2 Changed equivalent_node() and copy_preds() so that the end block
3 is not optimized away if it has no real predecessors. This fixes
4 the problem with the while examples.
5 Added while_example in Makefile
8 Fooled around with if_while_example: Why does cse make it abort?
9 Cse removes path to End node, Bad remains as pred of Endblock.
10 The block walker can't deal with this.
11 Made new example with only loop: while_example.
14 added auto documentation in Makefiles, configure, etc
15 example in ir/ir/ircons.c - much must be added
16 creation of documentation by 'make autodoc' in architecture directory
19 added lots of #ifdef HAVE_CONFIG_G #include "config.h" #endif
20 replaced some C++ style comments (//) by standard C comments /**/
23 - configure (with some features, see --help for more)
24 - make [depend | tags | install]
25 - make [run] in testprograms
27 - compilation on SunOS
29 - automatic call of autoconf if required
32 More colours in vcg output.
33 Fixed bug: cse found that start block equals it's
34 first successor as both have the Start block as predecessor.
35 This only happens for local_optimize_graph() as during construction
36 the Start block is not entered in the value table.
37 Changed implementation: irgmod: local_optimize_graph() did not
38 empty the hash table with the irnodes for cse. This might cause that
39 cse turns up with a node that seems better but was removed from the
40 graph in an earlier optimization phase.
41 Removed old #if 1 from ircons.c
42 Commented in call of optimization for Block nodes in irgopt.c, copy_preds():
43 Optimizes blocks that had bad predecessors.
48 Moved struct from irprog.h to irprog_t.h, same for irmode.h.
49 Added a module deb_info in debug.h. Adapted makefile. Added example
51 Removed use of debug.h in ident.c. Now debug.c|h can be moved to
53 Removed inabled code for dead node elimination in irgopt.h.
54 Renamed some missnamed access routines (_of_). Macros with old names
55 are in old_fctnames.h.
56 Edited makefiles to remove #* and *.flc.
59 Some minor bugfixes...
62 After compacting of in arrays in dead_node_elimination
63 merge blocks and remove Phis with one pred.
66 Freeing of obstack in dead_node_elimination commented in.
67 Compacting in arrays of Block and Phi nodes in dead_node_
72 added set/get_SymConst_type_or_id in irnode.h
73 added field offset to entity in entity.h
74 added field size to type_class in type.h
75 include "gmp.h" in tv.h with "" instead <>
78 Some changes to make the lib better portable
81 Initialize max_node_nr in irprog.
84 Now outputs warning if faulty type in irdump, dump_type_info.
85 Explicit string termination in irdump, vcg_open.
88 Added external to declaration of irp.
89 Added typedef before pns and pnc_number.
90 irmode.c, init_mode(): We need to memset all new modes as
91 tarval_vrfy reads fields before they are initialized: It
92 compares to min/max when tarvals for min/max are allocated!
95 Changed parameter of Methods in type.h and type.c from
96 class to clss. Class is a C++ keyword.
99 Changed some testprograms to accomodate Uebprakt.
102 Finished implementation of dump_all_types.
103 Added new testprogram inheritance_example.
106 Added seven access routines in type.[hc]:
107 get_class_n_member, get_class_n_subtype, get_class_n_supertype,
108 get_strct_n_member, add_strct_member, get_strct_member and set_strct_member.
109 Fixed the type_walk_2 for those seven routines.
112 Added irdump routine dump_all_types.
113 Did changes to irprog, type, typewalk to achieve this.
114 typewalk needs to walk along members, sub and supertypes, this
115 is still missing! irdump then needs to output these edges.
117 ======================================================================
118 ==================== New version: 0.2.5 ==============================
119 ======================================================================
122 Made new Version: 0.2.5
124 15.8.2000 Goetz until 3.9.00
125 Separated irnode.h and many others into two files: one public
127 Added funcionality to extract headers for lib.
130 type_dump also dumps irg->ent
131 if_example: corrected nr of locals
134 irgopt: Correct copy of self pointer in start block.
135 irgopt: Correct treatment of loops: pre function in walker
136 breaks all possible loops in Phi and Block nodes.
137 irr_loop_example: wrong Return statement
138 Now I fixed all but one error: in memory_example.
139 This error showed a conceptual problem, so I wrote
140 a slightly different algorithm. This now runs for
142 dead_node_example: cse is buggy!! merges start and the
146 looking at bug in dead_node_elimination.
148 irnode: all get_..._arr functions changed
149 ircons: new_r_Block: set matured flag.
150 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
151 adapted call_str_example to new concepts.
154 Implemented simpler Phi construction algorithm that constructs
155 correct code for three_cfpred_example in ircons. This algorithm
156 generates more Id nodes than the original algorithm and therefore
158 Also made some changes to optimizations of Not.
161 Fixed a bug, caused by the recursive use in type.h and entity.h.
162 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
163 Fixed a problem in if_while testprogram, so it now works.
166 Fixed bug in optimize(). Returned Null instead n if
167 get_optimize() == false.
170 Added some access routines in type.[hc]. Solved a recursive definition
171 of type_class struct, entity struct and type union.
174 Separated entity header into pure functional header and header
178 ... a bunch small changes not documented
181 Changed output of oo_prog_example: now uses the internal list
182 of all irgs. Had to implement some of the access routines for
183 that. Also fixed a bug in irdump. Main routines did not use
184 current_ir_graph properly.
187 Implemented some missing parts in irgopt.
188 Added field irg to entity. Only valid if entity is a method.
189 Had to resove a cyclic de[endency between irgraph.h and entity.h
191 Added fields sub and super to type_class for inheritance.
192 Added field main_irg to irprog.
195 Fixed some bugs in irgopt.c
196 Added some missing 'get_new_node' methods, so the new obstack contains
200 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
201 Solved some copy'n'paste problems. Deleted most debug-code!
202 Added comments to several files.
205 Fixed bug in _r_ constructors for all four Div operations.
206 Fixed bug in turn_into_tuple: didn't remember the block.
207 Tested transform_node.
210 Fixed some testprograms to new semantics of firm.
211 Added testprogram global_var_example.
212 Fixed a bug in irop: Size of Sel node was (entity *) instead of
213 sel_attr. Therefor array_heap_example aborted.
214 Also found a missing break in typewalk, case iro_Alloc.
215 Added a construct that unifies all things constructed by the lib
216 and needed to represent a program: irprog.ch
217 This contains a list of all types as well as a list of all ir graphs.
218 I added calls to initialization and constructors so that this is constructed
219 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
220 Removed strange block struct and constructor from ircons.c.
221 Moved routines for automatic Phi construction from irgmod to ircons.
222 Sorted functions in ircons to reflect the different interfaces.
223 Renamed dataseg to globals to be conformant with documentation.
224 Added conservation of current_ir_graph to irgopt.c.
225 Corrected bug in Makefiles: wrong path to directory ./inlude.
228 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
229 We should change the naming of the Block constructor.
230 Removed acces routines to attr. "closed" of Block.
231 Removed second implementation of new_ir_node from ircons and some comments
232 concerned with the now resolved cyclic dependency.
233 Fixed some bugs in irgopt so that the compilation goes through.
236 Changed the irnode attribut 'visit' into 'visited'.
237 Added some access functions, like get/set_irn_visit etc.
240 Renamed some access funtion in irgraph.*.
241 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
242 Added two attributes to the irgraph struct. The visited flags belongs
243 to a ir graph, not to a whole program.
246 A new optimization has been finished. The dead-node-elimination copies
247 the existing ir graph from one opstack to another. While walking the
248 graph, only the reachable nodes will be copied, so the "dead-nodes"
249 (unreachable in the controlflow) are removed.
252 Solved some problems in the 'copy_node' function. The in array was not
253 as easy as it seamed.
256 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
257 optimization, which is needed in the paramter list of 'irg_walk'.
260 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
261 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
265 Removed some files from the archive, after dependencies and usage are
267 - 'ir/common/strerror.c'
269 - 'ir/ident/xx_ident.h'
270 an empty file, only included by 'ident.c', but never used;
271 - 'ir/tv/label.c' and
273 contained a numeric counter;
274 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
275 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
276 In the old fiasco compiler, the label thing is used in the backend.
277 Search for 'babil' to see the usage.
278 Also removed the two attributes 'lab' and 'used' in the tarval struct.
281 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
282 afterwards some recursive includes, so libfirm works again.
285 Did a lot of changes, which I never commented until now (4.7.00).
287 * Added new result to Start node: Pointer to global data segment.
288 * Extended Semantics of SymConst node to represent information for the
290 * Added arithmeitc nodes (Shrs, Minus ...)
292 Rearranged the directory structure and adjusted the makefiles.
293 The directories contain:
294 ir: everything for the intermediate representation (better: src?)
295 /ir: the ir itself, and standard optimizations.
296 /tv: the target value module
297 /tr: the type and entity representation
298 /adt: abstract data types
299 /common: stuff needed by all other dirs
300 /debug: debugging Unterstuetzung
302 include: external files needen as includes
303 testprograms: examples to test the lib.
305 The makefiles generate files with extension .d that contain the dependencies
309 Added access routine to attribute link of irnode in irnode.ch.
310 Added get_negated_pnc to irnode.ch.
313 Added an iterator in iropt that calls the optimization for all nodes.
314 Copied optimize's code to optimize_in_place and removed deallocations.
315 Made set_irn_n in irnode.c public.
316 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
317 are allowded as cfgpredecessors to represent dead "incoming" control
319 Added call to optimize_in_place in mature_block. Is this useful?
322 Changed tests from comparing enums to comparing pointers. This is more
323 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
324 now get_irn_op == op_And
327 Compared equivalent_value to the one in the original fiasco.
328 Added a test in case iro_And.
329 Changed implementation of iro_Div. Added routines turn_into_tuple
330 and set_irn_op() in irgmod/irnode.
331 Changed implementation of irn_Minus (although commented out).
332 Now all features are ported or documented for this function.
335 Compared computed_value to the one in the original fiasco.
336 Added one further optimization in case iro_Proj.
337 Now all features are ported for this function.
340 Updated comments in ircons.h.
343 Changed possible attribute of SymConst from type_class to type.
344 SymConst size could be the size of a union, array, ...
347 Implemented two dumpers that dump type information and a graph with
351 Implemented a walker that walks over the type informatin that can
352 be reached from an ir node.
353 Added routine get_kind(firm_thing) in common.h, Added file common.c.
354 Added files typewalk.ch and routines to irdump.
355 Added visited flags and initialization to entity and all types.
356 Implemented some of the missing access routines in type.c, entity.c
359 Implemented constructor for ShrA.
361 Added routine that iterates the graph and verifies all nodes.
362 Added Phi_in stack to irgraph. This allows to build several
363 graphs at once with respect to the Phi building algorithm.
366 Implemented dumper for control flow graphs. Changed irr_* and dead_*
367 examples to dump cfg.
370 Implemeted explicit stack for the Phi node generation. See ircons.c.
373 added include string.h in xoprintf.c to get rid of warning:
374 implicit declaration of function `bcopy'
378 Added more cases to equivalent_node.
379 Portet gigo, identify, identify_remember.
380 The set/pset library can not handle several hash tables. At least,
381 compiling several procedures causes a segmentation fault during access
382 to the tables (oo_program_example). Need to work on this.
383 transform_node still needs to be ported.
384 some cases in equivalent_node are still missing.
386 To get it running I had to remove the call to optimize in the
387 new_Block constructor. It can only be called when the Block is
391 Introduced a walker that walks only over blocks. The asserts
392 might be too strict for general graphs, but so far it works.
393 For the walker I introduced an additional flag in the attribute
394 of Blocks, an a global block_visited variable (in irgraph.h).
395 Furhter I modularized dump_ir_node, implemented dump_ir_graph
396 with the existing walker, and added new routines to output a
398 Changed the examples to call the new dump routine.
401 Added auxiliary routines to ir_node:
402 skip_Proj, skip_Nop, is_Bad ...
403 Changed access routines to use get_irn_n instead of explicit array
404 accesses. Changed get_irn_n to call skip_Id, so that the access routines
405 never will return Id nodes.
408 Repaired Phi computation, changed new_r_Phi_in. Added test program to
409 test irregular controlflow.
412 Updated optimizations computed_value and equivalent_node to new
413 Syntax of FIRM nodes and to use access routines.
414 Added routine skip_Proj in irnode.
416 2.2.2000 Boris Boesler
417 Added files irgwalk.c and irgwalk.h. They include a simple function to
418 traverse an ir graph and execute pre and post functions to current node.
421 Added arrays with parameters and result types to the type informtion
422 of a procedure. This is needed for the code generation. Also added
423 the corresponding access routines.
424 Adapted the testprograms.
427 Found a bug / complication: the call order
428 get_value (makes Phi0, put's it into graph_arr)
429 set_value (overwrites Phi0 in graph_arr)
430 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
432 fails. Added test wether graph_arr is already set in phi_merge.
434 Added tons of comments to explain Phi generation -- the stack hack.
438 irdump now outputs the pnc_number for projs of Cmp nodes.
439 Added routine to access the pnc_string.
442 Added result "dataseg" to Start node, with all it's consequences.
443 We need this for the compiler lab to translate global variables.
444 Now they can be selected from the data segment, and the start
445 node supplies the pointer to this segment.
446 These changes are guarded by preprocessor variable UEBPRAKT in
448 Changed files: common.h, irgraph.ch, irnode.h
452 removed array_example, added array-heap_example and
453 array-stack_example and adapted makefile.
455 Entity now also allows type_method as owner. This is to model
456 the stack, Sel nodes that select a variable (array) from the
457 stack need an entity that describes what they select. This
458 entity gets the type of the enclosing procedure as owner.
461 Added future access routines in `irmode.[ch]' as comments,
462 that all attributes in the ir_mode struct can be user-defined.
463 Added access routines in `irgraph.[ch]', for all attributes.
466 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
467 Added `irvrfy.[ch]' to MAKEFILE
468 Added "inline" before access routines in `irnode.h', that no warnings
469 will appear furthermore.
470 Added three more access routines in `irmode.[ch]':
471 struct tarval *get_min_of_mode (ir_mode *mode);
472 struct tarval *get_max_of_mode (ir_mode *mode);
473 struct tarval *get_null_of_mode (ir_mode *mode);
476 Adaption of Alloc, Sel and Entity to new types:
477 Changed array_example to use type instead of type_class.
478 Changed entity to allow all types as owner instead of
479 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
480 Changed alloc to allow allocating variables of any type instead of
482 Adapted all testprograms to avoid warnings.
484 removed dtest ... from Makefile, replaced by test.
487 Added "run" to makefile, added array_example to makefile of testprograms.
488 Corrected testprogram array
489 Changed assert in irvrfy -- Conv.
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