JDK-8283894 : Intrinsify compress and expand bits on x86
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: tbd
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • CPU: x86
  • Submitted: 2022-03-29
  • Updated: 2022-10-24
  • Resolved: 2022-06-06
The Version table provides details related to the release that this issue/RFE will be addressed.

Unresolved : Release in which this issue/RFE will be addressed.
Resolved: Release in which this issue/RFE has been resolved.
Fixed : Release in which this issue/RFE has been fixed. The release containing this fix may be available for download as an Early Access Release or a General Availability Release.

To download the current JDK release, click here.
JDK 19
19 b26Fixed
Related Reports
Blocks :  
JDK-8283892 - Compress and expand bits
Relates :  
JDK-8285281 - [x86] Add C2 mid-end and back-end implementation for COMPRESS_BITS and EXPAND_BITS operations
Relates :  
JDK-8287851 - C2 crash: assert(t->meet(t0) == t) failed: Not monotonic
Relates :  
JDK-8230525 - Missing intrinsics for Integer and Long operations
Relates :  
JDK-8287855 - Problem in compress_expand_identity
Description
Make intrinsic the methods to compress and expand bits on x86
Comments
Changeset: f347ff99 Author: Jatin Bhateja <jbhateja@openjdk.org> Date: 2022-06-06 00:37:54 +0000 URL: https://git.openjdk.java.net/jdk/commit/f347ff9986afbc578aca8784be658d3629904786
06-06-2022
No other failures in tier1-4 testing.
04-06-2022
In tier1 new test failed on Windows AMD CPU (no AVX): [ RUN ] opto.compress_expand_bits_vm s\\open\\test\\hotspot\\gtest\\opto\\test_compress_expand_bits.cpp(34): error: Expected equality of these values: CompressBitsNode::compress_bits(-2147483648L, -65535L, 64) Which is: 65536 562949953355776L Which is: 562949953355776 [ FAILED ] opto.compress_expand_bits_vm (0 ms)
04-06-2022
A pull request was submitted for review. URL: https://git.openjdk.java.net/jdk/pull/8498 Date: 2022-05-02 08:19:53 +0000
02-05-2022