From 0df30c12a72b5f5dee1ac0cde2d401d827c3baa2 Mon Sep 17 00:00:00 2001
From: Andrew Kane <andrew@ankane.org>
Date: Sun, 7 Apr 2024 10:54:28 -0700
Subject: [PATCH] Added section on halfvec performance [skip ci]

---
 README.md | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/README.md b/README.md
index d0609a8..684dd33 100644
--- a/README.md
+++ b/README.md
@@ -957,6 +957,16 @@ To compile for portability, use:
 make OPTFLAGS=""
 ```
 
+### Halfvec Performance
+
+For best performance, make sure Postgres was compiled with a compiler that supports the `_Float16` type (since the same compiler will be used for extensions).
+
+Compiler | x86-64 | aarch64
+--- | --- | ---
+GCC | 12+ | 7+
+Clang | 15+ | 6+
+Apple Clang | 14.3+ | 10+
+
 ## Installation Notes - Windows
 
 ### Missing Header