On Fri, Sep 30, 2005 at 04:31:59PM -0700, Dale Johannesen wrote:
> No, there isn't, but it might be a smaller change to add a new
> constraint....
> having constraints tied to specific constants is pretty ugly, and so is
> having (if (constant value==0)) in a lot of patterns..,,
That's why you'd centralize this into a few functions. There
are several things that need changing:
* Match different forms of constant for C.
* Update vector_move_operand to use that same routine.
* A routine to determine which of several instructions
we want to emit. E.g. xorps instead of pxor for -Os.
It should return a ATTR_MODE result so that we can
call it from the mode attribute of various instructions.
* A routine that uses the previous to return a const char*
template to return from the insn output patterns.
For bonus points, handle MMX too.
r~
