From 9835e2ae736235810b4ea1c162ca5e65c547e770 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sat, 18 May 2024 04:49:50 +0200 Subject: Merging upstream version 1.71.1+dfsg1. Signed-off-by: Daniel Baumann --- .../rustc_target/src/spec/x86_64h_apple_darwin.rs | 44 ++++++++++++++++++++++ 1 file changed, 44 insertions(+) create mode 100644 compiler/rustc_target/src/spec/x86_64h_apple_darwin.rs (limited to 'compiler/rustc_target/src/spec/x86_64h_apple_darwin.rs') diff --git a/compiler/rustc_target/src/spec/x86_64h_apple_darwin.rs b/compiler/rustc_target/src/spec/x86_64h_apple_darwin.rs new file mode 100644 index 000000000..54f7490b2 --- /dev/null +++ b/compiler/rustc_target/src/spec/x86_64h_apple_darwin.rs @@ -0,0 +1,44 @@ +use super::apple_base::{macos_llvm_target, opts, Arch}; +use crate::spec::{Cc, FramePointer, LinkerFlavor, Lld, SanitizerSet}; +use crate::spec::{StackProbeType, Target, TargetOptions}; + +pub fn target() -> Target { + let arch = Arch::X86_64h; + let mut base = opts("macos", arch); + base.max_atomic_width = Some(128); + base.frame_pointer = FramePointer::Always; + base.add_pre_link_args(LinkerFlavor::Darwin(Cc::Yes, Lld::No), &["-m64"]); + base.stack_probes = StackProbeType::X86; + base.supported_sanitizers = + SanitizerSet::ADDRESS | SanitizerSet::CFI | SanitizerSet::LEAK | SanitizerSet::THREAD; + + // x86_64h is core2-avx without a few of the features which would otherwise + // be guaranteed, so we need to disable those. This imitates clang's logic: + // - https://github.com/llvm/llvm-project/blob/bd1f7c417/clang/lib/Driver/ToolChains/Arch/X86.cpp#L77-L78 + // - https://github.com/llvm/llvm-project/blob/bd1f7c417/clang/lib/Driver/ToolChains/Arch/X86.cpp#L133-L141 + // + // FIXME: Sadly, turning these off here disables them in such a way that they + // aren't re-enabled by `-Ctarget-cpu=native` (on a machine that has them). + // It would be nice if this were not the case, but fixing it seems tricky + // (and given that the main use-case for this target is for use in universal + // binaries, probably not that important). + base.features = "-rdrnd,-aes,-pclmul,-rtm,-fsgsbase".into(); + // Double-check that the `cpu` is what we expect (if it's not the list above + // may need updating). + assert_eq!( + base.cpu, "core-avx2", + "you need to adjust the feature list in x86_64h-apple-darwin if you change this", + ); + + Target { + // Clang automatically chooses a more specific target based on + // MACOSX_DEPLOYMENT_TARGET. To enable cross-language LTO to work + // correctly, we do too. + llvm_target: macos_llvm_target(arch).into(), + pointer_width: 64, + data_layout: "e-m:o-p270:32:32-p271:32:32-p272:64:64-i64:64-f80:128-n8:16:32:64-S128" + .into(), + arch: arch.target_arch(), + options: TargetOptions { mcount: "\u{1}mcount".into(), ..base }, + } +} -- cgit v1.2.3