From ddede9fb9b5bd3a7cce71775ac8ce7bd30fdf87a Mon Sep 17 00:00:00 2001
From: Ralf Jung <post@ralfj.de>
Date: Fri, 22 Jul 2022 09:39:23 -0400
Subject: [PATCH] make some Miri backtraces more pretty

---
 crates/core_simd/src/vector.rs | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/crates/core_simd/src/vector.rs b/crates/core_simd/src/vector.rs
index 8661be938d5..e8e8f6899d3 100644
--- a/crates/core_simd/src/vector.rs
+++ b/crates/core_simd/src/vector.rs
@@ -239,6 +239,7 @@ where
     ///
     /// [cast]: Simd::cast
     #[inline]
+    #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
     pub unsafe fn to_int_unchecked<I>(self) -> Simd<I, LANES>
     where
         T: core::convert::FloatToInt<I>,
@@ -349,6 +350,7 @@ where
     /// [undefined behavior]: https://doc.rust-lang.org/reference/behavior-considered-undefined.html
     #[must_use]
     #[inline]
+    #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
     pub unsafe fn gather_select_unchecked(
         slice: &[T],
         enable: Mask<isize, LANES>,
@@ -444,6 +446,7 @@ where
     /// ```
     /// [undefined behavior]: https://doc.rust-lang.org/reference/behavior-considered-undefined.html
     #[inline]
+    #[cfg_attr(miri, track_caller)] // even without panics, this helps for Miri backtraces
     pub unsafe fn scatter_select_unchecked(
         self,
         slice: &mut [T],