JDK-8288022 : c2: Transform (CastLL (AddL into (AddL (CastLL when possible
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 20
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2022-06-08
  • Updated: 2024-08-20
  • Resolved: 2022-07-06
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JDK 20
20 b06Fixed
Related Reports
Relates :  
JDK-8330819 - C2 SuperWord: bad dominance after pre-loop limit adjustment with base that has CastLL after pre-loop
Relates :  
JDK-8338485 - C2: assert(bt == T_INT && _base == Int) failed: Not an Int
Description
Similar to transformations of (CastII (AddI or (ConvI2L (AddI with the same motivation. It was observed to help panama performance.
Comments
Changeset: cbaf6e80 Author: Roland Westrelin <roland@openjdk.org> Date: 2022-07-06 11:36:12 +0000 URL: https://git.openjdk.org/jdk/commit/cbaf6e807e2b959a0264c87035916850798a2dc6
06-07-2022
A pull request was submitted for review. URL: https://git.openjdk.org/jdk/pull/9139 Date: 2022-06-13 08:26:47 +0000
13-06-2022