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target/i386: implement SHA instructions

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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>
This commit is contained in:
Paolo Bonzini 2023-10-10 10:31:17 +02:00
parent 45b5933f7a
commit e582b629f0
6 changed files with 209 additions and 1 deletions
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14
target/i386/tcg/ops_sse_header.h.inc
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@ -399,6 +399,20 @@ DEF_HELPER_3(vpermq_ymm, void, Reg, Reg, i32)
#endif
#endif
/* SHA helpers */
#if SHIFT == 1
DEF_HELPER_3(sha1rnds4_f0, void, Reg, Reg, Reg)
DEF_HELPER_3(sha1rnds4_f1, void, Reg, Reg, Reg)
DEF_HELPER_3(sha1rnds4_f2, void, Reg, Reg, Reg)
DEF_HELPER_3(sha1rnds4_f3, void, Reg, Reg, Reg)
DEF_HELPER_3(sha1nexte, void, Reg, Reg, Reg)
DEF_HELPER_3(sha1msg1, void, Reg, Reg, Reg)
DEF_HELPER_3(sha1msg2, void, Reg, Reg, Reg)
DEF_HELPER_5(sha256rnds2, void, Reg, Reg, Reg, i32, i32)
DEF_HELPER_3(sha256msg1, void, Reg, Reg, Reg)
DEF_HELPER_3(sha256msg2, void, Reg, Reg, Reg)
#endif
#undef SHIFT
#undef Reg
#undef SUFFIX