[fpc-devel] Kit's ambitions!
florian at freepascal.org
Mon May 21 21:44:14 CEST 2018
Am 13.05.2018 um 21:02 schrieb Christo:
> On Sun, 2018-05-13 at 03:28 +0100, J. Gareth Moreton wrote:
>> Expand on Data Flow Analysis in the compiler.
>> What I personally call the "Deep Optimizer", I'm proposing an assembler-level optimisation
>> system (although it won't touch pure assembler routines) that rearranges commands and changes
>> registers in order to minimise pipeline stalls and to also collapse a "div" and "mod"
>> operation into a single instruction where possible.
> I would also like the data flow analyzer to look at inline assembler and emit hints and warnings
> if it picks up something incoherent.
We had already a data flow analyzer for assembler in 1.0.x and early 2.x times, however, it was
disabled after several years as it was too hard to make it work safely.
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