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Bug 15988 – [REG v2.070] Massive Compile Time Slowdown

Status: RESOLVED
Resolution: INVALID
Severity: regression
Priority: P1
Component: dmd
Product: D
Version: D2
Platform: All
OS: All
Creation time: 2016-05-03T03:46:00Z
Last change time: 2016-10-05T19:42:47Z
Keywords: performance
Assigned to: nobody
Creator: jack

Comments

Comment #0 by jack — 2016-05-03T03:46:27Z

According to http://forum.dlang.org/post/[email protected] and http://forum.dlang.org/post/[email protected] DMD suffered anywhere between a 47% to 360% increase in compile times. My largest project actually saw a decrease in compile times, so we have to solicit the community for examples.

Comment #1 by b2.temp — 2016-05-03T05:26:20Z

The OP hasn't well noted that's only the **debug** build which is affected.

Comment #2 by code — 2016-09-13T13:49:58Z

I think we fixed a major performance issue with https://github.com/dlang/dmd/pull/6024 but that problem never made it to any release.

Comment #3 by code — 2016-09-13T13:55:41Z

Any example project to reproduce the issue?

Comment #4 by jack — 2016-09-13T13:57:02Z

(In reply to Martin Nowak from comment #3) > Any example project to reproduce the issue? You can try to reach out to the people in the linked news group threads

Comment #5 by code — 2016-10-05T18:11:27Z

I heard back that the problem was no longer reproducible with their latest codebase and the latest dmd compiler, though it's a bit unclear what fixed it, but the old state can't be easily tested any longer.

Comment #6 by jack — 2016-10-05T19:42:47Z

I'll just close this then