[arm64] Negative immediates and lack of default Neon support

[Marc Glisse]

On Wed, 24 Sep 2014, Torbjörn Granlund wrote:

> Does -mfpu=neon work with the newer clangs?

I get:
clang: warning: argument unused during compilation: '-mfpu=neon'

for every call to clang, but it works.

By the way, for inline asm, the 'w' modifier you showed me is the official 
way and gcc is going to document that:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=63359

-- 
Marc Glisse