Add arm64e-apple-tvos target

Author: arttet

compiler/rustc_target/src/spec/mod.rs

@@ -1714,8 +1714,10 @@ supported_targets! {
     ("x86_64-apple-ios-macabi", x86_64_apple_ios_macabi),
     ("aarch64-apple-ios-macabi", aarch64_apple_ios_macabi),
     ("aarch64-apple-ios-sim", aarch64_apple_ios_sim),
+
     ("aarch64-apple-tvos", aarch64_apple_tvos),
     ("aarch64-apple-tvos-sim", aarch64_apple_tvos_sim),
+    ("arm64e-apple-tvos", arm64e_apple_tvos),
     ("x86_64-apple-tvos", x86_64_apple_tvos),
 
     ("armv7k-apple-watchos", armv7k_apple_watchos),

compiler/rustc_target/src/spec/targets/arm64e_apple_tvos.rs

@@ -0,0 +1,24 @@
+use crate::spec::base::apple::{base, Arch, TargetAbi};
+use crate::spec::{FramePointer, Target, TargetOptions};
+
+pub(crate) fn target() -> Target {
+    let (opts, llvm_target, arch) = base("tvos", Arch::Arm64e, TargetAbi::Normal);
+    Target {
+        llvm_target,
+        metadata: crate::spec::TargetMetadata {
+            description: Some("ARM64e Apple tvOS".into()),
+            tier: Some(3),
+            host_tools: Some(false),
+            std: Some(true),
+        },
+        pointer_width: 64,
+        data_layout: "e-m:o-i64:64-i128:128-n32:64-S128-Fn32".into(),
+        arch,
+        options: TargetOptions {
+            features: "+neon,+fp-armv8,+apple-a12,+v8.3a,+pauth".into(),
+            max_atomic_width: Some(128),
+            frame_pointer: FramePointer::NonLeaf,
+            ..opts
+        },
+    }
+}

src/doc/rustc/src/platform-support.md

@@ -245,8 +245,9 @@ host tools.
 
 target | std | host | notes
 -------|:---:|:----:|-------
-[`arm64e-apple-ios`](platform-support/arm64e-apple-ios.md) | ✓ | | ARM64e Apple iOS
 [`arm64e-apple-darwin`](platform-support/arm64e-apple-darwin.md)  | ✓ | ✓ | ARM64e Apple Darwin
+[`arm64e-apple-ios`](platform-support/arm64e-apple-ios.md) | ✓ | | ARM64e Apple iOS
+[`arm64e-apple-tvos`](platform-support/arm64e-apple-tvos.md)  | ✓ | | ARM64e Apple tvOS
 [`aarch64-apple-tvos`](platform-support/apple-tvos.md) | ✓ |  | ARM64 tvOS
 [`aarch64-apple-tvos-sim`](platform-support/apple-tvos.md) | ✓ |  | ARM64 tvOS Simulator
 [`aarch64-apple-watchos`](platform-support/apple-watchos.md) | ✓ |  | ARM64 Apple WatchOS

src/doc/rustc/src/platform-support/arm64e-apple-tvos.md

@@ -0,0 +1,37 @@
+# `arm64e-apple-tvos`
+
+**Tier: 3**
+
+ARM64e tvOS (10.0+)
+
+## Target maintainers
+
+- Artyom Tetyukhin ([@arttet](https://github.com/https://github.com/arttet))
+
+## Requirements
+
+This target is cross-compiled and supports `std`.
+To build this target Xcode 12 or higher on macOS is required.
+
+## Building the target
+
+You can build Rust with support for the targets by adding it to the `target` list in `config.toml`:
+
+```toml
+[build]
+target = [ "arm64e-apple-tvos" ]
+```
+
+## Building Rust programs
+
+Rust does not yet ship pre-compiled artifacts for this target.
+To compile for this target, you will need to build Rust with the target enabled (see [Building the target](#building-the-target) above).
+
+## Testing
+
+The target does support running binaries on tvOS platforms with `arm64e` architecture.
+
+## Cross-compilation toolchains and C code
+
+The targets do support `C` code.
+To build compatible `C` code, you have to use XCode with the same compiler and flags.

src/tools/build-manifest/src/main.rs

@@ -51,9 +51,7 @@ static HOSTS: &[&str] = &[
 
 static TARGETS: &[&str] = &[
     "aarch64-apple-darwin",
-    "arm64e-apple-darwin",
     "aarch64-apple-ios",
-    "arm64e-apple-ios",
     "aarch64-apple-ios-macabi",
     "aarch64-apple-ios-sim",
     "aarch64-unknown-fuchsia",
@@ -68,6 +66,9 @@ static TARGETS: &[&str] = &[
     "aarch64-unknown-none-softfloat",
     "aarch64-unknown-redox",
     "aarch64-unknown-uefi",
+    "arm64e-apple-darwin",
+    "arm64e-apple-ios",
+    "arm64e-apple-tvos",
     "arm-linux-androideabi",
     "arm-unknown-linux-gnueabi",
     "arm-unknown-linux-gnueabihf",

tests/assembly/targets/targets-macho.rs

@@ -18,6 +18,9 @@
 //@ revisions: aarch64_apple_tvos_sim
 //@ [aarch64_apple_tvos_sim] compile-flags: --target aarch64-apple-tvos-sim
 //@ [aarch64_apple_tvos_sim] needs-llvm-components: aarch64
+//@ revisions: arm64e_apple_tvos
+//@ [arm64e_apple_tvos] compile-flags: --target arm64e-apple-tvos
+//@ [arm64e_apple_tvos] needs-llvm-components: aarch64
 //@ revisions: aarch64_apple_watchos
 //@ [aarch64_apple_watchos] compile-flags: --target aarch64-apple-watchos
 //@ [aarch64_apple_watchos] needs-llvm-components: aarch64