[Nouveau] [Bug 51862] New: Shader optimizer is extremely slow

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=51862

             Bug #: 51862
           Summary: Shader optimizer is extremely slow
    Classification: Unclassified
           Product: Mesa
           Version: git
          Platform: x86-64 (AMD64)
        OS/Version: Linux (All)
            Status: NEW
          Severity: critical
          Priority: medium
         Component: Drivers/DRI/nouveau
        AssignedTo: nouveau at lists.freedesktop.org
        ReportedBy: tiziano at tizbac.dyndns.org


Created attachment 63969
  --> https://bugs.freedesktop.org/attachment.cgi?id=63969
Comparison of shader compile times between mesa and nvidia driver

Shader optimizer is extremely slow and causes games like Crysis that loads
content while playing to go very slow or freeze temporarily

On nvidia proprietary driver sometimes compiling is even 200x faster

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