2 After compacting of in arrays in dead_node_elimination
3 merge blocks and remove Phis with one pred.
6 Freeing of obstack in dead_node_elimination commented in.
7 Compacting in arrays of Block and Phi nodes in dead_node_
12 added set/get_SymConst_type_or_id in irnode.h
13 added field offset to entity in entity.h
14 added field size to type_class in type.h
15 include "gmp.h" in tv.h with "" instead <>
18 Some changes to make the lib better portable
21 Initialize max_node_nr in irprog.
24 Now outputs warning if faulty type in irdump, dump_type_info.
25 Explicit string termination in irdump, vcg_open.
28 Added external to declaration of irp.
29 Added typedef before pns and pnc_number.
30 irmode.c, init_mode(): We need to memset all new modes as
31 tarval_vrfy reads fields before they are initialized: It
32 compares to min/max when tarvals for min/max are allocated!
35 Changed parameter of Methods in type.h and type.c from
36 class to clss. Class is a C++ keyword.
39 Changed some testprograms to accomodate Uebprakt.
42 Finished implementation of dump_all_types.
43 Added new testprogram inheritance_example.
46 Added seven access routines in type.[hc]:
47 get_class_n_member, get_class_n_subtype, get_class_n_supertype,
48 get_strct_n_member, add_strct_member, get_strct_member and set_strct_member.
49 Fixed the type_walk_2 for those seven routines.
52 Added irdump routine dump_all_types.
53 Did changes to irprog, type, typewalk to achieve this.
54 typewalk needs to walk along members, sub and supertypes, this
55 is still missing! irdump then needs to output these edges.
57 ======================================================================
58 ==================== New version: 0.2.5 ==============================
59 ======================================================================
62 Made new Version: 0.2.5
64 15.8.2000 Goetz until 3.9.00
65 Separated irnode.h and many others into two files: one public
67 Added funcionality to extract headers for lib.
70 type_dump also dumps irg->ent
71 if_example: corrected nr of locals
74 irgopt: Correct copy of self pointer in start block.
75 irgopt: Correct treatment of loops: pre function in walker
76 breaks all possible loops in Phi and Block nodes.
77 irr_loop_example: wrong Return statement
78 Now I fixed all but one error: in memory_example.
79 This error showed a conceptual problem, so I wrote
80 a slightly different algorithm. This now runs for
82 dead_node_example: cse is buggy!! merges start and the
86 looking at bug in dead_node_elimination.
88 irnode: all get_..._arr functions changed
89 ircons: new_r_Block: set matured flag.
90 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
91 adapted call_str_example to new concepts.
94 Implemented simpler Phi construction algorithm that constructs
95 correct code for three_cfpred_example in ircons. This algorithm
96 generates more Id nodes than the original algorithm and therefore
98 Also made some changes to optimizations of Not.
101 Fixed a bug, caused by the recursive use in type.h and entity.h.
102 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
103 Fixed a problem in if_while testprogram, so it now works.
106 Fixed bug in optimize(). Returned Null instead n if
107 get_optimize() == false.
110 Added some access routines in type.[hc]. Solved a recursive definition
111 of type_class struct, entity struct and type union.
114 Separated entity header into pure functional header and header
118 ... a bunch small changes not documented
121 Changed output of oo_prog_example: now uses the internal list
122 of all irgs. Had to implement some of the access routines for
123 that. Also fixed a bug in irdump. Main routines did not use
124 current_ir_graph properly.
127 Implemented some missing parts in irgopt.
128 Added field irg to entity. Only valid if entity is a method.
129 Had to resove a cyclic de[endency between irgraph.h and entity.h
131 Added fields sub and super to type_class for inheritance.
132 Added field main_irg to irprog.
135 Fixed some bugs in irgopt.c
136 Added some missing 'get_new_node' methods, so the new obstack contains
140 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
141 Solved some copy'n'paste problems. Deleted most debug-code!
142 Added comments to several files.
145 Fixed bug in _r_ constructors for all four Div operations.
146 Fixed bug in turn_into_tuple: didn't remember the block.
147 Tested transform_node.
150 Fixed some testprograms to new semantics of firm.
151 Added testprogram global_var_example.
152 Fixed a bug in irop: Size of Sel node was (entity *) instead of
153 sel_attr. Therefor array_heap_example aborted.
154 Also found a missing break in typewalk, case iro_Alloc.
155 Added a construct that unifies all things constructed by the lib
156 and needed to represent a program: irprog.ch
157 This contains a list of all types as well as a list of all ir graphs.
158 I added calls to initialization and constructors so that this is constructed
159 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
160 Removed strange block struct and constructor from ircons.c.
161 Moved routines for automatic Phi construction from irgmod to ircons.
162 Sorted functions in ircons to reflect the different interfaces.
163 Renamed dataseg to globals to be conformant with documentation.
164 Added conservation of current_ir_graph to irgopt.c.
165 Corrected bug in Makefiles: wrong path to directory ./inlude.
168 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
169 We should change the naming of the Block constructor.
170 Removed acces routines to attr. "closed" of Block.
171 Removed second implementation of new_ir_node from ircons and some comments
172 concerned with the now resolved cyclic dependency.
173 Fixed some bugs in irgopt so that the compilation goes through.
176 Changed the irnode attribut 'visit' into 'visited'.
177 Added some access functions, like get/set_irn_visit etc.
180 Renamed some access funtion in irgraph.*.
181 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
182 Added two attributes to the irgraph struct. The visited flags belongs
183 to a ir graph, not to a whole program.
186 A new optimization has been finished. The dead-node-elimination copies
187 the existing ir graph from one opstack to another. While walking the
188 graph, only the reachable nodes will be copied, so the "dead-nodes"
189 (unreachable in the controlflow) are removed.
192 Solved some problems in the 'copy_node' function. The in array was not
193 as easy as it seamed.
196 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
197 optimization, which is needed in the paramter list of 'irg_walk'.
200 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
201 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
205 Removed some files from the archive, after dependencies and usage are
207 - 'ir/common/strerror.c'
209 - 'ir/ident/xx_ident.h'
210 an empty file, only included by 'ident.c', but never used;
211 - 'ir/tv/label.c' and
213 contained a numeric counter;
214 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
215 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
216 In the old fiasco compiler, the label thing is used in the backend.
217 Search for 'babil' to see the usage.
218 Also removed the two attributes 'lab' and 'used' in the tarval struct.
221 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
222 afterwards some recursive includes, so libfirm works again.
225 Did a lot of changes, which I never commented until now (4.7.00).
227 * Added new result to Start node: Pointer to global data segment.
228 * Extended Semantics of SymConst node to represent information for the
230 * Added arithmeitc nodes (Shrs, Minus ...)
232 Rearranged the directory structure and adjusted the makefiles.
233 The directories contain:
234 ir: everything for the intermediate representation (better: src?)
235 /ir: the ir itself, and standard optimizations.
236 /tv: the target value module
237 /tr: the type and entity representation
238 /adt: abstract data types
239 /common: stuff needed by all other dirs
240 /debug: debugging Unterstuetzung
242 include: external files needen as includes
243 testprograms: examples to test the lib.
245 The makefiles generate files with extension .d that contain the dependencies
249 Added access routine to attribute link of irnode in irnode.ch.
250 Added get_negated_pnc to irnode.ch.
253 Added an iterator in iropt that calls the optimization for all nodes.
254 Copied optimize's code to optimize_in_place and removed deallocations.
255 Made set_irn_n in irnode.c public.
256 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
257 are allowded as cfgpredecessors to represent dead "incoming" control
259 Added call to optimize_in_place in mature_block. Is this useful?
262 Changed tests from comparing enums to comparing pointers. This is more
263 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
264 now get_irn_op == op_And
267 Compared equivalent_value to the one in the original fiasco.
268 Added a test in case iro_And.
269 Changed implementation of iro_Div. Added routines turn_into_tuple
270 and set_irn_op() in irgmod/irnode.
271 Changed implementation of irn_Minus (although commented out).
272 Now all features are ported or documented for this function.
275 Compared computed_value to the one in the original fiasco.
276 Added one further optimization in case iro_Proj.
277 Now all features are ported for this function.
280 Updated comments in ircons.h.
283 Changed possible attribute of SymConst from type_class to type.
284 SymConst size could be the size of a union, array, ...
287 Implemented two dumpers that dump type information and a graph with
291 Implemented a walker that walks over the type informatin that can
292 be reached from an ir node.
293 Added routine get_kind(firm_thing) in common.h, Added file common.c.
294 Added files typewalk.ch and routines to irdump.
295 Added visited flags and initialization to entity and all types.
296 Implemented some of the missing access routines in type.c, entity.c
299 Implemented constructor for ShrA.
301 Added routine that iterates the graph and verifies all nodes.
302 Added Phi_in stack to irgraph. This allows to build several
303 graphs at once with respect to the Phi building algorithm.
306 Implemented dumper for control flow graphs. Changed irr_* and dead_*
307 examples to dump cfg.
310 Implemeted explicit stack for the Phi node generation. See ircons.c.
313 added include string.h in xoprintf.c to get rid of warning:
314 implicit declaration of function `bcopy'
318 Added more cases to equivalent_node.
319 Portet gigo, identify, identify_remember.
320 The set/pset library can not handle several hash tables. At least,
321 compiling several procedures causes a segmentation fault during access
322 to the tables (oo_program_example). Need to work on this.
323 transform_node still needs to be ported.
324 some cases in equivalent_node are still missing.
326 To get it running I had to remove the call to optimize in the
327 new_Block constructor. It can only be called when the Block is
331 Introduced a walker that walks only over blocks. The asserts
332 might be too strict for general graphs, but so far it works.
333 For the walker I introduced an additional flag in the attribute
334 of Blocks, an a global block_visited variable (in irgraph.h).
335 Furhter I modularized dump_ir_node, implemented dump_ir_graph
336 with the existing walker, and added new routines to output a
338 Changed the examples to call the new dump routine.
341 Added auxiliary routines to ir_node:
342 skip_Proj, skip_Nop, is_Bad ...
343 Changed access routines to use get_irn_n instead of explicit array
344 accesses. Changed get_irn_n to call skip_Id, so that the access routines
345 never will return Id nodes.
348 Repaired Phi computation, changed new_r_Phi_in. Added test program to
349 test irregular controlflow.
352 Updated optimizations computed_value and equivalent_node to new
353 Syntax of FIRM nodes and to use access routines.
354 Added routine skip_Proj in irnode.
356 2.2.2000 Boris Boesler
357 Added files irgwalk.c and irgwalk.h. They include a simple function to
358 traverse an ir graph and execute pre and post functions to current node.
361 Added arrays with parameters and result types to the type informtion
362 of a procedure. This is needed for the code generation. Also added
363 the corresponding access routines.
364 Adapted the testprograms.
367 Found a bug / complication: the call order
368 get_value (makes Phi0, put's it into graph_arr)
369 set_value (overwrites Phi0 in graph_arr)
370 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
372 fails. Added test wether graph_arr is already set in phi_merge.
374 Added tons of comments to explain Phi generation -- the stack hack.
378 irdump now outputs the pnc_number for projs of Cmp nodes.
379 Added routine to access the pnc_string.
382 Added result "dataseg" to Start node, with all it's consequences.
383 We need this for the compiler lab to translate global variables.
384 Now they can be selected from the data segment, and the start
385 node supplies the pointer to this segment.
386 These changes are guarded by preprocessor variable UEBPRAKT in
388 Changed files: common.h, irgraph.ch, irnode.h
392 removed array_example, added array-heap_example and
393 array-stack_example and adapted makefile.
395 Entity now also allows type_method as owner. This is to model
396 the stack, Sel nodes that select a variable (array) from the
397 stack need an entity that describes what they select. This
398 entity gets the type of the enclosing procedure as owner.
401 Added future access routines in `irmode.[ch]' as comments,
402 that all attributes in the ir_mode struct can be user-defined.
403 Added access routines in `irgraph.[ch]', for all attributes.
406 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
407 Added `irvrfy.[ch]' to MAKEFILE
408 Added "inline" before access routines in `irnode.h', that no warnings
409 will appear furthermore.
410 Added three more access routines in `irmode.[ch]':
411 struct tarval *get_min_of_mode (ir_mode *mode);
412 struct tarval *get_max_of_mode (ir_mode *mode);
413 struct tarval *get_null_of_mode (ir_mode *mode);
416 Adaption of Alloc, Sel and Entity to new types:
417 Changed array_example to use type instead of type_class.
418 Changed entity to allow all types as owner instead of
419 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
420 Changed alloc to allow allocating variables of any type instead of
422 Adapted all testprograms to avoid warnings.
424 removed dtest ... from Makefile, replaced by test.
427 Added "run" to makefile, added array_example to makefile of testprograms.
428 Corrected testprogram array
429 Changed assert in irvrfy -- Conv.
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