tree 0493ead1dcd8b995d31b488558ded08b22823be5
parent 45b5933f7afb055080e915c83663f3a4709a02db
author Paolo Bonzini <pbonzini@redhat.com> 1696926677 +0200
committer Paolo Bonzini <pbonzini@redhat.com> 1698248107 +0200

target/i386: implement SHA instructions

The implementation was validated with OpenSSL and with the test vectors in
https://github.com/rust-lang/stdarch/blob/master/crates/core_arch/src/x86/sha.rs.

The instructions provide a ~25% improvement on hashing a 64 MiB file:
runtime goes down from 1.8 seconds to 1.4 seconds; instruction count on
the host goes down from 5.8 billion to 4.8 billion with slightly better
IPC too.  Good job Intel. ;)

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>