1) LIS.cond2s contains some suggestions about trivial improvements which would improve the quality of the code by a fair bit. 2) LIS.csieve is a disassembly of the sieve benchmark run through NORCROFTs C compiler - which does a dataflow analysis to see if it can keep variables in registers throughout a procedure. The code for the identical version of the sieve in Imp is in LIS.sieve - NORCROFT's code wins hands-down, although the Imp code could be improved by simple live/dead analysis at a local level, with delayed storing of variables and moving invariants out of short loops. 3) After observing the quality of the NorCroft C, I put the conditional-test file through it (after translating to C) - it produced almost exactly the code I generated by hand...
Name Last modified Size Description
link.exe 2008-10-12 00:25 108K temp2.tmp 2008-10-12 00:25 3.5K dectags.imp 2008-10-12 00:25 381 temp1.tmp 2008-10-12 00:25 5.7K decarm.imp 2008-10-12 00:25 16K csieve.lis 2008-10-12 00:25 3.7K implib.a 2008-10-12 00:25 130K realmath.src 2008-10-12 00:24 255 sieve.lis 2008-10-12 00:24 5.4K sieve.imp 2008-10-12 00:24 638 sieve.exe 2008-10-12 00:24 31K static.c 2008-10-12 00:24 115 sieve.dec 2008-10-12 00:24 298 static.imp 2008-10-12 00:24 232 static.dec 2008-10-12 00:24 291 static.aof 2008-10-12 00:24 604 decode.exe 2008-10-12 00:24 60K ccond2s.lis 2008-10-12 00:24 4.7K zzz.txt 2008-10-12 00:24 3.1K mydecv0.imp 2008-10-12 00:24 4.9K intmath.imp 2008-10-12 00:24 220 intmath.dec 2008-10-12 00:24 289 mydec.exe 2008-10-12 00:24 34K intmath.aof 2008-10-12 00:24 912 mydec.dec 2008-10-12 00:24 768 cond2s.c 2008-10-12 00:24 2.4K dd.imp 2008-10-12 00:24 4.2K cond2s.lis 2008-10-12 00:24 8.3K cond2s.imp 2008-10-12 00:24 2.8K cond2s.dec 2008-10-12 00:24 327 savedecarm.imp 2008-10-12 00:24 12K map.imp 2008-10-12 00:24 229 sieve.c 2008-10-12 00:24 562 map.dec 2008-10-12 00:24 288 decoder.imp 2008-10-12 00:24 18K README 2008-10-12 00:24 795 z.txt 2008-10-12 00:24 78 triglog.src 2008-10-12 00:24 261 d.imp 2008-10-12 00:24 48 d.exe 2008-10-12 00:24 19K d.dec 2008-10-12 00:24 704 imp77.exe 2008-10-12 00:24 221K encode.imp 2008-10-12 00:24 658 edit.exe 2008-10-12 00:24 31K