238009 2022-03-17 01:23:48 -0700 [RISC-V] Support the bitmanip extensions 2022-03-24 01:24:15 -0700 1 1 1 Unclassified WebKit New Bugs WebKit Nightly Build Unspecified Unspecified NEW InRadar P2 Normal --- 237775 1 zan webkit-unassigned webkit-bug-importer oldest_to_newest 1852174 0 zan 2022-03-17 01:23:48 -0700 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. 1852183 1 zan 2022-03-17 01:37:08 -0700 Bitmanip (Zba, Zbb, Zbc, Zbs) spec: https://github.com/riscv/riscv-bitmanip/releases/download/1.0.0/bitmanip-1.0.0-38-g865e7a7.pdf 1854618 2 webkit-bug-importer 2022-03-24 01:24:15 -0700 <rdar://problem/90753636>