[libcxx-commits] [libcxx] [libc++][test][msan] Refine XFAIL after #67799 (PR #73213)

[Vitaly Buka via libcxx-commits]

https://github.com/vitalybuka created https://github.com/llvm/llvm-project/pull/73213

Undo a part of #73152.

These test do not hang, but unexpectedlty pass on aarch64
https://lab.llvm.org/buildbot/#/builders/74/builds/23708

Test work on aarch64 and probably any platform without fp80.


>From 3ba1e16b1f61248b359cf046a5d693603f4c9788 Mon Sep 17 00:00:00 2001
From: Vitaly Buka <vitalybuka at google.com>
Date: Wed, 22 Nov 2023 22:45:09 -0800
Subject: [PATCH] =?UTF-8?q?[=F0=9D=98=80=F0=9D=97=BD=F0=9D=97=BF]=20initia?=
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Created using spr 1.3.4
---
 .../atomics.types.float/exchange.pass.cpp                      | 3 +--
 .../atomics.types.generic/atomics.types.float/wait.pass.cpp    | 3 +--
 2 files changed, 2 insertions(+), 4 deletions(-)

diff --git a/libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/exchange.pass.cpp b/libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/exchange.pass.cpp
index 87ce7ab05d92e6c..a8306304280c545 100644
--- a/libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/exchange.pass.cpp
+++ b/libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/exchange.pass.cpp
@@ -9,8 +9,7 @@
 // UNSUPPORTED: target={{.+}}-windows-gnu
 // Clang's support for atomic operations on long double is broken. See https://github.com/llvm/llvm-project/issues/72893
 // XFAIL: tsan
-// Hangs with msan.
-// UNSUPPORTED: msan
+// XFAIL: target={{x86_64-.*}} && msan
 // ADDITIONAL_COMPILE_FLAGS(has-latomic): -latomic
 
 //  T exchange(T, memory_order = memory_order::seq_cst) volatile noexcept;
diff --git a/libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/wait.pass.cpp b/libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/wait.pass.cpp
index e3a8c576ef0167e..15f3613245a836e 100644
--- a/libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/wait.pass.cpp
+++ b/libcxx/test/std/atomics/atomics.types.generic/atomics.types.float/wait.pass.cpp
@@ -9,8 +9,7 @@
 // XFAIL: availability-synchronization_library-missing
 // Clang's support for atomic operations on long double is broken. See https://github.com/llvm/llvm-project/issues/72893
 // XFAIL: tsan
-// Hangs with msan.
-// UNSUPPORTED: msan
+// XFAIL: target={{x86_64-.*}} && msan
 // ADDITIONAL_COMPILE_FLAGS(has-latomic): -latomic
 
 // void wait(T old, memory_order order = memory_order::seq_cst) const volatile noexcept;