On 2018-12-25 16:19, Jakub Vaněk wrote:
Hi,
please review this webrev. It is a successor of the softfloat-3 [patch]
thread (first email
http://mail.openjdk.java.net/pipermail/hotspot-runtime-dev/2018-November/031311.html
)
Changes since the last patch (v6):
- renamed --with-softloat* to --with-sflt* (it is more compact and it
corresponds to the old --with-sflt-lib=... option)
- license is now obtained via --with-sflt-license switch (so it is not
included in OpenJDK source tree)
- updated documentation (slight rewording, added the license option)
- checks for default --with/--without behavior are in place again
(I forgot them when I changed the way the library is detected)
- added a simple testcase - I found a disrepancy between softfloat and
system function behavior. When a float with bits 0x003FFFFF is
added to 0x00000001, the correct result is 0x00400000, but the
default software floating point implementation returns 0x00000000.
However I'm not sure where to put this test - now it is in
test/hotspot/jtreg/compiler/floatingpoint.
- comments in code refer to CR 6757269 and newly JDK-8215902 too.
I have created a repository with SoftFloat-3e with build configuration
specifically for OpenJDK on armel:
https://github.com/ev3dev-lang-java/softfloat-openjdk
I can add a link to it to the documentation.
Bug: https://bugs.openjdk.java.net/browse/JDK-8215902
Webrev: http://cr.openjdk.java.net/~jakvanek/8215902/webrev.02/
Hi Jakub,
In general this looks good.
Some comments:
I agree with Erik that you can add a link to your github project;
compiling SoftFloat is outside the scope of the OpenJDK build
instructions, but it can sure be helpful to lower the bar for users
wanting to do that. Just one question: any particular reason you didn't
create your github repo by forking the official
https://github.com/ucb-bar/berkeley-softfloat-3? That way, it would have
been easy for users to see that you were not adding any malicious or
suspicious code to the original SoftFloat distribution.
On the other hand, I think the link to
http://mail.openjdk.java.net/pipermail/aarch32-port-dev/2016-November/000611.html
is unnecessary and just creates clutter in the documentation. Please
remove it.
/Magnus
CI build:
https://ci.adoptopenjdk.net/view/ev3dev/job/openjdk12_build_ev3_linux/67/
Cheers,
Jakub
