* [Bug default/25142] New: Add optimization levels
@ 2019-01-01 0:00 vries at gcc dot gnu.org
0 siblings, 0 replies; only message in thread
From: vries at gcc dot gnu.org @ 2019-01-01 0:00 UTC (permalink / raw)
To: dwz
https://sourceware.org/bugzilla/show_bug.cgi?id=25142
Bug ID: 25142
Summary: Add optimization levels
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: ---
Both for the purposes of:
- bug analysis (for the dwz developer)
- bug workaround (for the dwz user)
it would be good to be able to somehow control the optimization level.
So, it would be possible to work around bugs in -O<n> by using -O<n-1>.
A possible optimization level distribution could be:
- O1: read in and write out, no duplicate DIE elimination:
- rewrite .debug_abbrev sections (merging abbreviation tables for different
CUs to eliminate duplicate table entries),
- use minimal reference encoding (f.i., rewrite DW_FORM_ref8 into
DW_FORM_ref4)
- O2: eliminate duplicate DIEs intra-CU
- O3: eliminate duplicate DIEs inter-CU
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2019-01-01 0:00 [Bug default/25142] New: Add optimization levels vries at gcc dot gnu.org
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