On Fri, 5 Apr 2024 12:17:17 GMT, Hamlin Li wrote:
>> Hi,
>> Can you help to review the patch?
>> This pr is based on previous work and discussion in [pr
>> 16234](https://github.com/openjdk/jdk/pull/16234), [pr
>> 18294](https://github.com/openjdk/jdk/pull/18294).
>>
>> Compared with previous
On Thu, 26 Oct 2023 16:46:04 GMT, Andrew Haley wrote:
>> A bug in GCC causes shared libraries linked with -ffast-math to disable
>> denormal arithmetic. This breaks Java's floating-point semantics.
>>
>> The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522
>>
>> One solution is to sav
On Thu, 26 Oct 2023 10:39:04 GMT, Andrew Haley wrote:
> do you have any suggestion about where to move the remaining code that's in
> stubRoutines.cpp?
As it is now, `globalDefinitions.hpp/cpp` looks the most appropriate one to me.
You could create new header file for it (under `share/utiliti
On Thu, 19 Oct 2023 09:33:52 GMT, Andrew Haley wrote:
> I took them out because of a potential backwards-compatibility breakage.
Ok, I checked the removed code
(https://github.com/openjdk/jdk/pull/10661/commits/b817d4757c78594be5960ee0be27013e2588d30a)
and agree it is not needed here.
`Resto
On Wed, 18 Oct 2023 08:50:13 GMT, Andrew Haley wrote:
>> Meta-question and apologies if this was covered before, but why is this
>> logic being added to stubRoutines.cpp?
> Because tha'ts where @iwanowww asked me to put it. I don't much care.
The constants were duplicated in multiple places (i
On Wed, 11 Oct 2023 20:58:23 GMT, Srinivas Vamsi Parasa
wrote:
>> The goal of this PR is to address the follow-up comments to the SIMD
>> accelerated sort PR (#14227) which implemented AVX512 intrinsics for
>> Arrays.sort() methods.
>> The proposed changes are:
>>
>> 1) Restriction of the AVX
On Wed, 11 Oct 2023 23:38:05 GMT, Sandhya Viswanathan
wrote:
>> Also, for on-heap case the fallback implementation is equivalent to
>> intrinsified case only when offset points at the 0th element of the array.
>
> @iwanowww Yes, you are late to the party :). The fallback implementation
> could
On Wed, 11 Oct 2023 23:25:22 GMT, Vladimir Ivanov wrote:
>> Srinivas Vamsi Parasa has updated the pull request with a new target base
>> due to a merge or a rebase. The pull request now contains 45 commits:
>>
>> - fix code style and formatting
>> -
On Thu, 5 Oct 2023 23:36:48 GMT, Srinivas Vamsi Parasa wrote:
>> The goal is to develop faster sort routines for x86_64 CPUs by taking
>> advantage of AVX512 instructions. This enhancement provides an order of
>> magnitude speedup for Arrays.sort() using int, long, float and double arrays.
>>
On Wed, 11 Oct 2023 20:58:23 GMT, Srinivas Vamsi Parasa
wrote:
>> The goal of this PR is to address the follow-up comments to the SIMD
>> accelerated sort PR (#14227) which implemented AVX512 intrinsics for
>> Arrays.sort() methods.
>> The proposed changes are:
>>
>> 1) Restriction of the AVX
On Wed, 11 Oct 2023 17:29:11 GMT, Andrew Haley wrote:
>> A bug in GCC causes shared libraries linked with -ffast-math to disable
>> denormal arithmetic. This breaks Java's floating-point semantics.
>>
>> The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522
>>
>> One solution is to sav
On Wed, 11 Oct 2023 18:43:31 GMT, Thomas Stuefe wrote:
>> `thresh` is volatile. What more is needed?
>
> Argh, sorry, missed that volatile.
And I was confused at first why there's a volatile on `tresh`. A short comment
describing the intentions would definitely help here.
-
PR Rev
On Thu, 6 Apr 2023 10:54:18 GMT, Per Minborg wrote:
>> API changes for the FFM API (third preview)
>>
>> Specdiff:
>> https://cr.openjdk.org/~pminborg/panama/21/v1/specdiff/overview-summary.html
>>
>> Javadoc:
>> https://cr.openjdk.org/~pminborg/panama/21/v1/javadoc/java.base/module-summary.htm
On Fri, 17 Mar 2023 10:31:46 GMT, Serguei Spitsyn wrote:
>> This is needed for performance improvements in support of virtual threads.
>> The update includes the following:
>>
>> 1. Refactored the `VirtualThread` native methods:
>> `notifyJvmtiMountBegin` and `notifyJvmtiMountEnd` =
On Wed, 12 Oct 2022 17:00:15 GMT, Andrew Haley wrote:
>> A bug in GCC causes shared libraries linked with -ffast-math to disable
>> denormal arithmetic. This breaks Java's floating-point semantics.
>>
>> The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522
>>
>> One solution is to sav
On Wed, 26 Oct 2022 17:10:00 GMT, David Holmes wrote:
> At most an expanded -Xcheck:jni check for FP-state manipulation, with an
enhanced/fixed RestoreMXCSROnJNICalls is in order IMVHO.
FTR both `-Xcheck:jni` and `-XX:+RestoreMXCSROnJNICalls` already catch the
problematic case being discussed.
On Wed, 12 Oct 2022 17:00:15 GMT, Andrew Haley wrote:
>> A bug in GCC causes shared libraries linked with -ffast-math to disable
>> denormal arithmetic. This breaks Java's floating-point semantics.
>>
>> The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522
>>
>> One solution is to sav
On Wed, 12 Oct 2022 17:00:15 GMT, Andrew Haley wrote:
>> A bug in GCC causes shared libraries linked with -ffast-math to disable
>> denormal arithmetic. This breaks Java's floating-point semantics.
>>
>> The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522
>>
>> One solution is to sav
On Wed, 12 Oct 2022 17:00:15 GMT, Andrew Haley wrote:
>> A bug in GCC causes shared libraries linked with -ffast-math to disable
>> denormal arithmetic. This breaks Java's floating-point semantics.
>>
>> The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522
>>
>> One solution is to sav
On Wed, 12 Oct 2022 17:00:15 GMT, Andrew Haley wrote:
>> A bug in GCC causes shared libraries linked with -ffast-math to disable
>> denormal arithmetic. This breaks Java's floating-point semantics.
>>
>> The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522
>>
>> One solution is to sav
On Wed, 12 Oct 2022 17:00:15 GMT, Andrew Haley wrote:
>> A bug in GCC causes shared libraries linked with -ffast-math to disable
>> denormal arithmetic. This breaks Java's floating-point semantics.
>>
>> The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522
>>
>> One solution is to sav
On Wed, 12 Oct 2022 17:00:15 GMT, Andrew Haley wrote:
>> A bug in GCC causes shared libraries linked with -ffast-math to disable
>> denormal arithmetic. This breaks Java's floating-point semantics.
>>
>> The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522
>>
>> One solution is to sav
On Thu, 13 Oct 2022 07:47:20 GMT, Andrew Haley wrote:
> The problem is that this bug is very insidious: the user probably doesn't
> know that there's anything wrong, and almost certainly has no idea that it's
> anything to do with JNI.
I'm still trying to grasp why the current problem is somet
On Wed, 12 Oct 2022 20:35:09 GMT, Maurizio Cimadamore
wrote:
> Note also that this specific problem is triggered by dlopen itself, because
> certain libraries might have some "bad" (from the perspective of JVM)
> initialization code.
... and it leads to another question whether the JVM itself
On Wed, 12 Oct 2022 17:00:15 GMT, Andrew Haley wrote:
>> A bug in GCC causes shared libraries linked with -ffast-math to disable
>> denormal arithmetic. This breaks Java's floating-point semantics.
>>
>> The bug is https://gcc.gnu.org/bugzilla/show_bug.cgi?id=55522
>>
>> One solution is to sav
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