Hello:
This series was applied to bpf/bpf-next.git (master)
by Alexei Starovoitov <ast@xxxxxxxxxx>:
On Fri, 7 Oct 2022 13:23:46 -0700 you wrote:
> With baseline x64 instruction set, shift count can only be an immediate
> or in %cl. The implicit dependency on %cl makes it necessary to shuffle
> registers around and/or add push/pop operations.
>
> BMI2 provides shift instructions that can use any general register as
> the shift count, saving us instructions and a few bytes in most cases.
>
> [...]
Here is the summary with links:
- [bpf-next,v5,1/3] bpf,x64: avoid unnecessary instructions when shift dest is ecx
https://git.kernel.org/bpf/bpf-next/c/81b35e7cad79
- [bpf-next,v5,2/3] bpf,x64: use shrx/sarx/shlx when available
https://git.kernel.org/bpf/bpf-next/c/77d8f5d47bfb
- [bpf-next,v5,3/3] bpf: add selftests for lsh, rsh, arsh with reg operand
https://git.kernel.org/bpf/bpf-next/c/8662de232149
You are awesome, thank you!
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