diff --git a/Cargo.lock b/Cargo.lock
index e2bd466a9d658..0f65cc696abbf 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3751,11 +3751,11 @@ dependencies = [
 name = "rustc_hir_pretty"
 version = "0.0.0"
 dependencies = [
+ "rustc_abi",
  "rustc_ast",
  "rustc_ast_pretty",
  "rustc_hir",
  "rustc_span",
- "rustc_target",
 ]
 
 [[package]]
@@ -3940,6 +3940,7 @@ dependencies = [
 name = "rustc_lint_defs"
 version = "0.0.0"
 dependencies = [
+ "rustc_abi",
  "rustc_ast",
  "rustc_data_structures",
  "rustc_error_messages",
@@ -3947,7 +3948,6 @@ dependencies = [
  "rustc_macros",
  "rustc_serialize",
  "rustc_span",
- "rustc_target",
  "serde",
 ]
 
@@ -4056,6 +4056,7 @@ version = "0.0.0"
 dependencies = [
  "either",
  "itertools",
+ "rustc_abi",
  "rustc_apfloat",
  "rustc_arena",
  "rustc_ast",
@@ -4071,7 +4072,6 @@ dependencies = [
  "rustc_pattern_analysis",
  "rustc_session",
  "rustc_span",
- "rustc_target",
  "rustc_trait_selection",
  "tracing",
 ]
diff --git a/compiler/rustc_hir_pretty/Cargo.toml b/compiler/rustc_hir_pretty/Cargo.toml
index aacf41b6eb737..9af1fb8279e9f 100644
--- a/compiler/rustc_hir_pretty/Cargo.toml
+++ b/compiler/rustc_hir_pretty/Cargo.toml
@@ -5,9 +5,9 @@ edition = "2021"
 
 [dependencies]
 # tidy-alphabetical-start
+rustc_abi = { path = "../rustc_abi" }
 rustc_ast = { path = "../rustc_ast" }
 rustc_ast_pretty = { path = "../rustc_ast_pretty" }
 rustc_hir = { path = "../rustc_hir" }
 rustc_span = { path = "../rustc_span" }
-rustc_target = { path = "../rustc_target" }
 # tidy-alphabetical-end
diff --git a/compiler/rustc_hir_pretty/src/lib.rs b/compiler/rustc_hir_pretty/src/lib.rs
index 2073f2868b4fc..0a3aa8fec9005 100644
--- a/compiler/rustc_hir_pretty/src/lib.rs
+++ b/compiler/rustc_hir_pretty/src/lib.rs
@@ -9,6 +9,7 @@
 use std::cell::Cell;
 use std::vec;
 
+use rustc_abi::ExternAbi;
 use rustc_ast::util::parser::{self, AssocOp, Fixity};
 use rustc_ast_pretty::pp::Breaks::{Consistent, Inconsistent};
 use rustc_ast_pretty::pp::{self, Breaks};
@@ -20,7 +21,6 @@ use rustc_hir::{
 use rustc_span::FileName;
 use rustc_span::source_map::SourceMap;
 use rustc_span::symbol::{Ident, Symbol, kw};
-use rustc_target::spec::abi::Abi;
 use {rustc_ast as ast, rustc_hir as hir};
 
 pub fn id_to_string(map: &dyn rustc_hir::intravisit::Map<'_>, hir_id: HirId) -> String {
@@ -2240,7 +2240,7 @@ impl<'a> State<'a> {
 
     fn print_ty_fn(
         &mut self,
-        abi: Abi,
+        abi: ExternAbi,
         safety: hir::Safety,
         decl: &hir::FnDecl<'_>,
         name: Option<Symbol>,
@@ -2276,7 +2276,7 @@ impl<'a> State<'a> {
 
         self.print_safety(header.safety);
 
-        if header.abi != Abi::Rust {
+        if header.abi != ExternAbi::Rust {
             self.word_nbsp("extern");
             self.word_nbsp(header.abi.to_string());
         }
diff --git a/compiler/rustc_lint_defs/Cargo.toml b/compiler/rustc_lint_defs/Cargo.toml
index eb2a184ef84b1..450885e71647f 100644
--- a/compiler/rustc_lint_defs/Cargo.toml
+++ b/compiler/rustc_lint_defs/Cargo.toml
@@ -5,6 +5,7 @@ edition = "2021"
 
 [dependencies]
 # tidy-alphabetical-start
+rustc_abi = { path = "../rustc_abi" }
 rustc_ast = { path = "../rustc_ast" }
 rustc_data_structures = { path = "../rustc_data_structures" }
 rustc_error_messages = { path = "../rustc_error_messages" }
@@ -12,6 +13,5 @@ rustc_hir = { path = "../rustc_hir" }
 rustc_macros = { path = "../rustc_macros" }
 rustc_serialize = { path = "../rustc_serialize" }
 rustc_span = { path = "../rustc_span" }
-rustc_target = { path = "../rustc_target" }
 serde = { version = "1.0.125", features = ["derive"] }
 # tidy-alphabetical-end
diff --git a/compiler/rustc_lint_defs/src/lib.rs b/compiler/rustc_lint_defs/src/lib.rs
index 601784f973231..0caf6ef3a6d7a 100644
--- a/compiler/rustc_lint_defs/src/lib.rs
+++ b/compiler/rustc_lint_defs/src/lib.rs
@@ -2,6 +2,7 @@
 #![warn(unreachable_pub)]
 // tidy-alphabetical-end
 
+use rustc_abi::ExternAbi;
 use rustc_ast::node_id::NodeId;
 use rustc_ast::{AttrId, Attribute};
 use rustc_data_structures::fx::{FxIndexMap, FxIndexSet};
@@ -15,7 +16,6 @@ use rustc_macros::{Decodable, Encodable, HashStable_Generic};
 pub use rustc_span::edition::Edition;
 use rustc_span::symbol::{Ident, MacroRulesNormalizedIdent};
 use rustc_span::{Span, Symbol, sym};
-use rustc_target::spec::abi::Abi;
 use serde::{Deserialize, Serialize};
 
 pub use self::Level::*;
@@ -602,7 +602,7 @@ pub enum BuiltinLintDiag {
         path: String,
         since_kind: DeprecatedSinceKind,
     },
-    MissingAbi(Span, Abi),
+    MissingAbi(Span, ExternAbi),
     UnusedDocComment(Span),
     UnusedBuiltinAttribute {
         attr_name: Symbol,
diff --git a/compiler/rustc_mir_build/Cargo.toml b/compiler/rustc_mir_build/Cargo.toml
index 529e9cc271136..119047227431d 100644
--- a/compiler/rustc_mir_build/Cargo.toml
+++ b/compiler/rustc_mir_build/Cargo.toml
@@ -7,6 +7,8 @@ edition = "2021"
 # tidy-alphabetical-start
 either = "1.5.0"
 itertools = "0.12"
+
+rustc_abi = { path = "../rustc_abi" }
 rustc_apfloat = "0.2.0"
 rustc_arena = { path = "../rustc_arena" }
 rustc_ast = { path = "../rustc_ast" }
@@ -22,7 +24,6 @@ rustc_middle = { path = "../rustc_middle" }
 rustc_pattern_analysis = { path = "../rustc_pattern_analysis" }
 rustc_session = { path = "../rustc_session" }
 rustc_span = { path = "../rustc_span" }
-rustc_target = { path = "../rustc_target" }
 rustc_trait_selection = { path = "../rustc_trait_selection" }
 tracing = "0.1"
 # tidy-alphabetical-end
diff --git a/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs b/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs
index 9e3af89105294..07964e304b9ed 100644
--- a/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs
+++ b/compiler/rustc_mir_build/src/build/custom/parse/instruction.rs
@@ -1,3 +1,4 @@
+use rustc_abi::{FieldIdx, VariantIdx};
 use rustc_middle::mir::interpret::Scalar;
 use rustc_middle::mir::tcx::PlaceTy;
 use rustc_middle::mir::*;
@@ -6,7 +7,6 @@ use rustc_middle::ty;
 use rustc_middle::ty::cast::mir_cast_kind;
 use rustc_span::Span;
 use rustc_span::source_map::Spanned;
-use rustc_target::abi::{FieldIdx, VariantIdx};
 
 use super::{PResult, ParseCtxt, parse_by_kind};
 use crate::build::custom::ParseError;
diff --git a/compiler/rustc_mir_build/src/build/expr/as_constant.rs b/compiler/rustc_mir_build/src/build/expr/as_constant.rs
index ae164cf760569..3f2e3b956fc63 100644
--- a/compiler/rustc_mir_build/src/build/expr/as_constant.rs
+++ b/compiler/rustc_mir_build/src/build/expr/as_constant.rs
@@ -1,5 +1,6 @@
 //! See docs in build/expr/mod.rs
 
+use rustc_abi::Size;
 use rustc_ast as ast;
 use rustc_hir::LangItem;
 use rustc_middle::mir::interpret::{
@@ -11,7 +12,6 @@ use rustc_middle::ty::{
     self, CanonicalUserType, CanonicalUserTypeAnnotation, Ty, TyCtxt, UserTypeAnnotationIndex,
 };
 use rustc_middle::{bug, mir, span_bug};
-use rustc_target::abi::Size;
 use tracing::{instrument, trace};
 
 use crate::build::{Builder, parse_float_into_constval};
diff --git a/compiler/rustc_mir_build/src/build/expr/as_place.rs b/compiler/rustc_mir_build/src/build/expr/as_place.rs
index c7298e3ddfa90..9f6e0735b4822 100644
--- a/compiler/rustc_mir_build/src/build/expr/as_place.rs
+++ b/compiler/rustc_mir_build/src/build/expr/as_place.rs
@@ -3,6 +3,7 @@
 use std::assert_matches::assert_matches;
 use std::iter;
 
+use rustc_abi::{FIRST_VARIANT, FieldIdx, VariantIdx};
 use rustc_hir::def_id::LocalDefId;
 use rustc_middle::hir::place::{Projection as HirProjection, ProjectionKind as HirProjectionKind};
 use rustc_middle::middle::region;
@@ -12,7 +13,6 @@ use rustc_middle::thir::*;
 use rustc_middle::ty::{self, AdtDef, CanonicalUserTypeAnnotation, Ty, Variance};
 use rustc_middle::{bug, span_bug};
 use rustc_span::Span;
-use rustc_target::abi::{FIRST_VARIANT, FieldIdx, VariantIdx};
 use tracing::{debug, instrument, trace};
 
 use crate::build::ForGuard::{OutsideGuard, RefWithinGuard};
diff --git a/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs b/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs
index 2357dd7349057..1985dd3fca0f6 100644
--- a/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs
+++ b/compiler/rustc_mir_build/src/build/expr/as_rvalue.rs
@@ -1,5 +1,6 @@
 //! See docs in `build/expr/mod.rs`.
 
+use rustc_abi::{BackendRepr, FieldIdx, Primitive};
 use rustc_hir::lang_items::LangItem;
 use rustc_index::{Idx, IndexVec};
 use rustc_middle::bug;
@@ -13,7 +14,6 @@ use rustc_middle::ty::util::IntTypeExt;
 use rustc_middle::ty::{self, Ty, UpvarArgs};
 use rustc_span::source_map::Spanned;
 use rustc_span::{DUMMY_SP, Span};
-use rustc_target::abi::{BackendRepr, FieldIdx, Primitive};
 use tracing::debug;
 
 use crate::build::expr::as_place::PlaceBase;
diff --git a/compiler/rustc_mir_build/src/build/matches/mod.rs b/compiler/rustc_mir_build/src/build/matches/mod.rs
index 51ead57020556..a62d4e9d87373 100644
--- a/compiler/rustc_mir_build/src/build/matches/mod.rs
+++ b/compiler/rustc_mir_build/src/build/matches/mod.rs
@@ -5,6 +5,7 @@
 //! This also includes code for pattern bindings in `let` statements and
 //! function parameters.
 
+use rustc_abi::VariantIdx;
 use rustc_data_structures::fx::FxIndexMap;
 use rustc_data_structures::stack::ensure_sufficient_stack;
 use rustc_hir::{BindingMode, ByRef};
@@ -15,7 +16,6 @@ use rustc_middle::thir::{self, *};
 use rustc_middle::ty::{self, CanonicalUserTypeAnnotation, Ty};
 use rustc_span::symbol::Symbol;
 use rustc_span::{BytePos, Pos, Span};
-use rustc_target::abi::VariantIdx;
 use tracing::{debug, instrument};
 
 use crate::build::ForGuard::{self, OutsideGuard, RefWithinGuard};
diff --git a/compiler/rustc_mir_build/src/build/mod.rs b/compiler/rustc_mir_build/src/build/mod.rs
index e15ea4d8d8be2..1f853f6e1c302 100644
--- a/compiler/rustc_mir_build/src/build/mod.rs
+++ b/compiler/rustc_mir_build/src/build/mod.rs
@@ -1,4 +1,5 @@
 use itertools::Itertools;
+use rustc_abi::{ExternAbi, FieldIdx};
 use rustc_apfloat::Float;
 use rustc_apfloat::ieee::{Double, Half, Quad, Single};
 use rustc_ast::attr;
@@ -20,8 +21,6 @@ use rustc_middle::ty::{self, ScalarInt, Ty, TyCtxt, TypeVisitableExt, TypingMode
 use rustc_middle::{bug, span_bug};
 use rustc_span::symbol::sym;
 use rustc_span::{Span, Symbol};
-use rustc_target::abi::FieldIdx;
-use rustc_target::spec::abi::Abi;
 
 use super::lints;
 use crate::build::expr::as_place::PlaceBuilder;
@@ -467,7 +466,7 @@ fn construct_fn<'tcx>(
     if let DefKind::Closure = tcx.def_kind(fn_def) {
         // HACK(eddyb) Avoid having RustCall on closures,
         // as it adds unnecessary (and wrong) auto-tupling.
-        abi = Abi::Rust;
+        abi = ExternAbi::Rust;
     }
 
     let arguments = &thir.params;
@@ -540,7 +539,7 @@ fn construct_fn<'tcx>(
 
     let mut body = builder.finish();
 
-    body.spread_arg = if abi == Abi::RustCall {
+    body.spread_arg = if abi == ExternAbi::RustCall {
         // RustCall pseudo-ABI untuples the last argument.
         Some(Local::new(arguments.len()))
     } else {
diff --git a/compiler/rustc_mir_build/src/thir/cx/expr.rs b/compiler/rustc_mir_build/src/thir/cx/expr.rs
index d20e5fcf4ec6d..793ef9c4556fb 100644
--- a/compiler/rustc_mir_build/src/thir/cx/expr.rs
+++ b/compiler/rustc_mir_build/src/thir/cx/expr.rs
@@ -1,4 +1,5 @@
 use itertools::Itertools;
+use rustc_abi::{FIRST_VARIANT, FieldIdx};
 use rustc_data_structures::stack::ensure_sufficient_stack;
 use rustc_hir as hir;
 use rustc_hir::def::{CtorKind, CtorOf, DefKind, Res};
@@ -18,7 +19,6 @@ use rustc_middle::ty::{
 };
 use rustc_middle::{bug, span_bug};
 use rustc_span::{Span, sym};
-use rustc_target::abi::{FIRST_VARIANT, FieldIdx};
 use tracing::{debug, info, instrument, trace};
 
 use crate::errors;
diff --git a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs
index c89f526aa1758..983853d2de186 100644
--- a/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs
+++ b/compiler/rustc_mir_build/src/thir/pattern/const_to_pat.rs
@@ -1,4 +1,5 @@
 use either::Either;
+use rustc_abi::{FieldIdx, VariantIdx};
 use rustc_apfloat::Float;
 use rustc_hir as hir;
 use rustc_index::Idx;
@@ -9,7 +10,6 @@ use rustc_middle::mir::interpret::ErrorHandled;
 use rustc_middle::thir::{FieldPat, Pat, PatKind};
 use rustc_middle::ty::{self, Ty, TyCtxt, TypeVisitableExt, TypingMode, ValTree};
 use rustc_span::Span;
-use rustc_target::abi::{FieldIdx, VariantIdx};
 use rustc_trait_selection::traits::ObligationCause;
 use rustc_trait_selection::traits::query::evaluate_obligation::InferCtxtExt;
 use tracing::{debug, instrument, trace};
diff --git a/compiler/rustc_mir_build/src/thir/pattern/mod.rs b/compiler/rustc_mir_build/src/thir/pattern/mod.rs
index 56e5156a91fc0..ec852add94db7 100644
--- a/compiler/rustc_mir_build/src/thir/pattern/mod.rs
+++ b/compiler/rustc_mir_build/src/thir/pattern/mod.rs
@@ -5,6 +5,7 @@ mod const_to_pat;
 
 use std::cmp::Ordering;
 
+use rustc_abi::{FieldIdx, Integer};
 use rustc_errors::codes::*;
 use rustc_hir::def::{CtorOf, DefKind, Res};
 use rustc_hir::pat_util::EnumerateAndAdjustIterator;
@@ -20,7 +21,6 @@ use rustc_middle::ty::{self, CanonicalUserTypeAnnotation, Ty, TyCtxt, TypeVisita
 use rustc_middle::{bug, span_bug};
 use rustc_span::def_id::LocalDefId;
 use rustc_span::{ErrorGuaranteed, Span};
-use rustc_target::abi::{FieldIdx, Integer};
 use tracing::{debug, instrument};
 
 pub(crate) use self::check_match::check_match;