Improve clarity on compile-time optimizations

Clarify the optimization behavior of programs in C.

Author: MyNameIsTrez

_posts/2025-11-30-comptime-c-functions.md

@@ -9,7 +9,9 @@ Compile-time function execution is great, but what if you're:
 2. Don't want to use evil C macros.
 3. Want generic data structures that work for all types.
 
-The below programs are optimized away by both GCC and Clang, such that only the `printf()` at the end of `main()` is left.
+The below programs get optimized away at compile time, such that only the `printf()` at the end of `main()` is left, both with GCC and Clang.
+
+[LTO](https://en.wikipedia.org/wiki/Interprocedural_optimization) should in theory allow GCC and Clang to perform this optimization even when the code is split across several object files, but I haven't tested this.
 
 # Generic Stack