From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: by sourceware.org (Postfix, from userid 2136) id 4DAD73881D27; Mon, 1 May 2023 06:34:29 +0000 (GMT) DKIM-Filter: OpenDKIM Filter v2.11.0 sourceware.org 4DAD73881D27 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gcc.gnu.org; s=default; t=1682922869; bh=CsBzoWd2GslmpoZZe415uIiuWuUE7FoPnGacN92RphQ=; h=From:To:Subject:Date:From; b=hvl88fwZ20agE08tYSfTBOwKN9SKcxZ62I3norwceZODt5OTEXiFbzFo/YpyP8vl3 +tih/G1+lOh5NFqAAORQQuHn3OTLSAAs8zC6iaBRwKIyIrSJo63FtfIAYGyy5PZZCc An2tSr7zm/0nettOeIgTPMInGFV0Ze0OLFx9R1Q4= MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset="utf-8" From: Aldy Hernandez To: gcc-cvs@gcc.gnu.org Subject: [gcc r14-378] Cleanup irange::set. X-Act-Checkin: gcc X-Git-Author: Aldy Hernandez X-Git-Refname: refs/heads/master X-Git-Oldrev: c92b8be9b52b7e0de5ad67bc268dad1498181908 X-Git-Newrev: 178abecaa9ca96acee6e155261d4dc50dd98fab4 Message-Id: <20230501063429.4DAD73881D27@sourceware.org> Date: Mon, 1 May 2023 06:34:29 +0000 (GMT) List-Id: https://gcc.gnu.org/g:178abecaa9ca96acee6e155261d4dc50dd98fab4 commit r14-378-g178abecaa9ca96acee6e155261d4dc50dd98fab4 Author: Aldy Hernandez Date: Thu Mar 2 23:37:20 2023 +0100 Cleanup irange::set. Now that anti-ranges are no more and iranges contain wide_ints instead of trees, various cleanups are possible. This is one of a handful of patches improving the performance of irange::set() which is not on a hot path, but quite sensitive because it is so pervasive. gcc/ChangeLog: * gimple-range-op.cc (cfn_ffs::fold_range): Use the correct precision. * gimple-ssa-warn-alloca.cc (alloca_call_type): Use <2> for invalid_range, as it is an inverse range. * tree-vrp.cc (find_case_label_range): Avoid trees. * value-range.cc (irange::irange_set): Delete. (irange::irange_set_1bit_anti_range): Delete. (irange::irange_set_anti_range): Delete. (irange::set): Cleanup. * value-range.h (class irange): Remove irange_set, irange_set_anti_range, irange_set_1bit_anti_range. (irange::set_undefined): Remove set to m_type. Diff: --- gcc/gimple-range-op.cc | 4 +- gcc/gimple-ssa-warn-alloca.cc | 2 +- gcc/tree-vrp.cc | 8 +- gcc/value-range.cc | 175 ++++++++++++------------------------------ gcc/value-range.h | 5 -- 5 files changed, 59 insertions(+), 135 deletions(-) diff --git a/gcc/gimple-range-op.cc b/gcc/gimple-range-op.cc index 3aef8357d8d..5d1f921ba40 100644 --- a/gcc/gimple-range-op.cc +++ b/gcc/gimple-range-op.cc @@ -654,7 +654,9 @@ public: range_cast (tmp, unsigned_type_for (tmp.type ())); wide_int max = tmp.upper_bound (); maxi = wi::floor_log2 (max) + 1; - r.set (type, wi::shwi (mini, prec), wi::shwi (maxi, prec)); + r.set (type, + wi::shwi (mini, TYPE_PRECISION (type)), + wi::shwi (maxi, TYPE_PRECISION (type))); return true; } } op_cfn_ffs; diff --git a/gcc/gimple-ssa-warn-alloca.cc b/gcc/gimple-ssa-warn-alloca.cc index c129aca16e2..2d8ab93a81d 100644 --- a/gcc/gimple-ssa-warn-alloca.cc +++ b/gcc/gimple-ssa-warn-alloca.cc @@ -222,7 +222,7 @@ alloca_call_type (gimple *stmt, bool is_vla) && !r.varying_p ()) { // The invalid bits are anything outside of [0, MAX_SIZE]. - int_range<1> invalid_range (size_type_node, + int_range<2> invalid_range (size_type_node, wi::shwi (0, TYPE_PRECISION (size_type_node)), wi::shwi (max_size, TYPE_PRECISION (size_type_node)), VR_ANTI_RANGE); diff --git a/gcc/tree-vrp.cc b/gcc/tree-vrp.cc index d28637b1918..0761b6896fe 100644 --- a/gcc/tree-vrp.cc +++ b/gcc/tree-vrp.cc @@ -827,6 +827,8 @@ find_case_label_range (gswitch *switch_stmt, const irange *range_of_op) size_t i, j; tree op = gimple_switch_index (switch_stmt); tree type = TREE_TYPE (op); + unsigned prec = TYPE_PRECISION (type); + signop sign = TYPE_SIGN (type); tree tmin = wide_int_to_tree (type, range_of_op->lower_bound ()); tree tmax = wide_int_to_tree (type, range_of_op->upper_bound ()); find_case_label_range (switch_stmt, tmin, tmax, &i, &j); @@ -837,9 +839,11 @@ find_case_label_range (gswitch *switch_stmt, const irange *range_of_op) tree label = gimple_switch_label (switch_stmt, i); tree case_high = CASE_HIGH (label) ? CASE_HIGH (label) : CASE_LOW (label); + wide_int wlow = wi::to_wide (CASE_LOW (label)); + wide_int whigh = wi::to_wide (case_high); int_range_max label_range (type, - wi::to_wide (CASE_LOW (label)), - wi::to_wide (case_high)); + wide_int::from (wlow, prec, sign), + wide_int::from (whigh, prec, sign)); if (!types_compatible_p (label_range.type (), range_of_op->type ())) range_cast (label_range, range_of_op->type ()); label_range.intersect (*range_of_op); diff --git a/gcc/value-range.cc b/gcc/value-range.cc index 2dc6b98bc63..655ffc2d6d4 100644 --- a/gcc/value-range.cc +++ b/gcc/value-range.cc @@ -961,98 +961,6 @@ get_legacy_range (const irange &r, tree &min, tree &max) return VR_RANGE; } -void -irange::irange_set (tree type, const wide_int &min, const wide_int &max) -{ - m_type = type; - m_base[0] = min; - m_base[1] = max; - m_num_ranges = 1; - m_kind = VR_RANGE; - m_nonzero_mask = wi::minus_one (TYPE_PRECISION (type)); - normalize_kind (); - - if (flag_checking) - verify_range (); -} - -void -irange::irange_set_1bit_anti_range (tree type, - const wide_int &min, const wide_int &max) -{ - unsigned prec = TYPE_PRECISION (type); - signop sign = TYPE_SIGN (type); - gcc_checking_assert (prec == 1); - - if (min == max) - { - wide_int tmp; - // Since these are 1-bit quantities, they can only be [MIN,MIN] - // or [MAX,MAX]. - if (min == wi::min_value (prec, sign)) - tmp = wi::max_value (prec, sign); - else - tmp = wi::min_value (prec, sign); - set (type, tmp, tmp); - } - else - { - // The only alternative is [MIN,MAX], which is the empty range. - gcc_checking_assert (min == wi::min_value (prec, sign)); - gcc_checking_assert (max == wi::max_value (prec, sign)); - set_undefined (); - } - if (flag_checking) - verify_range (); -} - -void -irange::irange_set_anti_range (tree type, - const wide_int &min, const wide_int &max) -{ - if (TYPE_PRECISION (type) == 1) - { - irange_set_1bit_anti_range (type, min, max); - return; - } - - // set an anti-range - signop sign = TYPE_SIGN (type); - int_range<2> type_range (type); - // Calculate INVERSE([I,J]) as [-MIN, I-1][J+1, +MAX]. - m_num_ranges = 0; - wi::overflow_type ovf; - - if (wi::ne_p (min, type_range.lower_bound ())) - { - wide_int lim1 = wi::sub (min, 1, sign, &ovf); - gcc_checking_assert (ovf != wi::OVF_OVERFLOW); - m_base[0] = type_range.lower_bound (0); - m_base[1] = lim1; - m_num_ranges = 1; - } - if (wi::ne_p (max, type_range.upper_bound ())) - { - if (m_max_ranges == 1 && m_num_ranges) - { - set_varying (type); - return; - } - wide_int lim2 = wi::add (max, 1, sign, &ovf); - gcc_checking_assert (ovf != wi::OVF_OVERFLOW); - m_base[m_num_ranges * 2] = lim2; - m_base[m_num_ranges * 2 + 1] = type_range.upper_bound (0); - ++m_num_ranges; - } - - m_kind = VR_RANGE; - m_nonzero_mask = wi::minus_one (TYPE_PRECISION (type)); - normalize_kind (); - - if (flag_checking) - verify_range (); -} - /* Set value range to the canonical form of {VRTYPE, MIN, MAX, EQUIV}. This means adjusting VRTYPE, MIN and MAX representing the case of a wrapping range with MAX < MIN covering [MIN, type_max] U [type_min, MAX] @@ -1063,48 +971,69 @@ irange::irange_set_anti_range (tree type, extract ranges from var + CST op limit. */ void -irange::set (tree type, const wide_int &rmin, const wide_int &rmax, +irange::set (tree type, const wide_int &min, const wide_int &max, value_range_kind kind) { - if (kind == VR_UNDEFINED) - { - irange::set_undefined (); - return; - } - - if (kind == VR_VARYING) - { - set_varying (type); - return; - } + unsigned prec = TYPE_PRECISION (type); + signop sign = TYPE_SIGN (type); + wide_int min_value = wi::min_value (prec, sign); + wide_int max_value = wi::max_value (prec, sign); m_type = type; - signop sign = TYPE_SIGN (type); - unsigned prec = TYPE_PRECISION (type); - wide_int min = wide_int::from (rmin, prec, sign); - wide_int max = wide_int::from (rmax, prec, sign); + m_nonzero_mask = wi::minus_one (prec); if (kind == VR_RANGE) - irange_set (type, min, max); + { + m_base[0] = min; + m_base[1] = max; + m_num_ranges = 1; + if (min == min_value && max == max_value) + m_kind = VR_VARYING; + else + m_kind = VR_RANGE; + } else { gcc_checking_assert (kind == VR_ANTI_RANGE); - irange_set_anti_range (type, min, max); + gcc_checking_assert (m_max_ranges > 1); + + m_kind = VR_UNDEFINED; + m_num_ranges = 0; + wi::overflow_type ovf; + wide_int lim; + if (sign == SIGNED) + lim = wi::add (min, -1, sign, &ovf); + else + lim = wi::sub (min, 1, sign, &ovf); + + if (!ovf) + { + m_kind = VR_RANGE; + m_base[0] = min_value; + m_base[1] = lim; + ++m_num_ranges; + } + if (sign == SIGNED) + lim = wi::sub (max, -1, sign, &ovf); + else + lim = wi::add (max, 1, sign, &ovf); + if (!ovf) + { + m_kind = VR_RANGE; + m_base[m_num_ranges * 2] = lim; + m_base[m_num_ranges * 2 + 1] = max_value; + ++m_num_ranges; + } } + + if (flag_checking) + verify_range (); } void irange::set (tree min, tree max, value_range_kind kind) { - if (kind == VR_UNDEFINED) - { - irange::set_undefined (); - return; - } - - if (kind == VR_VARYING - || POLY_INT_CST_P (min) - || POLY_INT_CST_P (max)) + if (POLY_INT_CST_P (min) || POLY_INT_CST_P (max)) { set_varying (TREE_TYPE (min)); return; @@ -1113,13 +1042,7 @@ irange::set (tree min, tree max, value_range_kind kind) gcc_checking_assert (TREE_CODE (min) == INTEGER_CST); gcc_checking_assert (TREE_CODE (max) == INTEGER_CST); - if (TREE_OVERFLOW_P (min)) - min = drop_tree_overflow (min); - if (TREE_OVERFLOW_P (max)) - max = drop_tree_overflow (max); - - return set (TREE_TYPE (min), - wi::to_wide (min), wi::to_wide (max), kind); + return set (TREE_TYPE (min), wi::to_wide (min), wi::to_wide (max), kind); } // Check the validity of the range. diff --git a/gcc/value-range.h b/gcc/value-range.h index 9f82b0011c7..9a834c91b17 100644 --- a/gcc/value-range.h +++ b/gcc/value-range.h @@ -172,8 +172,6 @@ protected: irange (wide_int *, unsigned); // In-place operators. - void irange_set (tree type, const wide_int &, const wide_int &); - void irange_set_anti_range (tree type, const wide_int &, const wide_int &); bool irange_contains_p (const irange &) const; bool irange_single_pair_union (const irange &r); @@ -186,8 +184,6 @@ private: friend void gt_pch_nx (irange *); friend void gt_pch_nx (irange *, gt_pointer_operator, void *); - void irange_set_1bit_anti_range (tree type, - const wide_int &, const wide_int &); bool varying_compatible_p () const; bool intersect_nonzero_bits (const irange &r); bool union_nonzero_bits (const irange &r); @@ -831,7 +827,6 @@ inline void irange::set_undefined () { m_kind = VR_UNDEFINED; - m_type = NULL; m_num_ranges = 0; }