On Thursday, 4 April 2019 at 10:31:43 UTC, Julian wrote:
On Thursday, 4 April 2019 at 09:57:26 UTC, rikki cattermole
wrote:
If you need performance use ldc not dmd (assumed).
LLVM has many factors better code optimizes than dmd does.
Thanks! I already had dmd installed from a brief look at D a
long
time ago, so I missed the details at
https://dlang.org/download.html
ldc2 -O3 does a lot better, but the result is still 30x slower
without PCRE.
Try:
ldc2 -O3 -release -flto=thin
-defaultlib=phobos2-ldc-lto,druntime-ldc-lto -enable-inlining
This will improve inlining and optimization across the runtime
library boundaries. This can help in certain types of code.
