JDK-8198574 : [Graal] add support for Intel bit manipulation instructions
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: compiler
  • Affected Version: 10,11
  • Priority: P4
  • Status: Resolved
  • Resolution: Fixed
  • Submitted: 2018-02-22
  • Updated: 2019-01-15
  • Resolved: 2018-10-03
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tbdFixed
Related Reports
Relates :  
JDK-8198251 - [Graal] compiler/intrinsics/bmi/verifycode tests fail with Graal on macos
Description
Graal should add support for the same instructions that JDK-8031321 did for C2. Graal already supports UseCountLeadingZerosInstruction and UseCountTrailingZerosInstruction but doesn't yet support the other BMI patterns.
Comments
Patch is fixed. Pattern matching works and expected instructions are generated. Testing makes ensure pattern matching and compares native calculation against the interpreter. Thanks a lot to Yudi for the review! :-)
03-10-2018
First pull request for andn support has been published here: https://github.com/oracle/graal/pull/666
10-09-2018