> I thought that RTL represented something close to the target machine, > but not machine-dependent. I firstly thought that the output of the > middle-end was an RTL machine-independent representation, to which is > applied a few low-optimization machine-independent passes, and after > that is translated to a RTL machine-dependent to be applied other > optimization passes.
There are certain details that you will discover in the RTL that makes it highly machine-dependent. For example, the register number where functions place their values is defined by the ABI and implemented by the backend. RTL is by no means machine neutral. Cheers, Ben -- Ben Elliston <[EMAIL PROTECTED]> Australia Development Lab, IBM
