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3é …æ¼”ç®—åã®gccæ‹¡å¼µ - Psychs's blog
http://tiki.is.os-omicron.org/tiki.cgi?c=v&p=gcc%A4%CE%B3%C8%C4%A5%B5%A1%C7%BD ä»Šæ—¥ã€gcc æ‹¡å¼µã§ 3é …æ¼”ç®—å x ? x : y ã®æœ€åˆã®è¿”å€¤ã‚’çœç•¥ã—ã¦ x ?: y ã¨æ›¸ã‘ã‚‹ã“ã¨ã‚’çŸ¥ã£ãŸã€‚ ã¤ã¾ã‚Šã€ruby ã§ v = x || y || z ã¨æ›¸ãã¨ã“ã‚ã‚’ã€C ã§ã‚‚ v = x ?: y ?: z; ã“ã‚“ãªæ„Ÿã˜ã«æ›¸ã‘ã‚‹ã‚ã‘ã ã€‚ã“ã‚Œã¯ã„ã„ã€‚ ã“ã®æ›¸ãæ–¹ã ã¨ã€x ã‚„ y ãŒä¸€åº¦ã—ã‹è©•ä¾¡ã•ã‚Œãªã„ã®ã§ã€ãƒžã‚¯ãƒã‚’æ›¸ãã¨ãã«ä¾¿åˆ©ã ã¨æ€ã†ã€‚ è¿½è¨˜ (2007.9.28) gcc ã§ã¯ã€|| ã‚’ä½¿ã†ã¨ 0 ã‹ 1 ã«ãªã‚‹ã®ã§ã€?: ã«åˆ©ç”¨ä¾¡å€¤ãŒã‚ã‚‹ã€‚ printf("%d", 2 || 4); // => 1 printf("%d", 2 ?: 4); // => 2
yheld 2007/11/02
gcc
ãƒªãƒ³ã‚¯
GCC 4.0.2 ã®ãƒã‚°ã€Linus ã®é‡Žæœ›ã‚’æš´ã | ã‚¹ãƒ©ãƒ‰ ãƒ‡ãƒ™ãƒãƒƒãƒ‘ãƒ¼
Linux ã‚«ãƒ¼ãƒãƒ«ãŒ Oops ã¨è¨€ã£ãŸã‚‰ã€ã¾ãšä½•ã‚’ç–‘ã†ã¹ãã ã‚ã†ã‹ã€‚ Ingo Molnar ãŒ procfs ã¾ã‚ã‚Šã§éé‡ã—ãŸå•é¡Œã¯ã€Linus Torvalds ã®è§£æžã«ã‚ˆã‚Š ã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã®ãƒã‚°ã§ã‚ã‚‹ã¨åˆ¤æ˜Žã—ãŸã€‚ Linus ã¯ã€åŽŸå› ã¨ãªã£ãŸ GCC 4.0.2 ã®æœ€é©åŒ–ãƒã‚°ã‚’ã€Œé•æ³•è¡Œç‚º (Illegal)ã€ã¨å‘¼ã³ã€ ã€Œãã‚“ãªã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã¯å½¹ç«‹ãŸãšã®ã‚´ãƒŸã ã€ã¨è¨€ã„åˆ‡ã£ã¦ã„ã‚‹ã€‚ Alan Cox ã«ã€Œã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã®æœ€é©åŒ–ã«é–¢ã™ã‚‹ç¦æ¢ä»¤ãªã‚“ã¦å˜åœ¨ã—ãªã„ã‚“ã ã‹ã‚‰ã€é•æ³•ã¨ã‹è¨€ã†ãªã‚ˆã€ã¨æŒ‡æ‘˜ã•ã‚ŒãŸå½¼ã¯ã€ ã€Œã‚ã‚ã€ä¿ºãŒä¸–ç•Œã®æ”¯é…è€…ã«ãªã‚‹ã¨ãé•æ³•ã«ãªã‚‹ã‚“ã ã£ãŸã€‚ã¡ã‚‡ã£ã¨å…ˆèµ°ã‚Šã—ã™ãŽãŸãã€ã¨è¿”ã—ã€ ã€Œæ”¯é…è€…ã«ãªã‚‹ã®ã¯ã€ã„ã¤é ƒï¼Ÿã€ã¨ã„ã†å•ã„ã«ã€Œé‹æ„å¥®é—˜ä¸ã€‚ãªã‹ãªã‹ç°¡å˜ã˜ã‚ƒãªã„ã‚“ã ãªã“ã‚ŒãŒã€ã¨ç”ãˆã¦ã„ã‚‹ã€‚
yheld 2007/10/11
slashdot

gcc

bugs
ãƒªãƒ³ã‚¯
Matzã«ã£ã(2007-09-17)
<< 2007/09/ 1 1. U20ãƒ—ãƒã‚³ãƒ³æœ€çµ‚å¯©æŸ»ä¼š 2. æ»ãªãªã„ãŸã‚ã« 3. [Ruby] davidflanagan.com: Nifty Ruby Unicode codepoints utility 2 1. [æ•™ä¼š] ç¬¬ä¸€æ—¥æ›œæ—¥ 3 1. [Ruby] Rubyã‚¢ã‚½ã‚·ã‚¨ãƒ¼ã‚·ãƒ§ãƒ³ãŒRubyè¨€èªžå…¬å¼ãƒã‚´ã®ãƒ‡ã‚¶ã‚¤ãƒ³å‹Ÿé›†ï¼šITpro 2. [OSS] Open Tech Press | GNU GPLv3 æ—¥æœ¬èªžè¨³ 3. [è¨€èªž] retlang - Google Code 4 1. Full Disclosure: World's most powerful supercomputer goes online (fwd) 2. [çŸ¥è²¡] å…ƒéº»å¸ƒæ˜¥ç”·ã®é€±åˆŠPCãƒ›ãƒƒãƒˆãƒ©ã‚¤ãƒ³ - DRMã©ã“ã‚ã‹EPNã‚‚å«Œã„ã 3. å–æ 5 1. å–æ 2. [Ruby] Ruby needs a
yheld 2007/09/28
license

compiler

gcc

pcc
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å€¤ã®å¤‰æ›´ãŒå‡ºæ¥ã‚‹æ–‡å—åˆ—ã«ã¤ã„ã¦ã®æ ¼é—˜æœŸã€‚ - ãƒœã‚¯ãƒŽã‚¹
ã¡ã‚‡ã£ã¨ã¯ã¾ã£ã¦èª¿ã¹ã¦ã¿ãŸã‚‰ã€ã‚‚ã£ã¨ã¯ã¾ã£ã¦ã—ã¾ã£ãŸãƒ»ãƒ»ãƒ»ã€‚å€¤ã®å¤‰æ›´ãŒå‡ºæ¥ã‚‹æ–‡å—åˆ—ã«ã¤ã„ã¦ã®æ ¼é—˜è¨˜ã€‚ å€¤ã®å¤‰æ›´ã«ã¤ã„ã¦ func(char *s) { *s = 'a' } func("moge"); ã¨ã„ã†ã‚¢ãƒ›ãªãƒ—ãƒã‚°ãƒ©ãƒ ã‚’æ›¸ã„ã¦ã—ã¾ã£ãŸãƒ»ãƒ»ãƒ»å€¤ãŒå¤‰æ›´ãŒå‡ºæ¥ã‚‹è¨³ãŒç„¡ã„!! ãªã‚“ã¨ãªãæ°—ã«ãªã£ãŸã®ã§ã€å€¤ã®å¤‰æ›´ã«ã¤ã„ã¦èª¿ã¹ã‚‹ã“ã¨ã«ã—ãŸã€‚ å€¤ã®å¤‰æ›´ã«ã¤ã„ã¦èª¿ã¹ã¦ã¿ãŸã€‚ strcpyã§å€¤ã‚’ã‚³ãƒ”ãƒ¼ã—ã¦ã¿ã‚‹ã€‚ #include <stdio.h> #include <stdlib.h> #include <string.h> int main(void) { char s1[] = "hoge"; const char s2[] = "piyo"; /* æ™®é€š */ strcpy(s1, "copy"); printf("%s\n", s1); /* è¦å‘Šã¯å‡ºã‚‹ã‘ã©å€¤ã®å¤‰æ›´ã¯ã§ãã‚‹ */ strcp
yheld 2007/08/15
tanakaBox

gcc
ãƒªãƒ³ã‚¯
K&Rã‚’èªã‚‚ã†(22) æ¼”ç¿’2-1 å¤‰æ•°ã®ç¯„å›² - ãƒœã‚¯ãƒŽã‚¹
æ¼”ç¿’2-1 å¤‰æ•°ã®ç¯„å›²ã‚’èª¿ã¹ã‚‹å•é¡Œã€‚ é¢å€’ãªã®ã§ãƒžã‚¯ãƒã§è‡ªå‹•ç”Ÿæˆã—ã¦ã¿ãŸã€‚ #include <stdio.h> #include <stdlib.h> #include <limits.h> #include <float.h> #define UCHAR_MIN 0 #define USHRT_MIN 0 #define UINT_MIN 0 #define size(s, t, S) printf("%-15s : %2d byte %2d bit %16" #t "%16" #t "\n", \ #s, sizeof (s), sizeof (s) * 8, S ## _MIN, S ## _MAX) int main(void) { size(unsigned char, d, UCHAR); size(char, d, CHAR); size(unsigned short, d
yheld 2007/08/05
tanakaBox

c

gcc
ãƒªãƒ³ã‚¯
Cè¨€èªžã«ã‚‚boolãŒã‚ã£ãŸã€‚ - ãƒœã‚¯ãƒŽã‚¹
æœ€è¿‘cflowã®ä¾¿åˆ©ã•ã«æ°—ã¥ã„ãŸtanakaã§ã™ã€‚ % cflow cat.c | grep ':$' | sed 's/<.*//' main() usage() simple_cat() cat() write_pending() next_line_num()ã‚³ãƒ¼ãƒ«ã‚°ãƒ©ãƒ•ãŒä¸€ç›®çžç„¶ã§ã£ã™ã€‚è¶…ä¾¿åˆ©ã€‚ ä¾¿åˆ©éŽãŽãªã®ã§é–¢æ•°ã®ã¿æŠ½å‡ºã™ã‚‹ã‚·ã‚§ãƒ«ã‚¹ã‚¯ãƒªãƒ—ãƒˆä½œã£ãŸã€‚ fflow() { cflow $@ | grep ':$' | sed 's/ <.*//' } ã‚„ã°ã„ã€‚æ»ãã‚‹ã€‚ boolã£ã¦ä½•ã‚ˆï¼Ÿ ã§ã€cflowã®ãƒ†ã‚¹ãƒˆã«GNU catã®ã‚½ãƒ¼ã‚¹ã‚’ä½¿ã£ã¦ã¿ãŸã‚‰ã€æ€ã‚ã¬æ‹¾ã„ç‰©ã€‚ bool ok = true; boolã«trueã€‚ãªã‚“ã ã‚³ãƒ¬? ãƒžã‚¯ãƒã®æ£ä½“ã¯ã€ #include <stdbool.h> èª¿ã¹ã¦ã¿ãŸã‚‰ã€æ¨™æº–Cãƒ©ã‚¤ãƒ–ãƒ©ãƒªã®å®Ÿè£… stdbool.hã‚ã£ãŸã€‚ã©ã†ã‚„ã‚‰C99ã‹ã‚‰ã®æ–°æ©Ÿèƒ½ã‚‰ã—ã„
yheld 2007/08/05
ã†ã£ã¯ï½—ï½—ï½—ã™ã£ã’ã‡ä¾¿åˆ©ï½—

tanakaBox

c

gcc

software
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[compiler] an introduction to gcc - goingerçš„æ—¥è¨˜
ã“ã®æœ¬ãŒãªã‹ãªã‹é¢ç™½ã‹ã£ãŸã®ã§ã€7å‰²ãã‚‰ã„èªã‚“ã§ã—ã¾ã£ãŸã€‚ gccã‚³ãƒ³ãƒ‘ã‚¤ãƒ©ã¯ã‚ˆãä½¿ç”¨ã™ã‚‹æ©Ÿä¼šãŒã‚ã‚‹ã‘ã‚Œã©ã‚‚ã€ã‚ã¾ã‚ŠçŸ¥ã‚‰ãªã„æ©Ÿèƒ½ãŒå¤šã„ã“ã¨ã«æ°—ãŒã¤ãã¾ã—ãŸã€‚ ã“ã®æœ¬ã®ä¸ã§ã‚‚ã€11ç« ã®An overview of the compilation processã€€ã¯çµæ§‹é¢ç™½ã„ã§ã™ã€‚æ™®æ®µã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã§çœç•¥ã—ã¦ã„ã‚‹éƒ¨åˆ†ã‚’ã‚ãˆã¦çœç•¥ã›ãšã«ã€å†—é•·ã«å®Ÿè¡Œã™ã‚‹ã“ã¨ã§ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã®æµã‚Œã‚’çŸ¥ã‚‹ã“ã¨ãŒå‡ºæ¥ã¾ã™ã€‚ã¨ã„ã†ã‚ã‘ã§ãã®å†…å®¹ã«ã¤ã„ã¦å°‘ã—ç´¹ä»‹ã—ã¦ã¿ã¾ã™ã€‚ ã“ã®æœ¬ã«ã‚ˆã‚‹ã¨ã€ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã®æµã‚Œã¯ä»¥ä¸‹ã®ã‚ˆã†ã«ãªã‚‹ã¨ã„ã†ã“ã¨ãŒæ›¸ã‹ã‚Œã¦ã„ã¾ã™ã€‚ preprocessing (to expand mac ros) compilation (from source code to assem bly language) assem bly (from assem bly language to machine code) linkin
yheld 2007/07/28
linkeréƒ¨åˆ†ãŒå‚è€ƒã«ãªã‚Šã¾ã—ãŸ

replore

gcc
ãƒªãƒ³ã‚¯
D ã‹ã‚‰ Xlib ã‚’ã»ã’ã»ã’ã—ãŸã‹ã£ãŸ - hogelogã®æ—¥è¨˜
ã‚¦ã‚£ãƒ³ãƒ‰ã‚¦ãƒžãƒãƒ¼ã‚¸ãƒ£ãƒ¼éŠã³ã‚’ã—ãŸã‹ã£ãŸã®ã§ã€C ã® .h ãƒ•ã‚¡ã‚¤ãƒ«ã‹ã‚‰ D ã®ãƒ¢ã‚¸ãƒ¥ãƒ¼ãƒ«ã¸ã®å¤‰æ› - ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°è¨€èªž D (æ—¥æœ¬èªžè¨³)ã‚’å‚è€ƒã«ã—ãªãŒã‚‰ Xlib.h ã‚’ Xlib.d ã¨ã‹ã«æ›¸ãã‹ãˆã‚ˆã†ã¨è©¦ã¿ã¦æ˜¨æ—¥ã‚’ã¤ã¶ã—ãŸã€‚ã—ã‹ã‚‚å…¨ç„¶ã†ã¾ãã„ã‹ã‚“ã‹ã£ãŸã€‚ã¤ãƒ¼ã‹ X11 ãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚’ã—ãŸã“ã¨ã‚‚ç„¡ã‘ã‚Œã°ã€Dè¨€èªžãƒ—ãƒã‚°ãƒ©ãƒŸãƒ³ã‚°ã‚‚ã—ãŸã“ã¨ç„¡ã„èº«ã§å¤šå°‘ç„¡è¬€ã ã£ãŸã‹ã‚‚ã‚ã‹ã‚‰ã‚“ã€‚ Xlib.h ã®ãƒ—ãƒªãƒ—ãƒã‚»ã‚¹ã‚‚ã€gcc ã‚ˆãçŸ¥ã‚‰ã‚“ã‹ã‚‰é©å½“ã«ã—ãŸã—ã€‚ % gcc -E /usr/X11R6/include/X11/Xlib.h >Xlib.h % gcc -E -dM /usr/X11R6/include/X11/Xlib.h >Xlib_macro.hã¨ã‹ã€‚ã‚ã¡ã‚ƒãã¡ã‚ƒã‚ã‹ã‚Šã«ãã„å‡ºåŠ›ã«ãªã£ãŸã€‚ã©ã†ã‚‚ % gcc -E -P -dD /usr/X11R6/include/X11/Xlib.hã®
yheld 2007/07/26
Dè¨€èªž

X11

gcc
ãƒªãƒ³ã‚¯
ã€ã‚¤ãƒ³ãƒ•ã‚©ã‚·ãƒ¼ã‚¯ã€‘Infoseek ï¼š æ¥½å¤©ãŒé‹å–¶ã™ã‚‹ãƒãƒ¼ã‚¿ãƒ«ã‚µã‚¤ãƒˆ
æ—¥é ƒã‚ˆã‚Šæ¥½å¤©ã®ã‚µãƒ¼ãƒ“ã‚¹ã‚’ã”åˆ©ç”¨ã„ãŸã ãã¾ã—ã¦ã‚ã‚ŠãŒã¨ã†ã”ã–ã„ã¾ã™ã€‚ ã‚µãƒ¼ãƒ“ã‚¹ã‚’ã”åˆ©ç”¨ã„ãŸã ã„ã¦ãŠã‚Šã¾ã™ã¨ã“ã‚å¤§å¤‰ç”³ã—è¨³ã”ã–ã„ã¾ã›ã‚“ãŒã€ç¾åœ¨ã€ç·Šæ€¥ãƒ¡ãƒ³ãƒ†ãƒŠãƒ³ã‚¹ã‚’è¡Œã‚ã›ã¦ã„ãŸã ã„ã¦ãŠã‚Šã¾ã™ã€‚ ãŠå®¢æ§˜ã«ã¯ã€ç·Šæ€¥ã®ãƒ¡ãƒ³ãƒ†ãƒŠãƒ³ã‚¹ã«ã‚ˆã‚Šã€ã”è¿·æƒ‘ã‚’ãŠã‹ã‘ã—ã¦ãŠã‚Šã€èª ã«ç”³ã—è¨³ã”ã–ã„ã¾ã›ã‚“ã€‚ ãƒ¡ãƒ³ãƒ†ãƒŠãƒ³ã‚¹ãŒçµ‚äº†æ¬¡ç¬¬ã€ã‚µãƒ¼ãƒ“ã‚¹ã‚’å¾©æ—§ã„ãŸã—ã¾ã™ã®ã§ã€ ä»Šã—ã°ã‚‰ããŠå¾…ã¡ã„ãŸã ã‘ã¾ã™ã‚ˆã†ã€ãŠé¡˜ã„ç”³ã—ä¸Šã’ã¾ã™ã€‚
yheld 2007/07/18
gcc

optimization
ãƒªãƒ³ã‚¯
ãƒ•ãƒªãƒ¼ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢å¾¹åº•æ´»ç”¨è¬›åº§(21)
yheld 2007/07/18
gcc

optimization
ãƒªãƒ³ã‚¯
GCCã§æœ«å°¾å†å¸°ã®æœ€é©åŒ–ãƒ¡ãƒ¢ã€‚ - ãƒœã‚¯ãƒŽã‚¹
å¿˜ã‚Œãã†ãªã®ã§ãƒ¡ãƒ¢ãƒ¡ãƒ¢ã€‚ gccã§æœ«å°¾å†å¸°ã®æœ€é©åŒ–ã‚’ã—ãŸã„å ´åˆã¯ã€ % gcc -foptimize-sibling-callsæœ€é©åŒ–ã‚ªãƒ—ã‚·ãƒ§ãƒ³-O2ä»¥ä¸Šã§ã‚‚æœ‰åŠ¹åŒ–å‡ºæ¥ã‚‹ã€‚ % gcc -O2å®‰å¿ƒã—ã¦å†å¸°ãŒä½¿ãˆã‚‹ã‚ˆã†ã«ãªã‚Šãã†ã§ã™ã€‚ å‚è€ƒ ãƒ•ãƒªãƒ¼ã‚½ãƒ•ãƒˆã‚¦ã‚§ã‚¢å¾¹åº•æ´»ç”¨è¬›åº§(21) GCC 4.1.0 ã®æœ€é©åŒ–ãƒ¬ãƒ™ãƒ«(-Ox)ã«ã‚ˆã‚‹é•ã„
yheld 2007/07/18
tanakBox

gcc

performance

optimization
ãƒªãƒ³ã‚¯
æ–°è¨€èªž Xtalã‚’ä½œã‚‹æ—¥è¨˜ - gccã§ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã™ã‚‹ã¨ã€ç•°æ§˜ã«é…ã„
GCCã‚’å…¥ã‚Œæ›¿ãˆã¦ã€ä¾‹å¤–ãŒSjLjã§ã¯ãªãã€Dwarf2-EHã§å‡¦ç†ã•ã‚Œã‚‹ãƒ¢ãƒŽã‚’ä½¿ã£ãŸã¨ã“ã‚ã€VCã¨åŒã˜ã‚ˆã†ãªé€Ÿåº¦ãŒå‡ºã¾ã—ãŸã€‚ â†“ã“ã“ã‹ã‚‰è½ã¨ã—ã¾ã—ãŸã€‚MinGW GCC with Dwarf2-EH http://sourceforge.net/project/showfiles.php?group_id=2435&package_id=82725&release_id=392771 gccè‡ªä½“ã‚’ã‚³ãƒ³ãƒ‘ã‚¤ãƒ«ã™ã‚‹ã¨ãã€--disable-sjlj-exceptionsã‚’æŒ‡å®šã™ã‚Œã°åŒã˜ã®ãŒã§ãã‚‹ã‚“ã§ã™ã‹ãï¼Ÿ gccã¨ã‹ãœã‚“ãœã‚“ä½¿ã‚ãªã„ã‚“ã§ã€ã‚ã‚“ã¾ã‚Šã‚ˆãçŸ¥ã‚‰ãªã„ã‚“ã§ã™ãŒã€ SjLjã®ä¾‹å¤–ã¯ã€Œä¾‹å¤–ã®é€å‡ºã¯æ—©ã„ã‘ã©ã€try..catchã‚„ã€ãƒ‡ã‚¹ãƒˆãƒ©ã‚¯ã‚¿ã‚’æŒã¤ã‚ªãƒ–ã‚¸ã‚§ã‚¯ãƒˆã®ãƒ•ãƒ¬ãƒ¼ãƒ ã‚’é€šã‚‹ãŸã³ã«ã‚³ã‚¹ãƒˆãŒã‹ã‹ã‚‹ã€æ–¹å¼ Dwarf2-EHã¯ã€Œä¾‹å¤–ã®é€å‡ºã¯é…ã„ã‘ã©ã€try..catchãªã©ã§ã®ã‚³ã‚¹ãƒˆã¯0ã€
yheld 2007/07/06
gcc
ãƒªãƒ³ã‚¯
Matzã«ã£ã(2007-06-26) - Steve Yeggeã€Railsã‚’JavaScriptã«ç§»æ¤ã™ã‚‹
<< 2007/06/ 1 1. [Ruby] æ¥½å¤©æŠ€è¡“ç ”ç©¶æ‰€ãƒ•ã‚§ãƒãƒ¼å°±ä»»ã®å½±éŸ¿ 2. [çŸ¥è²¡] ç§çš„éŒ²éŸ³éŒ²ç”»å°å§”å“¡ä¼šã€CDå£²ä¸Šæ¸›ã¨ç§çš„è¤‡è£½ã®é–¢ä¿‚ã‚ãã‚Šè°è«–ã¯å¹³è¡Œç·š 3. [Ruby] å·oãƒ»-ãƒ»ï¼‰ï¼œ2nd life - Ruby ã§ debug ã™ã‚‹7ã¤ã®æ–¹æ³• 4. [Ruby] Rails vs Django: a non biased yet useless comparison 5. [OSS] Dave Gilbert's Weblog : The Badness of JFree 6. [OSS] Trust, But Verify - O'Reilly ONLamp Blog 7. [è¨€èªž] Scala Actors -- A Short Tutorial 8. [Ruby] taw's blog: Why RLisp will not support Ruby class
yheld 2007/07/03
matz

introduce

compiler

gcc

forth
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yheld 2007/06/17
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yheld 2007/05/23
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yheld 2007/05/21
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