The fix for PR middle-end/35800 was to find a "new" default label as one is
required by the casesi pattern, but value-range-propagation had determined that
a switch statement can't fall through or reach the default label, so "it was
NULL". The fix was to arbitrarily use the first label of the case-table. An
improvement would be to slice off the last element, shrinking the table and its
range.
This naturally only affects targets with casesi patterns.
--
Summary: default case label for casesi should be spliced off from
last element
Product: gcc
Version: 4.4.0
Status: UNCONFIRMED
Keywords: missed-optimization
Severity: enhancement
Priority: P3
Component: tree-optimization
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: hp at gcc dot gnu dot org
GCC target triplet: cris-*-*
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=35809
