Do not consider _Backend when comparing execution policies

miscco · miscco · commit 54955260641d · 2025-11-18T09:49:18.000+01:00
diff --git a/libcudacxx/include/cuda/std/__execution/policy.h b/libcudacxx/include/cuda/std/__execution/policy.h
@@ -45,15 +45,15 @@ struct __execution_policy_base
   [[nodiscard]] _CCCL_API friend constexpr bool
   operator==(const __execution_policy_base&, const __execution_policy_base<_OtherPolicy, _OtherBackend>&) noexcept
   {
-    return _Policy == _OtherPolicy && _Backend == _OtherBackend;
+    return _Policy == _OtherPolicy;
   }
 
 #if _CCCL_STD_VER <= 2017
   template <uint32_t _OtherPolicy, __execution_backend _OtherBackend>
   [[nodiscard]] _CCCL_API friend constexpr bool
   operator!=(const __execution_policy_base&, const __execution_policy_base<_OtherPolicy, _OtherBackend>&) noexcept
   {
-    return _Policy != _OtherPolicy || _Backend != _OtherBackend;
+    return _Policy != _OtherPolicy;
   }
 #endif // _CCCL_STD_VER <= 2017
 

Original file line number	Diff line number	Diff line change
`@@ -45,15 +45,15 @@ struct __execution_policy_base`
`45`	`45`	`[[nodiscard]] _CCCL_API friend constexpr bool`
`46`	`46`	`operator==(const __execution_policy_base&, const __execution_policy_base<_OtherPolicy, _OtherBackend>&) noexcept`
`47`	`47`	`{`
`48`		`- return _Policy == _OtherPolicy && _Backend == _OtherBackend;`
	`48`	`+ return _Policy == _OtherPolicy;`
`49`	`49`	`}`
`50`	`50`
`51`	`51`	`#if _CCCL_STD_VER <= 2017`
`52`	`52`	`template <uint32_t _OtherPolicy, __execution_backend _OtherBackend>`
`53`	`53`	`[[nodiscard]] _CCCL_API friend constexpr bool`
`54`	`54`	`operator!=(const __execution_policy_base&, const __execution_policy_base<_OtherPolicy, _OtherBackend>&) noexcept`
`55`	`55`	`{`
`56`		`- return _Policy != _OtherPolicy \|\| _Backend != _OtherBackend;`
	`56`	`+ return _Policy != _OtherPolicy;`
`57`	`57`	`}`
`58`	`58`	`#endif // _CCCL_STD_VER <= 2017`
`59`	`59`