx<'tcx>,
     fn_abi: &FnAbi<'tcx, Ty<'tcx>>,
-    spec_abi: SpecAbi,
+    spec_abi: ExternAbi,
 ) {
     fn fn_arg_sanity_check<'tcx>(
         cx: &LayoutCx<'tcx>,
         fn_abi: &FnAbi<'tcx, Ty<'tcx>>,
-        spec_abi: SpecAbi,
+        spec_abi: ExternAbi,
         arg: &ArgAbi<'tcx, Ty<'tcx>>,
     ) {
         let tcx = cx.tcx();
@@ -489,7 +488,7 @@ fn fn_abi_sanity_check<'tcx>(
                     // (See issue: https://github.com/rust-lang/rust/issues/117271)
                     assert!(
                         matches!(&*tcx.sess.target.arch, "wasm32" | "wasm64")
-                            || matches!(spec_abi, SpecAbi::PtxKernel | SpecAbi::Unadjusted),
+                            || matches!(spec_abi, ExternAbi::PtxKernel | ExternAbi::Unadjusted),
                         "`PassMode::Direct` for aggregates only allowed for \"unadjusted\" and \"ptx-kernel\" functions and on wasm\n\
                           Problematic type: {:#?}",
                         arg.layout,
@@ -556,7 +555,7 @@ fn fn_abi_new_uncached<'tcx>(
     let conv = conv_from_spec_abi(cx.tcx(), sig.abi, sig.c_variadic);
 
     let mut inputs = sig.inputs();
-    let extra_args = if sig.abi == SpecAbi::RustCall {
+    let extra_args = if sig.abi == ExternAbi::RustCall {
         assert!(!sig.c_variadic && extra_args.is_empty());
 
         if let Some(input) = sig.inputs().last() {
@@ -649,10 +648,10 @@ fn fn_abi_new_uncached<'tcx>(
 fn fn_abi_adjust_for_abi<'tcx>(
     cx: &LayoutCx<'tcx>,
     fn_abi: &mut FnAbi<'tcx, Ty<'tcx>>,
-    abi: SpecAbi,
+    abi: ExternAbi,
     fn_def_id: Option<DefId>,
 ) -> Result<(), &'tcx FnAbiError<'tcx>> {
-    if abi == SpecAbi::Unadjusted {
+    if abi == ExternAbi::Unadjusted {
         // The "unadjusted" ABI passes aggregates in "direct" mode. That's fragile but needed for
         // some LLVM intrinsics.
         fn unadjust<'tcx>(arg: &mut ArgAbi<'tcx, Ty<'tcx>>) {
@@ -676,7 +675,7 @@ fn fn_abi_adjust_for_abi<'tcx>(
 
     let tcx = cx.tcx();
 
-    if abi == SpecAbi::Rust || abi == SpecAbi::RustCall || abi == SpecAbi::RustIntrinsic {
+    if abi == ExternAbi::Rust || abi == ExternAbi::RustCall || abi == ExternAbi::RustIntrinsic {
         fn_abi.adjust_for_rust_abi(cx, abi);
 
         // Look up the deduced parameter attributes for this function, if we have its def ID and