JDK-8311691 : C2: Remove legacy code related to PostLoopMultiversioning
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 22
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2023-07-10
  • Updated: 2023-07-20
  • Resolved: 2023-07-13
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JDK 22
22 b07Fixed
Related Reports
Duplicate :  
JDK-8304774 - compiler/c2/irTests/TestVectorConditionalMove.java fails with -XX:+PostLoopMultiversioning
Duplicate :  
JDK-8301657 - Fix post loop vectorization with parallel loop iv
Duplicate :  
JDK-8308949 - C2 SuperWord: assert(vmask != nullptr) failed: vector mask should be generated
Duplicate :  
JDK-8301944 - assert(cmp == __null) failed: A cmp with 2 OpaqueZeroTripGuard inputs with -XX:+PostLoopMultiversioning
Duplicate :  
JDK-8301904 - Incorrect post loop vectorization when IV is converted to long
Relates :  
JDK-8308994 - C2: Re-implement experimental post loop vectorization
Description
As discussed in JDK-8308994, we are working on re-implementation of post loop vectorization and planning to refactor current SuperWord code. As nobody is using or maintaining the old implementation now, to make the refactoring work easier, we propose to remove the legacy code of the old implementation first.
Comments
Changeset: a38582e9 Author: Pengfei Li <pli@openjdk.org> Date: 2023-07-13 01:45:52 +0000 URL: https://git.openjdk.org/jdk/commit/a38582e941c0234e76d1dbea60c731c83d2c9977
13-07-2023
A pull request was submitted for review. URL: https://git.openjdk.org/jdk/pull/14824 Date: 2023-07-11 09:56:51 +0000
11-07-2023