From: Sven Eckelmann <sven@narfation.org>
To: b.a.t.m.a.n@lists.open-mesh.org
Cc: Sven Eckelmann <sven@narfation.org>
Subject: [B.A.T.M.A.N.] [PATCH 6/9] alfred: Enable Link-time optimization
Date: Tue, 7 May 2013 14:51:06 +0200 [thread overview]
Message-ID: <1367931069-7177-7-git-send-email-sven@narfation.org> (raw)
In-Reply-To: <1367931069-7177-1-git-send-email-sven@narfation.org>
Link-time optimization allows to move parts of the optimization from the single
source file to the global source view. This is done by emitting the GIMPLE
representation in each object file and analyzing it again during the link step.
This reduces the binary size by around 10% on mipsel (this includes parts which
were also removed by garbage collection).
Signed-off-by: Sven Eckelmann <sven@narfation.org>
---
alfred/Makefile | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/alfred/Makefile b/alfred/Makefile
index ab19325..2656d1c 100644
--- a/alfred/Makefile
+++ b/alfred/Makefile
@@ -44,8 +44,8 @@ endef
MAKE_ALFRED_FLAGS=\
CONFIG_ALFRED_VIS=$(if $(CONFIG_PACKAGE_ALFRED_VIS),y,n)
-TARGET_CFLAGS += -ffunction-sections -fdata-sections
-TARGET_LDFLAGS += -Wl,--gc-sections
+TARGET_CFLAGS += -ffunction-sections -fdata-sections -flto
+TARGET_LDFLAGS += -Wl,--gc-sections -fuse-linker-plugin
define Build/Compile
CFLAGS="$(TARGET_CPPFLAGS) $(TARGET_CFLAGS)" \
--
1.8.2.1
next prev parent reply other threads:[~2013-05-07 12:51 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-05-07 12:51 [B.A.T.M.A.N.] [PATCH 0/9] Adding size relevant build options Sven Eckelmann
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 1/9] alfred: Add CFLAGS to the linker step Sven Eckelmann
2013-05-14 9:41 ` Simon Wunderlich
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 2/9] batctl: " Sven Eckelmann
2013-05-08 5:04 ` Marek Lindner
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 3/9] batmand: " Sven Eckelmann
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 4/9] vis: " Sven Eckelmann
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 5/9] alfred: Use section garbage collection to reduce binary size Sven Eckelmann
2013-05-14 9:44 ` Simon Wunderlich
2013-05-07 12:51 ` Sven Eckelmann [this message]
2013-05-14 9:45 ` [B.A.T.M.A.N.] [PATCH 6/9] alfred: Enable Link-time optimization Simon Wunderlich
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 7/9] batman-adv-devel: Add missing TARGET_* flags to batctl compile Sven Eckelmann
2013-05-08 5:11 ` Marek Lindner
2013-05-08 7:24 ` Sven Eckelmann
2013-05-12 7:52 ` Marek Lindner
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 8/9] batman-adv-devel: Use section garbage collection to reduce binary size Sven Eckelmann
2013-05-12 8:20 ` Marek Lindner
2013-05-07 12:51 ` [B.A.T.M.A.N.] [PATCH 5/9] batman-adv-devel: Enable Link-time optimization Sven Eckelmann
2013-05-12 8:21 ` Marek Lindner
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1367931069-7177-7-git-send-email-sven@narfation.org \
--to=sven@narfation.org \
--cc=b.a.t.m.a.n@lists.open-mesh.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox