Displaying 1 result from an estimated 1 matches for "aluout".
2015 Nov 12
2
Help making 'narrow instruct microcode' Backend
...also developing the target
architecture (maybe to go in an fpga eventually) and I'm intentionally
making it extremely simple. I think of it as a narrow microcode, because
(for example) performing an add requires a sequence of instructions like:
set aluin1 = r1
set aluin2 = r2
aluop add
set r3 = aluout
I've started implementing the backend in clang, and I got this basic
example working by modifying my backend's implementation of
SelectionDAGISel::Select to handle ISD::ADD and transform it into the
above 4-instruction sequence. However, I'd like to expand the architecture
to have more...