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
imp77.exe 2008-10-12 00:24 221K implib.a 2008-10-12 00:25 130K link.exe 2008-10-12 00:25 108K decode.exe 2008-10-12 00:24 60K mydec.exe 2008-10-12 00:24 34K edit.exe 2008-10-12 00:24 31K sieve.exe 2008-10-12 00:24 31K d.exe 2008-10-12 00:24 19K decoder.imp 2008-10-12 00:24 18K decarm.imp 2008-10-12 00:25 16K savedecarm.imp 2008-10-12 00:24 12K cond2s.lis 2008-10-12 00:24 8.3K temp1.tmp 2008-10-12 00:25 5.7K sieve.lis 2008-10-12 00:24 5.4K mydecv0.imp 2008-10-12 00:24 4.9K ccond2s.lis 2008-10-12 00:24 4.7K dd.imp 2008-10-12 00:24 4.2K csieve.lis 2008-10-12 00:25 3.7K temp2.tmp 2008-10-12 00:25 3.5K zzz.txt 2008-10-12 00:24 3.1K cond2s.imp 2008-10-12 00:24 2.8K cond2s.c 2008-10-12 00:24 2.4K intmath.aof 2008-10-12 00:24 912 README 2008-10-12 00:24 795 mydec.dec 2008-10-12 00:24 768 d.dec 2008-10-12 00:24 704 encode.imp 2008-10-12 00:24 658 sieve.imp 2008-10-12 00:24 638 static.aof 2008-10-12 00:24 604 sieve.c 2008-10-12 00:24 562 dectags.imp 2008-10-12 00:25 381 cond2s.dec 2008-10-12 00:24 327 sieve.dec 2008-10-12 00:24 298 static.dec 2008-10-12 00:24 291 intmath.dec 2008-10-12 00:24 289 map.dec 2008-10-12 00:24 288 triglog.src 2008-10-12 00:24 261 realmath.src 2008-10-12 00:24 255 static.imp 2008-10-12 00:24 232 map.imp 2008-10-12 00:24 229 intmath.imp 2008-10-12 00:24 220 static.c 2008-10-12 00:24 115 z.txt 2008-10-12 00:24 78 d.imp 2008-10-12 00:24 48