[roll] Roll fuchsia [build][x86][gcc] add a few feature bits to bring it up to parity with clang

With the recent -march=x86-64-v2 change for clang, the gcc build got
left behind slightly. Move a now redundant switch (-mcx16) under gcc and
add the few features that the kernel might use (-mpopcnt, -msahf) to
gcc.

Confirmed that gcc builds compile and run, and the popcnt instruction is
used.

This CL isn't really long for the world, since it appears that upcoming
gcc 11 will have a matching x86-64-v2 march, but the work and testing is
already done so may as well put this in anyway.

Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/518745
Original-Revision: d4cad99e2269f35af150a8a2ea3283e6c2fb6f90
GitOrigin-RevId: 2259bd76a421f109d6f87ff416673b252ec7db01
Change-Id: I8addca744f619795f3bdd3ae74b3e15e28bd6831
1 file changed
tree: e04c054da2340d6dac30f63df52e88b0acf4c7e6
  1. garnet/
  2. infra/
  3. peridot/
  4. third_party/
  5. topaz/
  6. zircon/
  7. firmware
  8. flower
  9. jiri.lock
  10. minimal
  11. prebuilts
  12. README.md
  13. stem
  14. test_durations
README.md

Integration

This repository contains Fuchsia's Global Integration manifest files.

Making changes

All changes should be made to the internal version of this repository. Our infrastructure automatically updates this version when the internal one changes.

Currently all changes must be made by a Google employee. Non-Google employees wishing to make a change can ask for assistance via the IRC channel #fuchsia on Freenode.

Obtaining the source

First install Jiri.

Next run:

$ jiri init
$ jiri import minimal https://fuchsia.googlesource.com/integration
$ jiri update

Third party

Third party projects should have their own subdirectory in ./third_party.