Also, report an error if a string type is misused as an argument (for
foreign procedures) or result (for foreign callables) with
`__collect_safe`.
original commit: cdbfa3d86cb0719bf0979b3fe0aa5c4383282b77
So the reduced version checks that p is a procedure
Also make the same change for #2%for-each.
cp0.ss, 4.ms
original commit: 5caa11c85bc74c0af25ac215d48b7f5f0c1d3e42
commonizatio pass and support for specifying default record
equal and hash procedures:
- more staid and consistent Mf-cross main target
Mf-cross
- cpletrec now replaces the incoming prelexes with new ones so
that it doesn't have to alter the flags on the incoming ones, since
the same expander output is passed through the compiler twice while
compiling a file with macro definitions or libraries. we were
getting away without this just by luck.
cpletrec.ss
- pure? and ivory? now return #t for a primref only if the prim is
declared to be a proc, since some non-proc prims are mutable, e.g.,
$active-threads and $collect-request-pending.
cp0.ss
- $error-handling-mode? and $eol-style? are now properly declared to
be procs rather than system state variables.
primdata.ss
- the new pass $check-prelex-flags verifies that prelex referenced,
multiply-referenced, and assigned flags are set when they
should be. (it doesn't, however, complain if a flag is set
when it need not be.) when the new system parameter
$enable-check-prelex-flags is set, $check-prelex-flags is
called after each major pass that produces Lsrc forms to verify
that the flags are set correctly in the output of the pass.
this parameter is unset by default but set when running the
mats.
cprep.ss, back.ss, compile.ss, primdata.ss,
mats/Mf-base
- removed the unnecessary set of prelex referenced flag from the
build-ref routines when we've just established that it is set.
syntax.ss, compile.ss
- equivalent-expansion? now prints differences to the current output
port to aid in debugging.
mat.ss
- the nanopass that patches calls to library globals into calls to
their local counterparts during whole-program optimization now
creates new prelexes and sets the prelex referenced, multiply
referenced, and assigned flags on the new prelexes rather than
destructively setting flags on the incoming prelexes. The
only known problems this fixes are (1) the multiply referenced
flag was not previously being set for cross-library calls when
it should have been, resulting in overly aggressive inlining
of library exports during whole-program optimization, and (2)
the referenced flag could sometimes be set for library exports
that aren't actually used in the final program, which could
prevent some unreachable code from being eliminated.
compile.ss
- added support for specifying default record-equal and
record-hash procedures.
primdata.ss, cmacros.ss, cpnanopass.ss, prims.ss, newhash.ss,
gc.c,
record.ms
- added missing call to relocate for subset-mode tc field, which
wasn't burning us because the only valid non-false value, the
symbol system, is in the static generation after the initial heap
compaction.
gc.c
- added a lambda-commonization pass that runs after the other
source optimizations, particularly inlining, and a new parameter
that controls how hard it works. the value of commonization-level
ranges from 0 through 9, with 0 disabling commonization and 9
maximizing it. The default value is 0 (disabled). At present,
for non-zero level n, the commonizer attempts to commonize
lambda expressions consisting of 2^(10-n) or more nodes.
commonization of one or more lambda expressions requires that
they have identical structure down to the leaf nodes for quote
expressions, references to unassigned variables, and primitives.
So that various downstream optimizations aren't disabled, there
are some additional restrictions, the most important of which
being that call-position expressions must be identical. The
commonizer works by abstracting the code into a helper that
takes the values of the differing leaf nodes as arguments.
the name of the helper is formed by concatenating the names of
the original procedures, separated by '&', and this is the name
that will show up in a stack trace. The source location will
be that of one of the original procedures. Profiling inhibits
commonization, because commonization requires profile source
locations to be identical.
cpcommonize.ss (new), compile.ss, interpret.ss, cprep.ss,
primdata.ss, s/Mf-base,
mats/Mf-base
- cpletrec now always produces a letrec rather than a let for
single immutable lambda bindings, even when not recursive, for
consistent expand/optimize output whether the commonizer is
run or not.
cpletrec.ss,
record.ms
- trans-make-ftype-pointer no longer generates a call to
$verify-ftype-address if the address expression is a call to
ftype-pointer-address.
ftype.ss
original commit: b6a3dcc814b64faacc9310fec4a4531fb3f18dcd
- fixed substring-fill! and vector-fill! to return void, reflecting the
documented return value of unspecified value. Also changes substring-fill!
to use define-who instead of repeating 'substring-fill! in all the error
messages.
5_4.ss, 5_6.ss
original commit: 3f65788b5422693f3648a9e2fe575f464eb31ccd
compilation now treat a malformed object file as if it were
not present and needs to be regenerated. A malformed object
file (particularly a truncated one) might occur if the compiling
processes is killed or aborts before it has a chance to delete
a partial object file.
syntax.ss,
7.ms
original commit: c2cb8c79a925c0eb2f9d589e3a497712800bd1dc
entries x and y in the list produced by the sort call, if x's
bfp = y's bfp, x should come before y if x's efp < y's efp.
The idea is that enclosing entries should always come later
in the list. this affects only languages where two expressions
can start at the same character position.
pdhtml.ss
expanded capability of ez-grammar with support for simpl
parsing of binary operators w/precedence and associativity
and automatically generated markdown grammar descriptions.
ez-grammar-test.ss now also doubles as a test of pdhtml for
algebraic languages.
mats/examples.ms,
examples/ez-grammar.ss, examples/ez-grammar-test.ss,
examples/Makefile
original commit: 53b8d16a1e86f3956585dbec0c7b573e485f7844
test and ephemeron gc test while resensitizing the former
8.ms, 4.ms
various formatting and comment corrections
workarea,
s/Mf-base, bytevector.ss, cpnanopass.ss, date.ss,
5_6.ms, examples.ms
original commit: 19e2505fc6477fce2d1d0e61187bd504b58ea994
procedures with large numbers of variables:
- added pass-time tracking for pre-cpnanopass passes to compile.
compile.ss
- added inline handler for fxdiv-and-mod
cp0.ss, primdata.ss
- changed order in which return-point operations are done (adjust
sfp first, then store return values, then restore local saves) to
avoid storing return values to homes beyond the end of the stack
in cases where adjusting sfp might result in a call to dooverflood.
cpnanopass.ss, np-languages.ss
- removed unused {make-,}asm-return-registers bindings
cpnanopass.ss
- corrected the max-fv value field of the lambda produced by the
hand-coded bytevector=? handler.
cpnanopass.ss
- reduced live-pointer and inspector free-variable mask computation
overhead
cpnanopass.ss
- moved regvec cset copies to driver so they aren't copied each
time a uvar is assigned to a register. removed checks for
missing register csets, since registers always have csets.
cpnanopass.ss
- added closure-rep else clause in record-inspector-information!.
cpnanopass.ss
- augmented tree representation with a constant representation
for full trees to reduce the overhead of manipulating trees or
subtress with all bits set.
cpnanopass.ss
- tree-for-each now takes start and end offsets; this cuts the
cost of traversing and applying the action when the range of
applicable offsets is other than 0..tree-size.
cpnanopass.ss
- introduced the notion of poison variables to reduce the cost of
register/frame allocation for procedures with large sets of local
variables. When the number of local variables exceeds a given
limit (currently hardwired to 1000), each variable with a large
live range is considered poison. A reasonable set of variables
with large live ranges (the set of poison variables) is computed
by successive approximation to avoid excessive overhead. Poison
variables directly conflict with all spillables, and all non-poison
spillables indirectly conflict with all poison spillables through
a shared poison-cset. Thus poison variables cannot live in the
same location as any other variable, i.e., they poison the location.
Conflicts between frame locations and poison variables are handled
normally, which allows poison variables to be assigned to
move-related frame homes. Poison variables are spilled prior to
register allocation, so conflicts between registers and poison
variables are not represented. move relations between poison
variables and frame variables are recorded as usual, but other
move relations involving poison variables are not recorded.
cpnanopass.ss, np-languages.ss
- changed the way a uvar's degree is decremented by remove-victim!.
instead of checking for a conflict between each pair of victim
and keeper and decrementing when the conflict is found, remove-victim!
now decrements the degree of each var in each victim's conflict
set. while this might decrement other victims' degrees unnecessarily,
it can be much less expensive when large numbers of variables are
involved, since the number of conflicts between two non-poison
variables should be small due to the selection process for
(non-)poison variables and the fact that the unspillables introduced
by instruction selection should also have few conflicts. That
is, it reduces the worst-case complexity of decrementing degrees
from O(n^2) to O(n).
cpnanopass.ss
- took advice in compute-degree! comment to increment the uvars in
each registers csets rather than looping over the registers for
each uvar asking whether the register conflicts with the uvar.
cpnanopass.ss
- assign-new-frame! now zeros out save-weight for local saves, since
once they are explicitly saved and restored, they are no longer
call-live and thus have no save cost.
cpnanopass.ss
- desensitized the let-values source-caching timing test slightly
8.ms
- updated allx, bullyx patches
patch*
original commit: 3a49d0193ae57b8e31ec6a00b5b49db31a52373f
redundant keys and expands into exclusive-cond rather than cond.
it catches references to => before expanding into exclusive-cond
to avoid supporting => as an undocumented and useless extension
of the case syntax. the r6rs:case and case macros now require
multiple clauses rather than leaving the enforcement to exclusive-cond,
and the exclusive-cond macro now requires multiple clauses rather
than leaving the enforcement to cond.
syntax.ss,
4.ms, root-experr*, patch*
original commit: 303921d8515b101c558a056dcf9c05f7cad97f4a
an existing setting will not interfere with the build process, and
added a note to BUILDING that CHEZSCHEMELIBDIRS should be unset in
Version 9.5 and before.
s/Mf-base, mats/Mf-base, BUILDING
original commit: 1cccd56693911a38ece784da677e35f724950700
scheme.1.in, newrelease
- removed version update of no-longer-existing bldnt.bat. "fixed"
sed patterns to replace \? with * for the benefit of the deficient
mac sed.
newrelease
- updated version to 9.5
bintar BUILDING NOTICE makefiles/Mf-install.in scheme.1.in
c/Makefile.i3nt c/Makefile.a6nt c/Makefile.ti3nt c/Makefile.ta6nt
workarea c/scheme.rc s/7.ss s/cmacros.ss
release_notes/release_notes.stex csug/csug.stex
- updated release notes and fixed user's guide overfull hbox.
release-notes.stex, syntax.stex
- updated install target to do something more sensible
release_notes/Makefile
original commit: adb3b7bb22ddaa1ba91b98b6f4a647427c3a4d9b
in tail and predicate context and added regression tests. Thanks to
@marcomaggi for reporting the bug and @yjqww6 for providing a
simplified test and finding the initial solution.
cpnanopass.ss,
3.ms
original commit: 28f31d84b6c45e2fa701655e9131801dd603d925
Add optional beginning-line and beginning-column components to a
source object, so that line and column information can be recorded
independent of the file. Add `locate-source-object-source` to use
the recorded information. Add a cache for `locate-source` as enabled by
the `use-cache?` optional argument, which can avoid compilation times
that are quadratic in the number of `let-values` or `define-values`
forms.
original commit: b36fab81d5041a54ce01a422395eee79d2f930bc
Revert the use of ephemeron pairs in weak hashtables, since the
difference is visible via guardians. Add hashtable based on ephemerons
(to avoid key-in-value problems) as an explicit variant.
original commit: 31ac6d78592e1a9ba6bfbe802260e3d56d4cf772
8-byte read instead of a 4-byte read to pick up the 4 highest-order
bytes of a little-endian flonum, potentially reading past the end of
mapped memory for flonums produced by taking the imaginary part of an
inexact complexnum (which, unlike other flonums, are not aligned on
16-byte boundaries). The 8-byte load would also have failed to produce
correct results on 64-bit big-endian machines (of which we presently
have none) because the offsets passed to flonum-extractor assume the
bits are in the lowest-order 4 bytes of the extracted field.
cp0.ss,
misc.ms,
release_notes.stex
original commit: 97bd75bcedbcf32b77c59615a638ea1528ebe26b
Accesses existing-but-hidden DST information in date records,
and adds support for getting a name of the current time zone
when a time zone offset is not explicitly provided.
original commit: 3c8be62d12a8197018fb6c5aae182fd75da14fe8
the expected evaluation order in one of the mats; removed the
corresponding equivalent-expansion tests.
cp0.ss,
4.ms
rebuild boot files
original commit: 63c6ae5c2d4354a984bfc210f061c2c2123f0439
extend the reductions for map and for-each when the arguments are
explicit lists like (list 1 2 3 ...) or '(1 2 3 ...).
cp0.ss 4.ms
original commit: 4522ccdabd461370ad2d3fa91a92be0e6798d4d8
To drop the expression, check that procedure has the correct
arity and is discardable or unsafe.
Also add a simplification for for-each with empty lists
with optimization level 2.
cp0.ss, 4.ms, primdata.ss
original commit: 7ad035a3bd63675a1b40106c841669e04e3299f2
bytevector-immutable-flag in computation of type-immutable-bytevector
cmacros.ss
- reallocated typed-object types, using previously unused tag #b010
for strings and giving bytevectors both #b001 and #b101 (the
latter for immutable bytevectors) so that the maximum bytevector
length on 32-bit machines is once again the most-positive fixnum.
treating bytevectors rather than strings or fxvectors (or even
vectors) special in this regard is appropriate since the maximum
number of bytes in a bytevector is maximum-length x 1 rather than
maximum-length x 4 for strings, fxvectors, and vectors on 32-bit
machines. with this change on 32-bit machines, a vector can
occupy up to 1/2 of virtual memory, strings and fxvectors 1/4,
and bytevectors 1/8.
cmacros.ss
- remade boot files
original commit: 0694b3a5223ab937379e54079bc88d57309dc51f
arguments. cp0 optimizes away a number of additional equality
operations at optimize-level 3 (including bytevector=?) when
applied to the same variable references, as it already did for
eq?, eqv?, and equal?, at all optimize levels.
cpnanopass.ss, cp0.ss, primdata.ss,
cp0.ms
- updated bullyx patches
patch*
- updated release notes and tweaked user's guide.
release-notes.stex, objects.stex
original commit: e90c39a72563eafa4fccaf1d197060bf20aa552f
to simplify ($fxu< (most-positive-fixnum) e) => (fx< e 0) so we
don't have any incentive in special casing length checks where
the maximum length happens to be (most-positive-fixnum).
5_4.ss, 5_6.ss, bytevector.ss, cmacros.ss, cp0.ss, cpnanopass.ss,
mkheader.ss, primdata.ss, prims.ss,
fasl.c, gc.c, types.h
root-experr*, patch*
original commit: 9eb63deda025fd4560b54746b21a881c01af46d6
is a fixnum and added meta-asserts to verify that it is in a couple of
others, to facilitate future changes to vector typing. vectors are
now treated essentially like fxvectors, strings, and bytevectors.
cmacros.ss, cpnanopass.ss, prims.ss, mkheader.ss,
alloc.c, gc.c, scheme.c
original commit: 564542d32bbae6b33cef808613238d5a4a2a8ee2
floating-point register arguments as required for varargs functions
by the System V ABI.
x86_64.ss,
foreign.ms
remade boot files
original commit: c5b6fe968f890bbef3488d570756cbe8da211326
Check both the beginning file pointer (bfp) and end file pointer (efp)
of the source location associated with a profile counter when updating
its count.
Assuming that each expression has a unique bfp with respect to profiling
seems to give accurate execution counts for s-expression-based source
locations as in Scheme, but causes problems when targeting other kinds
of syntax. For instance, a C-style function call, referencing the called
function by name, such as "fn(arg)", can logically have profile counters
associated with 1) the function name reference ("fn") and 2) the entire
function call expression ("fn(arg)"), both of which begin at the same
source location. Only the bfp is checked when updating profile counters,
so the two source locations are conflated, and only one counter is
incremented, which gives inaccurate execution counts for both locations;
approximately twice as many for one, and zero for the other.
original commit: d364b05c3c9cd2b299fc20a6f5ec255ab7bd6718
4.ms, root-experr-compile-0-f-f-f
- added print-extended-identifier parameter. when #t, symbols like
1+ and +++ print without escapes.
priminfo.ss, print.ss,
6.ms
original commit: 603019ea82afda1926462214576ef92df15e43c8
that calls the current value of base-exception-handler so the handler
can be overridden, as we do in our own make files.
cafe.ss,
7.ms
original commit: 99b763e30d22b205106ef9a84ea2e0a928fd0b30
form for later passes to choke on. also fixed cp0 to print the correct
name for cpvalid when it does this.
cpvalid.ss, cp0.ss,
misc.ms
- updated the prototype for s_ee_write_char to match the definition
expeditor.c
- updated LOG and release_notes
- rebuilt boot files due to s-directory changes
original commit: 50aa8b34774a9e65e96481ae329a3f329fad7aca
except that combining characters are not treated correctly for
line-wrapping. this addresses github issue #32 and part of issue #81.
c/expeditor.c, s/expeditor.ss
original commit: 87d4811781d7e9183f7710aa6a809b850a38454f
- added a cast to eliminate warnings in c/number.c
- fixed bug in Windows version of directory-separator-predicate in s/6.ss when path-* procedures are passed a path that is not a string.
- fixed bug in s/cp0.ss on Windows with $foreign-wchar?.
- fixed spelling of non-existent
original commit: dd1b741f7572cb0d5a6210c7c796aee7c4026040
* Add some simple reset CSS
* Add some simple base CSS (which includes making the default font family "monospace")
* Change the header on the Profile page
* Add a header to the source file pages
* Desaturate the default profile palette
* Make various other small tweaks, e.g.:
* Change sizing from em's to rem's
* Change H3s to H1s and Ps to H2s
* Change to padding
* etc.
* Update csug with the new default profile palette and some new screenshots (and change occurrences of "css" to "CSS")
original commit: f7d7109de6845f6e91d4a7d77063d46e7e0dff3f
files that no longer exist, which was getting in the way of creating links
for files that do exist. Also updated the build batch file for Windows to
compile the nanopass framework separately before building the rest of the
scheme compiler and libraries.
s/Mf-{a6,i3,ta6,ti3}nt, s/bldnt.bat,
mats/Mf-{a6,i3,ta6,ti3}nt
- updated the read me to include a link to the Chez Scheme project page.
README.md
original commit: 969fbf3b69f4ac9729847bae80dab92464b6d08c
* Mark the files as HTML5 rather than HTML4.
* Use target attributes rather than onclick events to open links in specific windows.
* Add a missing table row element.
* Replace the deprecated name attribute with an id attribute (and replace the anchors with spans).
* Replace the deprecated valign attribute with a style attribute.
original commit: bcaba9db283693ee6d4e79e82ba0ff60ee90ba5c
line from the wpo file (if it has one) to the object file.
compile.ss,
7.ms
- stex is now a submodule. csug/Makefile and release_notes/Makefile
set and use the required Scheme and STEXLIB variables accordingly.
they default the machine type to a6le, but this can be overridden
and is by the generated top-level Makefile. the generated top-level
Makefile now has a new docs target that runs make in both csug and
release_notes, and an updated distclean target that cleans the same.
the annoying csug Makefile .fig.pdf rule redefinition is now gone.
copyright.stex and csug.stex now list May 2016 as the revision month
and date; this will have to be updated for future releases.
configure, makefiles/Makefile.in,
csug/Makefile, copyright.stex, csug.stex,
release_notes/Makefile
- rebuilt the boot files
original commit: 4bd78a692dd4ca2f88af5d404fd0993a2d141e7b
obviated scale_float in the process.
number.c,
ieee.ms
- fixed 0eNNNN for large NNNN to produce 0.0 rather than infinity
strnum.ss,
5_3.ms
- the reader now raises an exception with condition type implementation
restriction (among the other usual lexical condition types), and
string->number now raises #f, for #e<m>@<a>, where <m> and <a> are
nonzero integers, since Chez Scheme can't represent polar numbers other
than 0@<a> and <m>@0 exactly. <m>@<a> still produces an inexact result,
i.e., we're still extending the set of inexact numeric constants beyond
what R6RS dictates. doing this required a rework of $str->num, which
turned into a fairly extensive rewrite that fixed up a few other minor
issues (like r6rs:string->number improperly allowing 1/2e10) and
eliminated the need for consumers to call $str->num twice in cases
where it actually produces a number. added some related new tests,
including several found lacking by profiling. added a couple of
checks to number->string whose absence was causing argument errors to
be reported by other routines.
strnum.ss, exceptions.ss, read.ss
5_3.ms, 6.ms, root-experr*, patch*
- added pdtml flag, which if set to t causes profile-dump-html to be
called at the end of a mat run.
mats/Mf-base
original commit: 03f2fe86171b0fd096238280b351ce365c701450
left shift to avoid counting on the behavior of << on negative numbers,
which is undefined in C.
mkheader.ss
- Fixed a couple of casts, one harmless and the other causing
Sinteger64_value to return 0 for the most-negative I64 on 32-bit
builds.
number.c
- The configure-generated Makefile distclean target no longer removes
zlib and nanopass, since they are logically part of the git clone.
It does run make distclean in zlib.
makefiles/Makefile.in
original commit: 42e6fed96d69fa17cfcd9cdcec101aaa36ba4512
