Hi everyone, I developed an aid to help me debug the peephole optimizer a while ago, and I would like to present it as a possible permanent fixture to the compiler if it is built with a particular define (DEBUG_ASMOUTPUT) - what it does... during each pass of the peephole optimizer under i386 or x86_64 (the only platforms that currently have implementations - other platforms won't do anything), the assembly of the current block is dumped to the console in a colour-coded fashion for ease of identification.
It's not something you would normally build the compiler with, since the console dump significantly increases the compilation time of a project, but if you have the compiler open in a debugger, say, it allows you to see what the peephole optimizer is working on if you put a breakpoint at the beginning of the loop, say. That way, you can see how the peephole optimiser has modified the code and thus more easily identify bugs when refactoring routines or adding new features. I myself have been using it to help with debugging my optimizer overhaul project. Details can be found here: https://bugs.freepascal.org/view.php?id=34642 Gareth aka. Kit
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