diff --git a/.github/workflows/main.yml b/.github/workflows/main.yml
index e6d75177b27..de3c89f3383 100644
--- a/.github/workflows/main.yml
+++ b/.github/workflows/main.yml
@@ -111,7 +111,7 @@ jobs:
         ./y.rs test
 
     - name: Package prebuilt cg_clif
-      run: tar cvfJ cg_clif.tar.xz build
+      run: tar cvfJ cg_clif.tar.xz dist
 
     - name: Upload prebuilt cg_clif
       if: matrix.env.TARGET_TRIPLE != 'x86_64-pc-windows-gnu'
@@ -213,7 +213,7 @@ jobs:
 
     - name: Package prebuilt cg_clif
       # don't use compression as xzip isn't supported by tar on windows and bzip2 hangs
-      run: tar cvf cg_clif.tar build
+      run: tar cvf cg_clif.tar dist
 
     - name: Upload prebuilt cg_clif
       uses: actions/upload-artifact@v3
diff --git a/.gitignore b/.gitignore
index fae09592c6a..b443fd58a1b 100644
--- a/.gitignore
+++ b/.gitignore
@@ -14,5 +14,6 @@ perf.data.old
 /build_sysroot/sysroot_src
 /build_sysroot/compiler-builtins
 /build_sysroot/rustc_version
+/dist
 /rust
 /download
diff --git a/Readme.md b/Readme.md
index 1e84c7fa365..0e9c77244d4 100644
--- a/Readme.md
+++ b/Readme.md
@@ -37,7 +37,7 @@ Assuming `$cg_clif_dir` is the directory you cloned this repo into and you follo
 In the directory with your project (where you can do the usual `cargo build`), run:
 
 ```bash
-$ $cg_clif_dir/build/cargo-clif build
+$ $cg_clif_dir/dist/cargo-clif build
 ```
 
 This will build your project with rustc_codegen_cranelift instead of the usual LLVM backend.
diff --git a/build_system/abi_cafe.rs b/build_system/abi_cafe.rs
index 8949f9f7e7d..bff5b8f4102 100644
--- a/build_system/abi_cafe.rs
+++ b/build_system/abi_cafe.rs
@@ -14,7 +14,7 @@
 pub(crate) fn run(
     channel: &str,
     sysroot_kind: SysrootKind,
-    target_dir: &Path,
+    dist_dir: &Path,
     cg_clif_dylib: &Path,
     host_triple: &str,
     target_triple: &str,
@@ -33,7 +33,7 @@ pub(crate) fn run(
     build_sysroot::build_sysroot(
         channel,
         sysroot_kind,
-        target_dir,
+        dist_dir,
         cg_clif_dylib,
         host_triple,
         target_triple,
diff --git a/build_system/build_sysroot.rs b/build_system/build_sysroot.rs
index 731b94472ab..4b21df85f5f 100644
--- a/build_system/build_sysroot.rs
+++ b/build_system/build_sysroot.rs
@@ -9,21 +9,21 @@
 pub(crate) fn build_sysroot(
     channel: &str,
     sysroot_kind: SysrootKind,
-    target_dir: &Path,
+    dist_dir: &Path,
     cg_clif_dylib_src: &Path,
     host_triple: &str,
     target_triple: &str,
 ) {
     eprintln!("[BUILD] sysroot {:?}", sysroot_kind);
 
-    if target_dir.exists() {
-        fs::remove_dir_all(target_dir).unwrap();
+    if dist_dir.exists() {
+        fs::remove_dir_all(dist_dir).unwrap();
     }
-    fs::create_dir_all(target_dir.join("bin")).unwrap();
-    fs::create_dir_all(target_dir.join("lib")).unwrap();
+    fs::create_dir_all(dist_dir.join("bin")).unwrap();
+    fs::create_dir_all(dist_dir.join("lib")).unwrap();
 
     // Copy the backend
-    let cg_clif_dylib_path = target_dir
+    let cg_clif_dylib_path = dist_dir
         .join(if cfg!(windows) {
             // Windows doesn't have rpath support, so the cg_clif dylib needs to be next to the
             // binaries.
@@ -42,14 +42,14 @@ pub(crate) fn build_sysroot(
         build_cargo_wrapper_cmd
             .arg(PathBuf::from("scripts").join(format!("{wrapper}.rs")))
             .arg("-o")
-            .arg(target_dir.join(wrapper_name))
+            .arg(dist_dir.join(wrapper_name))
             .arg("-g");
         spawn_and_wait(build_cargo_wrapper_cmd);
     }
 
     let default_sysroot = super::rustc_info::get_default_sysroot();
 
-    let rustlib = target_dir.join("lib").join("rustlib");
+    let rustlib = dist_dir.join("lib").join("rustlib");
     let host_rustlib_lib = rustlib.join(host_triple).join("lib");
     let target_rustlib_lib = rustlib.join(target_triple).join("lib");
     fs::create_dir_all(&host_rustlib_lib).unwrap();
@@ -114,7 +114,7 @@ pub(crate) fn build_sysroot(
         SysrootKind::Clif => {
             build_clif_sysroot_for_triple(
                 channel,
-                target_dir,
+                dist_dir,
                 host_triple,
                 &cg_clif_dylib_path,
                 None,
@@ -129,7 +129,7 @@ pub(crate) fn build_sysroot(
                 };
                 build_clif_sysroot_for_triple(
                     channel,
-                    target_dir,
+                    dist_dir,
                     target_triple,
                     &cg_clif_dylib_path,
                     linker,
@@ -142,7 +142,7 @@ pub(crate) fn build_sysroot(
                 let file = file.unwrap().path();
                 let filename = file.file_name().unwrap().to_str().unwrap();
                 if filename.contains("std-") && !filename.contains(".rlib") {
-                    try_hard_link(&file, target_dir.join("lib").join(file.file_name().unwrap()));
+                    try_hard_link(&file, dist_dir.join("lib").join(file.file_name().unwrap()));
                 }
             }
         }
@@ -153,7 +153,7 @@ pub(crate) fn build_sysroot(
 
 fn build_clif_sysroot_for_triple(
     channel: &str,
-    target_dir: &Path,
+    dist_dir: &Path,
     triple: &str,
     cg_clif_dylib_path: &Path,
     linker: Option<&str>,
@@ -189,7 +189,7 @@ fn build_clif_sysroot_for_triple(
     // Build sysroot
     let mut rustflags = "-Zforce-unstable-if-unmarked -Cpanic=abort".to_string();
     rustflags.push_str(&format!(" -Zcodegen-backend={}", cg_clif_dylib_path.to_str().unwrap()));
-    rustflags.push_str(&format!(" --sysroot={}", target_dir.to_str().unwrap()));
+    rustflags.push_str(&format!(" --sysroot={}", dist_dir.to_str().unwrap()));
     if channel == "release" {
         rustflags.push_str(" -Zmir-opt-level=3");
     }
@@ -221,7 +221,7 @@ fn build_clif_sysroot_for_triple(
         };
         try_hard_link(
             entry.path(),
-            target_dir.join("lib").join("rustlib").join(triple).join("lib").join(entry.file_name()),
+            dist_dir.join("lib").join("rustlib").join(triple).join("lib").join(entry.file_name()),
         );
     }
 }
diff --git a/build_system/mod.rs b/build_system/mod.rs
index b25270d832c..531f42cf873 100644
--- a/build_system/mod.rs
+++ b/build_system/mod.rs
@@ -17,10 +17,10 @@ fn usage() {
     eprintln!("Usage:");
     eprintln!("  ./y.rs prepare");
     eprintln!(
-        "  ./y.rs build [--debug] [--sysroot none|clif|llvm] [--target-dir DIR] [--no-unstable-features]"
+        "  ./y.rs build [--debug] [--sysroot none|clif|llvm] [--dist-dir DIR] [--no-unstable-features]"
     );
     eprintln!(
-        "  ./y.rs test [--debug] [--sysroot none|clif|llvm] [--target-dir DIR] [--no-unstable-features]"
+        "  ./y.rs test [--debug] [--sysroot none|clif|llvm] [--dist-dir DIR] [--no-unstable-features]"
     );
 }
 
@@ -75,15 +75,15 @@ pub fn main() {
         }
     };
 
-    let mut target_dir = PathBuf::from("build");
+    let mut dist_dir = PathBuf::from("dist");
     let mut channel = "release";
     let mut sysroot_kind = SysrootKind::Clif;
     let mut use_unstable_features = true;
     while let Some(arg) = args.next().as_deref() {
         match arg {
-            "--target-dir" => {
-                target_dir = PathBuf::from(args.next().unwrap_or_else(|| {
-                    arg_error!("--target-dir requires argument");
+            "--dist-dir" => {
+                dist_dir = PathBuf::from(args.next().unwrap_or_else(|| {
+                    arg_error!("--dist-dir requires argument");
                 }))
             }
             "--debug" => channel = "debug",
@@ -101,7 +101,7 @@ pub fn main() {
             arg => arg_error!("Unexpected argument {}", arg),
         }
     }
-    target_dir = std::env::current_dir().unwrap().join(target_dir);
+    dist_dir = std::env::current_dir().unwrap().join(dist_dir);
 
     let host_triple = if let Ok(host_triple) = std::env::var("HOST_TRIPLE") {
         host_triple
@@ -128,7 +128,7 @@ pub fn main() {
             tests::run_tests(
                 channel,
                 sysroot_kind,
-                &target_dir,
+                &dist_dir,
                 &cg_clif_dylib,
                 &host_triple,
                 &target_triple,
@@ -137,7 +137,7 @@ pub fn main() {
             abi_cafe::run(
                 channel,
                 sysroot_kind,
-                &target_dir,
+                &dist_dir,
                 &cg_clif_dylib,
                 &host_triple,
                 &target_triple,
@@ -147,7 +147,7 @@ pub fn main() {
             build_sysroot::build_sysroot(
                 channel,
                 sysroot_kind,
-                &target_dir,
+                &dist_dir,
                 &cg_clif_dylib,
                 &host_triple,
                 &target_triple,
diff --git a/build_system/tests.rs b/build_system/tests.rs
index b1c5c648839..aa46cd0a250 100644
--- a/build_system/tests.rs
+++ b/build_system/tests.rs
@@ -274,7 +274,7 @@ const fn new(config: &'static str, func: &'static dyn Fn(&TestRunner)) -> Self {
             eprintln!("[BENCH COMPILE] ebobby/simple-raytracer");
             let cargo_clif = env::current_dir()
                 .unwrap()
-                .join("build")
+                .join("dist")
                 .join(get_wrapper_file_name("cargo-clif", "bin"));
             let source_dir = SIMPLE_RAYTRACER.source_dir();
             let manifest_path = SIMPLE_RAYTRACER.manifest_path();
@@ -432,7 +432,7 @@ const fn new(config: &'static str, func: &'static dyn Fn(&TestRunner)) -> Self {
 pub(crate) fn run_tests(
     channel: &str,
     sysroot_kind: SysrootKind,
-    target_dir: &Path,
+    dist_dir: &Path,
     cg_clif_dylib: &Path,
     host_triple: &str,
     target_triple: &str,
@@ -443,7 +443,7 @@ pub(crate) fn run_tests(
         build_sysroot::build_sysroot(
             channel,
             SysrootKind::None,
-            &target_dir,
+            &dist_dir,
             cg_clif_dylib,
             &host_triple,
             &target_triple,
@@ -462,7 +462,7 @@ pub(crate) fn run_tests(
         build_sysroot::build_sysroot(
             channel,
             sysroot_kind,
-            &target_dir,
+            &dist_dir,
             cg_clif_dylib,
             &host_triple,
             &target_triple,
@@ -503,11 +503,11 @@ pub fn new(host_triple: String, target_triple: String) -> Self {
             target_triple.contains("x86_64") && is_native && !host_triple.contains("windows");
 
         let mut rustc_clif = root_dir.clone();
-        rustc_clif.push("build");
+        rustc_clif.push("dist");
         rustc_clif.push(get_wrapper_file_name("rustc-clif", "bin"));
 
         let mut rustdoc_clif = root_dir.clone();
-        rustdoc_clif.push("build");
+        rustdoc_clif.push("dist");
         rustdoc_clif.push(get_wrapper_file_name("rustdoc-clif", "bin"));
 
         let mut rustflags = env::var("RUSTFLAGS").ok().unwrap_or("".to_string());
diff --git a/clean_all.sh b/clean_all.sh
index fedab2433aa..cd20f3ea3f1 100755
--- a/clean_all.sh
+++ b/clean_all.sh
@@ -2,9 +2,9 @@
 set -e
 
 rm -rf build_sysroot/{sysroot_src/,target/,compiler-builtins/,rustc_version}
-rm -rf target/ build/ perf.data{,.old} y.bin
+rm -rf target/ dist/ perf.data{,.old} y.bin
 rm -rf download/
 
 # Kept for now in case someone updates their checkout of cg_clif before running clean_all.sh
 # FIXME remove at some point in the future
-rm -rf rand/ regex/ simple-raytracer/ portable-simd/ abi-checker/ abi-cafe/
+rm -rf rand/ regex/ simple-raytracer/ portable-simd/ abi-checker/ abi-cafe/ build/
diff --git a/docs/usage.md b/docs/usage.md
index 33f146e7ba2..4c2b0fa1704 100644
--- a/docs/usage.md
+++ b/docs/usage.md
@@ -9,7 +9,7 @@ Assuming `$cg_clif_dir` is the directory you cloned this repo into and you follo
 In the directory with your project (where you can do the usual `cargo build`), run:
 
 ```bash
-$ $cg_clif_dir/build/cargo-clif build
+$ $cg_clif_dir/dist/cargo-clif build
 ```
 
 This will build your project with rustc_codegen_cranelift instead of the usual LLVM backend.
@@ -19,7 +19,7 @@ This will build your project with rustc_codegen_cranelift instead of the usual L
 > You should prefer using the Cargo method.
 
 ```bash
-$ $cg_clif_dir/build/rustc-clif my_crate.rs
+$ $cg_clif_dir/dist/rustc-clif my_crate.rs
 ```
 
 ## Jit mode
@@ -32,20 +32,20 @@ In jit mode cg_clif will immediately execute your code without creating an execu
 > The jit mode will probably need cargo integration to make this possible.
 
 ```bash
-$ $cg_clif_dir/build/cargo-clif jit
+$ $cg_clif_dir/dist/cargo-clif jit
 ```
 
 or
 
 ```bash
-$ $cg_clif_dir/build/rustc-clif -Zunstable-features -Cllvm-args=mode=jit -Cprefer-dynamic my_crate.rs
+$ $cg_clif_dir/dist/rustc-clif -Zunstable-features -Cllvm-args=mode=jit -Cprefer-dynamic my_crate.rs
 ```
 
 There is also an experimental lazy jit mode. In this mode functions are only compiled once they are
 first called.
 
 ```bash
-$ $cg_clif_dir/build/cargo-clif lazy-jit
+$ $cg_clif_dir/dist/cargo-clif lazy-jit
 ```
 
 ## Shell
@@ -54,7 +54,7 @@ These are a few functions that allow you to easily run rust code from the shell
 
 ```bash
 function jit_naked() {
-    echo "$@" | $cg_clif_dir/build/rustc-clif - -Zunstable-features -Cllvm-args=mode=jit -Cprefer-dynamic
+    echo "$@" | $cg_clif_dir/dist/rustc-clif - -Zunstable-features -Cllvm-args=mode=jit -Cprefer-dynamic
 }
 
 function jit() {
diff --git a/scripts/filter_profile.rs b/scripts/filter_profile.rs
index e6f60d1c0cb..f782671fe36 100755
--- a/scripts/filter_profile.rs
+++ b/scripts/filter_profile.rs
@@ -2,7 +2,7 @@
 #![forbid(unsafe_code)]/* This line is ignored by bash
 # This block is ignored by rustc
 pushd $(dirname "$0")/../
-RUSTC="$(pwd)/build/rustc-clif"
+RUSTC="$(pwd)/dist/rustc-clif"
 popd
 PROFILE=$1 OUTPUT=$2 exec $RUSTC -Zunstable-options -Cllvm-args=mode=jit -Cprefer-dynamic $0
 #*/
diff --git a/scripts/setup_rust_fork.sh b/scripts/setup_rust_fork.sh
index 5a73cb0e2c2..6c64b7de7da 100644
--- a/scripts/setup_rust_fork.sh
+++ b/scripts/setup_rust_fork.sh
@@ -36,7 +36,7 @@ changelog-seen = 2
 ninja = false
 
 [build]
-rustc = "$(pwd)/../build/rustc-clif"
+rustc = "$(pwd)/../dist/rustc-clif"
 cargo = "$(rustup which cargo)"
 full-bootstrap = true
 local-rebuild = true
diff --git a/scripts/test_rustc_tests.sh b/scripts/test_rustc_tests.sh
index 74a99802b10..d2656f783ad 100755
--- a/scripts/test_rustc_tests.sh
+++ b/scripts/test_rustc_tests.sh
@@ -89,7 +89,7 @@ rm src/test/ui/consts/issue-33537.rs # same
 # doesn't work due to the way the rustc test suite is invoked.
 # should work when using ./x.py test the way it is intended
 # ============================================================
-rm -r src/test/run-make/emit-shared-files # requires the rustdoc executable in build/bin/
+rm -r src/test/run-make/emit-shared-files # requires the rustdoc executable in dist/bin/
 rm -r src/test/run-make/unstable-flag-required # same
 rm -r src/test/run-make/rustdoc-* # same
 rm -r src/test/run-make/issue-88756-default-output # same
diff --git a/src/intrinsics/llvm_aarch64.rs b/src/intrinsics/llvm_aarch64.rs
index 7959176ac85..b431158d269 100644
--- a/src/intrinsics/llvm_aarch64.rs
+++ b/src/intrinsics/llvm_aarch64.rs
@@ -16,6 +16,10 @@ pub(crate) fn codegen_aarch64_llvm_intrinsic_call<'tcx>(
     // llvm.aarch64.neon.sqshl.v*i*
 
     match intrinsic {
+        "llvm.aarch64.isb" => {
+            fx.bcx.ins().fence();
+        }
+
         _ if intrinsic.starts_with("llvm.aarch64.neon.abs.v") => {
             intrinsic_args!(fx, args => (a); intrinsic);