On Wednesday, 23 April 2014 at 19:54:29 UTC, Nordlöw wrote:
tl;dr: allocation is a critical speed issue with dmd. Using
the bump-pointer method is very fast, and it matters.
What about packing DMD structure members such as integers and
enums more efficiently?
We could start with making enums __attribute__((packed)). Is
there any free static/dynamic tool to check for unexercized
bits?
How does Clang do to save so much space compared to GCC? Do
they pack gentlier or use deallocation?
A much higher-hanging fruit is to switch from using pointers to
32-bit handles on 64-bit CPUs to reference tokens,
sub-expressions etc. But I guess that is a big undertaking
getting type-safe and may give performance hits.
Maybe we should investigate where the memory is going first
before planning our attack :-)
