SDCC Home News Platforms Download Support Who Snapshots Linux Windows Mac OS X Documentation Source Documentation SDCC Manual (html/pdf) Test Suite (html/pdf) CDB Format (html/pdf) Anatomy of a Compiler - A Retargetable ANSI-C Compiler SDCC at SourceForge SDCC File Releases SDCC Subversion Repository SDCC Wiki Links and More! SDCC Metrics by Ohloh

SDCC Manual 8.1.6 Algebraic Simplifications SDCC does numerous algebraic simplifications, the following is a small sub-set of these optimizations. i = j + 0;     /* changed to: */     i = j;   i /= 2;        /* changed to: */     i >>= 1;   i = j - j;     /* changed to: */     i = 0;   i = j / 1;     /* changed to: */     i = j; Note the subexpressions given above are generally introduced by macro expansions or as a result of copy/constant propagation.