3 tv now implements Minus, Abs.
4 iropt now optimizes these and Div, Mod, Quot, DivMod.
5 Still missing: Shrs, Rot.
6 tarval_shr somtimes performs shrs, depending on the compiler/system!!
7 If the ArmRoq implementation is faulty there might appear errors.
10 Changed ircons: If undefined values are used the Phi construction
11 inserts a constant with value tarval_bad.
14 Changed array bounds in type.h to ir_node*. This allows to
15 construct array bounds that are complex constant expressions
16 simpler. Further dynamic array bounds can be displayed.
17 Comment in ircons.c extended: undefined values in start_block.
20 ifdef'ed all uses of gmp in tv.c away. Optimizations for
21 mode_Z no more supported, as well as constants of that mode.
24 Dokumentation in ir_dump
25 Habe Routinen fuer einzelne Knoten/Kanten aus header entfernt:
26 Benutzen globale Variable die nicht oeffentlich zugaenglich ist.
29 We need an entity for the array elements for the Sel nodes. This
30 entity should be stored in the array type. Changed constructor
31 parameters: include array element type. Entity for elements is built
36 Faulty use of va_arg, became visible with new, stricter gcc 2.96.
39 Added list of member entites to union. unioned_types and delimiters
40 are superfluous now -- removed.
41 Rationale: we want to express selection of a union member as a Sel
42 node. for this we need to have entities. The entities contain the
43 unioned type and have as name the delimiters...
46 Changed Makefile/MakeTargets to install headers and libraries
50 Changed Makefile and Configure scripts to produce a proper tar file
51 for distribution (libfirm-VERSION.tar)
52 Use 'make distrib' instead of 'make dist'
55 Changed implementation of tr module. With this I also changed the
56 interface!! Type casts are unnecessary now, but some access funcions
60 ======================================================================
61 ==================== New version: 0.3.0 ==============================
62 ======================================================================
68 added creation of a tar archive for distribution
69 replaced ir/.dummy.in by ir/Makefile.in
72 Changed equivalent_node() and copy_preds() so that the end block
73 is not optimized away if it has no real predecessors. This fixes
74 the problem with the while examples.
75 Added while_example in Makefile
78 Fooled around with if_while_example: Why does cse make it abort?
79 Cse removes path to End node, Bad remains as pred of Endblock.
80 The block walker can't deal with this.
81 Made new example with only loop: while_example.
84 added auto documentation in Makefiles, configure, etc
85 example in ir/ir/ircons.c - much must be added
86 creation of documentation by 'make autodoc' in architecture directory
89 added lots of #ifdef HAVE_CONFIG_G #include "config.h" #endif
90 replaced some C++ style comments (//) by standard C comments /**/
93 - configure (with some features, see --help for more)
94 - make [depend | tags | install]
95 - make [run] in testprograms
97 - compilation on SunOS
99 - automatic call of autoconf if required
102 More colours in vcg output.
103 Fixed bug: cse found that start block equals it's
104 first successor as both have the Start block as predecessor.
105 This only happens for local_optimize_graph() as during construction
106 the Start block is not entered in the value table.
107 Changed implementation: irgmod: local_optimize_graph() did not
108 empty the hash table with the irnodes for cse. This might cause that
109 cse turns up with a node that seems better but was removed from the
110 graph in an earlier optimization phase.
111 Removed old #if 1 from ircons.c
112 Commented in call of optimization for Block nodes in irgopt.c, copy_preds():
113 Optimizes blocks that had bad predecessors.
118 Moved struct from irprog.h to irprog_t.h, same for irmode.h.
119 Added a module deb_info in debug.h. Adapted makefile. Added example
121 Removed use of debug.h in ident.c. Now debug.c|h can be moved to
123 Removed inabled code for dead node elimination in irgopt.h.
124 Renamed some missnamed access routines (_of_). Macros with old names
125 are in old_fctnames.h.
126 Edited makefiles to remove #* and *.flc.
129 Some minor bugfixes...
132 After compacting of in arrays in dead_node_elimination
133 merge blocks and remove Phis with one pred.
136 Freeing of obstack in dead_node_elimination commented in.
137 Compacting in arrays of Block and Phi nodes in dead_node_
142 added set/get_SymConst_type_or_id in irnode.h
143 added field offset to entity in entity.h
144 added field size to type_class in type.h
145 include "gmp.h" in tv.h with "" instead <>
148 Some changes to make the lib better portable
151 Initialize max_node_nr in irprog.
154 Now outputs warning if faulty type in irdump, dump_type_info.
155 Explicit string termination in irdump, vcg_open.
158 Added external to declaration of irp.
159 Added typedef before pns and pnc_number.
160 irmode.c, init_mode(): We need to memset all new modes as
161 tarval_vrfy reads fields before they are initialized: It
162 compares to min/max when tarvals for min/max are allocated!
165 Changed parameter of Methods in type.h and type.c from
166 class to clss. Class is a C++ keyword.
169 Changed some testprograms to accomodate Uebprakt.
172 Finished implementation of dump_all_types.
173 Added new testprogram inheritance_example.
176 Added seven access routines in type.[hc]:
177 get_class_n_member, get_class_n_subtype, get_class_n_supertype,
178 get_strct_n_member, add_strct_member, get_strct_member and set_strct_member.
179 Fixed the type_walk_2 for those seven routines.
182 Added irdump routine dump_all_types.
183 Did changes to irprog, type, typewalk to achieve this.
184 typewalk needs to walk along members, sub and supertypes, this
185 is still missing! irdump then needs to output these edges.
187 ======================================================================
188 ==================== New version: 0.2.5 ==============================
189 ======================================================================
192 Made new Version: 0.2.5
194 15.8.2000 Goetz until 3.9.00
195 Separated irnode.h and many others into two files: one public
197 Added funcionality to extract headers for lib.
200 type_dump also dumps irg->ent
201 if_example: corrected nr of locals
204 irgopt: Correct copy of self pointer in start block.
205 irgopt: Correct treatment of loops: pre function in walker
206 breaks all possible loops in Phi and Block nodes.
207 irr_loop_example: wrong Return statement
208 Now I fixed all but one error: in memory_example.
209 This error showed a conceptual problem, so I wrote
210 a slightly different algorithm. This now runs for
212 dead_node_example: cse is buggy!! merges start and the
216 looking at bug in dead_node_elimination.
218 irnode: all get_..._arr functions changed
219 ircons: new_r_Block: set matured flag.
220 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
221 adapted call_str_example to new concepts.
224 Implemented simpler Phi construction algorithm that constructs
225 correct code for three_cfpred_example in ircons. This algorithm
226 generates more Id nodes than the original algorithm and therefore
228 Also made some changes to optimizations of Not.
231 Fixed a bug, caused by the recursive use in type.h and entity.h.
232 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
233 Fixed a problem in if_while testprogram, so it now works.
236 Fixed bug in optimize(). Returned Null instead n if
237 get_optimize() == false.
240 Added some access routines in type.[hc]. Solved a recursive definition
241 of type_class struct, entity struct and type union.
244 Separated entity header into pure functional header and header
248 ... a bunch small changes not documented
251 Changed output of oo_prog_example: now uses the internal list
252 of all irgs. Had to implement some of the access routines for
253 that. Also fixed a bug in irdump. Main routines did not use
254 current_ir_graph properly.
257 Implemented some missing parts in irgopt.
258 Added field irg to entity. Only valid if entity is a method.
259 Had to resove a cyclic de[endency between irgraph.h and entity.h
261 Added fields sub and super to type_class for inheritance.
262 Added field main_irg to irprog.
265 Fixed some bugs in irgopt.c
266 Added some missing 'get_new_node' methods, so the new obstack contains
270 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
271 Solved some copy'n'paste problems. Deleted most debug-code!
272 Added comments to several files.
275 Fixed bug in _r_ constructors for all four Div operations.
276 Fixed bug in turn_into_tuple: didn't remember the block.
277 Tested transform_node.
280 Fixed some testprograms to new semantics of firm.
281 Added testprogram global_var_example.
282 Fixed a bug in irop: Size of Sel node was (entity *) instead of
283 sel_attr. Therefor array_heap_example aborted.
284 Also found a missing break in typewalk, case iro_Alloc.
285 Added a construct that unifies all things constructed by the lib
286 and needed to represent a program: irprog.ch
287 This contains a list of all types as well as a list of all ir graphs.
288 I added calls to initialization and constructors so that this is constructed
289 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
290 Removed strange block struct and constructor from ircons.c.
291 Moved routines for automatic Phi construction from irgmod to ircons.
292 Sorted functions in ircons to reflect the different interfaces.
293 Renamed dataseg to globals to be conformant with documentation.
294 Added conservation of current_ir_graph to irgopt.c.
295 Corrected bug in Makefiles: wrong path to directory ./inlude.
298 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
299 We should change the naming of the Block constructor.
300 Removed acces routines to attr. "closed" of Block.
301 Removed second implementation of new_ir_node from ircons and some comments
302 concerned with the now resolved cyclic dependency.
303 Fixed some bugs in irgopt so that the compilation goes through.
306 Changed the irnode attribut 'visit' into 'visited'.
307 Added some access functions, like get/set_irn_visit etc.
310 Renamed some access funtion in irgraph.*.
311 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
312 Added two attributes to the irgraph struct. The visited flags belongs
313 to a ir graph, not to a whole program.
316 A new optimization has been finished. The dead-node-elimination copies
317 the existing ir graph from one opstack to another. While walking the
318 graph, only the reachable nodes will be copied, so the "dead-nodes"
319 (unreachable in the controlflow) are removed.
322 Solved some problems in the 'copy_node' function. The in array was not
323 as easy as it seamed.
326 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
327 optimization, which is needed in the paramter list of 'irg_walk'.
330 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
331 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
335 Removed some files from the archive, after dependencies and usage are
337 - 'ir/common/strerror.c'
339 - 'ir/ident/xx_ident.h'
340 an empty file, only included by 'ident.c', but never used;
341 - 'ir/tv/label.c' and
343 contained a numeric counter;
344 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
345 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
346 In the old fiasco compiler, the label thing is used in the backend.
347 Search for 'babil' to see the usage.
348 Also removed the two attributes 'lab' and 'used' in the tarval struct.
351 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
352 afterwards some recursive includes, so libfirm works again.
355 Did a lot of changes, which I never commented until now (4.7.00).
357 * Added new result to Start node: Pointer to global data segment.
358 * Extended Semantics of SymConst node to represent information for the
360 * Added arithmeitc nodes (Shrs, Minus ...)
362 Rearranged the directory structure and adjusted the makefiles.
363 The directories contain:
364 ir: everything for the intermediate representation (better: src?)
365 /ir: the ir itself, and standard optimizations.
366 /tv: the target value module
367 /tr: the type and entity representation
368 /adt: abstract data types
369 /common: stuff needed by all other dirs
370 /debug: debugging Unterstuetzung
372 include: external files needen as includes
373 testprograms: examples to test the lib.
375 The makefiles generate files with extension .d that contain the dependencies
379 Added access routine to attribute link of irnode in irnode.ch.
380 Added get_negated_pnc to irnode.ch.
383 Added an iterator in iropt that calls the optimization for all nodes.
384 Copied optimize's code to optimize_in_place and removed deallocations.
385 Made set_irn_n in irnode.c public.
386 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
387 are allowded as cfgpredecessors to represent dead "incoming" control
389 Added call to optimize_in_place in mature_block. Is this useful?
392 Changed tests from comparing enums to comparing pointers. This is more
393 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
394 now get_irn_op == op_And
397 Compared equivalent_value to the one in the original fiasco.
398 Added a test in case iro_And.
399 Changed implementation of iro_Div. Added routines turn_into_tuple
400 and set_irn_op() in irgmod/irnode.
401 Changed implementation of irn_Minus (although commented out).
402 Now all features are ported or documented for this function.
405 Compared computed_value to the one in the original fiasco.
406 Added one further optimization in case iro_Proj.
407 Now all features are ported for this function.
410 Updated comments in ircons.h.
413 Changed possible attribute of SymConst from type_class to type.
414 SymConst size could be the size of a union, array, ...
417 Implemented two dumpers that dump type information and a graph with
421 Implemented a walker that walks over the type informatin that can
422 be reached from an ir node.
423 Added routine get_kind(firm_thing) in common.h, Added file common.c.
424 Added files typewalk.ch and routines to irdump.
425 Added visited flags and initialization to entity and all types.
426 Implemented some of the missing access routines in type.c, entity.c
429 Implemented constructor for ShrA.
431 Added routine that iterates the graph and verifies all nodes.
432 Added Phi_in stack to irgraph. This allows to build several
433 graphs at once with respect to the Phi building algorithm.
436 Implemented dumper for control flow graphs. Changed irr_* and dead_*
437 examples to dump cfg.
440 Implemeted explicit stack for the Phi node generation. See ircons.c.
443 added include string.h in xoprintf.c to get rid of warning:
444 implicit declaration of function `bcopy'
448 Added more cases to equivalent_node.
449 Portet gigo, identify, identify_remember.
450 The set/pset library can not handle several hash tables. At least,
451 compiling several procedures causes a segmentation fault during access
452 to the tables (oo_program_example). Need to work on this.
453 transform_node still needs to be ported.
454 some cases in equivalent_node are still missing.
456 To get it running I had to remove the call to optimize in the
457 new_Block constructor. It can only be called when the Block is
461 Introduced a walker that walks only over blocks. The asserts
462 might be too strict for general graphs, but so far it works.
463 For the walker I introduced an additional flag in the attribute
464 of Blocks, an a global block_visited variable (in irgraph.h).
465 Furhter I modularized dump_ir_node, implemented dump_ir_graph
466 with the existing walker, and added new routines to output a
468 Changed the examples to call the new dump routine.
471 Added auxiliary routines to ir_node:
472 skip_Proj, skip_Nop, is_Bad ...
473 Changed access routines to use get_irn_n instead of explicit array
474 accesses. Changed get_irn_n to call skip_Id, so that the access routines
475 never will return Id nodes.
478 Repaired Phi computation, changed new_r_Phi_in. Added test program to
479 test irregular controlflow.
482 Updated optimizations computed_value and equivalent_node to new
483 Syntax of FIRM nodes and to use access routines.
484 Added routine skip_Proj in irnode.
486 2.2.2000 Boris Boesler
487 Added files irgwalk.c and irgwalk.h. They include a simple function to
488 traverse an ir graph and execute pre and post functions to current node.
491 Added arrays with parameters and result types to the type informtion
492 of a procedure. This is needed for the code generation. Also added
493 the corresponding access routines.
494 Adapted the testprograms.
497 Found a bug / complication: the call order
498 get_value (makes Phi0, put's it into graph_arr)
499 set_value (overwrites Phi0 in graph_arr)
500 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
502 fails. Added test wether graph_arr is already set in phi_merge.
504 Added tons of comments to explain Phi generation -- the stack hack.
508 irdump now outputs the pnc_number for projs of Cmp nodes.
509 Added routine to access the pnc_string.
512 Added result "dataseg" to Start node, with all it's consequences.
513 We need this for the compiler lab to translate global variables.
514 Now they can be selected from the data segment, and the start
515 node supplies the pointer to this segment.
516 These changes are guarded by preprocessor variable UEBPRAKT in
518 Changed files: common.h, irgraph.ch, irnode.h
522 removed array_example, added array-heap_example and
523 array-stack_example and adapted makefile.
525 Entity now also allows type_method as owner. This is to model
526 the stack, Sel nodes that select a variable (array) from the
527 stack need an entity that describes what they select. This
528 entity gets the type of the enclosing procedure as owner.
531 Added future access routines in `irmode.[ch]' as comments,
532 that all attributes in the ir_mode struct can be user-defined.
533 Added access routines in `irgraph.[ch]', for all attributes.
536 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
537 Added `irvrfy.[ch]' to MAKEFILE
538 Added "inline" before access routines in `irnode.h', that no warnings
539 will appear furthermore.
540 Added three more access routines in `irmode.[ch]':
541 struct tarval *get_min_of_mode (ir_mode *mode);
542 struct tarval *get_max_of_mode (ir_mode *mode);
543 struct tarval *get_null_of_mode (ir_mode *mode);
546 Adaption of Alloc, Sel and Entity to new types:
547 Changed array_example to use type instead of type_class.
548 Changed entity to allow all types as owner instead of
549 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
550 Changed alloc to allow allocating variables of any type instead of
552 Adapted all testprograms to avoid warnings.
554 removed dtest ... from Makefile, replaced by test.
557 Added "run" to makefile, added array_example to makefile of testprograms.
558 Corrected testprogram array
559 Changed assert in irvrfy -- Conv.
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