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* chksum: fix misleading comment.Kaz Kylheku2023-09-011-4/+1
| | | | | * chksum.c: Fix incorrect comment stating that the crc32 functions are generated.
* New functions for shell escaping.Kaz Kylheku2023-09-013-0/+125
| | | | | | | | | | | * stream.c (sh_esc, sh_esc_all, sh_esc_dq, sh_esc_sq): New static functions. (stream_init): sh-esc, sh-esc-all, sh-esc-dq, sh-esc-sq: Intrinsics registered. * tests/018/sh-esc.tl: New file. * txr.1: Documented.
* New function: str-esc.Kaz Kylheku2023-09-015-0/+98
| | | | | | | | | | * lib.[ch] (str_esc): New function. * eval.c (eval_init): str-esc intrinsic registered. * tests/015/esc.tl: New file. * txr.1: Documented.
* awk: prn returns nil.Kaz Kylheku2023-08-263-1/+17
| | | | | | | | | * stdlib/awk.tl (awk-state prn): Return nil in the no-argument case instead of returning whatever put-string returns. * tests/015/awk-misc.tl: New file. * txr.1: Documented.
* New macros opf and lopf.Kaz Kylheku2023-08-234-1/+89
| | | | | | | | | | | | | | These remove repetitive (op ...) syntax from the arguments of functional combinators. * stdlib/opt.tl (opf, lopf): New macros. * autoload.c (op_set_entries): Register opf and lopf as autoload triggers. * tests/012/op.tl: New tests. * txr.1: Documented.
* genman: guard against symbol hash collisions.Kaz Kylheku2023-08-221-6/+10
| | | | | | | | * genman.txr (process-ambiguities): Keep track of calculated hashes and error out when there is a duplicate. When the time comes, we will have to resolve those somehow, and also change the doc function to do it the same way.
* genman: move all hashes into do block.Kaz Kylheku2023-08-221-3/+3
| | | | | | * genman.txr (symhash, tagma, tochash): Define in @(do ...) block with defvar for consistency ith other hashes.
* genman: remove special handling of "NAME".Kaz Kylheku2023-08-221-2/+0
| | | | | | | | | * genman.txr: remove the manual insertion of the mapping of the "lbAB" tag to the new hash for "NAME", the first section of the man page. This is an outdated dud that does nothing. The tag is being properly processed without this hack and the new hash-title function will assign it to a different hash.
* load-args-process: bugfix: :compile action must load.Kaz Kylheku2023-08-222-3/+12
| | | | | | | | | | * stdlib/load-args.tl (load-args-process): When compile-update-file doesn't do anything due to the compiled file being up-to-date, the file must be loaded, so that the effect is similar to compiling. Otherwise subsequent files may fail to compile due to missing definitions such as packages. * txr.1: Documented.
* doc: new hashing scheme for navigation, doc lookup.Kaz Kylheku2023-08-223-2390/+67
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is not an easy change to make because it breaks the validity of existing URLs in the wild which point to specific sections of the TXR manual. Some of my recent changes to capitalization of numerous headings have already broken many URLs, so we might as well bite the bullet and do this now. The problem with the current scheme is that entire section titles are hashed: all the words of a title, not just the names of functions. Whenever we add a new function, macro or variable which is documented together with related functions in the same paragraph under the same heading, the heading changes, and the hash changes. For instance, the hash for the hash-map identifier is actually the hash of the string "Function <tt>hash-map</tt>". Under the new scheme, section titles are hashed in a more complicated way that is robust against most edits. If a title contains any symbols marked up with <tt>, then the leftmost such symbol is taken as the title. Otherwise, the whole title is mapped to lower case. There is no longer a stdlib/doc-syms.tl file, and the special disambiguated "D-<HEX>" codes are also gone. Symbols are no longer associated with section hashes or disambiguation section codes. The hash of a symbol is a 32 bit CRC-32 checksum, expressed as S-<HEX> where <HEX> is 8 hex digits. A section which defines symbols has not only a <a name="..."> for its own hash but also additional <a name="...>" elements for each of the symbols that it defines. If a section defines an ambiguous symbol (one that is also defined with a different meaning in a different section), then that symbol is not linked to either section; it is mapped to the generated disambiguating section. * genman.txr (dupes): Renamed to dupe-hashes for clarity. (tagnum): Hash removed. (direct): New hash. Tracks the assocation between sections hashes and hashes of symbols that are defined only in those symbols (no ambiguity) and thus the symbol hashes can navigate directly to the sections. Serves as a complement to the disamb hash. (colli): There are no collisions now, so initialize this to empty. (hash-str): Function removed. (hash-title): This function becomes more complicated. If a title has at least one <tt>..</tt> item, then that is taken in its place. Either way, the title is transformed and enumerated against duplication and hashed with crc32 instead of the original custom hashing function. (enumerate): Function removed: enumeration of titles is done inside hash-title. All manipulations of symhash using material from HTML now use html-decode, so that we hash the original symbol name like "str<" and not "str&lt;". When filtering the BODY, we have a new case: whenever we see a <a name="...">, we now check the new direct hash to see if there is a list of symbol hashes for the given section. If so, we generate additional <a name="..."> definitions for all the symbol hashes. At the end of the file, the "missing from image" processing is condensed, and the generation of the stdlib/doc-syms.tl file is removed. * stdlib/doc-syms.tl: Removed. * stdlib/doc-lookup.tl: Don't load doc-syms. Use crc32 plus formatting to conver a symbol to the hash that is used in the document and try the lookup with that.
* New function: csort-group.Kaz Kylheku2023-08-175-2/+26
| | | | | | | | | | | | | * autoload.c (csort_set_entries): Register csort-group as autoload trigger for stdlib/csort.tl. * stdlib/csort.tl (csort-group): New function. * tests/012/sort.tl: Tests for sort-group and csort-group. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* windows: don't require admin privilege.Kaz Kylheku2023-08-161-5/+20
| | | | | | | | | | | | | | * inst.nsi (RequestExecutionLevel): Use the value "highest" instead of "admin", so that privilege is required for users that have it, otherwise not. (AccountType): New variable. (.onInit): Obtain the account type and store it in AccountType. Default the installation directory to $LOCALAPPDATA. If the user is admin, change the default to the appropriate Program Files directory. (TXR): If the user isn't admin, add TXR to the current user's PATH rather than the system PATH for everyone. (Uninstall): Remove TXR from the appropriate PATH.
* doc: massive revision of capitalization in headings.Kaz Kylheku2023-08-163-189/+195
| | | | | | | | | | | | | | | | | | | | | | | | | | In this patch we change the convention of uncapitalized words occurring in headings such as "Special variable *foo*". * checkman.txr (check-var, check-func): Consolidated into a single pattern function called check-coNP. This now enforces capitalization, and also has a giant fall-back clause which explicitly recognizes .coNP headings that are not specially checked by the previous rules, after which there is an error case, so that unclassified .coNP headings are diagnosed. A bug is fixed here in the handling of Special Variable and Variable headings. The pattern match was wrong, so these were not being properly recognized. Without the error case at the end, a number of errors occur in the document where the .desc is missing after a Variable or Special Variable. * txr.1: (.dir, .dirs): Fix capitalization of Directive and Directives in headings generated by this macro. Fix capitalization in numerous .coNP headings. * stdlib/doc-syms.tl: Updated. Unfortunately, many symbols change their hash value because it's based on the entire heading.
* doc: typo in *stdnull* example.Kaz Kylheku2023-08-161-1/+1
| | | | | * txr.1: Fix misspelled *stderr* in example demonstrating binding of *stderr* to *stdnull*.
* doc: capitalize User-defined in heading.Kaz Kylheku2023-08-161-1/+1
| | | | * txr.1: Fix "User-defined Patterns" heading to "User-Defined".
* math: tofloat and toint in user-defined arithmetic.Kaz Kylheku2023-08-145-126/+172
| | | | | | | | | | | | | | | | | | * arith.c (tofloat_s, toint_s): New symbol variables. (tofloat, toint): If the argument is a COBJ, handle it via do_unary_method. (arith_init): Initialize new symbol variables. The functions tofloat, toint, tofloatz and tointz. are now registered here, rather than eval_init. * eval.c (eval_init): Remove registrations of tofloat, toint, tofloatz and tointz. * tests/016/ud-arith.tl: New tests. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* math: add tests for new user-defined arith functions.Kaz Kylheku2023-08-141-1/+89
| | | | | | * tests/016/ud-arith.tl (numbase): Add methods for the newer functions: cbrt, erf, ... Add tests covering these.
* tree: bug: tree-delete-specific-node doesn't use key funKaz Kylheku2023-08-142-2/+10
| | | | | | | | | | | * tree.c (tr_delete_specific): We cant' juse use key(node) as the search key; we must apply the tree's key function to the node key field to retrieve the correct search key. * tests/010/tree.tl: New test case which fails without this bugfix: a node which is the left subtree of the root node doesn't get deleted since the search is led astray by the wrong key object.
* listener: auto compound expression mode.Kaz Kylheku2023-08-143-2/+39
| | | | | | | | | | | | | * parser.c (listener_auto_compound_s): New symbol variable. (repl): If *listener-auto-compound-p* is true, then evaluate multiple forms directly as a compound expression, without inserting progn at the head. (parse_init): Initialize symbol variable and register the *listener-auto-compound-p* special. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* listener: change *listener-sel-inclusive-p* default.Kaz Kylheku2023-08-131-1/+1
| | | | | | * parser.c (parse_init): Set the initial value of *listener-sel-inclusive-p* to t instead of nil, since terminals tend to have block cursors by default.
* configure: fix: _TIME_BITS is tied to _FILE_OFFSET_BITSKaz Kylheku2023-08-121-29/+69
| | | | | | | | | | | | | | This problem was reported by Void Linux package maintainer adigitoleo. * configure: in glibc, _TIME_BITS and _FILE_OFFSET_BITS are not independent. You cannot make the former 64 if the latter isn't. I'm rewriting the test to check for these together, in all combinations. We succeed if we detect a combination that makes both time_t and off_t 64 bits. If we don't find such a combination then we at least enable 64 bit off_t alone or 64 bit time_t alone, if we encountered an option which does that.
* build: remove mkdir commands from build steps.Kaz Kylheku2023-08-111-3/+8
| | | | | | | | | | | | | | * Makefile (COMPILE_C_WITH_DEPS, WINDRES): Do not call mkdir. (win/%.res): Express dependency on existence of win subdirectory in the build directory. We use an order-only prerequisite, so that timestamps are not compared. We don't want to be rebuilding objects if the directory they are in has a newer timestamp, which is often the case. (OBJS): Extract the relative directory paths from $(OBJS), and make each directory the target of a rule which creates it. Then, make each target in $(OBJS) dependent (order-only) on the directory into which it will be placed, so before that object is built, the directory gets created with mkdir -p.
* build: remove cruft, simplifying dep generation.Kaz Kylheku2023-08-111-34/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | We get rid of the sed-based processing which produces .v files from .d files. The only purpose of the variable assignments in the .v files ended up being a filter expression in the ABBREVN macro. I think the idea here was to show all the direct prerequisites of the target, suppressing the ones computed by generated dependency rules. * Makefile (ABBREVN): Just use $^ instead filtering out $^ using the $(DEP_$@) computed variable that holds all the dependencies. I don't see an issue. This is only used for linking and it correctly shows the .o files. (DEPGEN): Macro removed. (COMPILE_C_WITH_DEPS): Remove call to DEPGEN, removing an ugly sed step from the compilation of each file. (NL, CM, DEP): Macros removed. (OBJS, EXTRA_OBJS): Directly write rule which makes all objects depend on config.make. (opt/lex.yy.o, opt/txr.o, opt/match.o, opt/parser.o, opt/y.tab.o, dbg/lex.yy.o, dbg/txr.o, dbg/match.o, dbg/parser.o, dbg/y.tab.o): Explicitly write direct rules for these so the parser generation is correctly hooked into the dependency graph.
* unuse-sym: fix in face of use-sym-as.Kaz Kylheku2023-08-103-0/+60
| | | | | | | | | | | | | * lib.c (unuse_sym): A used symbol may now appear in a package under a different name. So if we don't find a symbol under the symbol's name, or find a different symbol, we must try a reverse hash search before giving up. * txr.1: Add notes to use-sym-as that unuse-sym must be used to undo its effect. Add notes to unuse-sym discussing similarities and differences versus unintern. * tests/012/use-as.tl: New test cases.
* New feature: local symbol renaming.Kaz Kylheku2023-08-107-32/+203
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The new function use-sym-as can bring a foreign symbol into a package under a different name, which is not that symbol's name. This is also featured in a new defpackage clause, :use-syms-as. With this simple relaxation in the package system, we don't require package local nicknames, which is more complicated to implement and less ergonomic, because it doesn't actually vanquish the use of ugly package prefixes on clashing symbols. * eval.c (eval_init): Register use-syms-as. * lib.c (use_sym_as): New function, made out of use_sym. (use_sym): Now a wrapper for use_sym_as. * lib.h (use_sym_as): Declared. * stdlib/package.tl (defpackage): Implement :use-syms-as clause. * tests/012/use-as.tl: New file. * txr.1: Documented, * stdlib/doc-syms.tl: Updated.
* compiler/match: eliminate (subtypep (typeof x) y).Kaz Kylheku2023-08-092-2/+3
| | | | | | | | | * stdlib/compiler.tl (compiler comp-fun-form): Recognize the pattern (subtypep (typeof x) y) and rewrite it to (typep x y). * stdlib/match.tl (compile-struct-match): Don't generate the (subtype (typeof x) y) pattern, but (typeof x y).
* new: left-inserting pipeline operators.Kaz Kylheku2023-08-085-20/+83
| | | | | | | | | | | | | | | | | | | * stdlib/op.tl (opip-expand): Take arguments which specify the op and do operators to be inserted. Pass these through the recursive calls. (opip, oand): Pass op and do for the new arguments. (lopip, loand): New macros like opip and oand, but passing lop and ldo to the expander. (lflow): New macro. * autoload.c (op_set_entries): Add autoload entries for lopip, loand and lflow. * tests/012/op.tl: A few new tests. * txr.1: Documented. * stdlib/doc-syms.tl: Regenerated.
* doc: bit ore advice on unused variable diagnotics.Kaz Kylheku2023-08-081-1/+12
| | | | | * txr.1: Mention that @nil can be used in pattern matching to suppress unused variable warnings.
* close-stream: new : protocol from close method.Kaz Kylheku2023-08-074-4/+70
| | | | | | | | | | | | | * stream.c (close_stream): If the underlying method returns the colon symbol :, then keep the cached close_result as nil, so that the method can be called again, but return t to the caller to indicate success. * tests/018/close-delegate.tl: Test case added. * tests/018/close-delegate.expected: Updated. * txr.1: Documented.
* streams: a few close funtions should return t.Kaz Kylheku2023-08-072-1/+4
| | | | | | | | * socket.c (dgram_close): Return t when a descriptor is closed, returning nil only when the object is already in a closed state. * stream.c (dev_null_close, dir_close): Likewise.
* streams: close-stream only caches non-nil result.Kaz Kylheku2023-08-074-3/+28
| | | | | | | | | | | | | | | | | | | | This is motivated by trying to implement a struct delegate stream which performs reference counting in close, in order to close the real stream when the count hits zero. The caching behavior of close-stream is a problem. * stream.c (strm_base_init): Initialize close_result to nil, rather than nao. (strm_base_mark): Don't check close_result for nao. (close_stream): Suppress the call to op->close if close_result has a non-nil value, rather than a value other than nao. * tests/018/close-delegate.tl, * tests/018/close-delegate.expected: New files. * txr.1: Document that only a non-nil return is cached by close-stream.
* compiler: bug: ensure numbers externalized sanely.Kaz Kylheku2023-08-061-0/+3
| | | | | | | | | | | | * stdlib/compiler.tl (dump-to-tlo): To ensure numbers are externalized in such a way that they will be loaded back exactly, we need to set a few special variables. For integers, we want *print-base* to be 10. Numbers printed in other bases cannot be read back correctly. Octal, hex and binary could be, but they would need to be printed with the correct prefixes. For floating-point values, we want to switch to the default print format, and use flo-max-dig for the precision. That one s not not the default value; the default is flo-dig.
* build: speed up bootstrap compilation of stdlib.Kaz Kylheku2023-08-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | The compilation of stdlib from source code (an initial state when no .tlo files exist obtained by "make clean" or "make clean-tlo") is very sensitive to the file order. If the compiler and optimize modules are compiled late, it slows down the build greatly. The compiler mainly executes the code in the files compiler.tl, param.tl, optimize.tl and asm.tl. These should be compiled first, and I empirically determined the best order. * Makefile (STDLIB_EARLY_PATS): Remove error.tlo. The circular dependency involving error.tl doesn't seem to be an issue any more. A while ago I addressed some circular dependencies in stdlib that prevented it from being usable uncompiled; make tests didn't pass with a source-only stdlib. We instead repurpose STDLIB_EARLY_PATS to specify the four modules that should compile first, in their desired order, at least if parallel make is not being used.
* Version 291.txr-291Kaz Kylheku2023-08-066-211/+235
| | | | | | | | | | | | * RELNOTES: Updated. * configure (txr_ver): Bumped version. * stdlib/ver.tl (lib-version): Bumped. * txr.1: Bumped version and date. * txr.vim, tl.vim: Regenerated.
* compiler: bug: constant folding load-time dregs.Kaz Kylheku2023-08-041-1/+2
| | | | | | | | | | | | | | | | The optimizer eliminates calls to pure library functions when all their arguments are D-registers. The call is made at compiled time and its value is inserted into the program as a constant (in a newly allocated D register). The bug is that we can't do this for a D register that is linked to a load-time value, because we don't know its value until run-time. * stdlib/optimize.tl (basic-blocks do-peephole-block): Add a constraint that none of the D registers can be a member of bb.lt-dregs, which holds the list of D registers that are used for load-time values.
* doc: new typo in compat notes.Kaz Kylheku2023-08-031-1/+1
| | | | * txr.1: Fix misspelled "elements" in 289 compatibility notes.
* opip: new special handling of (let ...).Kaz Kylheku2023-08-033-10/+166
| | | | | | | | | | | | | * stdlib/op.tl (sys:opip-single-let-p, sys:opip-let-p): New functions. (sys:opip-expand): Restructure from collect loop to car/cdr recursive form, because the new let operators in opip need access to the rest of the pipeline. Implement let operators. * tests/012/op.tl: New tests. * txr.1: Documented.
* bug: :vars not usable with :counter in @(repeat).Kaz Kylheku2023-08-024-2/+11
| | | | | | | | | | | | | | | | | | | | | | This is a regression due to a March 2016 commit which introduced the ability for :vars in an output-side @(repeat) block to have initial values. The bug has the effect that all arguments in @(repeat) which are conses/lists get duplicated, which messes up the property list structure. * parser.y (expand_repeat_rep_args): Do not unconditionally add reg to the output at the bottom of the loop. A few cases above in the consp(arg) case handle that themselves, and do not continue the loop, so control ends up at the bottom, adding a spurious item. By removing this list_collect, we have to introduce it to just one case which relies on it. * tests/008/repeat.txr, * tests/008/repeat.expected: New files. * y.tab.c.shipped: Updated.
* compiler: bug: disappearing basic block nojoin flag.Kaz Kylheku2023-07-311-0/+1
| | | | | | | | | | | Discovered while experimenting with new optimizations. * stdlib/optimize.tl (basic-blocks join-block): When we join the following block into the current block, we must propagate the nojoin property of the following block. The nojoin property has to do with the last instruction being xend. The joined block has that last instruction and so must be nojoin.
* compiler: bugfix: dangling rlinks after dead code eliminationKaz Kylheku2023-07-311-8/+10
| | | | | | | | | | | | | Discovered while experimenting with new optimizations. * stdlib/optimize.tl (basic-blocks :postinit): Pass t argument to new parameter of basic-blocks link-graph. (basic-blocks link-graph): New parameter indicating whether this is the first call; if false, we reset all the links. (basic-blocks elim-dead-code): This no longer has to reset the links before calling link-graph. But now calls link-graph one more time after the dead code removal so that no dead blocks appear in the graph.
* places: regression in symbol-function place.Kaz Kylheku2023-07-291-5/+5
| | | | | | | | | * stdlib/place.tl (sys:get-fun-getter-setter): The check added recently for a non-bindable sym at the top is completely bogus, and makes it impossible to use trace for methods. The function handles various kinds of function names that are not symbols. The check must be done in the fallback case, where plain symbols are handled.
* Version 290.txr-290Kaz Kylheku2023-07-297-1437/+1546
| | | | | | | | | | | | | | * RELNOTES: Updated. * configure (txr_ver): Bumped version. * stdlib/ver.tl (lib-version): Bumped. * txr.1: Bumped version and date. * txr.vim, tl.vim: Regenerated. * protsym.c: Regenerated.
* unwind: bind *print-circle* to t in error trace.Kaz Kylheku2023-07-281-0/+5
| | | | | | * eval.c (error_trace): Push a new dynamic environment and bind *print-circle* to t. More could be done here like setting object limits.
* compiler: use partition-if for basic block division.Kaz Kylheku2023-07-281-5/+5
| | | | | | | | * stdlib/optimize.tl (basic-blocks :postinit): Calculate the basic block partitions more directly using partition-if, eliminating the calculation of two sequences of indices that have to be merged and then passed to the partition function.
* symbol-function: check symbol argument.Kaz Kylheku2023-07-271-0/+2
| | | | | | | * stdlib/place.tl (sys:get-fun-setter-getter): Throw error if sym isn't a bindable symbol, so that nonsense like (set (symbol-function 3) ...) isn't allowed.
* match: bug: lexical symbol macros neglectedKaz Kylheku2023-07-273-6/+28
| | | | | | | | | | | | | | | | | | When a pattern variable match like @foo references a global symbol macro, that's treated as an existing expression to match, and not a new binding. However, local symbol macros are not treated this way; they are invisible to variable patterns. That is an unintended inconsistency. * stdlib/match.tl (var-list exists): Use lexical-binding-kind rather than lexical-var-p. This returns true for lexical symbol macros also. * tests/011/patmatch.tl: New test cases. * txr.1: Documentation revised to clarify that both global and local symbol macros are considered to be existing variable bindings by pattern matching.
* New functions and fixes in lexical introspection.Kaz Kylheku2023-07-273-37/+161
| | | | | | | | | | | | | | | | | | | | | | * evalc (macro_k): New keyword symbol variable. (lexical_binding_kind, lexical_fun_binding_kind) New functions. (lexical_var_p): Bugfix: if the symbol is a special variable, do not short-circuit to a nil answer. Special variables can be shadowed by symbol macros. The function is now defined in terms of lexical_binding_kind. (lexical_symacro_p, lexical_macro_p): New functions. (lexical_fun_p): Now defined using lexical_fun_binding_kind. (lexical_lisp1_binding): Bugfix: check for special variables; do not report special variables as :var. (eval_init): Initialize macro_k. Register new intrinsics: lexical-binding-kind, lexical-fun-binding-kind, lexical-symacro-p, lexical-macro-p. * txr.1: Documented. * stdlib/doc-syms.tl: Updated.
* tests: match: move file compiling step to end.Kaz Kylheku2023-07-261-6/+6
| | | | | | * tests/011/patmatch.tl: Move the form which compiles the entire file to the end of the file, so that all the interpreted test cases complete before we compile.
* compiler: compress symbol tables also.Kaz Kylheku2023-07-262-31/+46
| | | | | | | | | | | | | | | | | | | | | | | | When functions are optimized away due to constant folding, instead of replacing them with a nil, we now compact the table to close the gaps and renumber the references in the code. * stdlib/compiler.tl (compiler null-stab): Method removed. (compiler compact-dregs): Renamed to compact-dregs-and-syms. Now compacts the symbol table also. This is combined with D-reg compacting because it makes just two passes through the instruction: a pass to identify the used D registers and symbol indices, and then another pass to edit the instructions with the renamed D registers and renumbered symbol indices. (compiler optimize): Remove the call to the null-unused-data on the basic-blocks object; nulling out D regs and symbol table entries is no longer required. Fllow the rename of compact-dregs to compact-dregs-and-syms which is called the same way otherwise. * stdlib/optimize.tl (basic-blocks null-unused-data): No longer used method removed.
* compiler: compact D registers.Kaz Kylheku2023-07-252-16/+34
| | | | | | | | | | | | | | | | | | | | | | | | We now have some constant folding in the optimizer too, not just in the front end compiler pass. This is leaving behind dead D registers that are not referenced in the code. Let's compact the D register table to close the gap. * stdlib/compiler.tl (compiler get-dreg): In this function we no longer check that we have allocated too many D registers. We let the counter blow past %lev-size%. Because this creates the fighting chance that the compaction of D regs will reduce their number to %lev-size% or less. By doing this, we allow code to be compilable that otherwise would not be: code that allocates too many D regs which are then optimized away. (compiler compact-dregs): New function. Does all the work. (compiler optimize): Compact the D regs at optimization level 5 or higher. (compile-toplevel): Check for an overflowing D reg count here, after optimization. * stdlib/optimize.tl (basic-blocks null-unused-data): Here, we no longer have to do anything with the D registers.
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