Re: [9fans] Alef PPC code generation problem

[Lucio De Re <lucio@proxima.alt.za>]

On Tue, Apr 02, 2002 at 01:11:20PM +0100, forsyth@vitanuova.com wrote:
>
> i'm confused.  in the example you sent,
> 	t = 13*i;
> neither qal nor qc generates a type upgrade for constant 13;
> it generates an integer multiplication of 13 and i (as shifts and adds, but that's almost
> beside the point), and then converts the result, which is correct.
>
For the record, what caused part of my confusion is that I "fixed" the
problem I encountered compiling /sys/src/alef/lib/port/sin.l:37 by
changing 4*f to 4.0*f.  I thought the constant was at fault.  It is
odd, though:

	quad = e - 4*f;

is the original statement.  Hm.  "quad" and "4" are the only integer
values.  I wonder at which stage of code generation the faulty
conversion code is applied?  It isn't to

	quad = e - 4.0 * f;

(seemingly).

++L