NEW 238009
[RISC-V] Support the bitmanip extensions 
https://bugs.webkit.org/show_bug.cgi?id=238009
Summary [RISC-V] Support the bitmanip extensions
Zan Dobersek
Reported 2022-03-17 01:23:48 PDT
The bitmanip extensions (Zba, Zbb, Zbc, Zbs) have been ratified some months ago, and would be very useful in how we generate instructions for certain operations. These would have to be detected at runtime. Once indicated as supported, we could generate much simpler instructions instead of the current overly-verbose implementations.
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Add attachment proposed patch, testcase, etc.
Zan Dobersek
Comment 1 2022-03-17 01:37:08 PDT
Bitmanip (Zba, Zbb, Zbc, Zbs) spec: https://github.com/riscv/riscv-bitmanip/releases/download/1.0.0/bitmanip-1.0.0-38-g865e7a7.pdf
Radar WebKit Bug Importer
Comment 2 2022-03-24 01:24:15 PDT
<rdar://problem/90753636>
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