3 irgopt: inline_small_irgs implemented
6 Bugfixes, some access functions ...
9 New directory: ana for analyses. Adapted configure/makefiles
10 implemented irout: backedges. Added one field to ir_graph, one to ir_node.
11 Implemented state management for irgraphs: see irgraph.h.
12 Must now call finalize_cons() after graph construction!!
16 Flag pinned in irop, irgraph.
17 Global cse in irop, setting the irgraph flag.
18 Example programs: Endless_loop.c. global_cse.c.
22 Implemented support for endless loops:
24 Adapted Phi constructors so that memory phis are added.
25 Adapted Cond optimization: add block to End.
26 Adapted dead node elimination: compation of Ends predecessors
27 Adapted inlineing: remember keepalives of inlined graph.
28 Added informative strings to asserts in irvrfy.
31 Added volatile flag to entity, order flag to array.
32 Added a set of assertions.
35 Added access function set_class_members()
38 Asserts in irvrfy that verify the mode of Proj nodes. For Start,
39 Call, Return they check the corresponding function type! Corrected
41 Some asserts for legal values of 'pos' arguments in type/entity
45 Some access routines for visited flags in entity.h, irnode.h,
46 bug in oo_program_example.
49 Removed all obsolete Makefiles
52 Added support for constant entities. A new example program illustrates
53 their use. Extended dumper routines to dump constant values.
56 Extendend "comfortable" construction interface by some methods
57 serving as simple shortcuts.
60 Added a class type to irgs. This class type is to be used as owner
61 for local entities of the procedure. This are all entities allocated
62 for each execution of the procedure.
63 The class type is allocated automatically by new_ir_graph(). Access
64 routines to get this type are in irgraph.h.
65 We chose a class type as this allows to represent "inner" procedures
67 Adapted array-stack-example.
70 irdump outputs nodeids instead of pointers for labels of nodes.
71 With a preprocessor flag in common.h this can be turned off.
74 Added an Id tag to every .c and .h file
77 Changed SSA constuction for exception control flow.
78 If PRECISE_EXC_CONTEXT is used Phi nodes will use the values
79 valid when the execption operation was allocated. This increases
80 the memory consuption of the construction algorithm by
84 Added method to replace in array of a node in irnode.c/h
85 Added functionality to irgmod:
86 * collect all Phi nodes as link-list in the Blocks link field
87 * collect all Proj nodes as link-list in node producing the tuple.
88 * Seperate a Block into two
89 Added inlining transformation in irgopt.h
90 Improved output of dump_ir_block_graph. Now also dumps nodes that
91 don't belong to a block.
92 Added flag opt_unreachable_code, opt_inline.
93 Changed irvrfy so that it accepts nodes with Bad predecessors.
96 renamed get_type_nameid to get_type_ident
99 Bugfix: dead node elimination did not replace the hash table
103 Added routine remove_irp_irg.
104 Changed comment to free_ir_graph.
107 Added routine to free irgraphs.
110 Improved add routines to sub, supertype in type.c
113 Added implementation of overwrites stuff.
116 Implemented stuff to change the type graph. See
117 typegmod.h and tpop.h for basic documentation of the change.
118 There now exists a type of kind type_id. If this appears
119 externally this is a bug.
122 Added some new access routines to types.
123 List of overwritten fields for entities.
124 Removed a bug in irnode.
127 Added a routine to set the mangled entity name.
128 Added two routines to copy entites.
131 Entities now have two more flags, for visibility and allocation mode.
132 Types that have a layout have a flag indicating whether the layout is
136 We distinguish three kinds of Cond nodes. These can be distinguished
137 by the mode of the selector operand and an internal flag of type cond_kind.
138 First we distinguish binary Conds and switch Conds.
139 A binary Cond has as selector a boolean value. Proj(0) projects the control
140 flow for case "False", Proj(1) the control flow for "True". A binary Cond
141 is recognized by the boolean selector.
142 The switch Cond has as selector an unsigned integer. It produces as result
143 an n+1 Tuple (cf0, ... , cfn) of control flows.
144 We differ two flavours of this Cond. The first, the dense Cond, passes
145 control along output i if the selector value is i, 0 <= i <= n. If the
146 selector value is >n it passes control along output n.
147 The second Cond flavor differes in the treatment of cases not specified in
148 the source program. It magically knows about the existence of Proj nodes.
149 It only passes control along output i, 0 <= i <= n, if a node Proj(Cond, i)
150 exists. Else it passes control along output n (even if this Proj does not
151 exist.) This Cond we call "fragmentary". There is a special constructor
152 new_defaultProj that automatically sets the flavor.
153 The two switch flavors are distinguished by a flag of type cond_kind.
154 Default flavor is "dense"
158 tv now implements Minus, Abs.
159 iropt now optimizes these and Div, Mod, Quot, DivMod.
160 Still missing: Shrs, Rot.
161 tarval_shr somtimes performs shrs, depending on the compiler/system!!
162 If the ArmRoq implementation is faulty there might appear errors.
165 Changed ircons: If undefined values are used the Phi construction
166 inserts a constant with value tarval_bad.
169 Changed array bounds in type.h to ir_node*. This allows to
170 construct array bounds that are complex constant expressions
171 simpler. Further dynamic array bounds can be displayed.
172 Comment in ircons.c extended: undefined values in start_block.
175 ifdef'ed all uses of gmp in tv.c away. Optimizations for
176 mode_Z no more supported, as well as constants of that mode.
179 Dokumentation in ir_dump
180 Habe Routinen fuer einzelne Knoten/Kanten aus header entfernt:
181 Benutzen globale Variable die nicht oeffentlich zugaenglich ist.
184 We need an entity for the array elements for the Sel nodes. This
185 entity should be stored in the array type. Changed constructor
186 parameters: include array element type. Entity for elements is built
191 Faulty use of va_arg, became visible with new, stricter gcc 2.96.
194 Added list of member entites to union. unioned_types and delimiters
195 are superfluous now -- removed.
196 Rationale: we want to express selection of a union member as a Sel
197 node. for this we need to have entities. The entities contain the
198 unioned type and have as name the delimiters...
201 Changed Makefile/MakeTargets to install headers and libraries
205 Changed Makefile and Configure scripts to produce a proper tar file
206 for distribution (libfirm-VERSION.tar)
207 Use 'make distrib' instead of 'make dist'
210 Changed implementation of tr module. With this I also changed the
211 interface!! Type casts are unnecessary now, but some access funcions
215 ======================================================================
216 ==================== New version: 0.3.0 ==============================
217 ======================================================================
223 added creation of a tar archive for distribution
224 replaced ir/.dummy.in by ir/Makefile.in
227 Changed equivalent_node() and copy_preds() so that the end block
228 is not optimized away if it has no real predecessors. This fixes
229 the problem with the while examples.
230 Added while_example in Makefile
233 Fooled around with if_while_example: Why does cse make it abort?
234 Cse removes path to End node, Bad remains as pred of Endblock.
235 The block walker can't deal with this.
236 Made new example with only loop: while_example.
239 added auto documentation in Makefiles, configure, etc
240 example in ir/ir/ircons.c - much must be added
241 creation of documentation by 'make autodoc' in architecture directory
244 added lots of #ifdef HAVE_CONFIG_G #include "config.h" #endif
245 replaced some C++ style comments (//) by standard C comments /**/
248 - configure (with some features, see --help for more)
249 - make [depend | tags | install]
250 - make [run] in testprograms
252 - compilation on SunOS
254 - automatic call of autoconf if required
257 More colours in vcg output.
258 Fixed bug: cse found that start block equals it's
259 first successor as both have the Start block as predecessor.
260 This only happens for local_optimize_graph() as during construction
261 the Start block is not entered in the value table.
262 Changed implementation: irgmod: local_optimize_graph() did not
263 empty the hash table with the irnodes for cse. This might cause that
264 cse turns up with a node that seems better but was removed from the
265 graph in an earlier optimization phase.
266 Removed old #if 1 from ircons.c
267 Commented in call of optimization for Block nodes in irgopt.c, copy_preds():
268 Optimizes blocks that had bad predecessors.
273 Moved struct from irprog.h to irprog_t.h, same for irmode.h.
274 Added a module deb_info in debug.h. Adapted makefile. Added example
276 Removed use of debug.h in ident.c. Now debug.c|h can be moved to
278 Removed inabled code for dead node elimination in irgopt.h.
279 Renamed some missnamed access routines (_of_). Macros with old names
280 are in old_fctnames.h.
281 Edited makefiles to remove #* and *.flc.
284 Some minor bugfixes...
287 After compacting of in arrays in dead_node_elimination
288 merge blocks and remove Phis with one pred.
291 Freeing of obstack in dead_node_elimination commented in.
292 Compacting in arrays of Block and Phi nodes in dead_node_
297 added set/get_SymConst_type_or_id in irnode.h
298 added field offset to entity in entity.h
299 added field size to type_class in type.h
300 include "gmp.h" in tv.h with "" instead <>
303 Some changes to make the lib better portable
306 Initialize max_node_nr in irprog.
309 Now outputs warning if faulty type in irdump, dump_type_info.
310 Explicit string termination in irdump, vcg_open.
313 Added external to declaration of irp.
314 Added typedef before pns and pnc_number.
315 irmode.c, init_mode(): We need to memset all new modes as
316 tarval_vrfy reads fields before they are initialized: It
317 compares to min/max when tarvals for min/max are allocated!
320 Changed parameter of Methods in type.h and type.c from
321 class to clss. Class is a C++ keyword.
324 Changed some testprograms to accomodate Uebprakt.
327 Finished implementation of dump_all_types.
328 Added new testprogram inheritance_example.
331 Added seven access routines in type.[hc]:
332 get_class_n_member, get_class_n_subtype, get_class_n_supertype,
333 get_strct_n_member, add_strct_member, get_strct_member and set_strct_member.
334 Fixed the type_walk_2 for those seven routines.
337 Added irdump routine dump_all_types.
338 Did changes to irprog, type, typewalk to achieve this.
339 typewalk needs to walk along members, sub and supertypes, this
340 is still missing! irdump then needs to output these edges.
342 ======================================================================
343 ==================== New version: 0.2.5 ==============================
344 ======================================================================
347 Made new Version: 0.2.5
349 15.8.2000 Goetz until 3.9.00
350 Separated irnode.h and many others into two files: one public
352 Added funcionality to extract headers for lib.
355 type_dump also dumps irg->ent
356 if_example: corrected nr of locals
359 irgopt: Correct copy of self pointer in start block.
360 irgopt: Correct treatment of loops: pre function in walker
361 breaks all possible loops in Phi and Block nodes.
362 irr_loop_example: wrong Return statement
363 Now I fixed all but one error: in memory_example.
364 This error showed a conceptual problem, so I wrote
365 a slightly different algorithm. This now runs for
367 dead_node_example: cse is buggy!! merges start and the
371 looking at bug in dead_node_elimination.
373 irnode: all get_..._arr functions changed
374 ircons: new_r_Block: set matured flag.
375 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
376 adapted call_str_example to new concepts.
379 Implemented simpler Phi construction algorithm that constructs
380 correct code for three_cfpred_example in ircons. This algorithm
381 generates more Id nodes than the original algorithm and therefore
383 Also made some changes to optimizations of Not.
386 Fixed a bug, caused by the recursive use in type.h and entity.h.
387 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
388 Fixed a problem in if_while testprogram, so it now works.
391 Fixed bug in optimize(). Returned Null instead n if
392 get_optimize() == false.
395 Added some access routines in type.[hc]. Solved a recursive definition
396 of type_class struct, entity struct and type union.
399 Separated entity header into pure functional header and header
403 ... a bunch small changes not documented
406 Changed output of oo_prog_example: now uses the internal list
407 of all irgs. Had to implement some of the access routines for
408 that. Also fixed a bug in irdump. Main routines did not use
409 current_ir_graph properly.
412 Implemented some missing parts in irgopt.
413 Added field irg to entity. Only valid if entity is a method.
414 Had to resove a cyclic de[endency between irgraph.h and entity.h
416 Added fields sub and super to type_class for inheritance.
417 Added field main_irg to irprog.
420 Fixed some bugs in irgopt.c
421 Added some missing 'get_new_node' methods, so the new obstack contains
425 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
426 Solved some copy'n'paste problems. Deleted most debug-code!
427 Added comments to several files.
430 Fixed bug in _r_ constructors for all four Div operations.
431 Fixed bug in turn_into_tuple: didn't remember the block.
432 Tested transform_node.
435 Fixed some testprograms to new semantics of firm.
436 Added testprogram global_var_example.
437 Fixed a bug in irop: Size of Sel node was (entity *) instead of
438 sel_attr. Therefor array_heap_example aborted.
439 Also found a missing break in typewalk, case iro_Alloc.
440 Added a construct that unifies all things constructed by the lib
441 and needed to represent a program: irprog.ch
442 This contains a list of all types as well as a list of all ir graphs.
443 I added calls to initialization and constructors so that this is constructed
444 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
445 Removed strange block struct and constructor from ircons.c.
446 Moved routines for automatic Phi construction from irgmod to ircons.
447 Sorted functions in ircons to reflect the different interfaces.
448 Renamed dataseg to globals to be conformant with documentation.
449 Added conservation of current_ir_graph to irgopt.c.
450 Corrected bug in Makefiles: wrong path to directory ./inlude.
453 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
454 We should change the naming of the Block constructor.
455 Removed acces routines to attr. "closed" of Block.
456 Removed second implementation of new_ir_node from ircons and some comments
457 concerned with the now resolved cyclic dependency.
458 Fixed some bugs in irgopt so that the compilation goes through.
461 Changed the irnode attribut 'visit' into 'visited'.
462 Added some access functions, like get/set_irn_visit etc.
465 Renamed some access funtion in irgraph.*.
466 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
467 Added two attributes to the irgraph struct. The visited flags belongs
468 to a ir graph, not to a whole program.
471 A new optimization has been finished. The dead-node-elimination copies
472 the existing ir graph from one opstack to another. While walking the
473 graph, only the reachable nodes will be copied, so the "dead-nodes"
474 (unreachable in the controlflow) are removed.
477 Solved some problems in the 'copy_node' function. The in array was not
478 as easy as it seamed.
481 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
482 optimization, which is needed in the paramter list of 'irg_walk'.
485 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
486 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
490 Removed some files from the archive, after dependencies and usage are
492 - 'ir/common/strerror.c'
494 - 'ir/ident/xx_ident.h'
495 an empty file, only included by 'ident.c', but never used;
496 - 'ir/tv/label.c' and
498 contained a numeric counter;
499 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
500 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
501 In the old fiasco compiler, the label thing is used in the backend.
502 Search for 'babil' to see the usage.
503 Also removed the two attributes 'lab' and 'used' in the tarval struct.
506 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
507 afterwards some recursive includes, so libfirm works again.
510 Did a lot of changes, which I never commented until now (4.7.00).
512 * Added new result to Start node: Pointer to global data segment.
513 * Extended Semantics of SymConst node to represent information for the
515 * Added arithmeitc nodes (Shrs, Minus ...)
517 Rearranged the directory structure and adjusted the makefiles.
518 The directories contain:
519 ir: everything for the intermediate representation (better: src?)
520 /ir: the ir itself, and standard optimizations.
521 /tv: the target value module
522 /tr: the type and entity representation
523 /adt: abstract data types
524 /common: stuff needed by all other dirs
525 /debug: debugging Unterstuetzung
527 include: external files needen as includes
528 testprograms: examples to test the lib.
530 The makefiles generate files with extension .d that contain the dependencies
534 Added access routine to attribute link of irnode in irnode.ch.
535 Added get_negated_pnc to irnode.ch.
538 Added an iterator in iropt that calls the optimization for all nodes.
539 Copied optimize's code to optimize_in_place and removed deallocations.
540 Made set_irn_n in irnode.c public.
541 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
542 are allowded as cfgpredecessors to represent dead "incoming" control
544 Added call to optimize_in_place in mature_block. Is this useful?
547 Changed tests from comparing enums to comparing pointers. This is more
548 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
549 now get_irn_op == op_And
552 Compared equivalent_value to the one in the original fiasco.
553 Added a test in case iro_And.
554 Changed implementation of iro_Div. Added routines turn_into_tuple
555 and set_irn_op() in irgmod/irnode.
556 Changed implementation of irn_Minus (although commented out).
557 Now all features are ported or documented for this function.
560 Compared computed_value to the one in the original fiasco.
561 Added one further optimization in case iro_Proj.
562 Now all features are ported for this function.
565 Updated comments in ircons.h.
568 Changed possible attribute of SymConst from type_class to type.
569 SymConst size could be the size of a union, array, ...
572 Implemented two dumpers that dump type information and a graph with
576 Implemented a walker that walks over the type informatin that can
577 be reached from an ir node.
578 Added routine get_kind(firm_thing) in common.h, Added file common.c.
579 Added files typewalk.ch and routines to irdump.
580 Added visited flags and initialization to entity and all types.
581 Implemented some of the missing access routines in type.c, entity.c
584 Implemented constructor for ShrA.
586 Added routine that iterates the graph and verifies all nodes.
587 Added Phi_in stack to irgraph. This allows to build several
588 graphs at once with respect to the Phi building algorithm.
591 Implemented dumper for control flow graphs. Changed irr_* and dead_*
592 examples to dump cfg.
595 Implemeted explicit stack for the Phi node generation. See ircons.c.
598 added include string.h in xoprintf.c to get rid of warning:
599 implicit declaration of function `bcopy'
603 Added more cases to equivalent_node.
604 Portet gigo, identify, identify_remember.
605 The set/pset library can not handle several hash tables. At least,
606 compiling several procedures causes a segmentation fault during access
607 to the tables (oo_program_example). Need to work on this.
608 transform_node still needs to be ported.
609 some cases in equivalent_node are still missing.
611 To get it running I had to remove the call to optimize in the
612 new_Block constructor. It can only be called when the Block is
616 Introduced a walker that walks only over blocks. The asserts
617 might be too strict for general graphs, but so far it works.
618 For the walker I introduced an additional flag in the attribute
619 of Blocks, an a global block_visited variable (in irgraph.h).
620 Furhter I modularized dump_ir_node, implemented dump_ir_graph
621 with the existing walker, and added new routines to output a
623 Changed the examples to call the new dump routine.
626 Added auxiliary routines to ir_node:
627 skip_Proj, skip_Nop, is_Bad ...
628 Changed access routines to use get_irn_n instead of explicit array
629 accesses. Changed get_irn_n to call skip_Id, so that the access routines
630 never will return Id nodes.
633 Repaired Phi computation, changed new_r_Phi_in. Added test program to
634 test irregular controlflow.
637 Updated optimizations computed_value and equivalent_node to new
638 Syntax of FIRM nodes and to use access routines.
639 Added routine skip_Proj in irnode.
641 2.2.2000 Boris Boesler
642 Added files irgwalk.c and irgwalk.h. They include a simple function to
643 traverse an ir graph and execute pre and post functions to current node.
646 Added arrays with parameters and result types to the type informtion
647 of a procedure. This is needed for the code generation. Also added
648 the corresponding access routines.
649 Adapted the testprograms.
652 Found a bug / complication: the call order
653 get_value (makes Phi0, put's it into graph_arr)
654 set_value (overwrites Phi0 in graph_arr)
655 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
657 fails. Added test wether graph_arr is already set in phi_merge.
659 Added tons of comments to explain Phi generation -- the stack hack.
663 irdump now outputs the pnc_number for projs of Cmp nodes.
664 Added routine to access the pnc_string.
667 Added result "dataseg" to Start node, with all it's consequences.
668 We need this for the compiler lab to translate global variables.
669 Now they can be selected from the data segment, and the start
670 node supplies the pointer to this segment.
671 These changes are guarded by preprocessor variable UEBPRAKT in
673 Changed files: common.h, irgraph.ch, irnode.h
677 removed array_example, added array-heap_example and
678 array-stack_example and adapted makefile.
680 Entity now also allows type_method as owner. This is to model
681 the stack, Sel nodes that select a variable (array) from the
682 stack need an entity that describes what they select. This
683 entity gets the type of the enclosing procedure as owner.
686 Added future access routines in `irmode.[ch]' as comments,
687 that all attributes in the ir_mode struct can be user-defined.
688 Added access routines in `irgraph.[ch]', for all attributes.
691 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
692 Added `irvrfy.[ch]' to MAKEFILE
693 Added "inline" before access routines in `irnode.h', that no warnings
694 will appear furthermore.
695 Added three more access routines in `irmode.[ch]':
696 struct tarval *get_min_of_mode (ir_mode *mode);
697 struct tarval *get_max_of_mode (ir_mode *mode);
698 struct tarval *get_null_of_mode (ir_mode *mode);
701 Adaption of Alloc, Sel and Entity to new types:
702 Changed array_example to use type instead of type_class.
703 Changed entity to allow all types as owner instead of
704 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
705 Changed alloc to allow allocating variables of any type instead of
707 Adapted all testprograms to avoid warnings.
709 removed dtest ... from Makefile, replaced by test.
712 Added "run" to makefile, added array_example to makefile of testprograms.
713 Corrected testprogram array
714 Changed assert in irvrfy -- Conv.
projects / libfirm / blob