2 renamed get_type_nameid to get_type_ident
5 Bugfix: dead node elimination did not replace the hash table
9 Added routine remove_irp_irg.
10 Changed comment to free_ir_graph.
13 Added routine to free irgraphs.
16 Improved add routines to sub, supertype in type.c
19 Added implementation of overwrites stuff.
22 Implemented stuff to change the type graph. See
23 typegmod.h and tpop.h for basic documentation of the change.
24 There now exists a type of kind type_id. If this appears
25 externally this is a bug.
28 Added some new access routines to types.
29 List of overwritten fields for entities.
30 Removed a bug in irnode.
33 Added a routine to set the mangled entity name.
34 Added two routines to copy entites.
37 Entities now have two more flags, for visibility and allocation mode.
38 Types that have a layout have a flag indicating whether the layout is
42 We distinguish three kinds of Cond nodes. These can be distinguished
43 by the mode of the selector operand and an internal flag of type cond_kind.
44 First we distinguish binary Conds and switch Conds.
45 A binary Cond has as selector a boolean value. Proj(0) projects the control
46 flow for case "False", Proj(1) the control flow for "True". A binary Cond
47 is recognized by the boolean selector.
48 The switch Cond has as selector an unsigned integer. It produces as result
49 an n+1 Tuple (cf0, ... , cfn) of control flows.
50 We differ two flavours of this Cond. The first, the dense Cond, passes
51 control along output i if the selector value is i, 0 <= i <= n. If the
52 selector value is >n it passes control along output n.
53 The second Cond flavor differes in the treatment of cases not specified in
54 the source program. It magically knows about the existence of Proj nodes.
55 It only passes control along output i, 0 <= i <= n, if a node Proj(Cond, i)
56 exists. Else it passes control along output n (even if this Proj does not
57 exist.) This Cond we call "fragmentary". There is a special constructor
58 new_defaultProj that automatically sets the flavor.
59 The two switch flavors are distinguished by a flag of type cond_kind.
60 Default flavor is "dense"
64 tv now implements Minus, Abs.
65 iropt now optimizes these and Div, Mod, Quot, DivMod.
66 Still missing: Shrs, Rot.
67 tarval_shr somtimes performs shrs, depending on the compiler/system!!
68 If the ArmRoq implementation is faulty there might appear errors.
71 Changed ircons: If undefined values are used the Phi construction
72 inserts a constant with value tarval_bad.
75 Changed array bounds in type.h to ir_node*. This allows to
76 construct array bounds that are complex constant expressions
77 simpler. Further dynamic array bounds can be displayed.
78 Comment in ircons.c extended: undefined values in start_block.
81 ifdef'ed all uses of gmp in tv.c away. Optimizations for
82 mode_Z no more supported, as well as constants of that mode.
85 Dokumentation in ir_dump
86 Habe Routinen fuer einzelne Knoten/Kanten aus header entfernt:
87 Benutzen globale Variable die nicht oeffentlich zugaenglich ist.
90 We need an entity for the array elements for the Sel nodes. This
91 entity should be stored in the array type. Changed constructor
92 parameters: include array element type. Entity for elements is built
97 Faulty use of va_arg, became visible with new, stricter gcc 2.96.
100 Added list of member entites to union. unioned_types and delimiters
101 are superfluous now -- removed.
102 Rationale: we want to express selection of a union member as a Sel
103 node. for this we need to have entities. The entities contain the
104 unioned type and have as name the delimiters...
107 Changed Makefile/MakeTargets to install headers and libraries
111 Changed Makefile and Configure scripts to produce a proper tar file
112 for distribution (libfirm-VERSION.tar)
113 Use 'make distrib' instead of 'make dist'
116 Changed implementation of tr module. With this I also changed the
117 interface!! Type casts are unnecessary now, but some access funcions
121 ======================================================================
122 ==================== New version: 0.3.0 ==============================
123 ======================================================================
129 added creation of a tar archive for distribution
130 replaced ir/.dummy.in by ir/Makefile.in
133 Changed equivalent_node() and copy_preds() so that the end block
134 is not optimized away if it has no real predecessors. This fixes
135 the problem with the while examples.
136 Added while_example in Makefile
139 Fooled around with if_while_example: Why does cse make it abort?
140 Cse removes path to End node, Bad remains as pred of Endblock.
141 The block walker can't deal with this.
142 Made new example with only loop: while_example.
145 added auto documentation in Makefiles, configure, etc
146 example in ir/ir/ircons.c - much must be added
147 creation of documentation by 'make autodoc' in architecture directory
150 added lots of #ifdef HAVE_CONFIG_G #include "config.h" #endif
151 replaced some C++ style comments (//) by standard C comments /**/
154 - configure (with some features, see --help for more)
155 - make [depend | tags | install]
156 - make [run] in testprograms
158 - compilation on SunOS
160 - automatic call of autoconf if required
163 More colours in vcg output.
164 Fixed bug: cse found that start block equals it's
165 first successor as both have the Start block as predecessor.
166 This only happens for local_optimize_graph() as during construction
167 the Start block is not entered in the value table.
168 Changed implementation: irgmod: local_optimize_graph() did not
169 empty the hash table with the irnodes for cse. This might cause that
170 cse turns up with a node that seems better but was removed from the
171 graph in an earlier optimization phase.
172 Removed old #if 1 from ircons.c
173 Commented in call of optimization for Block nodes in irgopt.c, copy_preds():
174 Optimizes blocks that had bad predecessors.
179 Moved struct from irprog.h to irprog_t.h, same for irmode.h.
180 Added a module deb_info in debug.h. Adapted makefile. Added example
182 Removed use of debug.h in ident.c. Now debug.c|h can be moved to
184 Removed inabled code for dead node elimination in irgopt.h.
185 Renamed some missnamed access routines (_of_). Macros with old names
186 are in old_fctnames.h.
187 Edited makefiles to remove #* and *.flc.
190 Some minor bugfixes...
193 After compacting of in arrays in dead_node_elimination
194 merge blocks and remove Phis with one pred.
197 Freeing of obstack in dead_node_elimination commented in.
198 Compacting in arrays of Block and Phi nodes in dead_node_
203 added set/get_SymConst_type_or_id in irnode.h
204 added field offset to entity in entity.h
205 added field size to type_class in type.h
206 include "gmp.h" in tv.h with "" instead <>
209 Some changes to make the lib better portable
212 Initialize max_node_nr in irprog.
215 Now outputs warning if faulty type in irdump, dump_type_info.
216 Explicit string termination in irdump, vcg_open.
219 Added external to declaration of irp.
220 Added typedef before pns and pnc_number.
221 irmode.c, init_mode(): We need to memset all new modes as
222 tarval_vrfy reads fields before they are initialized: It
223 compares to min/max when tarvals for min/max are allocated!
226 Changed parameter of Methods in type.h and type.c from
227 class to clss. Class is a C++ keyword.
230 Changed some testprograms to accomodate Uebprakt.
233 Finished implementation of dump_all_types.
234 Added new testprogram inheritance_example.
237 Added seven access routines in type.[hc]:
238 get_class_n_member, get_class_n_subtype, get_class_n_supertype,
239 get_strct_n_member, add_strct_member, get_strct_member and set_strct_member.
240 Fixed the type_walk_2 for those seven routines.
243 Added irdump routine dump_all_types.
244 Did changes to irprog, type, typewalk to achieve this.
245 typewalk needs to walk along members, sub and supertypes, this
246 is still missing! irdump then needs to output these edges.
248 ======================================================================
249 ==================== New version: 0.2.5 ==============================
250 ======================================================================
253 Made new Version: 0.2.5
255 15.8.2000 Goetz until 3.9.00
256 Separated irnode.h and many others into two files: one public
258 Added funcionality to extract headers for lib.
261 type_dump also dumps irg->ent
262 if_example: corrected nr of locals
265 irgopt: Correct copy of self pointer in start block.
266 irgopt: Correct treatment of loops: pre function in walker
267 breaks all possible loops in Phi and Block nodes.
268 irr_loop_example: wrong Return statement
269 Now I fixed all but one error: in memory_example.
270 This error showed a conceptual problem, so I wrote
271 a slightly different algorithm. This now runs for
273 dead_node_example: cse is buggy!! merges start and the
277 looking at bug in dead_node_elimination.
279 irnode: all get_..._arr functions changed
280 ircons: new_r_Block: set matured flag.
281 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
282 adapted call_str_example to new concepts.
285 Implemented simpler Phi construction algorithm that constructs
286 correct code for three_cfpred_example in ircons. This algorithm
287 generates more Id nodes than the original algorithm and therefore
289 Also made some changes to optimizations of Not.
292 Fixed a bug, caused by the recursive use in type.h and entity.h.
293 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
294 Fixed a problem in if_while testprogram, so it now works.
297 Fixed bug in optimize(). Returned Null instead n if
298 get_optimize() == false.
301 Added some access routines in type.[hc]. Solved a recursive definition
302 of type_class struct, entity struct and type union.
305 Separated entity header into pure functional header and header
309 ... a bunch small changes not documented
312 Changed output of oo_prog_example: now uses the internal list
313 of all irgs. Had to implement some of the access routines for
314 that. Also fixed a bug in irdump. Main routines did not use
315 current_ir_graph properly.
318 Implemented some missing parts in irgopt.
319 Added field irg to entity. Only valid if entity is a method.
320 Had to resove a cyclic de[endency between irgraph.h and entity.h
322 Added fields sub and super to type_class for inheritance.
323 Added field main_irg to irprog.
326 Fixed some bugs in irgopt.c
327 Added some missing 'get_new_node' methods, so the new obstack contains
331 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
332 Solved some copy'n'paste problems. Deleted most debug-code!
333 Added comments to several files.
336 Fixed bug in _r_ constructors for all four Div operations.
337 Fixed bug in turn_into_tuple: didn't remember the block.
338 Tested transform_node.
341 Fixed some testprograms to new semantics of firm.
342 Added testprogram global_var_example.
343 Fixed a bug in irop: Size of Sel node was (entity *) instead of
344 sel_attr. Therefor array_heap_example aborted.
345 Also found a missing break in typewalk, case iro_Alloc.
346 Added a construct that unifies all things constructed by the lib
347 and needed to represent a program: irprog.ch
348 This contains a list of all types as well as a list of all ir graphs.
349 I added calls to initialization and constructors so that this is constructed
350 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
351 Removed strange block struct and constructor from ircons.c.
352 Moved routines for automatic Phi construction from irgmod to ircons.
353 Sorted functions in ircons to reflect the different interfaces.
354 Renamed dataseg to globals to be conformant with documentation.
355 Added conservation of current_ir_graph to irgopt.c.
356 Corrected bug in Makefiles: wrong path to directory ./inlude.
359 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
360 We should change the naming of the Block constructor.
361 Removed acces routines to attr. "closed" of Block.
362 Removed second implementation of new_ir_node from ircons and some comments
363 concerned with the now resolved cyclic dependency.
364 Fixed some bugs in irgopt so that the compilation goes through.
367 Changed the irnode attribut 'visit' into 'visited'.
368 Added some access functions, like get/set_irn_visit etc.
371 Renamed some access funtion in irgraph.*.
372 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
373 Added two attributes to the irgraph struct. The visited flags belongs
374 to a ir graph, not to a whole program.
377 A new optimization has been finished. The dead-node-elimination copies
378 the existing ir graph from one opstack to another. While walking the
379 graph, only the reachable nodes will be copied, so the "dead-nodes"
380 (unreachable in the controlflow) are removed.
383 Solved some problems in the 'copy_node' function. The in array was not
384 as easy as it seamed.
387 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
388 optimization, which is needed in the paramter list of 'irg_walk'.
391 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
392 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
396 Removed some files from the archive, after dependencies and usage are
398 - 'ir/common/strerror.c'
400 - 'ir/ident/xx_ident.h'
401 an empty file, only included by 'ident.c', but never used;
402 - 'ir/tv/label.c' and
404 contained a numeric counter;
405 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
406 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
407 In the old fiasco compiler, the label thing is used in the backend.
408 Search for 'babil' to see the usage.
409 Also removed the two attributes 'lab' and 'used' in the tarval struct.
412 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
413 afterwards some recursive includes, so libfirm works again.
416 Did a lot of changes, which I never commented until now (4.7.00).
418 * Added new result to Start node: Pointer to global data segment.
419 * Extended Semantics of SymConst node to represent information for the
421 * Added arithmeitc nodes (Shrs, Minus ...)
423 Rearranged the directory structure and adjusted the makefiles.
424 The directories contain:
425 ir: everything for the intermediate representation (better: src?)
426 /ir: the ir itself, and standard optimizations.
427 /tv: the target value module
428 /tr: the type and entity representation
429 /adt: abstract data types
430 /common: stuff needed by all other dirs
431 /debug: debugging Unterstuetzung
433 include: external files needen as includes
434 testprograms: examples to test the lib.
436 The makefiles generate files with extension .d that contain the dependencies
440 Added access routine to attribute link of irnode in irnode.ch.
441 Added get_negated_pnc to irnode.ch.
444 Added an iterator in iropt that calls the optimization for all nodes.
445 Copied optimize's code to optimize_in_place and removed deallocations.
446 Made set_irn_n in irnode.c public.
447 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
448 are allowded as cfgpredecessors to represent dead "incoming" control
450 Added call to optimize_in_place in mature_block. Is this useful?
453 Changed tests from comparing enums to comparing pointers. This is more
454 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
455 now get_irn_op == op_And
458 Compared equivalent_value to the one in the original fiasco.
459 Added a test in case iro_And.
460 Changed implementation of iro_Div. Added routines turn_into_tuple
461 and set_irn_op() in irgmod/irnode.
462 Changed implementation of irn_Minus (although commented out).
463 Now all features are ported or documented for this function.
466 Compared computed_value to the one in the original fiasco.
467 Added one further optimization in case iro_Proj.
468 Now all features are ported for this function.
471 Updated comments in ircons.h.
474 Changed possible attribute of SymConst from type_class to type.
475 SymConst size could be the size of a union, array, ...
478 Implemented two dumpers that dump type information and a graph with
482 Implemented a walker that walks over the type informatin that can
483 be reached from an ir node.
484 Added routine get_kind(firm_thing) in common.h, Added file common.c.
485 Added files typewalk.ch and routines to irdump.
486 Added visited flags and initialization to entity and all types.
487 Implemented some of the missing access routines in type.c, entity.c
490 Implemented constructor for ShrA.
492 Added routine that iterates the graph and verifies all nodes.
493 Added Phi_in stack to irgraph. This allows to build several
494 graphs at once with respect to the Phi building algorithm.
497 Implemented dumper for control flow graphs. Changed irr_* and dead_*
498 examples to dump cfg.
501 Implemeted explicit stack for the Phi node generation. See ircons.c.
504 added include string.h in xoprintf.c to get rid of warning:
505 implicit declaration of function `bcopy'
509 Added more cases to equivalent_node.
510 Portet gigo, identify, identify_remember.
511 The set/pset library can not handle several hash tables. At least,
512 compiling several procedures causes a segmentation fault during access
513 to the tables (oo_program_example). Need to work on this.
514 transform_node still needs to be ported.
515 some cases in equivalent_node are still missing.
517 To get it running I had to remove the call to optimize in the
518 new_Block constructor. It can only be called when the Block is
522 Introduced a walker that walks only over blocks. The asserts
523 might be too strict for general graphs, but so far it works.
524 For the walker I introduced an additional flag in the attribute
525 of Blocks, an a global block_visited variable (in irgraph.h).
526 Furhter I modularized dump_ir_node, implemented dump_ir_graph
527 with the existing walker, and added new routines to output a
529 Changed the examples to call the new dump routine.
532 Added auxiliary routines to ir_node:
533 skip_Proj, skip_Nop, is_Bad ...
534 Changed access routines to use get_irn_n instead of explicit array
535 accesses. Changed get_irn_n to call skip_Id, so that the access routines
536 never will return Id nodes.
539 Repaired Phi computation, changed new_r_Phi_in. Added test program to
540 test irregular controlflow.
543 Updated optimizations computed_value and equivalent_node to new
544 Syntax of FIRM nodes and to use access routines.
545 Added routine skip_Proj in irnode.
547 2.2.2000 Boris Boesler
548 Added files irgwalk.c and irgwalk.h. They include a simple function to
549 traverse an ir graph and execute pre and post functions to current node.
552 Added arrays with parameters and result types to the type informtion
553 of a procedure. This is needed for the code generation. Also added
554 the corresponding access routines.
555 Adapted the testprograms.
558 Found a bug / complication: the call order
559 get_value (makes Phi0, put's it into graph_arr)
560 set_value (overwrites Phi0 in graph_arr)
561 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
563 fails. Added test wether graph_arr is already set in phi_merge.
565 Added tons of comments to explain Phi generation -- the stack hack.
569 irdump now outputs the pnc_number for projs of Cmp nodes.
570 Added routine to access the pnc_string.
573 Added result "dataseg" to Start node, with all it's consequences.
574 We need this for the compiler lab to translate global variables.
575 Now they can be selected from the data segment, and the start
576 node supplies the pointer to this segment.
577 These changes are guarded by preprocessor variable UEBPRAKT in
579 Changed files: common.h, irgraph.ch, irnode.h
583 removed array_example, added array-heap_example and
584 array-stack_example and adapted makefile.
586 Entity now also allows type_method as owner. This is to model
587 the stack, Sel nodes that select a variable (array) from the
588 stack need an entity that describes what they select. This
589 entity gets the type of the enclosing procedure as owner.
592 Added future access routines in `irmode.[ch]' as comments,
593 that all attributes in the ir_mode struct can be user-defined.
594 Added access routines in `irgraph.[ch]', for all attributes.
597 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
598 Added `irvrfy.[ch]' to MAKEFILE
599 Added "inline" before access routines in `irnode.h', that no warnings
600 will appear furthermore.
601 Added three more access routines in `irmode.[ch]':
602 struct tarval *get_min_of_mode (ir_mode *mode);
603 struct tarval *get_max_of_mode (ir_mode *mode);
604 struct tarval *get_null_of_mode (ir_mode *mode);
607 Adaption of Alloc, Sel and Entity to new types:
608 Changed array_example to use type instead of type_class.
609 Changed entity to allow all types as owner instead of
610 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
611 Changed alloc to allow allocating variables of any type instead of
613 Adapted all testprograms to avoid warnings.
615 removed dtest ... from Makefile, replaced by test.
618 Added "run" to makefile, added array_example to makefile of testprograms.
619 Corrected testprogram array
620 Changed assert in irvrfy -- Conv.
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