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From: "vries at gcc dot gnu.org" <sourceware-bugzilla@sourceware.org>
To: dwz@sourceware.org
Subject: [Bug default/25132] New: Calculate die_ref_hash lazily
Date: Tue, 01 Jan 2019 00:00:00 -0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D25132

            Bug ID: 25132
           Summary: Calculate die_ref_hash lazily
           Product: dwz
           Version: unspecified
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: default
          Assignee: nobody at sourceware dot org
          Reporter: vries at gcc dot gnu.org
                CC: dwz at sourceware dot org
  Target Milestone: ---

Idea for optimization.

We compare dies for equality if the die_ref_hash matches.

However, it may not be necessary to calculate the die_ref_hash for all dies.
If the die_hash for two dies doesn't match, we don't need to calculate the
die_ref_hash for those.

This won't work when f.i. collapsing dies, since we need to keep the dies
around.

--=20
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