From e7b726da0896f344c42f905caea3fde52312ec1d Mon Sep 17 00:00:00 2001
From: Dhruba Borthakur <dhruba@fb.com>
Date: Tue, 5 Mar 2013 10:43:27 -0800
Subject: [PATCH] Downgrade optimization level from -O3 to -O2.

Summary:
When we use -O3, the gcc 4.7.1 compiler generates 'pinsrd' which is
not supported on machines with "vendor_id       : AuthenticAMD".

Previous release of rocksdb used -O2.
Optimization -O2 was introduced at
https://github.com/facebook/rocksdb/commit/772f75b3fbc5cfcf4d519114751efeae04411fa1

Test Plan: make check

Reviewers: chip, heyongqiang, sheki

Reviewed By: sheki

CC: leveldb

Differential Revision: https://reviews.facebook.net/D9093
---
 Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index fe995b927..214903cc0 100644
--- a/Makefile
+++ b/Makefile
@@ -10,7 +10,7 @@ INSTALL_PATH ?= $(CURDIR)
 # to switch between compilation modes.
 
 # OPT ?= -DNDEBUG     # (A) Production use (optimized mode)
-OPT += -O3 -fno-omit-frame-pointer -momit-leaf-frame-pointer
+OPT += -O2 -fno-omit-frame-pointer -momit-leaf-frame-pointer
 #-----------------------------------------------
 
 # detect what platform we're building on