| commit | 23ed9d3852bbc738bebeaa0fe4a0782f91d7873c | [log] [tgz] |
|---|---|---|
| author | David Benjamin <davidben@google.com> | Thu Jun 08 16:00:32 2023 -0400 |
| committer | Boringssl LUCI CQ <boringssl-scoped@luci-project-accounts.iam.gserviceaccount.com> | Thu Jun 08 21:58:02 2023 +0000 |
| tree | fbc790441cbb2a515d3ec65747bc7eba4b4d6376 | |
| parent | 761c3ed03c80e1dd8806bc114c26226fa5aeec62 [diff] |
Add target attributes to curve25519_64_adx.h
__builtin_ia32_addcarryx_u64 is, strictly speaking, an ADX intrinsic.
GCC and newer Clang seem to actually implement it without ADX, but
Clang 7 and older will actually try to generate ADX code with it. But
since the caller is not marked target("adx"), this fails to build.
Manually add ADX and BMI2 target attributes to all these functions. The
compiler should be free to use those instructions as these functions all
call into an ADX+BMI2 assembly function anyway. (Though it doesn't do
much with this.)
Note we cannot just annotate fiat_addcarryx_u64. Clang and GCC won't
inline across incompatible targets, so if we tag fiat_addcarryx_u64, we
need to tag the callers up the chain until we're willing to stop
inlining.
Change-Id: I855bb88fea666d92997984836e664292d90df5be
Reviewed-on: https://boringssl-review.googlesource.com/c/boringssl/+/60612
Reviewed-by: Adam Langley <agl@google.com>
Commit-Queue: Adam Langley <agl@google.com>
Auto-Submit: David Benjamin <davidben@google.com>
BoringSSL is a fork of OpenSSL that is designed to meet Google's needs.
Although BoringSSL is an open source project, it is not intended for general use, as OpenSSL is. We don't recommend that third parties depend upon it. Doing so is likely to be frustrating because there are no guarantees of API or ABI stability.
Programs ship their own copies of BoringSSL when they use it and we update everything as needed when deciding to make API changes. This allows us to mostly avoid compromises in the name of compatibility. It works for us, but it may not work for you.
BoringSSL arose because Google used OpenSSL for many years in various ways and, over time, built up a large number of patches that were maintained while tracking upstream OpenSSL. As Google's product portfolio became more complex, more copies of OpenSSL sprung up and the effort involved in maintaining all these patches in multiple places was growing steadily.
Currently BoringSSL is the SSL library in Chrome/Chromium, Android (but it's not part of the NDK) and a number of other apps/programs.
Project links:
There are other files in this directory which might be helpful: