changes in sbcl-2.1.10 relative to sbcl-2.1.9:
* incompatible change: simd-pack without a specific element-type is no
longer treated as containing integers. A type must be supplied for VOPs to
work on such values.
* minor incompatible change: the list form of the FUNCTION type specifier
does not allow * as any argument type, but does allow * as a placeholder
for wholly unspecified arguments when specifying the value(s) type.
* minor incompatible change: the default (Lisp) toplevel option parser
throws an error if it encounters an option which was intended to be used
and removed by the C runtime. (lp#1945081, reported by Luke Gorrie)
* new feature: there is now a defined interface for defining foreign
callable functions, which can be used for passing callbacks to foreign
functions or for calling Lisp code from the foreign world as a shared
library (preliminary support). See the revised manual section "Calling
into Lisp From C" for more details.
* enhancement: arg-count mismatches in self-calls in defmethod are reported.
(lp#1912436, reported by 3b)
* enhancement: the SB-CLTL2 contrib now returns type information for
generated structure accessors. (lp#1934859, reported by SATO shinichi)
* optimization: code generation is improved for modular arithmetic involving
signed operations.
* platform support:
** x86-64 machine code emitter crash when attempting to assemble some
vector instructions. (lp#1945975, thanks to Marco Heisig)
** conditional move instructions are now supported on arm64.
** a number of new peephole optimizations have been implemented on arm64.
** arm64 on Darwin now uses gcc-compatible thread-local storage.
* bug fix: compiler notes are no longer emitted when compiling FORMATTER
forms, including when implicitly triggered on a constant string argument
to FORMAT. (lp#1946246, reported by SATO shinichi)
* bug fix: a compiler error when attempting to compile a call to AREF with
too many dimensions. (lp#1902985)
* bug fix: harmonize the behaviour of SLOT-BOUNDP on non-standard-objects
between the various ways in which it can be called. (lp#732229, reported
by Zach Beane)
* bug fix: FTRUNCATE and similar functions are now more careful about
deriving facts about the sign of zero they might return. (lp#1732009,
reported by Paul Dietz)