sh-unknown-linux-gnu (Support of no fdiv for integer division)

[NIIBE Yutaka]

Alexandre Oliva wrote:
 > It is my understanding that this is exactly what -m4-nofpu means.

Weird.  IIRC, you said that it is for SH3 last year.

Anyway, I don't mind.  Let's look current implementation.

Current implementation defines __sh3__ for -m4-nofpu, and the binary
generated with -m4-nofpu is *not* compatible to the one of -m4,
because the arguments are placed differently (when structure is
passed).

The binary generated by -m4-nofpu is compatible with the one with -m3.

So, for me, -m4-nofpu is _not_:
	Generate code for SH4 without touching FPU,
	if we only do interger arithmetic.

This is the reason why we went to -mno-fdiv-divsi.
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