[gcc r11-10774] libstdc++: Add always_inline attribute to std::byte operators

[Jonathan Wakely]

https://gcc.gnu.org/g:29cc830367656d7d3582dd2164a8db9ad66f9187

commit r11-10774-g29cc830367656d7d3582dd2164a8db9ad66f9187
Author: Jonathan Wakely <jwakely@redhat.com>
Date:   Thu Sep 8 13:46:02 2022 +0100

    libstdc++: Add always_inline attribute to std::byte operators
    
    libstdc++-v3/ChangeLog:
    
            * include/c_global/cstddef (byte): Add always_inline attribute
            to all operator overloads.
            (to_integer): Add always_inline attribute.
    
    (cherry picked from commit 4977507e329ee3ed410fc7338b9aaada81b68361)

Diff:
---
 libstdc++-v3/include/c_global/cstddef | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/libstdc++-v3/include/c_global/cstddef b/libstdc++-v3/include/c_global/cstddef
index 13ef7f03c12..58bbdf66be9 100644
--- a/libstdc++-v3/include/c_global/cstddef
+++ b/libstdc++-v3/include/c_global/cstddef
@@ -121,55 +121,66 @@ _GLIBCXX_BEGIN_NAMESPACE_VERSION
     using __byte_op_t = typename __byte_operand<_IntegerType>::__type;
 
   template<typename _IntegerType>
+    [[__gnu__::__always_inline__]]
     constexpr __byte_op_t<_IntegerType>
     operator<<(byte __b, _IntegerType __shift) noexcept
     { return (byte)(unsigned char)((unsigned)__b << __shift); }
 
   template<typename _IntegerType>
+    [[__gnu__::__always_inline__]]
     constexpr __byte_op_t<_IntegerType>
     operator>>(byte __b, _IntegerType __shift) noexcept
     { return (byte)(unsigned char)((unsigned)__b >> __shift); }
 
+  [[__gnu__::__always_inline__]]
   constexpr byte
   operator|(byte __l, byte __r) noexcept
   { return (byte)(unsigned char)((unsigned)__l | (unsigned)__r); }
 
+  [[__gnu__::__always_inline__]]
   constexpr byte
   operator&(byte __l, byte __r) noexcept
   { return (byte)(unsigned char)((unsigned)__l & (unsigned)__r); }
 
+  [[__gnu__::__always_inline__]]
   constexpr byte
   operator^(byte __l, byte __r) noexcept
   { return (byte)(unsigned char)((unsigned)__l ^ (unsigned)__r); }
 
+  [[__gnu__::__always_inline__]]
   constexpr byte
   operator~(byte __b) noexcept
   { return (byte)(unsigned char)~(unsigned)__b; }
 
   template<typename _IntegerType>
+    [[__gnu__::__always_inline__]]
     constexpr __byte_op_t<_IntegerType>&
     operator<<=(byte& __b, _IntegerType __shift) noexcept
     { return __b = __b << __shift; }
 
   template<typename _IntegerType>
+    [[__gnu__::__always_inline__]]
     constexpr __byte_op_t<_IntegerType>&
     operator>>=(byte& __b, _IntegerType __shift) noexcept
     { return __b = __b >> __shift; }
 
+  [[__gnu__::__always_inline__]]
   constexpr byte&
   operator|=(byte& __l, byte __r) noexcept
   { return __l = __l | __r; }
 
+  [[__gnu__::__always_inline__]]
   constexpr byte&
   operator&=(byte& __l, byte __r) noexcept
   { return __l = __l & __r; }
 
+  [[__gnu__::__always_inline__]]
   constexpr byte&
   operator^=(byte& __l, byte __r) noexcept
   { return __l = __l ^ __r; }
 
   template<typename _IntegerType>
-    [[nodiscard]]
+    [[nodiscard,__gnu__::__always_inline__]]
     constexpr _IntegerType
     to_integer(__byte_op_t<_IntegerType> __b) noexcept
     { return _IntegerType(__b); }