Hi, After building gcc, in build/gcc, we can find insn-codes.h which contains, enumeration 'insn_code' numbering of define_insn pattern by their name. for some patterns, it contains value 'CODE_FOR_nothing' and for some patterns it assigns an integer value. For example: #define CODE_FOR_extendhidi2 CODE_FOR_nothing #define CODE_FOR_extendqidi2 CODE_FOR_nothing CODE_FOR_extendhisi2 = 81, CODE_FOR_extendqihi2 = 82, CODE_FOR_extendqisi2 = 83, CODE_FOR_truncxfsf2_i387_noop = 96, CODE_FOR_truncxfdf2_i387_noop = 100, i686-linux-gnu is the target machine, for which my compiler was build. >From the enum like above , How can i figure out which are the instructions corresponding to 'i386' only.? [ as i386.md file was used for many other cpu-types also, like pentium, k6 etc., am i getting this confusion! ] TIA, -- Bhaskar
