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From: Andrew Macleod <amacleod@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org Subject: [gcc r13-2795] Convert CFN_BUILT_IN_CLRSB to range-ops. Date: Thu, 22 Sep 2022 18:49:58 +0000 (GMT) [thread overview] Message-ID: <20220922184958.6AC863857C71@sourceware.org> (raw) https://gcc.gnu.org/g:f7e62b09300b6935bceaffb4c42f6edab80f52dc commit r13-2795-gf7e62b09300b6935bceaffb4c42f6edab80f52dc Author: Andrew MacLeod <amacleod@redhat.com> Date: Tue Sep 20 18:21:04 2022 -0400 Convert CFN_BUILT_IN_CLRSB to range-ops. * gimple-range-fold.cc (range_of_builtin_int_call): Remove case for CFN_BUILT_IN_CLRSB. * gimple-range-op.cc (class cfn_clrsb): New. (gimple_range_op_handler::maybe_builtin_call): Set arguments. Diff: --- gcc/gimple-range-fold.cc | 7 ------- gcc/gimple-range-op.cc | 23 +++++++++++++++++++++++ 2 files changed, 23 insertions(+), 7 deletions(-) diff --git a/gcc/gimple-range-fold.cc b/gcc/gimple-range-fold.cc index 96a138a7a02..1d7d1da7bbe 100644 --- a/gcc/gimple-range-fold.cc +++ b/gcc/gimple-range-fold.cc @@ -916,8 +916,6 @@ fold_using_range::range_of_builtin_int_call (irange &r, gcall *call, return false; tree type = gimple_range_type (call); - tree arg; - int prec; scalar_int_mode mode; switch (func) @@ -926,11 +924,6 @@ fold_using_range::range_of_builtin_int_call (irange &r, gcall *call, r.set (build_zero_cst (type), build_one_cst (type)); return true; - CASE_CFN_CLRSB: - arg = gimple_call_arg (call, 0); - prec = TYPE_PRECISION (TREE_TYPE (arg)); - r.set (build_int_cst (type, 0), build_int_cst (type, prec - 1)); - return true; case CFN_UBSAN_CHECK_ADD: range_of_builtin_ubsan_call (r, call, PLUS_EXPR, src); return true; diff --git a/gcc/gimple-range-op.cc b/gcc/gimple-range-op.cc index 801c2bb235e..bee225431e8 100644 --- a/gcc/gimple-range-op.cc +++ b/gcc/gimple-range-op.cc @@ -559,6 +559,23 @@ cfn_ctz::fold_range (irange &r, tree type, const irange &lh, return true; } + +// Implement range operator for CFN_BUILT_IN_ +class cfn_clrsb : public range_operator +{ +public: + using range_operator::fold_range; + virtual bool fold_range (irange &r, tree type, const irange &lh, + const irange &, relation_kind) const + { + if (lh.undefined_p ()) + return false; + int prec = TYPE_PRECISION (lh.type ()); + r.set (build_int_cst (type, 0), build_int_cst (type, prec - 1)); + return true; + } +} op_cfn_clrsb; + // Set up a gimple_range_op_handler for any built in function which can be // supported via range-ops. @@ -632,6 +649,12 @@ gimple_range_op_handler::maybe_builtin_call () m_int = &op_cfn_ctz; break; + CASE_CFN_CLRSB: + m_op1 = gimple_call_arg (call, 0); + m_valid = true; + m_int = &op_cfn_clrsb; + break; + default: break; }
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