From c838119946c9f75f1e42f4320275355822cc86fc Mon Sep 17 00:00:00 2001 From: Andrew MacLeod Date: Mon, 7 Nov 2022 15:07:35 -0500 Subject: Add transitive inferred range processing. Rewalk statements at the end of a block to see if any inferred ranges affect earlier calculations and register those as inferred ranges. gcc/ PR tree-optimization/104530 * gimple-range-cache.cc (ranger_cache::register_inferred_value): New. Split from: (ranger_cache::apply_inferred_ranges): Move setting cache to separate function. * gimple-range-cache.h (register_inferred_value): New prototype. * gimple-range-infer.cc (infer_range_manager::has_range_p): New. * gimple-range-infer.h (has_range_p): New prototype. * gimple-range.cc (register_transitive_inferred_ranges): New. * gimple-range.h (register_transitive_inferred_ranges): New proto. * tree-vrp.cc (rvrp_folder::fold_stmt): Check for transitive inferred ranges at the end of the block before folding final stmt. gcc/testsuite/ * gcc.dg/pr104530.c: New. --- gcc/gimple-range-infer.cc | 11 +++++++++++ 1 file changed, 11 insertions(+) (limited to 'gcc/gimple-range-infer.cc') diff --git a/gcc/gimple-range-infer.cc b/gcc/gimple-range-infer.cc index 010b34a6bde..8714ef2ed41 100644 --- a/gcc/gimple-range-infer.cc +++ b/gcc/gimple-range-infer.cc @@ -252,6 +252,17 @@ infer_range_manager::get_nonzero (tree name) return *(m_nonzero[v]); } +// Return TRUE if there are any range inferences in block BB. + +bool +infer_range_manager::has_range_p (basic_block bb) +{ + if (bb->index >= (int)m_on_exit.length ()) + return false; + bitmap b = m_on_exit[bb->index].m_names; + return b && !bitmap_empty_p (b); +} + // Return TRUE if NAME has a range inference in block BB. bool -- cgit v1.2.1