Comments (1)
jmesyou
commented on June 7, 2024
The instruction for CLWB was implemented in eclipse/omr#7253. The intention was to lower calls to writeback0 to the CLWB instruction in the x86 backend but support for writeback0 is unnecessary because OpenJ9 has taken a different approach. A native implementation of writebackMemory, the only parent caller of writeback0, is provided for the runtime instead of writeback0. Therefore calls to writeback0 are never made and never need to be recognized nor replaced by the JIT compiler.
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