1Copyright (c) 1980 Regents of the University of California. 2All rights reserved. The Berkeley software License Agreement 3specifies the terms and conditions for redistribution. 4 5 @(#)DEBUGS 5.1 (Berkeley) 06/07/85 6 7WHAT THE DEBUG FLAGS MEAN: 8 90) Dump core on fatal errors. Set by default when -d is given. 10 Also prints statistics on optimizations. 11 121) Show data structures after optimization but before intermediate 13 code generation. Also causes each optimizer data structure to 14 be printed as it is created (before optimization). 15 162) Show data structures prior to optimization. 17 183) Show data structures after loop optimization but before other 19 optimizations. 20 214) Show data structures after loop optimization and CSE but before 22 other optimizations. 23 246) Don't perform loop optimization. 25 267) Don't do copy propagation optimization. 27 288) Show data structures after fatal errors. 29 309) Show data structures after loop optimization, CSE and copy 31 propagation but before register optimization. 32 3310) Don't do register optimization. 34 3512) Print statistics on memory allocation (local version only). 36 3713) Don't do common subexpression elimination. 38 3914) Print history of stack temporary allocations (mkaltmpn()). 40