2 irgopt: Correct copy of self pointer in start block.
3 irgopt: Correct treatment of loops: pre function in walker
4 breaks all possible loops in Phi and Block nodes.
5 irr_loop_example: wrong Return statement
6 Now I fixed all but one error: in memory_example.
7 This error showed a conceptual problem, so I wrote
8 a slightly different algorithm. This now runs for
10 dead_node_example: cse is buggy!! merges start and the
14 looking at bug in dead_node_elimination.
16 irnode: all get_..._arr functions changed
17 ircons: new_r_Block: set matured flag.
18 ircons: new_r_SymConst: needs mode_p for linkage_ptr_info.
19 adapted call_str_example to new concepts.
22 Implemented simpler Phi construction algorithm that constructs
23 correct code for three_cfpred_example in ircons. This algorithm
24 generates more Id nodes than the original algorithm and therefore
26 Also made some changes to optimizations of Not.
29 Fixed a bug, caused by the recursive use in type.h and entity.h.
30 Deleted the _TYPE_TYPEDEF_ and inserted the _ENTITY_TYPEDEF_ instead.
31 Fixed a problem in if_while testprogram, so it now works.
34 Fixed bug in optimize(). Returned Null instead n if
35 get_optimize() == false.
38 Added some access routines in type.[hc]. Solved a recursive definition
39 of type_class struct, entity struct and type union.
42 Separated entity header into pure functional header and header
46 ... a bunch small changes not documented
49 Changed output of oo_prog_example: now uses the internal list
50 of all irgs. Had to implement some of the access routines for
51 that. Also fixed a bug in irdump. Main routines did not use
52 current_ir_graph properly.
55 Implemented some missing parts in irgopt.
56 Added field irg to entity. Only valid if entity is a method.
57 Had to resove a cyclic de[endency between irgraph.h and entity.h
59 Added fields sub and super to type_class for inheritance.
60 Added field main_irg to irprog.
63 Fixed some bugs in irgopt.c
64 Added some missing 'get_new_node' methods, so the new obstack contains
68 Renamed ir_vrfy to irn_vrfy and vrfy_graphg to irg_vrfy.
69 Solved some copy'n'paste problems. Deleted most debug-code!
70 Added comments to several files.
73 Fixed bug in _r_ constructors for all four Div operations.
74 Fixed bug in turn_into_tuple: didn't remember the block.
75 Tested transform_node.
78 Fixed some testprograms to new semantics of firm.
79 Added testprogram global_var_example.
80 Fixed a bug in irop: Size of Sel node was (entity *) instead of
81 sel_attr. Therefor array_heap_example aborted.
82 Also found a missing break in typewalk, case iro_Alloc.
83 Added a construct that unifies all things constructed by the lib
84 and needed to represent a program: irprog.ch
85 This contains a list of all types as well as a list of all ir graphs.
86 I added calls to initialization and constructors so that this is constructed
87 automatically. I changed firm.c, type.c, irgraph.c and ev. more.
88 Removed strange block struct and constructor from ircons.c.
89 Moved routines for automatic Phi construction from irgmod to ircons.
90 Sorted functions in ircons to reflect the different interfaces.
91 Renamed dataseg to globals to be conformant with documentation.
92 Added conservation of current_ir_graph to irgopt.c.
93 Corrected bug in Makefiles: wrong path to directory ./inlude.
96 Commented a whole bunch of stuff, e.g. in ircons.h (Procedure to construct)
97 We should change the naming of the Block constructor.
98 Removed acces routines to attr. "closed" of Block.
99 Removed second implementation of new_ir_node from ircons and some comments
100 concerned with the now resolved cyclic dependency.
101 Fixed some bugs in irgopt so that the compilation goes through.
104 Changed the irnode attribut 'visit' into 'visited'.
105 Added some access functions, like get/set_irn_visit etc.
108 Renamed some access funtion in irgraph.*.
109 Deleted two global flags (ir_visited and block_visited) from irgraph.*.
110 Added two attributes to the irgraph struct. The visited flags belongs
111 to a ir graph, not to a whole program.
114 A new optimization has been finished. The dead-node-elimination copies
115 the existing ir graph from one opstack to another. While walking the
116 graph, only the reachable nodes will be copied, so the "dead-nodes"
117 (unreachable in the controlflow) are removed.
120 Solved some problems in the 'copy_node' function. The in array was not
121 as easy as it seamed.
124 Wrote a new 'post' funtion, for future use in 'dead-node-elimination'
125 optimization, which is needed in the paramter list of 'irg_walk'.
128 Moved 'optimze_in_place_wrapper' from iropt.* tothe new files irgopt.*.
129 New functions 'local_optimze_graph' and 'dead_node_elimination' are added,
133 Removed some files from the archive, after dependencies and usage are
135 - 'ir/common/strerror.c'
137 - 'ir/ident/xx_ident.h'
138 an empty file, only included by 'ident.c', but never used;
139 - 'ir/tv/label.c' and
141 contained a numeric counter;
142 The files were included in 'tv.h' and implemented in 'tarval.c'. The two
143 functions 'tarval_label' and 'tarval_forall_labeled' were also never used.
144 In the old fiasco compiler, the label thing is used in the backend.
145 Search for 'babil' to see the usage.
146 Also removed the two attributes 'lab' and 'used' in the tarval struct.
149 Moved the 'new_ir_node' constructor from ircons.* to irnode.* and fixed
150 afterwards some recursive includes, so libfirm works again.
153 Did a lot of changes, which I never commented until now (4.7.00).
155 * Added new result to Start node: Pointer to global data segment.
156 * Extended Semantics of SymConst node to represent information for the
158 * Added arithmeitc nodes (Shrs, Minus ...)
160 Rearranged the directory structure and adjusted the makefiles.
161 The directories contain:
162 ir: everything for the intermediate representation (better: src?)
163 /ir: the ir itself, and standard optimizations.
164 /tv: the target value module
165 /tr: the type and entity representation
166 /adt: abstract data types
167 /common: stuff needed by all other dirs
168 /debug: debugging Unterstuetzung
170 include: external files needen as includes
171 testprograms: examples to test the lib.
173 The makefiles generate files with extension .d that contain the dependencies
177 Added access routine to attribute link of irnode in irnode.ch.
178 Added get_negated_pnc to irnode.ch.
181 Added an iterator in iropt that calls the optimization for all nodes.
182 Copied optimize's code to optimize_in_place and removed deallocations.
183 Made set_irn_n in irnode.c public.
184 Added Bad as possible cfg predecessor in is_cfg_node in irnode. Bads
185 are allowded as cfgpredecessors to represent dead "incoming" control
187 Added call to optimize_in_place in mature_block. Is this useful?
190 Changed tests from comparing enums to comparing pointers. This is more
191 efficient (is it?) and reads better. e.g., instead get_irn_opcode == irm_And
192 now get_irn_op == op_And
195 Compared equivalent_value to the one in the original fiasco.
196 Added a test in case iro_And.
197 Changed implementation of iro_Div. Added routines turn_into_tuple
198 and set_irn_op() in irgmod/irnode.
199 Changed implementation of irn_Minus (although commented out).
200 Now all features are ported or documented for this function.
203 Compared computed_value to the one in the original fiasco.
204 Added one further optimization in case iro_Proj.
205 Now all features are ported for this function.
208 Updated comments in ircons.h.
211 Changed possible attribute of SymConst from type_class to type.
212 SymConst size could be the size of a union, array, ...
215 Implemented two dumpers that dump type information and a graph with
219 Implemented a walker that walks over the type informatin that can
220 be reached from an ir node.
221 Added routine get_kind(firm_thing) in common.h, Added file common.c.
222 Added files typewalk.ch and routines to irdump.
223 Added visited flags and initialization to entity and all types.
224 Implemented some of the missing access routines in type.c, entity.c
227 Implemented constructor for ShrA.
229 Added routine that iterates the graph and verifies all nodes.
230 Added Phi_in stack to irgraph. This allows to build several
231 graphs at once with respect to the Phi building algorithm.
234 Implemented dumper for control flow graphs. Changed irr_* and dead_*
235 examples to dump cfg.
238 Implemeted explicit stack for the Phi node generation. See ircons.c.
241 added include string.h in xoprintf.c to get rid of warning:
242 implicit declaration of function `bcopy'
246 Added more cases to equivalent_node.
247 Portet gigo, identify, identify_remember.
248 The set/pset library can not handle several hash tables. At least,
249 compiling several procedures causes a segmentation fault during access
250 to the tables (oo_program_example). Need to work on this.
251 transform_node still needs to be ported.
252 some cases in equivalent_node are still missing.
254 To get it running I had to remove the call to optimize in the
255 new_Block constructor. It can only be called when the Block is
259 Introduced a walker that walks only over blocks. The asserts
260 might be too strict for general graphs, but so far it works.
261 For the walker I introduced an additional flag in the attribute
262 of Blocks, an a global block_visited variable (in irgraph.h).
263 Furhter I modularized dump_ir_node, implemented dump_ir_graph
264 with the existing walker, and added new routines to output a
266 Changed the examples to call the new dump routine.
269 Added auxiliary routines to ir_node:
270 skip_Proj, skip_Nop, is_Bad ...
271 Changed access routines to use get_irn_n instead of explicit array
272 accesses. Changed get_irn_n to call skip_Id, so that the access routines
273 never will return Id nodes.
276 Repaired Phi computation, changed new_r_Phi_in. Added test program to
277 test irregular controlflow.
280 Updated optimizations computed_value and equivalent_node to new
281 Syntax of FIRM nodes and to use access routines.
282 Added routine skip_Proj in irnode.
284 2.2.2000 Boris Boesler
285 Added files irgwalk.c and irgwalk.h. They include a simple function to
286 traverse an ir graph and execute pre and post functions to current node.
289 Added arrays with parameters and result types to the type informtion
290 of a procedure. This is needed for the code generation. Also added
291 the corresponding access routines.
292 Adapted the testprograms.
295 Found a bug / complication: the call order
296 get_value (makes Phi0, put's it into graph_arr)
297 set_value (overwrites Phi0 in graph_arr)
298 mature_block (upgrades Phi0, puts it again into graph_arr, overwriting
300 fails. Added test wether graph_arr is already set in phi_merge.
302 Added tons of comments to explain Phi generation -- the stack hack.
306 irdump now outputs the pnc_number for projs of Cmp nodes.
307 Added routine to access the pnc_string.
310 Added result "dataseg" to Start node, with all it's consequences.
311 We need this for the compiler lab to translate global variables.
312 Now they can be selected from the data segment, and the start
313 node supplies the pointer to this segment.
314 These changes are guarded by preprocessor variable UEBPRAKT in
316 Changed files: common.h, irgraph.ch, irnode.h
320 removed array_example, added array-heap_example and
321 array-stack_example and adapted makefile.
323 Entity now also allows type_method as owner. This is to model
324 the stack, Sel nodes that select a variable (array) from the
325 stack need an entity that describes what they select. This
326 entity gets the type of the enclosing procedure as owner.
329 Added future access routines in `irmode.[ch]' as comments,
330 that all attributes in the ir_mode struct can be user-defined.
331 Added access routines in `irgraph.[ch]', for all attributes.
334 Moved verify routines from `irgraph.[ch]' to own files `irvrfy.[ch]'.
335 Added `irvrfy.[ch]' to MAKEFILE
336 Added "inline" before access routines in `irnode.h', that no warnings
337 will appear furthermore.
338 Added three more access routines in `irmode.[ch]':
339 struct tarval *get_min_of_mode (ir_mode *mode);
340 struct tarval *get_max_of_mode (ir_mode *mode);
341 struct tarval *get_null_of_mode (ir_mode *mode);
344 Adaption of Alloc, Sel and Entity to new types:
345 Changed array_example to use type instead of type_class.
346 Changed entity to allow all types as owner instead of
347 only type_class. Added routine "assert_legal_owner_of_ent(type* type)".
348 Changed alloc to allow allocating variables of any type instead of
350 Adapted all testprograms to avoid warnings.
352 removed dtest ... from Makefile, replaced by test.
355 Added "run" to makefile, added array_example to makefile of testprograms.
356 Corrected testprogram array
357 Changed assert in irvrfy -- Conv.
projects / libfirm / blob