About the housekeeping overhead in PowerPC machine code generated by the C compiler: > This, combined with the (correct) practice of modularizing everything i

About the housekeeping overhead in PowerPC machine code generated by the C compiler: > This, combined with the (correct) practice of modularizing everything into small subroutines that don't individually do much, produces very long programs dominated by instructions that don't do anything we care about. I wonder how much of this was due to the RISC nature of the PowerPC instruction set and how much was the relative inefficiency of compiler code generation. For a fairly recent ISA like RISC-V or ARM64, with a modern compiler like clang, are things now better or worse? I imagine link-time optimization helps some.