Alpha vs. new ABI

[Alexandre Petit-Bianco]

Jeff Sturm writes:

> Can we safely ignore these macros?  

The C++ compiler doesn't specifically use them. But they are used in
functions found in stor-layout.c, where I guess they are indirectly
used by various front-ends (through the middle end), when necessary.

> I'm wondering now about arrays of double on i386 without
> -malign-double (or is that the default now?).

We don't seem to build our world with -malign-double. I built the
runtime with -malign-double and the tests on double are still passing.

So I'll check yesterday's patch soon.

./A