diff --git a/src/libpanic_unwind/lib.rs b/src/libpanic_unwind/lib.rs
index 0a2a0e9..f791fe8 100644
--- a/src/libpanic_unwind/lib.rs
+++ b/src/libpanic_unwind/lib.rs
@@ -47,9 +47,6 @@
     } else if #[cfg(target_os = "hermit")] {
         #[path = "hermit.rs"]
         mod real_imp;
-    } else if #[cfg(all(target_env = "msvc", target_arch = "aarch64"))] {
-        #[path = "dummy.rs"]
-        mod real_imp;
     } else if #[cfg(target_env = "msvc")] {
         #[path = "seh.rs"]
         mod real_imp;
diff --git a/src/libpanic_unwind/seh.rs b/src/libpanic_unwind/seh.rs
index 10b765a..9eff37f 100644
--- a/src/libpanic_unwind/seh.rs
+++ b/src/libpanic_unwind/seh.rs
@@ -117,7 +117,7 @@
     }
 }
 
-#[cfg(any(target_arch = "x86_64", target_arch = "arm"))]
+#[cfg(not(target_arch = "x86"))]
 #[macro_use]
 mod imp {
     pub type ptr_t = u32;
diff --git a/src/librustc_target/spec/aarch64_pc_windows_msvc.rs b/src/librustc_target/spec/aarch64_pc_windows_msvc.rs
index 7a46c7d..8c03f1e 100644
--- a/src/librustc_target/spec/aarch64_pc_windows_msvc.rs
+++ b/src/librustc_target/spec/aarch64_pc_windows_msvc.rs
@@ -1,4 +1,4 @@
-use crate::spec::{LinkerFlavor, PanicStrategy, Target, TargetResult};
+use crate::spec::{LinkerFlavor, Target, TargetResult};
 
 pub fn target() -> TargetResult {
     let mut base = super::windows_msvc_base::opts();
@@ -6,9 +6,6 @@
     base.has_elf_tls = true;
     base.features = "+neon,+fp-armv8".to_string();
 
-    // FIXME: this shouldn't be panic=abort, it should be panic=unwind
-    base.panic_strategy = PanicStrategy::Abort;
-
     Ok(Target {
         llvm_target: "aarch64-pc-windows-msvc".to_string(),
         target_endian: "little".to_string(),
diff --git a/src/librustc_target/spec/aarch64_uwp_windows_msvc.rs b/src/librustc_target/spec/aarch64_uwp_windows_msvc.rs
index a793860..6a8d148 100644
--- a/src/librustc_target/spec/aarch64_uwp_windows_msvc.rs
+++ b/src/librustc_target/spec/aarch64_uwp_windows_msvc.rs
@@ -1,13 +1,10 @@
-use crate::spec::{LinkerFlavor, PanicStrategy, Target, TargetResult};
+use crate::spec::{LinkerFlavor, Target, TargetResult};
 
 pub fn target() -> TargetResult {
     let mut base = super::windows_uwp_msvc_base::opts();
     base.max_atomic_width = Some(64);
     base.has_elf_tls = true;
 
-    // FIXME: this shouldn't be panic=abort, it should be panic=unwind
-    base.panic_strategy = PanicStrategy::Abort;
-
     Ok(Target {
         llvm_target: "aarch64-pc-windows-msvc".to_string(),
         target_endian: "little".to_string(),
diff --git a/src/llvm-project b/src/llvm-project
index 130721d..027e428 160000
--- a/src/llvm-project
+++ b/src/llvm-project
@@ -1 +1 @@
-Subproject commit 130721d6f4e6cba3b910ccdf5e0aa62b9dffc95f
+Subproject commit 027e428197f3702599cfbb632883768175f49173