compiler/rustc_target/src/spec/x86_64_apple_darwin.rs

   1 use crate::spec::{LinkerFlavor, StackProbeType, Target, TargetOptions};
   2
   3 pub fn target() -> Target {
   4     let mut base = super::apple_base::opts("macos");
   5     base.cpu = "core2".to_string();
   6     base.max_atomic_width = Some(128); // core2 support cmpxchg16b
   7     base.eliminate_frame_pointer = false;
   8     base.pre_link_args.insert(
   9         LinkerFlavor::Gcc,
  10         vec!["-m64".to_string(), "-arch".to_string(), "x86_64".to_string()],
  11     );
  12     base.link_env_remove.extend(super::apple_base::macos_link_env_remove());
  13     // don't use probe-stack=inline-asm until rust#83139 and rust#84667 are resolved
  14     base.stack_probes = StackProbeType::Call;
  15
  16     // Clang automatically chooses a more specific target based on
  17     // MACOSX_DEPLOYMENT_TARGET.  To enable cross-language LTO to work
  18     // correctly, we do too.
  19     let arch = "x86_64";
  20     let llvm_target = super::apple_base::macos_llvm_target(&arch);
  21
  22     Target {
  23         llvm_target,
  24         pointer_width: 64,
  25         data_layout: "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128"
  26             .to_string(),
  27         arch: arch.to_string(),
  28         options: TargetOptions { mcount: "\u{1}mcount".to_string(), ..base },
  29     }
  30 }