2 Moved struct from irprog.h to irprog_t.h
5 After compacting of in arrays in dead_node_elimination
6 merge blocks and remove Phis with one pred.
9 Freeing of obstack in dead_node_elimination commented in.
10 Compacting in arrays of Block and Phi nodes in dead_node_
15 added set/get_SymConst_type_or_id in irnode.h
16 added field offset to entity in entity.h
17 added field size to type_class in type.h
18 include "gmp.h" in tv.h with "" instead <>
21 Some changes to make the lib better portable
24 Initialize max_node_nr in irprog.
27 Now outputs warning if faulty type in irdump, dump_type_info.
28 Explicit string termination in irdump, vcg_open.
31 Added external to declaration of irp.
32 Added typedef before pns and pnc_number.
33 irmode.c, init_mode(): We need to memset all new modes as
34 tarval_vrfy reads fields before they are initialized: It
35 compares to min/max when tarvals for min/max are allocated!
38 Changed parameter of Methods in type.h and type.c from
39 class to clss. Class is a C++ keyword.
42 Changed some testprograms to accomodate Uebprakt.
45 Finished implementation of dump_all_types.
46 Added new testprogram inheritance_example.
49 Added seven access routines in type.[hc]:
50 get_class_n_member, get_class_n_subtype, get_class_n_supertype,
51 get_strct_n_member, add_strct_member, get_strct_member and set_strct_member.
52 Fixed the type_walk_2 for those seven routines.
55 Added irdump routine dump_all_types.
56 Did changes to irprog, type, typewalk to achieve this.
57 typewalk needs to walk along members, sub and supertypes, this
58 is still missing! irdump then needs to output these edges.
60 ======================================================================
61 ==================== New version: 0.2.5 ==============================
62 ======================================================================
65 Made new Version: 0.2.5
67 15.8.2000 Goetz until 3.9.00
68 Separated irnode.h and many others into two files: one public
70 Added funcionality to extract headers for lib.
73 type_dump also dumps irg->ent
74 if_example: corrected nr of locals
77 irgopt: Correct copy of self pointer in start block.
78 irgopt: Correct treatment of loops: pre function in walker
79 breaks all possible loops in Phi and Block nodes.
80 irr_loop_example: wrong Return statement
81 Now I fixed all but one error: in memory_example.
82 This error showed a conceptual problem, so I wrote
83 a slightly different algorithm. This now runs for
85 dead_node_example: cse is buggy!! merges start and the
89 looking at bug in dead_node_elimination.
91 irnode: all get_..._arr functions changed
92 ircons: new_r_Block: set matured flag.
93 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
94 adapted call_str_example to new concepts.
97 Implemented simpler Phi construction algorithm that constructs
98 correct code for three_cfpred_example in ircons. This algorithm
99 generates more Id nodes than the original algorithm and therefore
101 Also made some changes to optimizations of Not.
104 Fixed a bug, caused by the recursive use in type.h and entity.h.
105 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
106 Fixed a problem in if_while testprogram, so it now works.
109 Fixed bug in optimize(). Returned Null instead n if
110 get_optimize() == false.
113 Added some access routines in type.[hc]. Solved a recursive definition
114 of type_class struct, entity struct and type union.
117 Separated entity header into pure functional header and header
121 ... a bunch small changes not documented
124 Changed output of oo_prog_example: now uses the internal list
125 of all irgs. Had to implement some of the access routines for
126 that. Also fixed a bug in irdump. Main routines did not use
127 current_ir_graph properly.
130 Implemented some missing parts in irgopt.
131 Added field irg to entity. Only valid if entity is a method.
132 Had to resove a cyclic de[endency between irgraph.h and entity.h
134 Added fields sub and super to type_class for inheritance.
135 Added field main_irg to irprog.
138 Fixed some bugs in irgopt.c
139 Added some missing 'get_new_node' methods, so the new obstack contains
143 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
144 Solved some copy'n'paste problems. Deleted most debug-code!
145 Added comments to several files.
148 Fixed bug in _r_ constructors for all four Div operations.
149 Fixed bug in turn_into_tuple: didn't remember the block.
150 Tested transform_node.
153 Fixed some testprograms to new semantics of firm.
154 Added testprogram global_var_example.
155 Fixed a bug in irop: Size of Sel node was (entity *) instead of
156 sel_attr. Therefor array_heap_example aborted.
157 Also found a missing break in typewalk, case iro_Alloc.
158 Added a construct that unifies all things constructed by the lib
159 and needed to represent a program: irprog.ch
160 This contains a list of all types as well as a list of all ir graphs.
161 I added calls to initialization and constructors so that this is constructed
162 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
163 Removed strange block struct and constructor from ircons.c.
164 Moved routines for automatic Phi construction from irgmod to ircons.
165 Sorted functions in ircons to reflect the different interfaces.
166 Renamed dataseg to globals to be conformant with documentation.
167 Added conservation of current_ir_graph to irgopt.c.
168 Corrected bug in Makefiles: wrong path to directory ./inlude.
171 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
172 We should change the naming of the Block constructor.
173 Removed acces routines to attr. "closed" of Block.
174 Removed second implementation of new_ir_node from ircons and some comments
175 concerned with the now resolved cyclic dependency.
176 Fixed some bugs in irgopt so that the compilation goes through.
179 Changed the irnode attribut 'visit' into 'visited'.
180 Added some access functions, like get/set_irn_visit etc.
183 Renamed some access funtion in irgraph.*.
184 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
185 Added two attributes to the irgraph struct. The visited flags belongs
186 to a ir graph, not to a whole program.
189 A new optimization has been finished. The dead-node-elimination copies
190 the existing ir graph from one opstack to another. While walking the
191 graph, only the reachable nodes will be copied, so the "dead-nodes"
192 (unreachable in the controlflow) are removed.
195 Solved some problems in the 'copy_node' function. The in array was not
196 as easy as it seamed.
199 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
200 optimization, which is needed in the paramter list of 'irg_walk'.
203 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
204 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
208 Removed some files from the archive, after dependencies and usage are
210 - 'ir/common/strerror.c'
212 - 'ir/ident/xx_ident.h'
213 an empty file, only included by 'ident.c', but never used;
214 - 'ir/tv/label.c' and
216 contained a numeric counter;
217 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
218 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
219 In the old fiasco compiler, the label thing is used in the backend.
220 Search for 'babil' to see the usage.
221 Also removed the two attributes 'lab' and 'used' in the tarval struct.
224 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
225 afterwards some recursive includes, so libfirm works again.
228 Did a lot of changes, which I never commented until now (4.7.00).
230 * Added new result to Start node: Pointer to global data segment.
231 * Extended Semantics of SymConst node to represent information for the
233 * Added arithmeitc nodes (Shrs, Minus ...)
235 Rearranged the directory structure and adjusted the makefiles.
236 The directories contain:
237 ir: everything for the intermediate representation (better: src?)
238 /ir: the ir itself, and standard optimizations.
239 /tv: the target value module
240 /tr: the type and entity representation
241 /adt: abstract data types
242 /common: stuff needed by all other dirs
243 /debug: debugging Unterstuetzung
245 include: external files needen as includes
246 testprograms: examples to test the lib.
248 The makefiles generate files with extension .d that contain the dependencies
252 Added access routine to attribute link of irnode in irnode.ch.
253 Added get_negated_pnc to irnode.ch.
256 Added an iterator in iropt that calls the optimization for all nodes.
257 Copied optimize's code to optimize_in_place and removed deallocations.
258 Made set_irn_n in irnode.c public.
259 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
260 are allowded as cfgpredecessors to represent dead "incoming" control
262 Added call to optimize_in_place in mature_block. Is this useful?
265 Changed tests from comparing enums to comparing pointers. This is more
266 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
267 now get_irn_op == op_And
270 Compared equivalent_value to the one in the original fiasco.
271 Added a test in case iro_And.
272 Changed implementation of iro_Div. Added routines turn_into_tuple
273 and set_irn_op() in irgmod/irnode.
274 Changed implementation of irn_Minus (although commented out).
275 Now all features are ported or documented for this function.
278 Compared computed_value to the one in the original fiasco.
279 Added one further optimization in case iro_Proj.
280 Now all features are ported for this function.
283 Updated comments in ircons.h.
286 Changed possible attribute of SymConst from type_class to type.
287 SymConst size could be the size of a union, array, ...
290 Implemented two dumpers that dump type information and a graph with
294 Implemented a walker that walks over the type informatin that can
295 be reached from an ir node.
296 Added routine get_kind(firm_thing) in common.h, Added file common.c.
297 Added files typewalk.ch and routines to irdump.
298 Added visited flags and initialization to entity and all types.
299 Implemented some of the missing access routines in type.c, entity.c
302 Implemented constructor for ShrA.
304 Added routine that iterates the graph and verifies all nodes.
305 Added Phi_in stack to irgraph. This allows to build several
306 graphs at once with respect to the Phi building algorithm.
309 Implemented dumper for control flow graphs. Changed irr_* and dead_*
310 examples to dump cfg.
313 Implemeted explicit stack for the Phi node generation. See ircons.c.
316 added include string.h in xoprintf.c to get rid of warning:
317 implicit declaration of function `bcopy'
321 Added more cases to equivalent_node.
322 Portet gigo, identify, identify_remember.
323 The set/pset library can not handle several hash tables. At least,
324 compiling several procedures causes a segmentation fault during access
325 to the tables (oo_program_example). Need to work on this.
326 transform_node still needs to be ported.
327 some cases in equivalent_node are still missing.
329 To get it running I had to remove the call to optimize in the
330 new_Block constructor. It can only be called when the Block is
334 Introduced a walker that walks only over blocks. The asserts
335 might be too strict for general graphs, but so far it works.
336 For the walker I introduced an additional flag in the attribute
337 of Blocks, an a global block_visited variable (in irgraph.h).
338 Furhter I modularized dump_ir_node, implemented dump_ir_graph
339 with the existing walker, and added new routines to output a
341 Changed the examples to call the new dump routine.
344 Added auxiliary routines to ir_node:
345 skip_Proj, skip_Nop, is_Bad ...
346 Changed access routines to use get_irn_n instead of explicit array
347 accesses. Changed get_irn_n to call skip_Id, so that the access routines
348 never will return Id nodes.
351 Repaired Phi computation, changed new_r_Phi_in. Added test program to
352 test irregular controlflow.
355 Updated optimizations computed_value and equivalent_node to new
356 Syntax of FIRM nodes and to use access routines.
357 Added routine skip_Proj in irnode.
359 2.2.2000 Boris Boesler
360 Added files irgwalk.c and irgwalk.h. They include a simple function to
361 traverse an ir graph and execute pre and post functions to current node.
364 Added arrays with parameters and result types to the type informtion
365 of a procedure. This is needed for the code generation. Also added
366 the corresponding access routines.
367 Adapted the testprograms.
370 Found a bug / complication: the call order
371 get_value (makes Phi0, put's it into graph_arr)
372 set_value (overwrites Phi0 in graph_arr)
373 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
375 fails. Added test wether graph_arr is already set in phi_merge.
377 Added tons of comments to explain Phi generation -- the stack hack.
381 irdump now outputs the pnc_number for projs of Cmp nodes.
382 Added routine to access the pnc_string.
385 Added result "dataseg" to Start node, with all it's consequences.
386 We need this for the compiler lab to translate global variables.
387 Now they can be selected from the data segment, and the start
388 node supplies the pointer to this segment.
389 These changes are guarded by preprocessor variable UEBPRAKT in
391 Changed files: common.h, irgraph.ch, irnode.h
395 removed array_example, added array-heap_example and
396 array-stack_example and adapted makefile.
398 Entity now also allows type_method as owner. This is to model
399 the stack, Sel nodes that select a variable (array) from the
400 stack need an entity that describes what they select. This
401 entity gets the type of the enclosing procedure as owner.
404 Added future access routines in `irmode.[ch]' as comments,
405 that all attributes in the ir_mode struct can be user-defined.
406 Added access routines in `irgraph.[ch]', for all attributes.
409 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
410 Added `irvrfy.[ch]' to MAKEFILE
411 Added "inline" before access routines in `irnode.h', that no warnings
412 will appear furthermore.
413 Added three more access routines in `irmode.[ch]':
414 struct tarval *get_min_of_mode (ir_mode *mode);
415 struct tarval *get_max_of_mode (ir_mode *mode);
416 struct tarval *get_null_of_mode (ir_mode *mode);
419 Adaption of Alloc, Sel and Entity to new types:
420 Changed array_example to use type instead of type_class.
421 Changed entity to allow all types as owner instead of
422 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
423 Changed alloc to allow allocating variables of any type instead of
425 Adapted all testprograms to avoid warnings.
427 removed dtest ... from Makefile, replaced by test.
430 Added "run" to makefile, added array_example to makefile of testprograms.
431 Corrected testprogram array
432 Changed assert in irvrfy -- Conv.
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