1 15.8.2000 Goetz until 3.9.00
2 Separated irnode.h and many others into two files: one public
4 Added funcionality to extract headers for lib.
7 type_dump also dumps irg->ent
8 if_example: corrected nr of locals
11 irgopt: Correct copy of self pointer in start block.
12 irgopt: Correct treatment of loops: pre function in walker
13 breaks all possible loops in Phi and Block nodes.
14 irr_loop_example: wrong Return statement
15 Now I fixed all but one error: in memory_example.
16 This error showed a conceptual problem, so I wrote
17 a slightly different algorithm. This now runs for
19 dead_node_example: cse is buggy!! merges start and the
23 looking at bug in dead_node_elimination.
25 irnode: all get_..._arr functions changed
26 ircons: new_r_Block: set matured flag.
27 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
28 adapted call_str_example to new concepts.
31 Implemented simpler Phi construction algorithm that constructs
32 correct code for three_cfpred_example in ircons. This algorithm
33 generates more Id nodes than the original algorithm and therefore
35 Also made some changes to optimizations of Not.
38 Fixed a bug, caused by the recursive use in type.h and entity.h.
39 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
40 Fixed a problem in if_while testprogram, so it now works.
43 Fixed bug in optimize(). Returned Null instead n if
44 get_optimize() == false.
47 Added some access routines in type.[hc]. Solved a recursive definition
48 of type_class struct, entity struct and type union.
51 Separated entity header into pure functional header and header
55 ... a bunch small changes not documented
58 Changed output of oo_prog_example: now uses the internal list
59 of all irgs. Had to implement some of the access routines for
60 that. Also fixed a bug in irdump. Main routines did not use
61 current_ir_graph properly.
64 Implemented some missing parts in irgopt.
65 Added field irg to entity. Only valid if entity is a method.
66 Had to resove a cyclic de[endency between irgraph.h and entity.h
68 Added fields sub and super to type_class for inheritance.
69 Added field main_irg to irprog.
72 Fixed some bugs in irgopt.c
73 Added some missing 'get_new_node' methods, so the new obstack contains
77 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
78 Solved some copy'n'paste problems. Deleted most debug-code!
79 Added comments to several files.
82 Fixed bug in _r_ constructors for all four Div operations.
83 Fixed bug in turn_into_tuple: didn't remember the block.
84 Tested transform_node.
87 Fixed some testprograms to new semantics of firm.
88 Added testprogram global_var_example.
89 Fixed a bug in irop: Size of Sel node was (entity *) instead of
90 sel_attr. Therefor array_heap_example aborted.
91 Also found a missing break in typewalk, case iro_Alloc.
92 Added a construct that unifies all things constructed by the lib
93 and needed to represent a program: irprog.ch
94 This contains a list of all types as well as a list of all ir graphs.
95 I added calls to initialization and constructors so that this is constructed
96 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
97 Removed strange block struct and constructor from ircons.c.
98 Moved routines for automatic Phi construction from irgmod to ircons.
99 Sorted functions in ircons to reflect the different interfaces.
100 Renamed dataseg to globals to be conformant with documentation.
101 Added conservation of current_ir_graph to irgopt.c.
102 Corrected bug in Makefiles: wrong path to directory ./inlude.
105 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
106 We should change the naming of the Block constructor.
107 Removed acces routines to attr. "closed" of Block.
108 Removed second implementation of new_ir_node from ircons and some comments
109 concerned with the now resolved cyclic dependency.
110 Fixed some bugs in irgopt so that the compilation goes through.
113 Changed the irnode attribut 'visit' into 'visited'.
114 Added some access functions, like get/set_irn_visit etc.
117 Renamed some access funtion in irgraph.*.
118 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
119 Added two attributes to the irgraph struct. The visited flags belongs
120 to a ir graph, not to a whole program.
123 A new optimization has been finished. The dead-node-elimination copies
124 the existing ir graph from one opstack to another. While walking the
125 graph, only the reachable nodes will be copied, so the "dead-nodes"
126 (unreachable in the controlflow) are removed.
129 Solved some problems in the 'copy_node' function. The in array was not
130 as easy as it seamed.
133 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
134 optimization, which is needed in the paramter list of 'irg_walk'.
137 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
138 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
142 Removed some files from the archive, after dependencies and usage are
144 - 'ir/common/strerror.c'
146 - 'ir/ident/xx_ident.h'
147 an empty file, only included by 'ident.c', but never used;
148 - 'ir/tv/label.c' and
150 contained a numeric counter;
151 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
152 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
153 In the old fiasco compiler, the label thing is used in the backend.
154 Search for 'babil' to see the usage.
155 Also removed the two attributes 'lab' and 'used' in the tarval struct.
158 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
159 afterwards some recursive includes, so libfirm works again.
162 Did a lot of changes, which I never commented until now (4.7.00).
164 * Added new result to Start node: Pointer to global data segment.
165 * Extended Semantics of SymConst node to represent information for the
167 * Added arithmeitc nodes (Shrs, Minus ...)
169 Rearranged the directory structure and adjusted the makefiles.
170 The directories contain:
171 ir: everything for the intermediate representation (better: src?)
172 /ir: the ir itself, and standard optimizations.
173 /tv: the target value module
174 /tr: the type and entity representation
175 /adt: abstract data types
176 /common: stuff needed by all other dirs
177 /debug: debugging Unterstuetzung
179 include: external files needen as includes
180 testprograms: examples to test the lib.
182 The makefiles generate files with extension .d that contain the dependencies
186 Added access routine to attribute link of irnode in irnode.ch.
187 Added get_negated_pnc to irnode.ch.
190 Added an iterator in iropt that calls the optimization for all nodes.
191 Copied optimize's code to optimize_in_place and removed deallocations.
192 Made set_irn_n in irnode.c public.
193 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
194 are allowded as cfgpredecessors to represent dead "incoming" control
196 Added call to optimize_in_place in mature_block. Is this useful?
199 Changed tests from comparing enums to comparing pointers. This is more
200 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
201 now get_irn_op == op_And
204 Compared equivalent_value to the one in the original fiasco.
205 Added a test in case iro_And.
206 Changed implementation of iro_Div. Added routines turn_into_tuple
207 and set_irn_op() in irgmod/irnode.
208 Changed implementation of irn_Minus (although commented out).
209 Now all features are ported or documented for this function.
212 Compared computed_value to the one in the original fiasco.
213 Added one further optimization in case iro_Proj.
214 Now all features are ported for this function.
217 Updated comments in ircons.h.
220 Changed possible attribute of SymConst from type_class to type.
221 SymConst size could be the size of a union, array, ...
224 Implemented two dumpers that dump type information and a graph with
228 Implemented a walker that walks over the type informatin that can
229 be reached from an ir node.
230 Added routine get_kind(firm_thing) in common.h, Added file common.c.
231 Added files typewalk.ch and routines to irdump.
232 Added visited flags and initialization to entity and all types.
233 Implemented some of the missing access routines in type.c, entity.c
236 Implemented constructor for ShrA.
238 Added routine that iterates the graph and verifies all nodes.
239 Added Phi_in stack to irgraph. This allows to build several
240 graphs at once with respect to the Phi building algorithm.
243 Implemented dumper for control flow graphs. Changed irr_* and dead_*
244 examples to dump cfg.
247 Implemeted explicit stack for the Phi node generation. See ircons.c.
250 added include string.h in xoprintf.c to get rid of warning:
251 implicit declaration of function `bcopy'
255 Added more cases to equivalent_node.
256 Portet gigo, identify, identify_remember.
257 The set/pset library can not handle several hash tables. At least,
258 compiling several procedures causes a segmentation fault during access
259 to the tables (oo_program_example). Need to work on this.
260 transform_node still needs to be ported.
261 some cases in equivalent_node are still missing.
263 To get it running I had to remove the call to optimize in the
264 new_Block constructor. It can only be called when the Block is
268 Introduced a walker that walks only over blocks. The asserts
269 might be too strict for general graphs, but so far it works.
270 For the walker I introduced an additional flag in the attribute
271 of Blocks, an a global block_visited variable (in irgraph.h).
272 Furhter I modularized dump_ir_node, implemented dump_ir_graph
273 with the existing walker, and added new routines to output a
275 Changed the examples to call the new dump routine.
278 Added auxiliary routines to ir_node:
279 skip_Proj, skip_Nop, is_Bad ...
280 Changed access routines to use get_irn_n instead of explicit array
281 accesses. Changed get_irn_n to call skip_Id, so that the access routines
282 never will return Id nodes.
285 Repaired Phi computation, changed new_r_Phi_in. Added test program to
286 test irregular controlflow.
289 Updated optimizations computed_value and equivalent_node to new
290 Syntax of FIRM nodes and to use access routines.
291 Added routine skip_Proj in irnode.
293 2.2.2000 Boris Boesler
294 Added files irgwalk.c and irgwalk.h. They include a simple function to
295 traverse an ir graph and execute pre and post functions to current node.
298 Added arrays with parameters and result types to the type informtion
299 of a procedure. This is needed for the code generation. Also added
300 the corresponding access routines.
301 Adapted the testprograms.
304 Found a bug / complication: the call order
305 get_value (makes Phi0, put's it into graph_arr)
306 set_value (overwrites Phi0 in graph_arr)
307 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
309 fails. Added test wether graph_arr is already set in phi_merge.
311 Added tons of comments to explain Phi generation -- the stack hack.
315 irdump now outputs the pnc_number for projs of Cmp nodes.
316 Added routine to access the pnc_string.
319 Added result "dataseg" to Start node, with all it's consequences.
320 We need this for the compiler lab to translate global variables.
321 Now they can be selected from the data segment, and the start
322 node supplies the pointer to this segment.
323 These changes are guarded by preprocessor variable UEBPRAKT in
325 Changed files: common.h, irgraph.ch, irnode.h
329 removed array_example, added array-heap_example and
330 array-stack_example and adapted makefile.
332 Entity now also allows type_method as owner. This is to model
333 the stack, Sel nodes that select a variable (array) from the
334 stack need an entity that describes what they select. This
335 entity gets the type of the enclosing procedure as owner.
338 Added future access routines in `irmode.[ch]' as comments,
339 that all attributes in the ir_mode struct can be user-defined.
340 Added access routines in `irgraph.[ch]', for all attributes.
343 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
344 Added `irvrfy.[ch]' to MAKEFILE
345 Added "inline" before access routines in `irnode.h', that no warnings
346 will appear furthermore.
347 Added three more access routines in `irmode.[ch]':
348 struct tarval *get_min_of_mode (ir_mode *mode);
349 struct tarval *get_max_of_mode (ir_mode *mode);
350 struct tarval *get_null_of_mode (ir_mode *mode);
353 Adaption of Alloc, Sel and Entity to new types:
354 Changed array_example to use type instead of type_class.
355 Changed entity to allow all types as owner instead of
356 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
357 Changed alloc to allow allocating variables of any type instead of
359 Adapted all testprograms to avoid warnings.
361 removed dtest ... from Makefile, replaced by test.
364 Added "run" to makefile, added array_example to makefile of testprograms.
365 Corrected testprogram array
366 Changed assert in irvrfy -- Conv.
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