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| author | Andrew MacLeod <amacleod@redhat.com> | 2022-07-08 13:30:49 -0400 |
|---|---|---|
| committer | Andrew MacLeod <amacleod@redhat.com> | 2022-07-11 14:41:15 -0400 |
| commit | 12a9b98ac574bc8092a75849b5c462135d35c31d (patch) | |
| tree | 6792f832b6de61c53b8e63b09ecf6cbe6abc596e /gcc/gimple-range-cache.cc | |
| parent | c3ed9e0d6e96d8697e4bab994f8acbc5506240ee (diff) | |
| download | gcc-12a9b98ac574bc8092a75849b5c462135d35c31d.zip gcc-12a9b98ac574bc8092a75849b5c462135d35c31d.tar.gz gcc-12a9b98ac574bc8092a75849b5c462135d35c31d.tar.bz2 | |
Avoid calling range_from_dom when dominator is already resolved.
range_from_dom makes a recursive call to resolve the immediate dominator
when there are multiple incoming edges to a block. This is not necessary
when the dominator already has an on-entry cache value.
PR tree-optimization/106234
* gimple-range-cache.cc (ranger_cache::range_from_dom): Check dominator
cache value before recursively resolving it.
Diffstat (limited to 'gcc/gimple-range-cache.cc')
| -rw-r--r-- | gcc/gimple-range-cache.cc | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/gcc/gimple-range-cache.cc b/gcc/gimple-range-cache.cc index 9be8bc6..da7b805 100644 --- a/gcc/gimple-range-cache.cc +++ b/gcc/gimple-range-cache.cc @@ -1359,10 +1359,11 @@ ranger_cache::range_from_dom (vrange &r, tree name, basic_block start_bb, m_workback.quick_push (prev_bb); else if (mode == RFD_FILL) { - // Multiple incoming edges, so recursively satisfy this block, - // store the range, then calculate the incoming range for PREV_BB. - if (def_bb != bb) + // Multiple incoming edges, so recursively satisfy this block + // if it doesn't already have a value, and store the range. + if (!m_on_entry.bb_range_p (name, bb) && def_bb != bb) { + // If the dominator has not been set, look it up. range_from_dom (r, name, bb, RFD_FILL); // If the range can't be store, don't try to accumulate // the range in PREV_BB due to excessive recalculations. |