From c0662a033e53106465c75b44adfa6a14304ea1ac Mon Sep 17 00:00:00 2001
From: Alex Crichton <alex@alexcrichton.com>
Date: Wed, 2 Jan 2019 09:52:46 -0800
Subject: [PATCH] Update the stdsimd submodule

Add a new cmpxchg16b intrinsics for x86_64!
---
 src/libcore/lib.rs | 1 +
 src/stdsimd        | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/libcore/lib.rs b/src/libcore/lib.rs
index 5ea765d3585a2..19bf4ab15bfc4 100644
--- a/src/libcore/lib.rs
+++ b/src/libcore/lib.rs
@@ -110,6 +110,7 @@
 #![feature(aarch64_target_feature)]
 #![feature(wasm_target_feature)]
 #![feature(avx512_target_feature)]
+#![cfg_attr(not(stage0), feature(cmpxchg16b_target_feature))]
 #![feature(const_slice_len)]
 #![feature(const_str_as_bytes)]
 #![feature(const_str_len)]
diff --git a/src/stdsimd b/src/stdsimd
index 513e067908f3e..ddb30221d7985 160000
--- a/src/stdsimd
+++ b/src/stdsimd
@@ -1 +1 @@
-Subproject commit 513e067908f3e2eb8b31ad1c12b2e0a62817e557
+Subproject commit ddb30221d7985e813b4214d14c2a560ed6ee0991