Summary
This release does not have any user-visible changes. It consists of
a reimplementation of the Int64.int and Word64.word types.
With this new implementation in place, we expect to rebind the
LargeWord, FixedInt, and Position structures to 64-bit
implementations in the next release.
Details
Installation
While the installer for 110.88 works on macOS 10.14 Mojave, building from source requires some extra steps.
Compiler
Previously, 64-bit numbers were represented as pairs of 32-bit words
and the Int64 and Word64 Basis Library structures were built on this
implementation. While the compiler supported 64-bit literals, the
compiler translated these to pairs of 32-bit words when converting
to FLINT.
In order to support 64-bit targets, it is desirable to make 64-bit
numbers a primitive type (just like Int32.int). In this version,
we have replaced the old implementation of the Int64 and Word64
modules with compiler primops. A new pass, Num64Cnv, that runs
before closure conversion is used to expand 64-bit operations into
32-bit operations on 32-bit targets. While the main purpose of
this change is to make porting to 64-bit targets easier, the new
implementation of Int64.int and Word64.word is faster and
more space efficient than before.
Supported systems
We believe that SML/NJ will build and run on the following systems, but have only tested some of them:
| Architecture | Operating System | Status |
|---|---|---|
Power PC |
Mac OS X 10.5 (Leopard) |
|
AIX |
||
|
||
Sparc |
Solaris |
|
Linux |
||
|
||
x86 (32-bit) |
Mac OS X 10.6 (Snow Leopard) |
|
Mac OS X 10.7 (Lion) |
||
Mac OS X 10.8 (Mountain Lion) |
||
Mac OS X 10.9 (Mavericks) |
||
Mac OS X 10.10 (Yosemite) |
||
Mac OS X 10.11 (El Capitan) |
||
macOS 10.12 (Sierra) |
Tested |
|
macOS 10.13 (High Sierra) |
Tested |
|
macOS 10.14 (Mojave) |
Tested |
|
Ubuntu 16.04.3 LTS |
Tested |
|
Other Linux variants |
||
BSD variants |
||
Windows 7 |
||
Windows 10 |
||
Cygwin (32-bit) |
A note about 64-bit support
Apple is in the process of deprecating 32-bit support in macOS. With macOS 10.14 Mojave, compiling 32-bit applications, such as the SML/NJ runtime system, requires using an older SDK. The SML/NJ installer, however, works without issue on macOS 10.14 Mojave.
We have been working on 64-bit support since 110.82 we expect to have it in place before the release of macOS 10.15.