On 12/21/2009 02:21 PM, Laurent Desnogues wrote:
As far as I know these CPU's don't need the full movcond but only the variant with vtrue.
I know that. And I looked into TCG very closely to figure out how to implement just that. Except then I have to modify TCG to special-case movcond to know that DEST is both input and output. This is *much* more work than simply having the back-end use a matching constraint on VFALSE.
Even if movcond was quick to generate host code, for instance for ARM, you'd have to explicitly detect conditional moves
One of us is confused. Why would I have to explicitly detect conditional moves?
r~
