[Issue 18362] New: Build dmd with LTO and PGO

[d-bugmail at puremagic.com]

https://issues.dlang.org/show_bug.cgi?id=18362

          Issue ID: 18362
           Summary: Build dmd with LTO and PGO
           Product: D
           Version: D2
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P1
         Component: installer
          Assignee: nobody at puremagic.com
          Reporter: greensunny12 at gmail.com

>From the ebay's TSV tools:

> Combined, LTO and PGO resulted in performance improvements greater than 25% on three of my standard six benchmarks, and five of the six improved at least 8%.

https://forum.dlang.org/post/qaornkbwmgigdnuxzhzq@forum.dlang.org

Even just 5% (or 2%) for free, would be worth exploring.

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