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22Â¥2015-01-16 21:48:26
txcokokok
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ½ð±Ò: 26.8
- É¢½ð: 1578
- ºì»¨: 6
- Ìû×Ó: 163
- ÔÚÏß: 29.1Сʱ
- ³æºÅ: 2071953
- ×¢²á: 2012-10-19
- ÐÔ±ð: GG
- רҵ: ½ðÊô²ÄÁϵÄÁ¦Ñ§ÐÐΪ
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2Â¥2014-09-24 16:35:40
magicmonk
ÖÁ×ðľ³æ (ÖøÃûдÊÖ)
- Ó¦Öú: 172 (¸ßÖÐÉú)
- ½ð±Ò: 11451.3
- ºì»¨: 24
- Ìû×Ó: 1124
- ÔÚÏß: 3108.8Сʱ
- ³æºÅ: 1191315
- ×¢²á: 2011-01-17
- רҵ: ÀíÂۺͼÆË㻯ѧ

3Â¥2014-09-25 08:41:52
txcokokok
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ½ð±Ò: 26.8
- É¢½ð: 1578
- ºì»¨: 6
- Ìû×Ó: 163
- ÔÚÏß: 29.1Сʱ
- ³æºÅ: 2071953
- ×¢²á: 2012-10-19
- ÐÔ±ð: GG
- רҵ: ½ðÊô²ÄÁϵÄÁ¦Ñ§ÐÐΪ

4Â¥2014-09-25 13:49:19
afan0012
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 7 (Ó×¶ùÔ°)
- ½ð±Ò: 4328
- É¢½ð: 7
- ºì»¨: 6
- Ìû×Ó: 228
- ÔÚÏß: 65.2Сʱ
- ³æºÅ: 3028351
- ×¢²á: 2014-03-08
- ÐÔ±ð: GG
- רҵ: Äý¾Û̬ÎïÐÔI:½á¹¹¡¢Á¦Ñ§ºÍ
5Â¥2014-09-25 16:15:10
δ°¶ÍöÁé
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
ÔÝʱÀ뿪Сľ³æ
- 1STÇ¿Ìû: 2
- Ó¦Öú: 622 (²©Ê¿)
- ½ð±Ò: 6519.3
- É¢½ð: 1221
- ºì»¨: 111
- Ìû×Ó: 1345
- ÔÚÏß: 517.7Сʱ
- ³æºÅ: 1730773
- ×¢²á: 2012-04-01
- ÐÔ±ð: GG
- רҵ: ÀíÂۺͼÆË㻯ѧ
6Â¥2014-09-26 09:06:12
δ°¶ÍöÁé
Ìú¸Ëľ³æ (ÖøÃûдÊÖ)
ÔÝʱÀ뿪Сľ³æ
- 1STÇ¿Ìû: 2
- Ó¦Öú: 622 (²©Ê¿)
- ½ð±Ò: 6519.3
- É¢½ð: 1221
- ºì»¨: 111
- Ìû×Ó: 1345
- ÔÚÏß: 517.7Сʱ
- ³æºÅ: 1730773
- ×¢²á: 2012-04-01
- ÐÔ±ð: GG
- רҵ: ÀíÂۺͼÆË㻯ѧ
7Â¥2014-09-26 09:06:58
txcokokok
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ½ð±Ò: 26.8
- É¢½ð: 1578
- ºì»¨: 6
- Ìû×Ó: 163
- ÔÚÏß: 29.1Сʱ
- ³æºÅ: 2071953
- ×¢²á: 2012-10-19
- ÐÔ±ð: GG
- רҵ: ½ðÊô²ÄÁϵÄÁ¦Ñ§ÐÐΪ

8Â¥2014-09-26 10:14:57
txcokokok
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ½ð±Ò: 26.8
- É¢½ð: 1578
- ºì»¨: 6
- Ìû×Ó: 163
- ÔÚÏß: 29.1Сʱ
- ³æºÅ: 2071953
- ×¢²á: 2012-10-19
- ÐÔ±ð: GG
- רҵ: ½ðÊô²ÄÁϵÄÁ¦Ñ§ÐÐΪ

9Â¥2014-09-26 10:16:06
txcokokok
ľ³æ (СÓÐÃûÆø)
- Ó¦Öú: 1 (Ó×¶ùÔ°)
- ½ð±Ò: 26.8
- É¢½ð: 1578
- ºì»¨: 6
- Ìû×Ó: 163
- ÔÚÏß: 29.1Сʱ
- ³æºÅ: 2071953
- ×¢²á: 2012-10-19
- ÐÔ±ð: GG
- רҵ: ½ðÊô²ÄÁϵÄÁ¦Ñ§ÐÐΪ
|
ÔÚÕâÀï¿´µ½µÄ£ºhttp://muchong.com/html/201204/4365939.html ¹ØÓÚFFLAGSÉèÖÃÓÅ»¯¼¶±ðµÄ¡£ Set the optimization level. If −O is not specified, then the default level is 1 if −g is not specified,and 0 if −g is specified. If a number is not supplied with −O then the optimization levelisset to 2.The optimization levels and their meanings are as follows: É趨ÓÅ»¯µÈ¼¶¡£Èç¹û -O ûÓб»×¨ÃÅÉ趨£¬ ÄÇôÈç¹ûûÓÐÉ趨 -g £¬ÔòĬÈϵȼ¶Îª1£¬·´Ö®Îª0¡£Èç¹ûÄãÉ趨ÁËÒ»¸ö²»±» ¨CO Ö§³ÖµÄÊý×Ö£¬ÔòÓÅ»¯µÈ¼¶±»ÉèΪ2.ÓÅ»¯µÈ¼¶ÓëËûÃǵĺ¬ÒåÈçÏ£º 0 A basic block is generated for each C statement. No scheduling is done between statements. No global optimizations are performed. 0 ÿ¸öCÓï¾ä¶¼²úÉúÒ»¸ö»ù±¾Óï¾ä¿é¡£²»¶ÔÓï¾ä¿éµÄ˳ÐòÖØÐÂÅÅÁС£²»½øÐÐÈ«¾ÖÓÅ»¯¡£ 1 Scheduling within extended basic blocks is performed. Some register allocation is performed. No global optimizations are performed. 1 Ö´ÐÐÀ©Õ¹µÄ»ù±¾Óï¾ä¿éÄÚµÄÖØÅÅ¡£Ä³Ð©¼Ä´æÆ÷±»·ÖÅäÒÔʹÓᣲ»½øÐÐÈ«¾ÖÓÅ»¯¡£ 2 All level 1 optimizations are performed. In addition, traditional scalar optimizations such as induction recognition and loop invariant motion are performed by the global optimizer. Ö´ÐÐËùÓеÄ1¼¶ÓÅ»¯¡£´ËÍ⣬´«Í³µÄ¡°±êÁ¿ÓÅ»¯¡±£¬ÀýÈç¡°ÓÕ·¢Ê¶±ð¡±ºÍ¡°Ñ»·²»±ä¡±µÈͨ¹ýÈ«¾ÖÓÅ»¯ÊµÏÖ¡£ 3 All level 1 and 2 optimizations are performed. In addition, this level enables more aggressive code hoisting and scalar replacement optimizations that may or may not be profitable. Ö´ÐÐËùÓеÄ1¼¶ºÍ2¼¶ÓÅ»¯¡£´ËÍ⣬Õâ¸öµÈ¼¶ÔÊÐí¸ü¶àµÄ¡¢²»ÖªÊÇ·ñºÏÊʵĻý¼«µÄ´úÂëÓÅ»¯ºÍ±êÁ¿È¡´úÓÅ»¯±»Ö´ÐС£ 4 All level 1,2and 3 optimizations are performed. In addition, hoisting of guarded invariant floating point expressions is enabled. Ö´ÐÐËùÓеÄ1£¬2ºÍ3¼¶ÓÅ»¯¡£´ËÍ⣬Õâ¸öµÈ¼¶ÔÊÐí¶Ô¶Ô¸¡µãÊý±í´ïʽµÄÓÅ»¯¡£ |

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