asn1ct_imm: Add the {set,{var,Src},{var,Dst}} instruction

The {assign,Dst,Src} instruction is difficult to cope with when
doing advanced optimizations, since its source argument is a string
which may contain any expression.

Instead of changing how {assign,_,_} works, we will introduce new
instructions that can be used instead of {assign,_}, and remove
{assign,_,_} in a later commit when it is no longer used.

The first new instruction we will introduce is:

   {set,{var,Src},{var,Dst}}

It is useful for common sub-expression elemination among other things.
For the moment, we will only allow a variable as a source argument,
but we could extend it in the future to allow constants as well.

0 files changed, 0 insertions, 0 deletions