From d39a6377e9cfa108eb181ea892366e6b01fd753f Mon Sep 17 00:00:00 2001
From: Adam Gemmell <adam.gemmell@arm.com>
Date: Mon, 31 Jan 2022 13:04:27 +0000
Subject: Split PAuth target feature

---
 compiler/rustc_codegen_ssa/src/target_features.rs | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'compiler/rustc_codegen_ssa/src')

diff --git a/compiler/rustc_codegen_ssa/src/target_features.rs b/compiler/rustc_codegen_ssa/src/target_features.rs
index 63cc6faf9ec..f31b0ee592e 100644
--- a/compiler/rustc_codegen_ssa/src/target_features.rs
+++ b/compiler/rustc_codegen_ssa/src/target_features.rs
@@ -74,8 +74,10 @@ const AARCH64_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
     ("ssbs", Some(sym::aarch64_target_feature)),
     // FEAT_SB
     ("sb", Some(sym::aarch64_target_feature)),
-    // FEAT_PAUTH
-    ("pauth", Some(sym::aarch64_target_feature)),
+    // FEAT_PAUTH (address authentication)
+    ("paca", Some(sym::aarch64_target_feature)),
+    // FEAT_PAUTH (generic authentication)
+    ("pacg", Some(sym::aarch64_target_feature)),
     // FEAT_DPB
     ("dpb", Some(sym::aarch64_target_feature)),
     // FEAT_DPB2
@@ -137,6 +139,8 @@ const AARCH64_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
     ("v8.7a", Some(sym::aarch64_target_feature)),
 ];
 
+const AARCH64_TIED_FEATURES: &[&[&str]] = &[&["paca", "pacg"]];
+
 const X86_ALLOWED_FEATURES: &[(&str, Option<Symbol>)] = &[
     ("adx", Some(sym::adx_target_feature)),
     ("aes", None),
@@ -256,6 +260,13 @@ pub fn supported_target_features(sess: &Session) -> &'static [(&'static str, Opt
     }
 }
 
+pub fn tied_target_features(sess: &Session) -> &'static [&'static [&'static str]] {
+    match &*sess.target.arch {
+        "aarch64" => AARCH64_TIED_FEATURES,
+        _ => &[],
+    }
+}
+
 pub(crate) fn provide(providers: &mut Providers) {
     providers.supported_target_features = |tcx, cnum| {
         assert_eq!(cnum, LOCAL_CRATE);
-- 
cgit 1.4.1-3-g733a5