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Rename class to gimple_outoging_edge and provide a non-class routine for
the outgoing edge of a gcond.
* gimple-range-edge.h (gimple_outgoing_range): Rename from
outgoing_range.
(gcond_edge_range): Export prototype.
* gimple-range-edge.cc (gcond_edge_range): New.
(gimple_outgoing_range::edge_range_p): Use gcond_edge_range.
* gimple-range-gori.h (gori_compute): Use gimple_outgoing_range.
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We were always allocating the 255 max ranges for the default condition.
Instead, use int_range_max to build the default range, then allocate and
store only what is needed.
* gimple-range-edge.cc (outgoing_range::calc_switch_ranges): Compute
default range into a temp and allocate only what is needed.
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There's a read of a freed block while accessing the default_slot in
calc_switch_ranges.
default_slot->intersect (def_range);
It seems the default_slot got swiped from under us, and the valgrind
dump indicates the free came from the get_or_insert in the same
function:
irange *&slot = m_edge_table->get_or_insert (e, &existed);
So it looks like the get_or_insert is actually freeing the value of
the previously allocated default_slot. Looking down the chain
from get_or_insert, we see it calls hash_table<>::expand, which
actually does a free while doing a resize of sorts:
if (!m_ggc)
Allocator <value_type> ::data_free (oentries);
else
ggc_free (oentries);
This patch avoids keeping a pointer to the default_slot across multiple
calls to get_or_insert in the loop.
gcc/ChangeLog:
PR tree-optimization/97379
* gimple-range-edge.cc (outgoing_range::calc_switch_ranges): Do
not save hash slot across calls to hash_table<>::get_or_insert.
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Add the 8 ranger files and the Makefile changes to build it.
2020-10-06 Andrew MacLeod <amacleod@redhat.com>
* Makefile.in (OBJS): Add gimple-range*.o.
* gimple-range.h: New file.
* gimple-range.cc: New file.
* gimple-range-cache.h: New file.
* gimple-range-cache.cc: New file.
* gimple-range-edge.h: New file.
* gimple-range-edge.cc: New file.
* gimple-range-gori.h: New file.
* gimple-range-gori.cc: New file.
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