Am 20.03.2018 um 22:19 schrieb Maarten Brock:
> As for comparison of mcs51 code. I can tell that Keil did already a lot
> better than SDCC several years ago. Since then SDCC got worse and Keil
> stood still.
>
> Maarten
Today, I looked into the mcs51 --model-large --stack-auto Dhrystone code
size situation in the SDCC 3.6.0 - SDCC 3.7.0 timeframe. Code size data
for Dhrystone can be seen in the attached graph, the black arrows mark
the releases.
As can be seen, about 63% of the code size increase from 3.6.0 to 3.7.0
came from a single commit.
That commit enabled support for a standard-compliant bool for mcs51.
Previously, the mcs51 used __bit for bool (which meant that arrays of
bool were not supported, nor pointers to bool not bool in struct/union).
I hope we can partially undo that regression by optimizing the handling
of bool in the mcs51 backend a bit.
Philipp
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