2 Bugfix in inlining: problems in combination with cse.
5 Implemented cf optimizations.
6 Checked compiler flags -- sorted better to fit optimizations.
10 Implemented code placement.
14 irdom implemented: dominator information.
17 Bugfix Optmierung Binops mit mode Tupel.
20 irgopt: inline_small_irgs implemented
23 Bugfixes, some access functions ...
26 New directory: ana for analyses. Adapted configure/makefiles
27 implemented irout: backedges. Added one field to ir_graph, one to ir_node.
28 Implemented state management for irgraphs: see irgraph.h.
29 Must now call finalize_cons() after graph construction!!
33 Flag pinned in irop, irgraph.
34 Global cse in irop, setting the irgraph flag.
35 Example programs: Endless_loop.c. global_cse.c.
39 Implemented support for endless loops:
41 Adapted Phi constructors so that memory phis are added.
42 Adapted Cond optimization: add block to End.
43 Adapted dead node elimination: compation of Ends predecessors
44 Adapted inlineing: remember keepalives of inlined graph.
45 Added informative strings to asserts in irvrfy.
48 Added volatile flag to entity, order flag to array.
49 Added a set of assertions.
52 Added access function set_class_members()
55 Asserts in irvrfy that verify the mode of Proj nodes. For Start,
56 Call, Return they check the corresponding function type! Corrected
58 Some asserts for legal values of 'pos' arguments in type/entity
62 Some access routines for visited flags in entity.h, irnode.h,
63 bug in oo_program_example.
66 Removed all obsolete Makefiles
69 Added support for constant entities. A new example program illustrates
70 their use. Extended dumper routines to dump constant values.
73 Extendend "comfortable" construction interface by some methods
74 serving as simple shortcuts.
77 Added a class type to irgs. This class type is to be used as owner
78 for local entities of the procedure. This are all entities allocated
79 for each execution of the procedure.
80 The class type is allocated automatically by new_ir_graph(). Access
81 routines to get this type are in irgraph.h.
82 We chose a class type as this allows to represent "inner" procedures
84 Adapted array-stack-example.
87 irdump outputs nodeids instead of pointers for labels of nodes.
88 With a preprocessor flag in common.h this can be turned off.
91 Added an Id tag to every .c and .h file
94 Changed SSA constuction for exception control flow.
95 If PRECISE_EXC_CONTEXT is used Phi nodes will use the values
96 valid when the execption operation was allocated. This increases
97 the memory consuption of the construction algorithm by
101 Added method to replace in array of a node in irnode.c/h
102 Added functionality to irgmod:
103 * collect all Phi nodes as link-list in the Blocks link field
104 * collect all Proj nodes as link-list in node producing the tuple.
105 * Seperate a Block into two
106 Added inlining transformation in irgopt.h
107 Improved output of dump_ir_block_graph. Now also dumps nodes that
108 don't belong to a block.
109 Added flag opt_unreachable_code, opt_inline.
110 Changed irvrfy so that it accepts nodes with Bad predecessors.
113 renamed get_type_nameid to get_type_ident
116 Bugfix: dead node elimination did not replace the hash table
120 Added routine remove_irp_irg.
121 Changed comment to free_ir_graph.
124 Added routine to free irgraphs.
127 Improved add routines to sub, supertype in type.c
130 Added implementation of overwrites stuff.
133 Implemented stuff to change the type graph. See
134 typegmod.h and tpop.h for basic documentation of the change.
135 There now exists a type of kind type_id. If this appears
136 externally this is a bug.
139 Added some new access routines to types.
140 List of overwritten fields for entities.
141 Removed a bug in irnode.
144 Added a routine to set the mangled entity name.
145 Added two routines to copy entites.
148 Entities now have two more flags, for visibility and allocation mode.
149 Types that have a layout have a flag indicating whether the layout is
153 We distinguish three kinds of Cond nodes. These can be distinguished
154 by the mode of the selector operand and an internal flag of type cond_kind.
155 First we distinguish binary Conds and switch Conds.
156 A binary Cond has as selector a boolean value. Proj(0) projects the control
157 flow for case "False", Proj(1) the control flow for "True". A binary Cond
158 is recognized by the boolean selector.
159 The switch Cond has as selector an unsigned integer. It produces as result
160 an n+1 Tuple (cf0, ... , cfn) of control flows.
161 We differ two flavours of this Cond. The first, the dense Cond, passes
162 control along output i if the selector value is i, 0 <= i <= n. If the
163 selector value is >n it passes control along output n.
164 The second Cond flavor differes in the treatment of cases not specified in
165 the source program. It magically knows about the existence of Proj nodes.
166 It only passes control along output i, 0 <= i <= n, if a node Proj(Cond, i)
167 exists. Else it passes control along output n (even if this Proj does not
168 exist.) This Cond we call "fragmentary". There is a special constructor
169 new_defaultProj that automatically sets the flavor.
170 The two switch flavors are distinguished by a flag of type cond_kind.
171 Default flavor is "dense"
175 tv now implements Minus, Abs.
176 iropt now optimizes these and Div, Mod, Quot, DivMod.
177 Still missing: Shrs, Rot.
178 tarval_shr somtimes performs shrs, depending on the compiler/system!!
179 If the ArmRoq implementation is faulty there might appear errors.
182 Changed ircons: If undefined values are used the Phi construction
183 inserts a constant with value tarval_bad.
186 Changed array bounds in type.h to ir_node*. This allows to
187 construct array bounds that are complex constant expressions
188 simpler. Further dynamic array bounds can be displayed.
189 Comment in ircons.c extended: undefined values in start_block.
192 ifdef'ed all uses of gmp in tv.c away. Optimizations for
193 mode_Z no more supported, as well as constants of that mode.
196 Dokumentation in ir_dump
197 Habe Routinen fuer einzelne Knoten/Kanten aus header entfernt:
198 Benutzen globale Variable die nicht oeffentlich zugaenglich ist.
201 We need an entity for the array elements for the Sel nodes. This
202 entity should be stored in the array type. Changed constructor
203 parameters: include array element type. Entity for elements is built
208 Faulty use of va_arg, became visible with new, stricter gcc 2.96.
211 Added list of member entites to union. unioned_types and delimiters
212 are superfluous now -- removed.
213 Rationale: we want to express selection of a union member as a Sel
214 node. for this we need to have entities. The entities contain the
215 unioned type and have as name the delimiters...
218 Changed Makefile/MakeTargets to install headers and libraries
222 Changed Makefile and Configure scripts to produce a proper tar file
223 for distribution (libfirm-VERSION.tar)
224 Use 'make distrib' instead of 'make dist'
227 Changed implementation of tr module. With this I also changed the
228 interface!! Type casts are unnecessary now, but some access funcions
232 ======================================================================
233 ==================== New version: 0.3.0 ==============================
234 ======================================================================
240 added creation of a tar archive for distribution
241 replaced ir/.dummy.in by ir/Makefile.in
244 Changed equivalent_node() and copy_preds() so that the end block
245 is not optimized away if it has no real predecessors. This fixes
246 the problem with the while examples.
247 Added while_example in Makefile
250 Fooled around with if_while_example: Why does cse make it abort?
251 Cse removes path to End node, Bad remains as pred of Endblock.
252 The block walker can't deal with this.
253 Made new example with only loop: while_example.
256 added auto documentation in Makefiles, configure, etc
257 example in ir/ir/ircons.c - much must be added
258 creation of documentation by 'make autodoc' in architecture directory
261 added lots of #ifdef HAVE_CONFIG_G #include "config.h" #endif
262 replaced some C++ style comments (//) by standard C comments /**/
265 - configure (with some features, see --help for more)
266 - make [depend | tags | install]
267 - make [run] in testprograms
269 - compilation on SunOS
271 - automatic call of autoconf if required
274 More colours in vcg output.
275 Fixed bug: cse found that start block equals it's
276 first successor as both have the Start block as predecessor.
277 This only happens for local_optimize_graph() as during construction
278 the Start block is not entered in the value table.
279 Changed implementation: irgmod: local_optimize_graph() did not
280 empty the hash table with the irnodes for cse. This might cause that
281 cse turns up with a node that seems better but was removed from the
282 graph in an earlier optimization phase.
283 Removed old #if 1 from ircons.c
284 Commented in call of optimization for Block nodes in irgopt.c, copy_preds():
285 Optimizes blocks that had bad predecessors.
290 Moved struct from irprog.h to irprog_t.h, same for irmode.h.
291 Added a module deb_info in debug.h. Adapted makefile. Added example
293 Removed use of debug.h in ident.c. Now debug.c|h can be moved to
295 Removed inabled code for dead node elimination in irgopt.h.
296 Renamed some missnamed access routines (_of_). Macros with old names
297 are in old_fctnames.h.
298 Edited makefiles to remove #* and *.flc.
301 Some minor bugfixes...
304 After compacting of in arrays in dead_node_elimination
305 merge blocks and remove Phis with one pred.
308 Freeing of obstack in dead_node_elimination commented in.
309 Compacting in arrays of Block and Phi nodes in dead_node_
314 added set/get_SymConst_type_or_id in irnode.h
315 added field offset to entity in entity.h
316 added field size to type_class in type.h
317 include "gmp.h" in tv.h with "" instead <>
320 Some changes to make the lib better portable
323 Initialize max_node_nr in irprog.
326 Now outputs warning if faulty type in irdump, dump_type_info.
327 Explicit string termination in irdump, vcg_open.
330 Added external to declaration of irp.
331 Added typedef before pns and pnc_number.
332 irmode.c, init_mode(): We need to memset all new modes as
333 tarval_vrfy reads fields before they are initialized: It
334 compares to min/max when tarvals for min/max are allocated!
337 Changed parameter of Methods in type.h and type.c from
338 class to clss. Class is a C++ keyword.
341 Changed some testprograms to accomodate Uebprakt.
344 Finished implementation of dump_all_types.
345 Added new testprogram inheritance_example.
348 Added seven access routines in type.[hc]:
349 get_class_n_member, get_class_n_subtype, get_class_n_supertype,
350 get_strct_n_member, add_strct_member, get_strct_member and set_strct_member.
351 Fixed the type_walk_2 for those seven routines.
354 Added irdump routine dump_all_types.
355 Did changes to irprog, type, typewalk to achieve this.
356 typewalk needs to walk along members, sub and supertypes, this
357 is still missing! irdump then needs to output these edges.
359 ======================================================================
360 ==================== New version: 0.2.5 ==============================
361 ======================================================================
364 Made new Version: 0.2.5
366 15.8.2000 Goetz until 3.9.00
367 Separated irnode.h and many others into two files: one public
369 Added funcionality to extract headers for lib.
372 type_dump also dumps irg->ent
373 if_example: corrected nr of locals
376 irgopt: Correct copy of self pointer in start block.
377 irgopt: Correct treatment of loops: pre function in walker
378 breaks all possible loops in Phi and Block nodes.
379 irr_loop_example: wrong Return statement
380 Now I fixed all but one error: in memory_example.
381 This error showed a conceptual problem, so I wrote
382 a slightly different algorithm. This now runs for
384 dead_node_example: cse is buggy!! merges start and the
388 looking at bug in dead_node_elimination.
390 irnode: all get_..._arr functions changed
391 ircons: new_r_Block: set matured flag.
392 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
393 adapted call_str_example to new concepts.
396 Implemented simpler Phi construction algorithm that constructs
397 correct code for three_cfpred_example in ircons. This algorithm
398 generates more Id nodes than the original algorithm and therefore
400 Also made some changes to optimizations of Not.
403 Fixed a bug, caused by the recursive use in type.h and entity.h.
404 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
405 Fixed a problem in if_while testprogram, so it now works.
408 Fixed bug in optimize(). Returned Null instead n if
409 get_optimize() == false.
412 Added some access routines in type.[hc]. Solved a recursive definition
413 of type_class struct, entity struct and type union.
416 Separated entity header into pure functional header and header
420 ... a bunch small changes not documented
423 Changed output of oo_prog_example: now uses the internal list
424 of all irgs. Had to implement some of the access routines for
425 that. Also fixed a bug in irdump. Main routines did not use
426 current_ir_graph properly.
429 Implemented some missing parts in irgopt.
430 Added field irg to entity. Only valid if entity is a method.
431 Had to resove a cyclic de[endency between irgraph.h and entity.h
433 Added fields sub and super to type_class for inheritance.
434 Added field main_irg to irprog.
437 Fixed some bugs in irgopt.c
438 Added some missing 'get_new_node' methods, so the new obstack contains
442 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
443 Solved some copy'n'paste problems. Deleted most debug-code!
444 Added comments to several files.
447 Fixed bug in _r_ constructors for all four Div operations.
448 Fixed bug in turn_into_tuple: didn't remember the block.
449 Tested transform_node.
452 Fixed some testprograms to new semantics of firm.
453 Added testprogram global_var_example.
454 Fixed a bug in irop: Size of Sel node was (entity *) instead of
455 sel_attr. Therefor array_heap_example aborted.
456 Also found a missing break in typewalk, case iro_Alloc.
457 Added a construct that unifies all things constructed by the lib
458 and needed to represent a program: irprog.ch
459 This contains a list of all types as well as a list of all ir graphs.
460 I added calls to initialization and constructors so that this is constructed
461 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
462 Removed strange block struct and constructor from ircons.c.
463 Moved routines for automatic Phi construction from irgmod to ircons.
464 Sorted functions in ircons to reflect the different interfaces.
465 Renamed dataseg to globals to be conformant with documentation.
466 Added conservation of current_ir_graph to irgopt.c.
467 Corrected bug in Makefiles: wrong path to directory ./inlude.
470 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
471 We should change the naming of the Block constructor.
472 Removed acces routines to attr. "closed" of Block.
473 Removed second implementation of new_ir_node from ircons and some comments
474 concerned with the now resolved cyclic dependency.
475 Fixed some bugs in irgopt so that the compilation goes through.
478 Changed the irnode attribut 'visit' into 'visited'.
479 Added some access functions, like get/set_irn_visit etc.
482 Renamed some access funtion in irgraph.*.
483 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
484 Added two attributes to the irgraph struct. The visited flags belongs
485 to a ir graph, not to a whole program.
488 A new optimization has been finished. The dead-node-elimination copies
489 the existing ir graph from one opstack to another. While walking the
490 graph, only the reachable nodes will be copied, so the "dead-nodes"
491 (unreachable in the controlflow) are removed.
494 Solved some problems in the 'copy_node' function. The in array was not
495 as easy as it seamed.
498 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
499 optimization, which is needed in the paramter list of 'irg_walk'.
502 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
503 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
507 Removed some files from the archive, after dependencies and usage are
509 - 'ir/common/strerror.c'
511 - 'ir/ident/xx_ident.h'
512 an empty file, only included by 'ident.c', but never used;
513 - 'ir/tv/label.c' and
515 contained a numeric counter;
516 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
517 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
518 In the old fiasco compiler, the label thing is used in the backend.
519 Search for 'babil' to see the usage.
520 Also removed the two attributes 'lab' and 'used' in the tarval struct.
523 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
524 afterwards some recursive includes, so libfirm works again.
527 Did a lot of changes, which I never commented until now (4.7.00).
529 * Added new result to Start node: Pointer to global data segment.
530 * Extended Semantics of SymConst node to represent information for the
532 * Added arithmeitc nodes (Shrs, Minus ...)
534 Rearranged the directory structure and adjusted the makefiles.
535 The directories contain:
536 ir: everything for the intermediate representation (better: src?)
537 /ir: the ir itself, and standard optimizations.
538 /tv: the target value module
539 /tr: the type and entity representation
540 /adt: abstract data types
541 /common: stuff needed by all other dirs
542 /debug: debugging Unterstuetzung
544 include: external files needen as includes
545 testprograms: examples to test the lib.
547 The makefiles generate files with extension .d that contain the dependencies
551 Added access routine to attribute link of irnode in irnode.ch.
552 Added get_negated_pnc to irnode.ch.
555 Added an iterator in iropt that calls the optimization for all nodes.
556 Copied optimize's code to optimize_in_place and removed deallocations.
557 Made set_irn_n in irnode.c public.
558 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
559 are allowded as cfgpredecessors to represent dead "incoming" control
561 Added call to optimize_in_place in mature_block. Is this useful?
564 Changed tests from comparing enums to comparing pointers. This is more
565 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
566 now get_irn_op == op_And
569 Compared equivalent_value to the one in the original fiasco.
570 Added a test in case iro_And.
571 Changed implementation of iro_Div. Added routines turn_into_tuple
572 and set_irn_op() in irgmod/irnode.
573 Changed implementation of irn_Minus (although commented out).
574 Now all features are ported or documented for this function.
577 Compared computed_value to the one in the original fiasco.
578 Added one further optimization in case iro_Proj.
579 Now all features are ported for this function.
582 Updated comments in ircons.h.
585 Changed possible attribute of SymConst from type_class to type.
586 SymConst size could be the size of a union, array, ...
589 Implemented two dumpers that dump type information and a graph with
593 Implemented a walker that walks over the type informatin that can
594 be reached from an ir node.
595 Added routine get_kind(firm_thing) in common.h, Added file common.c.
596 Added files typewalk.ch and routines to irdump.
597 Added visited flags and initialization to entity and all types.
598 Implemented some of the missing access routines in type.c, entity.c
601 Implemented constructor for ShrA.
603 Added routine that iterates the graph and verifies all nodes.
604 Added Phi_in stack to irgraph. This allows to build several
605 graphs at once with respect to the Phi building algorithm.
608 Implemented dumper for control flow graphs. Changed irr_* and dead_*
609 examples to dump cfg.
612 Implemeted explicit stack for the Phi node generation. See ircons.c.
615 added include string.h in xoprintf.c to get rid of warning:
616 implicit declaration of function `bcopy'
620 Added more cases to equivalent_node.
621 Portet gigo, identify, identify_remember.
622 The set/pset library can not handle several hash tables. At least,
623 compiling several procedures causes a segmentation fault during access
624 to the tables (oo_program_example). Need to work on this.
625 transform_node still needs to be ported.
626 some cases in equivalent_node are still missing.
628 To get it running I had to remove the call to optimize in the
629 new_Block constructor. It can only be called when the Block is
633 Introduced a walker that walks only over blocks. The asserts
634 might be too strict for general graphs, but so far it works.
635 For the walker I introduced an additional flag in the attribute
636 of Blocks, an a global block_visited variable (in irgraph.h).
637 Furhter I modularized dump_ir_node, implemented dump_ir_graph
638 with the existing walker, and added new routines to output a
640 Changed the examples to call the new dump routine.
643 Added auxiliary routines to ir_node:
644 skip_Proj, skip_Nop, is_Bad ...
645 Changed access routines to use get_irn_n instead of explicit array
646 accesses. Changed get_irn_n to call skip_Id, so that the access routines
647 never will return Id nodes.
650 Repaired Phi computation, changed new_r_Phi_in. Added test program to
651 test irregular controlflow.
654 Updated optimizations computed_value and equivalent_node to new
655 Syntax of FIRM nodes and to use access routines.
656 Added routine skip_Proj in irnode.
658 2.2.2000 Boris Boesler
659 Added files irgwalk.c and irgwalk.h. They include a simple function to
660 traverse an ir graph and execute pre and post functions to current node.
663 Added arrays with parameters and result types to the type informtion
664 of a procedure. This is needed for the code generation. Also added
665 the corresponding access routines.
666 Adapted the testprograms.
669 Found a bug / complication: the call order
670 get_value (makes Phi0, put's it into graph_arr)
671 set_value (overwrites Phi0 in graph_arr)
672 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
674 fails. Added test wether graph_arr is already set in phi_merge.
676 Added tons of comments to explain Phi generation -- the stack hack.
680 irdump now outputs the pnc_number for projs of Cmp nodes.
681 Added routine to access the pnc_string.
684 Added result "dataseg" to Start node, with all it's consequences.
685 We need this for the compiler lab to translate global variables.
686 Now they can be selected from the data segment, and the start
687 node supplies the pointer to this segment.
688 These changes are guarded by preprocessor variable UEBPRAKT in
690 Changed files: common.h, irgraph.ch, irnode.h
694 removed array_example, added array-heap_example and
695 array-stack_example and adapted makefile.
697 Entity now also allows type_method as owner. This is to model
698 the stack, Sel nodes that select a variable (array) from the
699 stack need an entity that describes what they select. This
700 entity gets the type of the enclosing procedure as owner.
703 Added future access routines in `irmode.[ch]' as comments,
704 that all attributes in the ir_mode struct can be user-defined.
705 Added access routines in `irgraph.[ch]', for all attributes.
708 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
709 Added `irvrfy.[ch]' to MAKEFILE
710 Added "inline" before access routines in `irnode.h', that no warnings
711 will appear furthermore.
712 Added three more access routines in `irmode.[ch]':
713 struct tarval *get_min_of_mode (ir_mode *mode);
714 struct tarval *get_max_of_mode (ir_mode *mode);
715 struct tarval *get_null_of_mode (ir_mode *mode);
718 Adaption of Alloc, Sel and Entity to new types:
719 Changed array_example to use type instead of type_class.
720 Changed entity to allow all types as owner instead of
721 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
722 Changed alloc to allow allocating variables of any type instead of
724 Adapted all testprograms to avoid warnings.
726 removed dtest ... from Makefile, replaced by test.
729 Added "run" to makefile, added array_example to makefile of testprograms.
730 Corrected testprogram array
731 Changed assert in irvrfy -- Conv.
projects / libfirm / blob