JDK-8235405 : C2: Merge AD instructions for different vector operations
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 14
  • Priority: P3
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2019-12-05
  • Updated: 2019-12-19
  • Resolved: 2019-12-12
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JDK 14 JDK 15
14 b27Fixed 15Fixed
Related Reports
Relates :  
JDK-8230015 - [instruction selector] generic vector operands support.
Description
Merge AD instructions for the following vector operations: 
  - LoadVector
  - StoreVector
  - RoundDoubleModeV
  - AndV
  - OrV
  - XorV
  - MulAddVS2VI
  - PopCountVI

The goal is to reduce the number of AD instructions needed to implement aforementioned operations on vectors.
Comments
URL: https://hg.openjdk.java.net/jdk/jdk/rev/8c16680c5b2e User: vlivanov Date: 2019-12-12 10:19:49 +0000
12-12-2019