2 Some access routines for visited flags in entity.h, irnode.h,
3 bug in oo_program_example.
6 Removed all obsolete Makefiles
9 Added support for constant entities. A new example program illustrates
10 their use. Extended dumper routines to dump constant values.
13 Extendend "comfortable" construction interface by some methods
14 serving as simple shortcuts.
17 Added a class type to irgs. This class type is to be used as owner
18 for local entities of the procedure. This are all entities allocated
19 for each execution of the procedure.
20 The class type is allocated automatically by new_ir_graph(). Access
21 routines to get this type are in irgraph.h.
22 We chose a class type as this allows to represent "inner" procedures
24 Adapted array-stack-example.
27 irdump outputs nodeids instead of pointers for labels of nodes.
28 With a preprocessor flag in common.h this can be turned off.
31 Added an Id tag to every .c and .h file
34 Changed SSA constuction for exception control flow.
35 If PRECISE_EXC_CONTEXT is used Phi nodes will use the values
36 valid when the execption operation was allocated. This increases
37 the memory consuption of the construction algorithm by
41 Added method to replace in array of a node in irnode.c/h
42 Added functionality to irgmod:
43 * collect all Phi nodes as link-list in the Blocks link field
44 * collect all Proj nodes as link-list in node producing the tuple.
45 * Seperate a Block into two
46 Added inlining transformation in irgopt.h
47 Improved output of dump_ir_block_graph. Now also dumps nodes that
48 don't belong to a block.
49 Added flag opt_unreachable_code, opt_inline.
50 Changed irvrfy so that it accepts nodes with Bad predecessors.
53 renamed get_type_nameid to get_type_ident
56 Bugfix: dead node elimination did not replace the hash table
60 Added routine remove_irp_irg.
61 Changed comment to free_ir_graph.
64 Added routine to free irgraphs.
67 Improved add routines to sub, supertype in type.c
70 Added implementation of overwrites stuff.
73 Implemented stuff to change the type graph. See
74 typegmod.h and tpop.h for basic documentation of the change.
75 There now exists a type of kind type_id. If this appears
76 externally this is a bug.
79 Added some new access routines to types.
80 List of overwritten fields for entities.
81 Removed a bug in irnode.
84 Added a routine to set the mangled entity name.
85 Added two routines to copy entites.
88 Entities now have two more flags, for visibility and allocation mode.
89 Types that have a layout have a flag indicating whether the layout is
93 We distinguish three kinds of Cond nodes. These can be distinguished
94 by the mode of the selector operand and an internal flag of type cond_kind.
95 First we distinguish binary Conds and switch Conds.
96 A binary Cond has as selector a boolean value. Proj(0) projects the control
97 flow for case "False", Proj(1) the control flow for "True". A binary Cond
98 is recognized by the boolean selector.
99 The switch Cond has as selector an unsigned integer. It produces as result
100 an n+1 Tuple (cf0, ... , cfn) of control flows.
101 We differ two flavours of this Cond. The first, the dense Cond, passes
102 control along output i if the selector value is i, 0 <= i <= n. If the
103 selector value is >n it passes control along output n.
104 The second Cond flavor differes in the treatment of cases not specified in
105 the source program. It magically knows about the existence of Proj nodes.
106 It only passes control along output i, 0 <= i <= n, if a node Proj(Cond, i)
107 exists. Else it passes control along output n (even if this Proj does not
108 exist.) This Cond we call "fragmentary". There is a special constructor
109 new_defaultProj that automatically sets the flavor.
110 The two switch flavors are distinguished by a flag of type cond_kind.
111 Default flavor is "dense"
115 tv now implements Minus, Abs.
116 iropt now optimizes these and Div, Mod, Quot, DivMod.
117 Still missing: Shrs, Rot.
118 tarval_shr somtimes performs shrs, depending on the compiler/system!!
119 If the ArmRoq implementation is faulty there might appear errors.
122 Changed ircons: If undefined values are used the Phi construction
123 inserts a constant with value tarval_bad.
126 Changed array bounds in type.h to ir_node*. This allows to
127 construct array bounds that are complex constant expressions
128 simpler. Further dynamic array bounds can be displayed.
129 Comment in ircons.c extended: undefined values in start_block.
132 ifdef'ed all uses of gmp in tv.c away. Optimizations for
133 mode_Z no more supported, as well as constants of that mode.
136 Dokumentation in ir_dump
137 Habe Routinen fuer einzelne Knoten/Kanten aus header entfernt:
138 Benutzen globale Variable die nicht oeffentlich zugaenglich ist.
141 We need an entity for the array elements for the Sel nodes. This
142 entity should be stored in the array type. Changed constructor
143 parameters: include array element type. Entity for elements is built
148 Faulty use of va_arg, became visible with new, stricter gcc 2.96.
151 Added list of member entites to union. unioned_types and delimiters
152 are superfluous now -- removed.
153 Rationale: we want to express selection of a union member as a Sel
154 node. for this we need to have entities. The entities contain the
155 unioned type and have as name the delimiters...
158 Changed Makefile/MakeTargets to install headers and libraries
162 Changed Makefile and Configure scripts to produce a proper tar file
163 for distribution (libfirm-VERSION.tar)
164 Use 'make distrib' instead of 'make dist'
167 Changed implementation of tr module. With this I also changed the
168 interface!! Type casts are unnecessary now, but some access funcions
172 ======================================================================
173 ==================== New version: 0.3.0 ==============================
174 ======================================================================
180 added creation of a tar archive for distribution
181 replaced ir/.dummy.in by ir/Makefile.in
184 Changed equivalent_node() and copy_preds() so that the end block
185 is not optimized away if it has no real predecessors. This fixes
186 the problem with the while examples.
187 Added while_example in Makefile
190 Fooled around with if_while_example: Why does cse make it abort?
191 Cse removes path to End node, Bad remains as pred of Endblock.
192 The block walker can't deal with this.
193 Made new example with only loop: while_example.
196 added auto documentation in Makefiles, configure, etc
197 example in ir/ir/ircons.c - much must be added
198 creation of documentation by 'make autodoc' in architecture directory
201 added lots of #ifdef HAVE_CONFIG_G #include "config.h" #endif
202 replaced some C++ style comments (//) by standard C comments /**/
205 - configure (with some features, see --help for more)
206 - make [depend | tags | install]
207 - make [run] in testprograms
209 - compilation on SunOS
211 - automatic call of autoconf if required
214 More colours in vcg output.
215 Fixed bug: cse found that start block equals it's
216 first successor as both have the Start block as predecessor.
217 This only happens for local_optimize_graph() as during construction
218 the Start block is not entered in the value table.
219 Changed implementation: irgmod: local_optimize_graph() did not
220 empty the hash table with the irnodes for cse. This might cause that
221 cse turns up with a node that seems better but was removed from the
222 graph in an earlier optimization phase.
223 Removed old #if 1 from ircons.c
224 Commented in call of optimization for Block nodes in irgopt.c, copy_preds():
225 Optimizes blocks that had bad predecessors.
230 Moved struct from irprog.h to irprog_t.h, same for irmode.h.
231 Added a module deb_info in debug.h. Adapted makefile. Added example
233 Removed use of debug.h in ident.c. Now debug.c|h can be moved to
235 Removed inabled code for dead node elimination in irgopt.h.
236 Renamed some missnamed access routines (_of_). Macros with old names
237 are in old_fctnames.h.
238 Edited makefiles to remove #* and *.flc.
241 Some minor bugfixes...
244 After compacting of in arrays in dead_node_elimination
245 merge blocks and remove Phis with one pred.
248 Freeing of obstack in dead_node_elimination commented in.
249 Compacting in arrays of Block and Phi nodes in dead_node_
254 added set/get_SymConst_type_or_id in irnode.h
255 added field offset to entity in entity.h
256 added field size to type_class in type.h
257 include "gmp.h" in tv.h with "" instead <>
260 Some changes to make the lib better portable
263 Initialize max_node_nr in irprog.
266 Now outputs warning if faulty type in irdump, dump_type_info.
267 Explicit string termination in irdump, vcg_open.
270 Added external to declaration of irp.
271 Added typedef before pns and pnc_number.
272 irmode.c, init_mode(): We need to memset all new modes as
273 tarval_vrfy reads fields before they are initialized: It
274 compares to min/max when tarvals for min/max are allocated!
277 Changed parameter of Methods in type.h and type.c from
278 class to clss. Class is a C++ keyword.
281 Changed some testprograms to accomodate Uebprakt.
284 Finished implementation of dump_all_types.
285 Added new testprogram inheritance_example.
288 Added seven access routines in type.[hc]:
289 get_class_n_member, get_class_n_subtype, get_class_n_supertype,
290 get_strct_n_member, add_strct_member, get_strct_member and set_strct_member.
291 Fixed the type_walk_2 for those seven routines.
294 Added irdump routine dump_all_types.
295 Did changes to irprog, type, typewalk to achieve this.
296 typewalk needs to walk along members, sub and supertypes, this
297 is still missing! irdump then needs to output these edges.
299 ======================================================================
300 ==================== New version: 0.2.5 ==============================
301 ======================================================================
304 Made new Version: 0.2.5
306 15.8.2000 Goetz until 3.9.00
307 Separated irnode.h and many others into two files: one public
309 Added funcionality to extract headers for lib.
312 type_dump also dumps irg->ent
313 if_example: corrected nr of locals
316 irgopt: Correct copy of self pointer in start block.
317 irgopt: Correct treatment of loops: pre function in walker
318 breaks all possible loops in Phi and Block nodes.
319 irr_loop_example: wrong Return statement
320 Now I fixed all but one error: in memory_example.
321 This error showed a conceptual problem, so I wrote
322 a slightly different algorithm. This now runs for
324 dead_node_example: cse is buggy!! merges start and the
328 looking at bug in dead_node_elimination.
330 irnode: all get_..._arr functions changed
331 ircons: new_r_Block: set matured flag.
332 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
333 adapted call_str_example to new concepts.
336 Implemented simpler Phi construction algorithm that constructs
337 correct code for three_cfpred_example in ircons. This algorithm
338 generates more Id nodes than the original algorithm and therefore
340 Also made some changes to optimizations of Not.
343 Fixed a bug, caused by the recursive use in type.h and entity.h.
344 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
345 Fixed a problem in if_while testprogram, so it now works.
348 Fixed bug in optimize(). Returned Null instead n if
349 get_optimize() == false.
352 Added some access routines in type.[hc]. Solved a recursive definition
353 of type_class struct, entity struct and type union.
356 Separated entity header into pure functional header and header
360 ... a bunch small changes not documented
363 Changed output of oo_prog_example: now uses the internal list
364 of all irgs. Had to implement some of the access routines for
365 that. Also fixed a bug in irdump. Main routines did not use
366 current_ir_graph properly.
369 Implemented some missing parts in irgopt.
370 Added field irg to entity. Only valid if entity is a method.
371 Had to resove a cyclic de[endency between irgraph.h and entity.h
373 Added fields sub and super to type_class for inheritance.
374 Added field main_irg to irprog.
377 Fixed some bugs in irgopt.c
378 Added some missing 'get_new_node' methods, so the new obstack contains
382 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
383 Solved some copy'n'paste problems. Deleted most debug-code!
384 Added comments to several files.
387 Fixed bug in _r_ constructors for all four Div operations.
388 Fixed bug in turn_into_tuple: didn't remember the block.
389 Tested transform_node.
392 Fixed some testprograms to new semantics of firm.
393 Added testprogram global_var_example.
394 Fixed a bug in irop: Size of Sel node was (entity *) instead of
395 sel_attr. Therefor array_heap_example aborted.
396 Also found a missing break in typewalk, case iro_Alloc.
397 Added a construct that unifies all things constructed by the lib
398 and needed to represent a program: irprog.ch
399 This contains a list of all types as well as a list of all ir graphs.
400 I added calls to initialization and constructors so that this is constructed
401 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
402 Removed strange block struct and constructor from ircons.c.
403 Moved routines for automatic Phi construction from irgmod to ircons.
404 Sorted functions in ircons to reflect the different interfaces.
405 Renamed dataseg to globals to be conformant with documentation.
406 Added conservation of current_ir_graph to irgopt.c.
407 Corrected bug in Makefiles: wrong path to directory ./inlude.
410 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
411 We should change the naming of the Block constructor.
412 Removed acces routines to attr. "closed" of Block.
413 Removed second implementation of new_ir_node from ircons and some comments
414 concerned with the now resolved cyclic dependency.
415 Fixed some bugs in irgopt so that the compilation goes through.
418 Changed the irnode attribut 'visit' into 'visited'.
419 Added some access functions, like get/set_irn_visit etc.
422 Renamed some access funtion in irgraph.*.
423 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
424 Added two attributes to the irgraph struct. The visited flags belongs
425 to a ir graph, not to a whole program.
428 A new optimization has been finished. The dead-node-elimination copies
429 the existing ir graph from one opstack to another. While walking the
430 graph, only the reachable nodes will be copied, so the "dead-nodes"
431 (unreachable in the controlflow) are removed.
434 Solved some problems in the 'copy_node' function. The in array was not
435 as easy as it seamed.
438 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
439 optimization, which is needed in the paramter list of 'irg_walk'.
442 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
443 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
447 Removed some files from the archive, after dependencies and usage are
449 - 'ir/common/strerror.c'
451 - 'ir/ident/xx_ident.h'
452 an empty file, only included by 'ident.c', but never used;
453 - 'ir/tv/label.c' and
455 contained a numeric counter;
456 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
457 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
458 In the old fiasco compiler, the label thing is used in the backend.
459 Search for 'babil' to see the usage.
460 Also removed the two attributes 'lab' and 'used' in the tarval struct.
463 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
464 afterwards some recursive includes, so libfirm works again.
467 Did a lot of changes, which I never commented until now (4.7.00).
469 * Added new result to Start node: Pointer to global data segment.
470 * Extended Semantics of SymConst node to represent information for the
472 * Added arithmeitc nodes (Shrs, Minus ...)
474 Rearranged the directory structure and adjusted the makefiles.
475 The directories contain:
476 ir: everything for the intermediate representation (better: src?)
477 /ir: the ir itself, and standard optimizations.
478 /tv: the target value module
479 /tr: the type and entity representation
480 /adt: abstract data types
481 /common: stuff needed by all other dirs
482 /debug: debugging Unterstuetzung
484 include: external files needen as includes
485 testprograms: examples to test the lib.
487 The makefiles generate files with extension .d that contain the dependencies
491 Added access routine to attribute link of irnode in irnode.ch.
492 Added get_negated_pnc to irnode.ch.
495 Added an iterator in iropt that calls the optimization for all nodes.
496 Copied optimize's code to optimize_in_place and removed deallocations.
497 Made set_irn_n in irnode.c public.
498 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
499 are allowded as cfgpredecessors to represent dead "incoming" control
501 Added call to optimize_in_place in mature_block. Is this useful?
504 Changed tests from comparing enums to comparing pointers. This is more
505 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
506 now get_irn_op == op_And
509 Compared equivalent_value to the one in the original fiasco.
510 Added a test in case iro_And.
511 Changed implementation of iro_Div. Added routines turn_into_tuple
512 and set_irn_op() in irgmod/irnode.
513 Changed implementation of irn_Minus (although commented out).
514 Now all features are ported or documented for this function.
517 Compared computed_value to the one in the original fiasco.
518 Added one further optimization in case iro_Proj.
519 Now all features are ported for this function.
522 Updated comments in ircons.h.
525 Changed possible attribute of SymConst from type_class to type.
526 SymConst size could be the size of a union, array, ...
529 Implemented two dumpers that dump type information and a graph with
533 Implemented a walker that walks over the type informatin that can
534 be reached from an ir node.
535 Added routine get_kind(firm_thing) in common.h, Added file common.c.
536 Added files typewalk.ch and routines to irdump.
537 Added visited flags and initialization to entity and all types.
538 Implemented some of the missing access routines in type.c, entity.c
541 Implemented constructor for ShrA.
543 Added routine that iterates the graph and verifies all nodes.
544 Added Phi_in stack to irgraph. This allows to build several
545 graphs at once with respect to the Phi building algorithm.
548 Implemented dumper for control flow graphs. Changed irr_* and dead_*
549 examples to dump cfg.
552 Implemeted explicit stack for the Phi node generation. See ircons.c.
555 added include string.h in xoprintf.c to get rid of warning:
556 implicit declaration of function `bcopy'
560 Added more cases to equivalent_node.
561 Portet gigo, identify, identify_remember.
562 The set/pset library can not handle several hash tables. At least,
563 compiling several procedures causes a segmentation fault during access
564 to the tables (oo_program_example). Need to work on this.
565 transform_node still needs to be ported.
566 some cases in equivalent_node are still missing.
568 To get it running I had to remove the call to optimize in the
569 new_Block constructor. It can only be called when the Block is
573 Introduced a walker that walks only over blocks. The asserts
574 might be too strict for general graphs, but so far it works.
575 For the walker I introduced an additional flag in the attribute
576 of Blocks, an a global block_visited variable (in irgraph.h).
577 Furhter I modularized dump_ir_node, implemented dump_ir_graph
578 with the existing walker, and added new routines to output a
580 Changed the examples to call the new dump routine.
583 Added auxiliary routines to ir_node:
584 skip_Proj, skip_Nop, is_Bad ...
585 Changed access routines to use get_irn_n instead of explicit array
586 accesses. Changed get_irn_n to call skip_Id, so that the access routines
587 never will return Id nodes.
590 Repaired Phi computation, changed new_r_Phi_in. Added test program to
591 test irregular controlflow.
594 Updated optimizations computed_value and equivalent_node to new
595 Syntax of FIRM nodes and to use access routines.
596 Added routine skip_Proj in irnode.
598 2.2.2000 Boris Boesler
599 Added files irgwalk.c and irgwalk.h. They include a simple function to
600 traverse an ir graph and execute pre and post functions to current node.
603 Added arrays with parameters and result types to the type informtion
604 of a procedure. This is needed for the code generation. Also added
605 the corresponding access routines.
606 Adapted the testprograms.
609 Found a bug / complication: the call order
610 get_value (makes Phi0, put's it into graph_arr)
611 set_value (overwrites Phi0 in graph_arr)
612 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
614 fails. Added test wether graph_arr is already set in phi_merge.
616 Added tons of comments to explain Phi generation -- the stack hack.
620 irdump now outputs the pnc_number for projs of Cmp nodes.
621 Added routine to access the pnc_string.
624 Added result "dataseg" to Start node, with all it's consequences.
625 We need this for the compiler lab to translate global variables.
626 Now they can be selected from the data segment, and the start
627 node supplies the pointer to this segment.
628 These changes are guarded by preprocessor variable UEBPRAKT in
630 Changed files: common.h, irgraph.ch, irnode.h
634 removed array_example, added array-heap_example and
635 array-stack_example and adapted makefile.
637 Entity now also allows type_method as owner. This is to model
638 the stack, Sel nodes that select a variable (array) from the
639 stack need an entity that describes what they select. This
640 entity gets the type of the enclosing procedure as owner.
643 Added future access routines in `irmode.[ch]' as comments,
644 that all attributes in the ir_mode struct can be user-defined.
645 Added access routines in `irgraph.[ch]', for all attributes.
648 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
649 Added `irvrfy.[ch]' to MAKEFILE
650 Added "inline" before access routines in `irnode.h', that no warnings
651 will appear furthermore.
652 Added three more access routines in `irmode.[ch]':
653 struct tarval *get_min_of_mode (ir_mode *mode);
654 struct tarval *get_max_of_mode (ir_mode *mode);
655 struct tarval *get_null_of_mode (ir_mode *mode);
658 Adaption of Alloc, Sel and Entity to new types:
659 Changed array_example to use type instead of type_class.
660 Changed entity to allow all types as owner instead of
661 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
662 Changed alloc to allow allocating variables of any type instead of
664 Adapted all testprograms to avoid warnings.
666 removed dtest ... from Makefile, replaced by test.
669 Added "run" to makefile, added array_example to makefile of testprograms.
670 Corrected testprogram array
671 Changed assert in irvrfy -- Conv.
projects / libfirm / blob