[Bug target/48941] [arm gcc] NEON: Stack pointer operations performed even tho stack is not accessed at all in function.

[rearnsha at gcc dot gnu.org]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48941

--- Comment #4 from Richard Earnshaw <rearnsha at gcc dot gnu.org> 2011-05-16 08:13:04 UTC ---
(In reply to comment #3)
> Created attachment 24234 [details]
> Proposed patch
> 
> The attached patch seems to fix the testcase and doesn't
> regress neon.exp.  I'll test it fully next week.
> We still generate more moves than necessary, but that's
> a separate problem.

I think we should try to preserve the existing internal API, so that if someone
manages to pick up an older version of arm_neon.h they won't get bizarre errors
out of the compiler.