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| author | Andrew MacLeod <amacleod@redhat.com> | 2022-04-25 09:56:35 -0400 |
|---|---|---|
| committer | Andrew MacLeod <amacleod@redhat.com> | 2022-04-25 09:58:53 -0400 |
| commit | 362e2a9c6297203bcf7f66bfb51dffb82b42d3b3 (patch) | |
| tree | 01abff06b790a4d219fa4951900128723aa45313 /gcc/gimple-range.cc | |
| parent | 46cd445fc0714cc6c834b680c3f59dbad0b94a3c (diff) | |
| download | gcc-362e2a9c6297203bcf7f66bfb51dffb82b42d3b3.zip gcc-362e2a9c6297203bcf7f66bfb51dffb82b42d3b3.tar.gz gcc-362e2a9c6297203bcf7f66bfb51dffb82b42d3b3.tar.bz2 | |
Retain existing range knowledge when prefilling statements.
When range_of_stmt was adjusted to avoid large recursion depth, we need to
intersect the calculated range whth the any known range to avoid losing
info. Range_of_stmt does this, but the new prefill code missed it.
PR tree-optimization/105276
gcc/
* gimple-range.cc (gimple_ranger::prefill_stmt_dependencies): Include
existing global range with calculated value.
gcc/testsuite/
* g++.dg/pr105276.C: New.
Diffstat (limited to 'gcc/gimple-range.cc')
| -rw-r--r-- | gcc/gimple-range.cc | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/gcc/gimple-range.cc b/gcc/gimple-range.cc index 04075a9..f0caefc 100644 --- a/gcc/gimple-range.cc +++ b/gcc/gimple-range.cc @@ -394,6 +394,10 @@ gimple_ranger::prefill_stmt_dependencies (tree ssa) // Fold and save the value for NAME. stmt = SSA_NAME_DEF_STMT (name); fold_range_internal (r, stmt, name); + // Make sure we don't lose any current global info. + int_range_max tmp; + m_cache.get_global_range (tmp, name); + r.intersect (tmp); m_cache.set_global_range (name, r); } continue; |