[llvm] 5953233 - [ADT] Simplify IsSizeLessThanThreshold (NFC) (#160642)

[via llvm-commits]

Author: Kazu Hirata
Date: 2025-09-25T08:51:31-07:00
New Revision: 5953233edeb8af419b67116cefbeee8b15940cb9

URL: https://github.com/llvm/llvm-project/commit/5953233edeb8af419b67116cefbeee8b15940cb9
DIFF: https://github.com/llvm/llvm-project/commit/5953233edeb8af419b67116cefbeee8b15940cb9.diff

LOG: [ADT] Simplify IsSizeLessThanThreshold (NFC) (#160642)

IsSizeLessThanThreshold is used only in AdjustedParamTBase, just a few
lines below the declaration.  This patch simplifies
IsSizeLessThanThreshold by substituting U with T, stripping away the
template, and switching to "static constexpr bool.

Added: 
    

Modified: 
    llvm/include/llvm/ADT/FunctionExtras.h

Removed: 
    


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diff  --git a/llvm/include/llvm/ADT/FunctionExtras.h b/llvm/include/llvm/ADT/FunctionExtras.h
index 12a2dc36e1af0..2498cb7796f1f 100644
--- a/llvm/include/llvm/ADT/FunctionExtras.h
+++ b/llvm/include/llvm/ADT/FunctionExtras.h
@@ -90,13 +90,12 @@ template <typename ReturnT, typename... ParamTs> class UniqueFunctionBase {
   template <typename T> struct AdjustedParamTBase {
     static_assert(!std::is_reference<T>::value,
                   "references should be handled by template specialization");
-    template <typename U>
-    using IsSizeLessThanThresholdT =
-        std::bool_constant<sizeof(U) <= 2 * sizeof(void *)>;
+    static constexpr bool IsSizeLessThanThreshold =
+        sizeof(T) <= 2 * sizeof(void *);
     using type =
         std::conditional_t<std::is_trivially_copy_constructible<T>::value &&
                                std::is_trivially_move_constructible<T>::value &&
-                               IsSizeLessThanThresholdT<T>::value,
+                               IsSizeLessThanThreshold,
                            T, T &>;
   };