[libcxx-commits] [libcxx] [libc++] <experimental/simd> Add compound assignment operators for simd reference (PR #86761)

[Nikolas Klauser via libcxx-commits]

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@@ -60,6 +63,24 @@ class __simd_reference {
     return {__s_, __idx_};
   }
 
+#  define _LIBCXX_SIMD_REFERENCE_OP_(__op)                                                                             \
+    template <class _Up, class = decltype(std::declval<value_type&>() __op## = std::declval<_Up>())>                   \
+        __simd_reference _LIBCPP_HIDE_FROM_ABI operator __op##=(_Up&& __v) && noexcept {                               \
+      __set(__get() __op static_cast<value_type>(std::forward<_Up>(__v)));                                             \
+      return {__s_, __idx_};                                                                                           \
+    }
+  _LIBCXX_SIMD_REFERENCE_OP_(+)
+  _LIBCXX_SIMD_REFERENCE_OP_(-)
+  _LIBCXX_SIMD_REFERENCE_OP_(*)
+  _LIBCXX_SIMD_REFERENCE_OP_(/)
+  _LIBCXX_SIMD_REFERENCE_OP_(%)
+  _LIBCXX_SIMD_REFERENCE_OP_(&)
+  _LIBCXX_SIMD_REFERENCE_OP_(|)
+  _LIBCXX_SIMD_REFERENCE_OP_(^)
+  _LIBCXX_SIMD_REFERENCE_OP_(<<)
+  _LIBCXX_SIMD_REFERENCE_OP_(>>)
+#  undef _LIBCXX_SIMD_REFERENCE_OP_
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philnik777 wrote:

I think we should just expand this. Macros result in notoriously bad error messages and here it really doesn't seem that bad to just expand the macros.

https://github.com/llvm/llvm-project/pull/86761