search for: mfacc

...lator register (acc) as an implicit operand. This is different from typical three or four operands mac instructions. As an illustration, the following instructions compute a + b x c + e x f + g *h. initacc a //initialize the accumulator register fmac b c fmac e f fmac g h mfacc i //move result from the accumulator register to register i A straightforward implementation is to find the patterns in selectionDAG and turn them into mac instructions chains like above. One chain of mac instructions (with initacc at the beginning and mfacc at the end)...