compiler/rustc_target/src/spec/aarch64_apple_ios.rs

use super::apple_base::{ios_llvm_target, opts, Arch};
use crate::spec::{FramePointer, SanitizerSet, Target, TargetOptions};

pub fn target() -> Target {
    let arch = Arch::Arm64;
    let mut base = opts("ios", arch);
    base.supported_sanitizers = SanitizerSet::ADDRESS | SanitizerSet::THREAD;

    Target {
        // Clang automatically chooses a more specific target based on
        // IPHONEOS_DEPLOYMENT_TARGET.
        // This is required for the target to pick the right
        // MACH-O commands, so we do too.
        llvm_target: ios_llvm_target(arch).into(),
        pointer_width: 64,
        data_layout: "e-m:o-i64:64-i128:128-n32:64-S128".into(),
        arch: arch.target_arch(),
        options: TargetOptions {
            features: "+neon,+fp-armv8,+apple-a7".into(),
            max_atomic_width: Some(128),
            forces_embed_bitcode: true,
            frame_pointer: FramePointer::NonLeaf,
            // Taken from a clang build on Xcode 11.4.1.
            // These arguments are not actually invoked - they just have
            // to look right to pass App Store validation.
            bitcode_llvm_cmdline: "-triple\0\
                arm64-apple-ios11.0.0\0\
                -emit-obj\0\
                -disable-llvm-passes\0\
                -target-abi\0\
                darwinpcs\0\
                -Os\0"
                .into(),
            ..base
        },
    }
}