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* [Bug rtl-optimization/106160] New: invariant motion DF RD problem invokes quadratic behavior
@ 2022-07-01 11:05 rguenth at gcc dot gnu.org
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From: rguenth at gcc dot gnu.org @ 2022-07-01 11:05 UTC (permalink / raw)
To: gcc-bugs
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=106160
Bug ID: 106160
Summary: invariant motion DF RD problem invokes quadratic
behavior
Product: gcc
Version: 13.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: rtl-optimization
Assignee: unassigned at gcc dot gnu.org
Reporter: rguenth at gcc dot gnu.org
Target Milestone: ---
RTL invariant motion uses local DF analysis and a RD problem which in turn
calls
df_maybe_reorganize_def_refs which does work for all pseudos in a function.
It doesn't work to conditionalize this on !df->analyze_subset since appearantly
RD relies on this ordering somewhere.
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2022-07-01 11:05 [Bug rtl-optimization/106160] New: invariant motion DF RD problem invokes quadratic behavior rguenth at gcc dot gnu.org
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