2 Bugfix Optmierung Binops mit mode Tupel.
5 irgopt: inline_small_irgs implemented
8 Bugfixes, some access functions ...
11 New directory: ana for analyses. Adapted configure/makefiles
12 implemented irout: backedges. Added one field to ir_graph, one to ir_node.
13 Implemented state management for irgraphs: see irgraph.h.
14 Must now call finalize_cons() after graph construction!!
18 Flag pinned in irop, irgraph.
19 Global cse in irop, setting the irgraph flag.
20 Example programs: Endless_loop.c. global_cse.c.
24 Implemented support for endless loops:
26 Adapted Phi constructors so that memory phis are added.
27 Adapted Cond optimization: add block to End.
28 Adapted dead node elimination: compation of Ends predecessors
29 Adapted inlineing: remember keepalives of inlined graph.
30 Added informative strings to asserts in irvrfy.
33 Added volatile flag to entity, order flag to array.
34 Added a set of assertions.
37 Added access function set_class_members()
40 Asserts in irvrfy that verify the mode of Proj nodes. For Start,
41 Call, Return they check the corresponding function type! Corrected
43 Some asserts for legal values of 'pos' arguments in type/entity
47 Some access routines for visited flags in entity.h, irnode.h,
48 bug in oo_program_example.
51 Removed all obsolete Makefiles
54 Added support for constant entities. A new example program illustrates
55 their use. Extended dumper routines to dump constant values.
58 Extendend "comfortable" construction interface by some methods
59 serving as simple shortcuts.
62 Added a class type to irgs. This class type is to be used as owner
63 for local entities of the procedure. This are all entities allocated
64 for each execution of the procedure.
65 The class type is allocated automatically by new_ir_graph(). Access
66 routines to get this type are in irgraph.h.
67 We chose a class type as this allows to represent "inner" procedures
69 Adapted array-stack-example.
72 irdump outputs nodeids instead of pointers for labels of nodes.
73 With a preprocessor flag in common.h this can be turned off.
76 Added an Id tag to every .c and .h file
79 Changed SSA constuction for exception control flow.
80 If PRECISE_EXC_CONTEXT is used Phi nodes will use the values
81 valid when the execption operation was allocated. This increases
82 the memory consuption of the construction algorithm by
86 Added method to replace in array of a node in irnode.c/h
87 Added functionality to irgmod:
88 * collect all Phi nodes as link-list in the Blocks link field
89 * collect all Proj nodes as link-list in node producing the tuple.
90 * Seperate a Block into two
91 Added inlining transformation in irgopt.h
92 Improved output of dump_ir_block_graph. Now also dumps nodes that
93 don't belong to a block.
94 Added flag opt_unreachable_code, opt_inline.
95 Changed irvrfy so that it accepts nodes with Bad predecessors.
98 renamed get_type_nameid to get_type_ident
101 Bugfix: dead node elimination did not replace the hash table
105 Added routine remove_irp_irg.
106 Changed comment to free_ir_graph.
109 Added routine to free irgraphs.
112 Improved add routines to sub, supertype in type.c
115 Added implementation of overwrites stuff.
118 Implemented stuff to change the type graph. See
119 typegmod.h and tpop.h for basic documentation of the change.
120 There now exists a type of kind type_id. If this appears
121 externally this is a bug.
124 Added some new access routines to types.
125 List of overwritten fields for entities.
126 Removed a bug in irnode.
129 Added a routine to set the mangled entity name.
130 Added two routines to copy entites.
133 Entities now have two more flags, for visibility and allocation mode.
134 Types that have a layout have a flag indicating whether the layout is
138 We distinguish three kinds of Cond nodes. These can be distinguished
139 by the mode of the selector operand and an internal flag of type cond_kind.
140 First we distinguish binary Conds and switch Conds.
141 A binary Cond has as selector a boolean value. Proj(0) projects the control
142 flow for case "False", Proj(1) the control flow for "True". A binary Cond
143 is recognized by the boolean selector.
144 The switch Cond has as selector an unsigned integer. It produces as result
145 an n+1 Tuple (cf0, ... , cfn) of control flows.
146 We differ two flavours of this Cond. The first, the dense Cond, passes
147 control along output i if the selector value is i, 0 <= i <= n. If the
148 selector value is >n it passes control along output n.
149 The second Cond flavor differes in the treatment of cases not specified in
150 the source program. It magically knows about the existence of Proj nodes.
151 It only passes control along output i, 0 <= i <= n, if a node Proj(Cond, i)
152 exists. Else it passes control along output n (even if this Proj does not
153 exist.) This Cond we call "fragmentary". There is a special constructor
154 new_defaultProj that automatically sets the flavor.
155 The two switch flavors are distinguished by a flag of type cond_kind.
156 Default flavor is "dense"
160 tv now implements Minus, Abs.
161 iropt now optimizes these and Div, Mod, Quot, DivMod.
162 Still missing: Shrs, Rot.
163 tarval_shr somtimes performs shrs, depending on the compiler/system!!
164 If the ArmRoq implementation is faulty there might appear errors.
167 Changed ircons: If undefined values are used the Phi construction
168 inserts a constant with value tarval_bad.
171 Changed array bounds in type.h to ir_node*. This allows to
172 construct array bounds that are complex constant expressions
173 simpler. Further dynamic array bounds can be displayed.
174 Comment in ircons.c extended: undefined values in start_block.
177 ifdef'ed all uses of gmp in tv.c away. Optimizations for
178 mode_Z no more supported, as well as constants of that mode.
181 Dokumentation in ir_dump
182 Habe Routinen fuer einzelne Knoten/Kanten aus header entfernt:
183 Benutzen globale Variable die nicht oeffentlich zugaenglich ist.
186 We need an entity for the array elements for the Sel nodes. This
187 entity should be stored in the array type. Changed constructor
188 parameters: include array element type. Entity for elements is built
193 Faulty use of va_arg, became visible with new, stricter gcc 2.96.
196 Added list of member entites to union. unioned_types and delimiters
197 are superfluous now -- removed.
198 Rationale: we want to express selection of a union member as a Sel
199 node. for this we need to have entities. The entities contain the
200 unioned type and have as name the delimiters...
203 Changed Makefile/MakeTargets to install headers and libraries
207 Changed Makefile and Configure scripts to produce a proper tar file
208 for distribution (libfirm-VERSION.tar)
209 Use 'make distrib' instead of 'make dist'
212 Changed implementation of tr module. With this I also changed the
213 interface!! Type casts are unnecessary now, but some access funcions
217 ======================================================================
218 ==================== New version: 0.3.0 ==============================
219 ======================================================================
225 added creation of a tar archive for distribution
226 replaced ir/.dummy.in by ir/Makefile.in
229 Changed equivalent_node() and copy_preds() so that the end block
230 is not optimized away if it has no real predecessors. This fixes
231 the problem with the while examples.
232 Added while_example in Makefile
235 Fooled around with if_while_example: Why does cse make it abort?
236 Cse removes path to End node, Bad remains as pred of Endblock.
237 The block walker can't deal with this.
238 Made new example with only loop: while_example.
241 added auto documentation in Makefiles, configure, etc
242 example in ir/ir/ircons.c - much must be added
243 creation of documentation by 'make autodoc' in architecture directory
246 added lots of #ifdef HAVE_CONFIG_G #include "config.h" #endif
247 replaced some C++ style comments (//) by standard C comments /**/
250 - configure (with some features, see --help for more)
251 - make [depend | tags | install]
252 - make [run] in testprograms
254 - compilation on SunOS
256 - automatic call of autoconf if required
259 More colours in vcg output.
260 Fixed bug: cse found that start block equals it's
261 first successor as both have the Start block as predecessor.
262 This only happens for local_optimize_graph() as during construction
263 the Start block is not entered in the value table.
264 Changed implementation: irgmod: local_optimize_graph() did not
265 empty the hash table with the irnodes for cse. This might cause that
266 cse turns up with a node that seems better but was removed from the
267 graph in an earlier optimization phase.
268 Removed old #if 1 from ircons.c
269 Commented in call of optimization for Block nodes in irgopt.c, copy_preds():
270 Optimizes blocks that had bad predecessors.
275 Moved struct from irprog.h to irprog_t.h, same for irmode.h.
276 Added a module deb_info in debug.h. Adapted makefile. Added example
278 Removed use of debug.h in ident.c. Now debug.c|h can be moved to
280 Removed inabled code for dead node elimination in irgopt.h.
281 Renamed some missnamed access routines (_of_). Macros with old names
282 are in old_fctnames.h.
283 Edited makefiles to remove #* and *.flc.
286 Some minor bugfixes...
289 After compacting of in arrays in dead_node_elimination
290 merge blocks and remove Phis with one pred.
293 Freeing of obstack in dead_node_elimination commented in.
294 Compacting in arrays of Block and Phi nodes in dead_node_
299 added set/get_SymConst_type_or_id in irnode.h
300 added field offset to entity in entity.h
301 added field size to type_class in type.h
302 include "gmp.h" in tv.h with "" instead <>
305 Some changes to make the lib better portable
308 Initialize max_node_nr in irprog.
311 Now outputs warning if faulty type in irdump, dump_type_info.
312 Explicit string termination in irdump, vcg_open.
315 Added external to declaration of irp.
316 Added typedef before pns and pnc_number.
317 irmode.c, init_mode(): We need to memset all new modes as
318 tarval_vrfy reads fields before they are initialized: It
319 compares to min/max when tarvals for min/max are allocated!
322 Changed parameter of Methods in type.h and type.c from
323 class to clss. Class is a C++ keyword.
326 Changed some testprograms to accomodate Uebprakt.
329 Finished implementation of dump_all_types.
330 Added new testprogram inheritance_example.
333 Added seven access routines in type.[hc]:
334 get_class_n_member, get_class_n_subtype, get_class_n_supertype,
335 get_strct_n_member, add_strct_member, get_strct_member and set_strct_member.
336 Fixed the type_walk_2 for those seven routines.
339 Added irdump routine dump_all_types.
340 Did changes to irprog, type, typewalk to achieve this.
341 typewalk needs to walk along members, sub and supertypes, this
342 is still missing! irdump then needs to output these edges.
344 ======================================================================
345 ==================== New version: 0.2.5 ==============================
346 ======================================================================
349 Made new Version: 0.2.5
351 15.8.2000 Goetz until 3.9.00
352 Separated irnode.h and many others into two files: one public
354 Added funcionality to extract headers for lib.
357 type_dump also dumps irg->ent
358 if_example: corrected nr of locals
361 irgopt: Correct copy of self pointer in start block.
362 irgopt: Correct treatment of loops: pre function in walker
363 breaks all possible loops in Phi and Block nodes.
364 irr_loop_example: wrong Return statement
365 Now I fixed all but one error: in memory_example.
366 This error showed a conceptual problem, so I wrote
367 a slightly different algorithm. This now runs for
369 dead_node_example: cse is buggy!! merges start and the
373 looking at bug in dead_node_elimination.
375 irnode: all get_..._arr functions changed
376 ircons: new_r_Block: set matured flag.
377 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
378 adapted call_str_example to new concepts.
381 Implemented simpler Phi construction algorithm that constructs
382 correct code for three_cfpred_example in ircons. This algorithm
383 generates more Id nodes than the original algorithm and therefore
385 Also made some changes to optimizations of Not.
388 Fixed a bug, caused by the recursive use in type.h and entity.h.
389 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
390 Fixed a problem in if_while testprogram, so it now works.
393 Fixed bug in optimize(). Returned Null instead n if
394 get_optimize() == false.
397 Added some access routines in type.[hc]. Solved a recursive definition
398 of type_class struct, entity struct and type union.
401 Separated entity header into pure functional header and header
405 ... a bunch small changes not documented
408 Changed output of oo_prog_example: now uses the internal list
409 of all irgs. Had to implement some of the access routines for
410 that. Also fixed a bug in irdump. Main routines did not use
411 current_ir_graph properly.
414 Implemented some missing parts in irgopt.
415 Added field irg to entity. Only valid if entity is a method.
416 Had to resove a cyclic de[endency between irgraph.h and entity.h
418 Added fields sub and super to type_class for inheritance.
419 Added field main_irg to irprog.
422 Fixed some bugs in irgopt.c
423 Added some missing 'get_new_node' methods, so the new obstack contains
427 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
428 Solved some copy'n'paste problems. Deleted most debug-code!
429 Added comments to several files.
432 Fixed bug in _r_ constructors for all four Div operations.
433 Fixed bug in turn_into_tuple: didn't remember the block.
434 Tested transform_node.
437 Fixed some testprograms to new semantics of firm.
438 Added testprogram global_var_example.
439 Fixed a bug in irop: Size of Sel node was (entity *) instead of
440 sel_attr. Therefor array_heap_example aborted.
441 Also found a missing break in typewalk, case iro_Alloc.
442 Added a construct that unifies all things constructed by the lib
443 and needed to represent a program: irprog.ch
444 This contains a list of all types as well as a list of all ir graphs.
445 I added calls to initialization and constructors so that this is constructed
446 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
447 Removed strange block struct and constructor from ircons.c.
448 Moved routines for automatic Phi construction from irgmod to ircons.
449 Sorted functions in ircons to reflect the different interfaces.
450 Renamed dataseg to globals to be conformant with documentation.
451 Added conservation of current_ir_graph to irgopt.c.
452 Corrected bug in Makefiles: wrong path to directory ./inlude.
455 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
456 We should change the naming of the Block constructor.
457 Removed acces routines to attr. "closed" of Block.
458 Removed second implementation of new_ir_node from ircons and some comments
459 concerned with the now resolved cyclic dependency.
460 Fixed some bugs in irgopt so that the compilation goes through.
463 Changed the irnode attribut 'visit' into 'visited'.
464 Added some access functions, like get/set_irn_visit etc.
467 Renamed some access funtion in irgraph.*.
468 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
469 Added two attributes to the irgraph struct. The visited flags belongs
470 to a ir graph, not to a whole program.
473 A new optimization has been finished. The dead-node-elimination copies
474 the existing ir graph from one opstack to another. While walking the
475 graph, only the reachable nodes will be copied, so the "dead-nodes"
476 (unreachable in the controlflow) are removed.
479 Solved some problems in the 'copy_node' function. The in array was not
480 as easy as it seamed.
483 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
484 optimization, which is needed in the paramter list of 'irg_walk'.
487 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
488 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
492 Removed some files from the archive, after dependencies and usage are
494 - 'ir/common/strerror.c'
496 - 'ir/ident/xx_ident.h'
497 an empty file, only included by 'ident.c', but never used;
498 - 'ir/tv/label.c' and
500 contained a numeric counter;
501 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
502 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
503 In the old fiasco compiler, the label thing is used in the backend.
504 Search for 'babil' to see the usage.
505 Also removed the two attributes 'lab' and 'used' in the tarval struct.
508 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
509 afterwards some recursive includes, so libfirm works again.
512 Did a lot of changes, which I never commented until now (4.7.00).
514 * Added new result to Start node: Pointer to global data segment.
515 * Extended Semantics of SymConst node to represent information for the
517 * Added arithmeitc nodes (Shrs, Minus ...)
519 Rearranged the directory structure and adjusted the makefiles.
520 The directories contain:
521 ir: everything for the intermediate representation (better: src?)
522 /ir: the ir itself, and standard optimizations.
523 /tv: the target value module
524 /tr: the type and entity representation
525 /adt: abstract data types
526 /common: stuff needed by all other dirs
527 /debug: debugging Unterstuetzung
529 include: external files needen as includes
530 testprograms: examples to test the lib.
532 The makefiles generate files with extension .d that contain the dependencies
536 Added access routine to attribute link of irnode in irnode.ch.
537 Added get_negated_pnc to irnode.ch.
540 Added an iterator in iropt that calls the optimization for all nodes.
541 Copied optimize's code to optimize_in_place and removed deallocations.
542 Made set_irn_n in irnode.c public.
543 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
544 are allowded as cfgpredecessors to represent dead "incoming" control
546 Added call to optimize_in_place in mature_block. Is this useful?
549 Changed tests from comparing enums to comparing pointers. This is more
550 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
551 now get_irn_op == op_And
554 Compared equivalent_value to the one in the original fiasco.
555 Added a test in case iro_And.
556 Changed implementation of iro_Div. Added routines turn_into_tuple
557 and set_irn_op() in irgmod/irnode.
558 Changed implementation of irn_Minus (although commented out).
559 Now all features are ported or documented for this function.
562 Compared computed_value to the one in the original fiasco.
563 Added one further optimization in case iro_Proj.
564 Now all features are ported for this function.
567 Updated comments in ircons.h.
570 Changed possible attribute of SymConst from type_class to type.
571 SymConst size could be the size of a union, array, ...
574 Implemented two dumpers that dump type information and a graph with
578 Implemented a walker that walks over the type informatin that can
579 be reached from an ir node.
580 Added routine get_kind(firm_thing) in common.h, Added file common.c.
581 Added files typewalk.ch and routines to irdump.
582 Added visited flags and initialization to entity and all types.
583 Implemented some of the missing access routines in type.c, entity.c
586 Implemented constructor for ShrA.
588 Added routine that iterates the graph and verifies all nodes.
589 Added Phi_in stack to irgraph. This allows to build several
590 graphs at once with respect to the Phi building algorithm.
593 Implemented dumper for control flow graphs. Changed irr_* and dead_*
594 examples to dump cfg.
597 Implemeted explicit stack for the Phi node generation. See ircons.c.
600 added include string.h in xoprintf.c to get rid of warning:
601 implicit declaration of function `bcopy'
605 Added more cases to equivalent_node.
606 Portet gigo, identify, identify_remember.
607 The set/pset library can not handle several hash tables. At least,
608 compiling several procedures causes a segmentation fault during access
609 to the tables (oo_program_example). Need to work on this.
610 transform_node still needs to be ported.
611 some cases in equivalent_node are still missing.
613 To get it running I had to remove the call to optimize in the
614 new_Block constructor. It can only be called when the Block is
618 Introduced a walker that walks only over blocks. The asserts
619 might be too strict for general graphs, but so far it works.
620 For the walker I introduced an additional flag in the attribute
621 of Blocks, an a global block_visited variable (in irgraph.h).
622 Furhter I modularized dump_ir_node, implemented dump_ir_graph
623 with the existing walker, and added new routines to output a
625 Changed the examples to call the new dump routine.
628 Added auxiliary routines to ir_node:
629 skip_Proj, skip_Nop, is_Bad ...
630 Changed access routines to use get_irn_n instead of explicit array
631 accesses. Changed get_irn_n to call skip_Id, so that the access routines
632 never will return Id nodes.
635 Repaired Phi computation, changed new_r_Phi_in. Added test program to
636 test irregular controlflow.
639 Updated optimizations computed_value and equivalent_node to new
640 Syntax of FIRM nodes and to use access routines.
641 Added routine skip_Proj in irnode.
643 2.2.2000 Boris Boesler
644 Added files irgwalk.c and irgwalk.h. They include a simple function to
645 traverse an ir graph and execute pre and post functions to current node.
648 Added arrays with parameters and result types to the type informtion
649 of a procedure. This is needed for the code generation. Also added
650 the corresponding access routines.
651 Adapted the testprograms.
654 Found a bug / complication: the call order
655 get_value (makes Phi0, put's it into graph_arr)
656 set_value (overwrites Phi0 in graph_arr)
657 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
659 fails. Added test wether graph_arr is already set in phi_merge.
661 Added tons of comments to explain Phi generation -- the stack hack.
665 irdump now outputs the pnc_number for projs of Cmp nodes.
666 Added routine to access the pnc_string.
669 Added result "dataseg" to Start node, with all it's consequences.
670 We need this for the compiler lab to translate global variables.
671 Now they can be selected from the data segment, and the start
672 node supplies the pointer to this segment.
673 These changes are guarded by preprocessor variable UEBPRAKT in
675 Changed files: common.h, irgraph.ch, irnode.h
679 removed array_example, added array-heap_example and
680 array-stack_example and adapted makefile.
682 Entity now also allows type_method as owner. This is to model
683 the stack, Sel nodes that select a variable (array) from the
684 stack need an entity that describes what they select. This
685 entity gets the type of the enclosing procedure as owner.
688 Added future access routines in `irmode.[ch]' as comments,
689 that all attributes in the ir_mode struct can be user-defined.
690 Added access routines in `irgraph.[ch]', for all attributes.
693 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
694 Added `irvrfy.[ch]' to MAKEFILE
695 Added "inline" before access routines in `irnode.h', that no warnings
696 will appear furthermore.
697 Added three more access routines in `irmode.[ch]':
698 struct tarval *get_min_of_mode (ir_mode *mode);
699 struct tarval *get_max_of_mode (ir_mode *mode);
700 struct tarval *get_null_of_mode (ir_mode *mode);
703 Adaption of Alloc, Sel and Entity to new types:
704 Changed array_example to use type instead of type_class.
705 Changed entity to allow all types as owner instead of
706 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
707 Changed alloc to allow allocating variables of any type instead of
709 Adapted all testprograms to avoid warnings.
711 removed dtest ... from Makefile, replaced by test.
714 Added "run" to makefile, added array_example to makefile of testprograms.
715 Corrected testprogram array
716 Changed assert in irvrfy -- Conv.
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