2 Added a routine to set the mangled entity name.
3 Added two routines to copy entites.
6 Entities now have two more flags, for visibility and allocation mode.
7 Types that have a layout have a flag indicating whether the layout is
11 We distinguish three kinds of Cond nodes. These can be distinguished
12 by the mode of the selector operand and an internal flag of type cond_kind.
13 First we distinguish binary Conds and switch Conds.
14 A binary Cond has as selector a boolean value. Proj(0) projects the control
15 flow for case "False", Proj(1) the control flow for "True". A binary Cond
16 is recognized by the boolean selector.
17 The switch Cond has as selector an unsigned integer. It produces as result
18 an n+1 Tuple (cf0, ... , cfn) of control flows.
19 We differ two flavours of this Cond. The first, the dense Cond, passes
20 control along output i if the selector value is i, 0 <= i <= n. If the
21 selector value is >n it passes control along output n.
22 The second Cond flavor differes in the treatment of cases not specified in
23 the source program. It magically knows about the existence of Proj nodes.
24 It only passes control along output i, 0 <= i <= n, if a node Proj(Cond, i)
25 exists. Else it passes control along output n (even if this Proj does not
26 exist.) This Cond we call "fragmentary". There is a special constructor
27 new_defaultProj that automatically sets the flavor.
28 The two switch flavors are distinguished by a flag of type cond_kind.
29 Default flavor is "dense"
33 tv now implements Minus, Abs.
34 iropt now optimizes these and Div, Mod, Quot, DivMod.
35 Still missing: Shrs, Rot.
36 tarval_shr somtimes performs shrs, depending on the compiler/system!!
37 If the ArmRoq implementation is faulty there might appear errors.
40 Changed ircons: If undefined values are used the Phi construction
41 inserts a constant with value tarval_bad.
44 Changed array bounds in type.h to ir_node*. This allows to
45 construct array bounds that are complex constant expressions
46 simpler. Further dynamic array bounds can be displayed.
47 Comment in ircons.c extended: undefined values in start_block.
50 ifdef'ed all uses of gmp in tv.c away. Optimizations for
51 mode_Z no more supported, as well as constants of that mode.
54 Dokumentation in ir_dump
55 Habe Routinen fuer einzelne Knoten/Kanten aus header entfernt:
56 Benutzen globale Variable die nicht oeffentlich zugaenglich ist.
59 We need an entity for the array elements for the Sel nodes. This
60 entity should be stored in the array type. Changed constructor
61 parameters: include array element type. Entity for elements is built
66 Faulty use of va_arg, became visible with new, stricter gcc 2.96.
69 Added list of member entites to union. unioned_types and delimiters
70 are superfluous now -- removed.
71 Rationale: we want to express selection of a union member as a Sel
72 node. for this we need to have entities. The entities contain the
73 unioned type and have as name the delimiters...
76 Changed Makefile/MakeTargets to install headers and libraries
80 Changed Makefile and Configure scripts to produce a proper tar file
81 for distribution (libfirm-VERSION.tar)
82 Use 'make distrib' instead of 'make dist'
85 Changed implementation of tr module. With this I also changed the
86 interface!! Type casts are unnecessary now, but some access funcions
90 ======================================================================
91 ==================== New version: 0.3.0 ==============================
92 ======================================================================
98 added creation of a tar archive for distribution
99 replaced ir/.dummy.in by ir/Makefile.in
102 Changed equivalent_node() and copy_preds() so that the end block
103 is not optimized away if it has no real predecessors. This fixes
104 the problem with the while examples.
105 Added while_example in Makefile
108 Fooled around with if_while_example: Why does cse make it abort?
109 Cse removes path to End node, Bad remains as pred of Endblock.
110 The block walker can't deal with this.
111 Made new example with only loop: while_example.
114 added auto documentation in Makefiles, configure, etc
115 example in ir/ir/ircons.c - much must be added
116 creation of documentation by 'make autodoc' in architecture directory
119 added lots of #ifdef HAVE_CONFIG_G #include "config.h" #endif
120 replaced some C++ style comments (//) by standard C comments /**/
123 - configure (with some features, see --help for more)
124 - make [depend | tags | install]
125 - make [run] in testprograms
127 - compilation on SunOS
129 - automatic call of autoconf if required
132 More colours in vcg output.
133 Fixed bug: cse found that start block equals it's
134 first successor as both have the Start block as predecessor.
135 This only happens for local_optimize_graph() as during construction
136 the Start block is not entered in the value table.
137 Changed implementation: irgmod: local_optimize_graph() did not
138 empty the hash table with the irnodes for cse. This might cause that
139 cse turns up with a node that seems better but was removed from the
140 graph in an earlier optimization phase.
141 Removed old #if 1 from ircons.c
142 Commented in call of optimization for Block nodes in irgopt.c, copy_preds():
143 Optimizes blocks that had bad predecessors.
148 Moved struct from irprog.h to irprog_t.h, same for irmode.h.
149 Added a module deb_info in debug.h. Adapted makefile. Added example
151 Removed use of debug.h in ident.c. Now debug.c|h can be moved to
153 Removed inabled code for dead node elimination in irgopt.h.
154 Renamed some missnamed access routines (_of_). Macros with old names
155 are in old_fctnames.h.
156 Edited makefiles to remove #* and *.flc.
159 Some minor bugfixes...
162 After compacting of in arrays in dead_node_elimination
163 merge blocks and remove Phis with one pred.
166 Freeing of obstack in dead_node_elimination commented in.
167 Compacting in arrays of Block and Phi nodes in dead_node_
172 added set/get_SymConst_type_or_id in irnode.h
173 added field offset to entity in entity.h
174 added field size to type_class in type.h
175 include "gmp.h" in tv.h with "" instead <>
178 Some changes to make the lib better portable
181 Initialize max_node_nr in irprog.
184 Now outputs warning if faulty type in irdump, dump_type_info.
185 Explicit string termination in irdump, vcg_open.
188 Added external to declaration of irp.
189 Added typedef before pns and pnc_number.
190 irmode.c, init_mode(): We need to memset all new modes as
191 tarval_vrfy reads fields before they are initialized: It
192 compares to min/max when tarvals for min/max are allocated!
195 Changed parameter of Methods in type.h and type.c from
196 class to clss. Class is a C++ keyword.
199 Changed some testprograms to accomodate Uebprakt.
202 Finished implementation of dump_all_types.
203 Added new testprogram inheritance_example.
206 Added seven access routines in type.[hc]:
207 get_class_n_member, get_class_n_subtype, get_class_n_supertype,
208 get_strct_n_member, add_strct_member, get_strct_member and set_strct_member.
209 Fixed the type_walk_2 for those seven routines.
212 Added irdump routine dump_all_types.
213 Did changes to irprog, type, typewalk to achieve this.
214 typewalk needs to walk along members, sub and supertypes, this
215 is still missing! irdump then needs to output these edges.
217 ======================================================================
218 ==================== New version: 0.2.5 ==============================
219 ======================================================================
222 Made new Version: 0.2.5
224 15.8.2000 Goetz until 3.9.00
225 Separated irnode.h and many others into two files: one public
227 Added funcionality to extract headers for lib.
230 type_dump also dumps irg->ent
231 if_example: corrected nr of locals
234 irgopt: Correct copy of self pointer in start block.
235 irgopt: Correct treatment of loops: pre function in walker
236 breaks all possible loops in Phi and Block nodes.
237 irr_loop_example: wrong Return statement
238 Now I fixed all but one error: in memory_example.
239 This error showed a conceptual problem, so I wrote
240 a slightly different algorithm. This now runs for
242 dead_node_example: cse is buggy!! merges start and the
246 looking at bug in dead_node_elimination.
248 irnode: all get_..._arr functions changed
249 ircons: new_r_Block: set matured flag.
250 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
251 adapted call_str_example to new concepts.
254 Implemented simpler Phi construction algorithm that constructs
255 correct code for three_cfpred_example in ircons. This algorithm
256 generates more Id nodes than the original algorithm and therefore
258 Also made some changes to optimizations of Not.
261 Fixed a bug, caused by the recursive use in type.h and entity.h.
262 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
263 Fixed a problem in if_while testprogram, so it now works.
266 Fixed bug in optimize(). Returned Null instead n if
267 get_optimize() == false.
270 Added some access routines in type.[hc]. Solved a recursive definition
271 of type_class struct, entity struct and type union.
274 Separated entity header into pure functional header and header
278 ... a bunch small changes not documented
281 Changed output of oo_prog_example: now uses the internal list
282 of all irgs. Had to implement some of the access routines for
283 that. Also fixed a bug in irdump. Main routines did not use
284 current_ir_graph properly.
287 Implemented some missing parts in irgopt.
288 Added field irg to entity. Only valid if entity is a method.
289 Had to resove a cyclic de[endency between irgraph.h and entity.h
291 Added fields sub and super to type_class for inheritance.
292 Added field main_irg to irprog.
295 Fixed some bugs in irgopt.c
296 Added some missing 'get_new_node' methods, so the new obstack contains
300 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
301 Solved some copy'n'paste problems. Deleted most debug-code!
302 Added comments to several files.
305 Fixed bug in _r_ constructors for all four Div operations.
306 Fixed bug in turn_into_tuple: didn't remember the block.
307 Tested transform_node.
310 Fixed some testprograms to new semantics of firm.
311 Added testprogram global_var_example.
312 Fixed a bug in irop: Size of Sel node was (entity *) instead of
313 sel_attr. Therefor array_heap_example aborted.
314 Also found a missing break in typewalk, case iro_Alloc.
315 Added a construct that unifies all things constructed by the lib
316 and needed to represent a program: irprog.ch
317 This contains a list of all types as well as a list of all ir graphs.
318 I added calls to initialization and constructors so that this is constructed
319 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
320 Removed strange block struct and constructor from ircons.c.
321 Moved routines for automatic Phi construction from irgmod to ircons.
322 Sorted functions in ircons to reflect the different interfaces.
323 Renamed dataseg to globals to be conformant with documentation.
324 Added conservation of current_ir_graph to irgopt.c.
325 Corrected bug in Makefiles: wrong path to directory ./inlude.
328 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
329 We should change the naming of the Block constructor.
330 Removed acces routines to attr. "closed" of Block.
331 Removed second implementation of new_ir_node from ircons and some comments
332 concerned with the now resolved cyclic dependency.
333 Fixed some bugs in irgopt so that the compilation goes through.
336 Changed the irnode attribut 'visit' into 'visited'.
337 Added some access functions, like get/set_irn_visit etc.
340 Renamed some access funtion in irgraph.*.
341 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
342 Added two attributes to the irgraph struct. The visited flags belongs
343 to a ir graph, not to a whole program.
346 A new optimization has been finished. The dead-node-elimination copies
347 the existing ir graph from one opstack to another. While walking the
348 graph, only the reachable nodes will be copied, so the "dead-nodes"
349 (unreachable in the controlflow) are removed.
352 Solved some problems in the 'copy_node' function. The in array was not
353 as easy as it seamed.
356 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
357 optimization, which is needed in the paramter list of 'irg_walk'.
360 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
361 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
365 Removed some files from the archive, after dependencies and usage are
367 - 'ir/common/strerror.c'
369 - 'ir/ident/xx_ident.h'
370 an empty file, only included by 'ident.c', but never used;
371 - 'ir/tv/label.c' and
373 contained a numeric counter;
374 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
375 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
376 In the old fiasco compiler, the label thing is used in the backend.
377 Search for 'babil' to see the usage.
378 Also removed the two attributes 'lab' and 'used' in the tarval struct.
381 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
382 afterwards some recursive includes, so libfirm works again.
385 Did a lot of changes, which I never commented until now (4.7.00).
387 * Added new result to Start node: Pointer to global data segment.
388 * Extended Semantics of SymConst node to represent information for the
390 * Added arithmeitc nodes (Shrs, Minus ...)
392 Rearranged the directory structure and adjusted the makefiles.
393 The directories contain:
394 ir: everything for the intermediate representation (better: src?)
395 /ir: the ir itself, and standard optimizations.
396 /tv: the target value module
397 /tr: the type and entity representation
398 /adt: abstract data types
399 /common: stuff needed by all other dirs
400 /debug: debugging Unterstuetzung
402 include: external files needen as includes
403 testprograms: examples to test the lib.
405 The makefiles generate files with extension .d that contain the dependencies
409 Added access routine to attribute link of irnode in irnode.ch.
410 Added get_negated_pnc to irnode.ch.
413 Added an iterator in iropt that calls the optimization for all nodes.
414 Copied optimize's code to optimize_in_place and removed deallocations.
415 Made set_irn_n in irnode.c public.
416 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
417 are allowded as cfgpredecessors to represent dead "incoming" control
419 Added call to optimize_in_place in mature_block. Is this useful?
422 Changed tests from comparing enums to comparing pointers. This is more
423 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
424 now get_irn_op == op_And
427 Compared equivalent_value to the one in the original fiasco.
428 Added a test in case iro_And.
429 Changed implementation of iro_Div. Added routines turn_into_tuple
430 and set_irn_op() in irgmod/irnode.
431 Changed implementation of irn_Minus (although commented out).
432 Now all features are ported or documented for this function.
435 Compared computed_value to the one in the original fiasco.
436 Added one further optimization in case iro_Proj.
437 Now all features are ported for this function.
440 Updated comments in ircons.h.
443 Changed possible attribute of SymConst from type_class to type.
444 SymConst size could be the size of a union, array, ...
447 Implemented two dumpers that dump type information and a graph with
451 Implemented a walker that walks over the type informatin that can
452 be reached from an ir node.
453 Added routine get_kind(firm_thing) in common.h, Added file common.c.
454 Added files typewalk.ch and routines to irdump.
455 Added visited flags and initialization to entity and all types.
456 Implemented some of the missing access routines in type.c, entity.c
459 Implemented constructor for ShrA.
461 Added routine that iterates the graph and verifies all nodes.
462 Added Phi_in stack to irgraph. This allows to build several
463 graphs at once with respect to the Phi building algorithm.
466 Implemented dumper for control flow graphs. Changed irr_* and dead_*
467 examples to dump cfg.
470 Implemeted explicit stack for the Phi node generation. See ircons.c.
473 added include string.h in xoprintf.c to get rid of warning:
474 implicit declaration of function `bcopy'
478 Added more cases to equivalent_node.
479 Portet gigo, identify, identify_remember.
480 The set/pset library can not handle several hash tables. At least,
481 compiling several procedures causes a segmentation fault during access
482 to the tables (oo_program_example). Need to work on this.
483 transform_node still needs to be ported.
484 some cases in equivalent_node are still missing.
486 To get it running I had to remove the call to optimize in the
487 new_Block constructor. It can only be called when the Block is
491 Introduced a walker that walks only over blocks. The asserts
492 might be too strict for general graphs, but so far it works.
493 For the walker I introduced an additional flag in the attribute
494 of Blocks, an a global block_visited variable (in irgraph.h).
495 Furhter I modularized dump_ir_node, implemented dump_ir_graph
496 with the existing walker, and added new routines to output a
498 Changed the examples to call the new dump routine.
501 Added auxiliary routines to ir_node:
502 skip_Proj, skip_Nop, is_Bad ...
503 Changed access routines to use get_irn_n instead of explicit array
504 accesses. Changed get_irn_n to call skip_Id, so that the access routines
505 never will return Id nodes.
508 Repaired Phi computation, changed new_r_Phi_in. Added test program to
509 test irregular controlflow.
512 Updated optimizations computed_value and equivalent_node to new
513 Syntax of FIRM nodes and to use access routines.
514 Added routine skip_Proj in irnode.
516 2.2.2000 Boris Boesler
517 Added files irgwalk.c and irgwalk.h. They include a simple function to
518 traverse an ir graph and execute pre and post functions to current node.
521 Added arrays with parameters and result types to the type informtion
522 of a procedure. This is needed for the code generation. Also added
523 the corresponding access routines.
524 Adapted the testprograms.
527 Found a bug / complication: the call order
528 get_value (makes Phi0, put's it into graph_arr)
529 set_value (overwrites Phi0 in graph_arr)
530 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
532 fails. Added test wether graph_arr is already set in phi_merge.
534 Added tons of comments to explain Phi generation -- the stack hack.
538 irdump now outputs the pnc_number for projs of Cmp nodes.
539 Added routine to access the pnc_string.
542 Added result "dataseg" to Start node, with all it's consequences.
543 We need this for the compiler lab to translate global variables.
544 Now they can be selected from the data segment, and the start
545 node supplies the pointer to this segment.
546 These changes are guarded by preprocessor variable UEBPRAKT in
548 Changed files: common.h, irgraph.ch, irnode.h
552 removed array_example, added array-heap_example and
553 array-stack_example and adapted makefile.
555 Entity now also allows type_method as owner. This is to model
556 the stack, Sel nodes that select a variable (array) from the
557 stack need an entity that describes what they select. This
558 entity gets the type of the enclosing procedure as owner.
561 Added future access routines in `irmode.[ch]' as comments,
562 that all attributes in the ir_mode struct can be user-defined.
563 Added access routines in `irgraph.[ch]', for all attributes.
566 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
567 Added `irvrfy.[ch]' to MAKEFILE
568 Added "inline" before access routines in `irnode.h', that no warnings
569 will appear furthermore.
570 Added three more access routines in `irmode.[ch]':
571 struct tarval *get_min_of_mode (ir_mode *mode);
572 struct tarval *get_max_of_mode (ir_mode *mode);
573 struct tarval *get_null_of_mode (ir_mode *mode);
576 Adaption of Alloc, Sel and Entity to new types:
577 Changed array_example to use type instead of type_class.
578 Changed entity to allow all types as owner instead of
579 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
580 Changed alloc to allow allocating variables of any type instead of
582 Adapted all testprograms to avoid warnings.
584 removed dtest ... from Makefile, replaced by test.
587 Added "run" to makefile, added array_example to makefile of testprograms.
588 Corrected testprogram array
589 Changed assert in irvrfy -- Conv.
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