Use callsite annotation instead of outlined function

Co-authored-by: Shuhei Kadowaki <[email protected]>

Author: Seelengrab

base/hashing.jl

@@ -31,8 +31,7 @@ hash(x::Any) = hash(x, zero(UInt))
 hash(w::WeakRef, h::UInt) = hash(w.value, h)
 
 # Types can't be deleted, so marking as total allows the compiler to look up the hash
-@assume_effects :total _typehash(T::Type) = ccall(:jl_type_hash, UInt, (Any,), T)
-hash(T::Type, h::UInt) = hash_uint(3h - _typehash(T))
+hash(T::Type, h::UInt) = hash_uint(3h - @assume_effects :total ccall(:jl_type_hash, UInt, (Any,), T))
 
 ## hashing general objects ##