From 0b0e542ce62c7bea803ccffae86de5fe94d81ae9 Mon Sep 17 00:00:00 2001
From: Andrew Kane <andrew@ankane.org>
Date: Fri, 1 Sep 2023 18:42:37 -0700
Subject: [PATCH] Fixed auto-vectorization for vector_spherical_distance with
 MSVC

---
 src/vector.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/src/vector.c b/src/vector.c
index aae909a..d3ebedb 100644
--- a/src/vector.c
+++ b/src/vector.c
@@ -695,6 +695,8 @@ vector_spherical_distance(PG_FUNCTION_ARGS)
 {
 	Vector	   *a = PG_GETARG_VECTOR_P(0);
 	Vector	   *b = PG_GETARG_VECTOR_P(1);
+	float	   *ax = a->x;
+	float	   *bx = b->x;
 	float		dp = 0.0;
 	double		distance;
 
@@ -702,7 +704,7 @@ vector_spherical_distance(PG_FUNCTION_ARGS)
 
 	/* Auto-vectorized */
 	for (int i = 0; i < a->dim; i++)
-		dp += a->x[i] * b->x[i];
+		dp += ax[i] * bx[i];
 
 	distance = (double) dp;