commit feff406782b1299a8ceda60253a0879053b39805
author Brian Smith <brian@briansmith.org> Sun Jul 17 11:22:39 2016 -1000
committer Adam Langley <agl@google.com> Mon Jul 18 16:07:09 2016 +0000
tree f42d7a47ab5179bfaccc2e416d0efdb76f545341
parent e470e66e14f7960994370eed3915762a444250b1

Switch one point addition to a point doubling in p256-x86_64.c.

Change-Id: I67d8e72ff6f7d0b5d2393555b236510c391f2e78
Reviewed-on: https://boringssl-review.googlesource.com/8830
Reviewed-by: Adam Langley <agl@google.com>

crypto/ec/p256-x86_64.c

diff --git a/crypto/ec/p256-x86_64.c b/crypto/ec/p256-x86_64.c
index 89a48c4..470f450 100644
--- a/crypto/ec/p256-x86_64.c
+++ b/crypto/ec/p256-x86_64.c
@@ -312,7 +312,7 @@
   ecp_nistz256_point_double(&row[10 - 1], &row[5 - 1]);
   ecp_nistz256_point_add(&row[15 - 1], &row[14 - 1], &row[1 - 1]);
   ecp_nistz256_point_add(&row[11 - 1], &row[10 - 1], &row[1 - 1]);
-  ecp_nistz256_point_add(&row[16 - 1], &row[15 - 1], &row[1 - 1]);
+  ecp_nistz256_point_double(&row[16 - 1], &row[8 - 1]);
 
   BN_ULONG tmp[P256_LIMBS];
   alignas(32) P256_POINT h;