[Issue 10676] New: excessive compilation times with optimized PIC build

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=10676

           Summary: excessive compilation times with optimized PIC build
           Product: D
           Version: D2
          Platform: x86
        OS/Version: Linux
            Status: NEW
          Severity: blocker
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: code at dawg.eu


--- Comment #0 from Martin Nowak <code at dawg.eu> 2013-07-19 18:58:39 PDT ---
../dmd/src/dmd -I../druntime/import -c -unittest -m32 std/algorithm.d
3.9s
../dmd/src/dmd -I../druntime/import -c -unittest -m32 -O std/algorithm.d
5.8s
../dmd/src/dmd -I../druntime/import -c -unittest -m32 -fPIC std/algorithm.d
4.0s
../dmd/src/dmd -I../druntime/import -c -unittest -m32 -O -fPIC std/algorithm.d
1.5min

Profiling showed that over 90% of the time is spent in list_append (called by
listrds) during constant propagation.

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