llvm dev - May 2013 - [LLVMdev] Link between MachineInstr and MachineOperand

In the representation of the code after instruction selection (but 
before register allocation), in a MachineBasicBlock:
How/where is the result of a machine instruction linked to one of the 
machine operands of a subsequent machine instruction?
Asked differently: How/where are the links of the DAG implemented 
(specially between MachineInstr and MachineOperand)?

Frank

The missing information was that machine instructions employ a def/use 
semantic for their operands. The 'links' between input and output of 
instructions are the virtual registers, first 'defined' (as output) and 
in a subsequent consumer instruction 'used' (as input).

Frank


On 29/05/13 09:58, Frank Winter wrote:
> In the representation of the code after instruction selection (but 
> before register allocation), in a MachineBasicBlock:
> How/where is the result of a machine instruction linked to one of the 
> machine operands of a subsequent machine instruction?
> Asked differently: How/where are the links of the DAG implemented 
> (specially between MachineInstr and MachineOperand)?
>
> Frank
>