[Issue 12137] [REG DMD2.065-b3] Huge decline in performance

[d-bugmail at puremagic.com]

https://d.puremagic.com/issues/show_bug.cgi?id=12137



--- Comment #1 from Kenji Hara <k.hara.pg at gmail.com> 2014-02-12 07:39:04 PST ---
(In reply to comment #0)
> When compiling vibe.d, the performance and memory requirements of DMD got
> significantly worse (about 7x slower and up to 1.5x more memory requirement).
> Some measurements in Windows/32:
> 
> DMD 2.064:    5.5 s with about 780 MiB memory used
> DMD 2.065-b1: 36 s with about 880 MiB memory used
> DMD 2.065-b3: 40 s with about 880 MiB memory used

I'm really not sure what is the problem.

In my windows PC, checkout v2.064 tag on dmd/druntime/phobos repositories, then
the built environment will cause same issue.

But the released 2.064 environment (extracted from zip file) does not cause the
issue...

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