[PATCH (2/7)] Widening multiplies by more than one mode

[Andrew Stubbs]

On 12/07/11 12:04, Richard Guenther wrote:
> I wonder if we want to restrict the WIDEN_* operations to operate
> on types that have matching type/mode precision(**).

I've now modified the patch to allow bitfields, or other case where the 
precision is smaller than the mode-size. I've also addressed the 
formatting issues you pointed out (and in fact reorganised the code 
slightly to make the rest of the series a bit cleaner).

As in the previous version of this patch, it's necessary to convert the 
input values to the proper mode for the machine instruction, so the 
basic tools for supporting the bitfields were already there - I just had 
to tweak the conditionals to take bitfields into account.

The only this I haven't done is modified tree.def. Looking at it though, 
I don't thing any needs changing? The code is still valid, and the 
comments are correct (in fact, they may have been wrong before).

Is this version OK?

Andrew
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