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GCC alwayszero function attribute

1,302 bytes added, 11:29, 25 November 2009
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== Project Details ==
=== Relevant blog posts:===
10: [http://ehren.wordpress.com/2009/11/0424/creating-a-gccreworking-optimizationmy-pluginanalysis/ Creating a GCC optimization pluginReworking my analysis]
9: [http://ehren.wordpress.com/2009/1011/2423/a-gcc-hack-my-0-1build-releaseissues/ A Firefox build issues with GCC Hack (My 04.1 Release)5]
8: [http://ehren.wordpress.com/2009/1011/2118/a-gimpleanalysis-calland-flagstype-mysterymadness/ A Gimple Call Flags MysteryAnalysis and type madness]
7: [http://ehren.wordpress.com/2009/1011/0717/addingi686-avs-newx86-function64-attribute-toissues/ i686 vs x86-gcc/ Adding a new function attribute to GCC64 issues]
6: [http://ehren.wordpress.com/2009/0911/3004/poppingcreating-mya-gimplesgcc-aoptimization-planplugin/ Popping My GIMPLES (Creating a plan)GCC optimization plugin]
5: [http://ehren.wordpress.com/2009/10/24/a-gcc-hack-my-0-1-release/ A GCC Hack (My 0.1 Release)] 4: [http://ehren.wordpress.com/2009/10/21/a-gimple-call-flags-mystery/ A Gimple Call Flags Mystery] 3: [http://ehren.wordpress.com/2009/10/07/adding-a-new-function-attribute-to-gcc/ Adding a new function attribute to GCC] 2: [http://ehren.wordpress.com/2009/09/30/popping-my-gimples-a-plan/ Popping My GIMPLES (a plan)] 1: [http://ehren.wordpress.com/2009/09/20/building-gcc-from-trunk/ Building GCC from trunk] === Breakdown of Releases === ==== 0.0 ====This involved getting acquainted with GCC as well as my initial plan (posts 1-2). ==== 0.1 ====A new attribute and a proof of concept optimization were hacked into GCC (posts 3-5). ==== 0.2 ====The optimization was developed as a separate compiled plugin (post 6). A number of refinements were made to the plugin. Post 7 contains a critical bug fix. Post 8 addresses a minor type safety issue. A Dehydra analysis was introduced in post 8 for identifying alwayszero functions. ==== ~0.2.5 ====A preliminary Treehydra analysis for alwayszero functions based on outparams.js was introduced in post 10. Post 9 details alternative steps required to run the plugin on mozilla-central.  Note: I'd be comfortable including the last two posts in either 0.2 or 0.3. If my 'release style', to be generous, for 0.2 is found lacking, they should perhaps count for 0.2.
== Possible Bug ==
1
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