diff options
| author | isharipo <iskander.sharipov@intel.com> | 2017-10-03 18:43:33 +0300 |
|---|---|---|
| committer | Ilya Tocar <ilya.tocar@intel.com> | 2017-10-06 15:44:54 +0000 |
| commit | 41fa265db0548d25cb5eb84e80a537128a7172ac (patch) | |
| tree | deb33cf9444472eef5bef906a1ee52e81872dbb1 /src/math/bits | |
| parent | ca5127cbcdaf54beec8245d97d251988e634c7c0 (diff) | |
| download | go-41fa265db0548d25cb5eb84e80a537128a7172ac.tar.xz | |
obj/x86: make VEX-specified-register explicit
"VEX.vvvv" field (VSR, VEX-specified-register) made explicit
in Optab encoding.
vexNDS, vexNDD, vexDDS and vexNOVSR do nothing,
this change does not produce any noticeable effect.
Rationale behind this change:
- keep more information inside optab entries
- make encodings match SDM more closely
- one less special rule to keep in mind
Pvex optabs are updated based on the Intel SDM descriptions.
Unused VEX combinations are removed;
it is problematic to choose VSR combinations for them
without actual Optabs that use them.
The origin of this idea can be found in:
https://go-review.googlesource.com/#/c/arch/+/66972/
Change-Id: I54634a72b44d61f4b924a1e45f2240aab7384dc2
Reviewed-on: https://go-review.googlesource.com/67890
Run-TryBot: Iskander Sharipov <iskander.sharipov@intel.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Russ Cox <rsc@golang.org>
Diffstat (limited to 'src/math/bits')
0 files changed, 0 insertions, 0 deletions