UkaiDiary

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日記?

2007/09/09 http://blogger.ukai.org/ に継続してみた。半年分は適当に補完。

2007/03/11

2007/03/11 19:20:00 JST

帰宅

2007/03/11 17:15:00 JST

NEXで hpljの元上司と出会う

2007/03/11 16:28:00 JST

成田

2007/03/10

2007/03/11 04:40:00 JST

搭乗

2007/03/11 04:20:00 JST

お土産をさがしていたら KMCの後輩とばったりであう

2007/03/11 03:25:00 JST

席が確定しないのでまたカウンターへこいといわれる

2007/03/11 01:50:00 JST

checkoutして SFOへ

2007/03/09

2007/03/10 15:35:00 JST

https://members.fsij.org/trac/soc2007/ を作成

2007/03/10 12:45:00 JST

fsij tracをいくつか復活

2007/03/08

2007/03/09 15:30:00 JST

hotelに戻り

2007/03/09 12:00:00 JST

Rokko で宴会

2007/03/07

2007/03/08 14:00:00 JST

hotelに戻り

2007/03/08 11:30:00 JST

sushitomi で宴会

2007/03/08 01:09:52 JST

/dev/hdb1            480719088 228262148 252432524  48% /archive
/dev/hdd1            480719056 472122904   8571736  99% /archive2

2007/03/06

2007/03/07 15:26:00 JST

む http://www.meti.go.jp/information/data/c70227aj.html

2007/03/05

2007/03/06 16:15:00 JST

む Mentoring Organization Applications Are Now Open!

2007/03/06 15:10:00 JST

Google cafeにある謎のKombchaの正体はこれか

2007/03/04

2007/03/05 13:50:00 JST

hotelに戻り

2007/03/05 11:00:00 JST

hariさん家へ。Janta Indian Cuisine

2007/03/02

2007/03/03 15:41:00 JST

む!> SCIMのJames SuはGoogleに転職したらしい。

2007/03/01

2007/03/02 09:00:00 JST

Japan Linux TechTalkのinvite mailがおかしかったぽい。

multipartの text/htmlはあんまりめだたないけど text/plainがだめだな。

gmailで text/plain側を簡単に見る方法ってあるのかな。

2007/02/28

2007/03/01 15:50:00 JST

wl で ascii armor encrypted messageよむときってどうすんだっけ

Buffer is read-only

C-c / でなんか Args out of range エラーが

lsdbとかがダメだったりするのかな

2007/03/01 09:30:00 JST

e-taxの opensource実装ってないのかな

2007/02/27

2007/02/28 12:00:00 JST

(Tayer UUCPの) Ian Lance Taylerによる GCC Talk http://google-code-updates.blogspot.com/2007/02/open-source-developers-google-speaker_23.html

12:09 GCC Current topics and future directions
12:10 GCC releases over time
12:11 GCC changes per year
12:11 4000-7000 changes/year recently
12:11 number of unique ChangeLog entries
12:11 RedHat, SuSE, Novell, IBM, ...
12:12 individual contributors
12:12 Dataflow
12:12 Internal dataflow framework being rewritten
12:12 Internal infrastructure improvement, should permit more optimizations and faster compiler
12:13 spearheaded by Ken Zadeck, supported by Daniel Berlin and Seongbae Park at Google
12:15 Alias warnings
12:15 improving warnings about invalid aliasing
12:15 warnings by Silvius Rus at Google
12:16 aliasing improvements by Danny Berlin at Google
12:21 overflow warnings
12:21 improving warnigns about signed overflow
12:21 implemented by Ian Lance Taylor at Google
12:22 for (bits = 1, i = 1; i > 0; i += 1) ++bits;
12:22 gcc 4.2 will turn this into an infinite loop
12:23 New option -fstrict-overflow, turned on at -O2
12:23 New option -Wstrict-overflow=N (N from 1 to 5)
12:26 Faster preprocessor
12:26 preprocessor and compiler proper were integrated in gcc 3.0
12:26 preprocessor is faster when compiling , slower when preprocessing
12:27 ccache and distcc separate the preproessing and compilation steps
12:27 preprocessor rewritten to be 30 percent faster
12:27 C++0x first steps
12:27 upcoming C++0x standard introduces several new language and library features
12:28 gcc 4.3 supports --std=c++0x and -Wc++0x-compat options
12:28 static_assert
12:28 No space required in std::vector<std::vector<int>>
12:28 variadic templates
12:32 whole program optimization
12:32 compile into intermediate representation as well as object code
12:33 at link time, optimize the whole program at once
12:33 inlining functions defined in different source files
12:33 optimize calling conventions when all callers are known
12:33 function cloning when some arguments are known
12:33 improved alias analysis
12:33 Not in 4.3, but first implementation may be in 4.4
12:36 GCC as JIT
12:36 Use GCC as a Just In Time compiler for virtual machines
12:37 Add CIL as a new backend for GCC
12:39 Q. profile based optimization
12:39 gcov
12:39 branch prediction
12:40 rearrange code for cache
12:40 constant size of memcpy -> inlining
12:42 Q. pre compiler headers?
12:43 Q. any plan of vectorization?