From ea6da7f50fe2adc3a09fc10a3f437902c40ebff9 Mon Sep 17 00:00:00 2001 From: Aldy Hernandez Date: Mon, 5 Oct 2020 17:36:13 +0200 Subject: [PATCH] Cleanup legacy_union and legacy intersect in value_range. These are cleanups so that multi-range union/intersect doesn't have to deal with legacy code. Instead, these should be done in legacy mode. gcc/ChangeLog: * value-range.cc (irange::legacy_intersect): Only handle legacy ranges. (irange::legacy_union): Same. (irange::union_): When unioning legacy with non-legacy, first convert to legacy and do everything in legacy mode. (irange::intersect): Same, but for intersect. * range-op.cc (range_tests): Adjust for above changes. --- gcc/range-op.cc | 21 +++++++++++++++ gcc/value-range.cc | 67 +++++++++++++++++++--------------------------- 2 files changed, 48 insertions(+), 40 deletions(-) diff --git a/gcc/range-op.cc b/gcc/range-op.cc index 11e847f02c1..87c6d82f2ac 100644 --- a/gcc/range-op.cc +++ b/gcc/range-op.cc @@ -3901,6 +3901,27 @@ range_tests () r0.invert (); ASSERT_TRUE (r0.nonzero_p ()); + // test legacy interaction + // r0 = ~[1,1] + r0 = int_range<1> (UINT (1), UINT (1), VR_ANTI_RANGE); + // r1 = ~[3,3] + r1 = int_range<1> (UINT (3), UINT (3), VR_ANTI_RANGE); + + // vv = [0,0][2,2][4, MAX] + int_range<3> vv = r0; + vv.intersect (r1); + + ASSERT_TRUE (vv.contains_p (UINT (2))); + ASSERT_TRUE (vv.num_pairs () == 3); + + // create r0 as legacy [1,1] + r0 = int_range<1> (UINT (1), UINT (1)); + // And union it with [0,0][2,2][4,MAX] multi range + r0.union_ (vv); + // The result should be [0,2][4,MAX], or ~[3,3] but it must contain 2 + ASSERT_TRUE (r0.contains_p (UINT (2))); + + multi_precision_range_tests (); int_range_max_tests (); operator_tests (); diff --git a/gcc/value-range.cc b/gcc/value-range.cc index ed2c322ded9..cdcc6c65594 100644 --- a/gcc/value-range.cc +++ b/gcc/value-range.cc @@ -1093,19 +1093,14 @@ intersect_ranges (enum value_range_kind *vr0type, void irange::legacy_intersect (irange *vr0, const irange *vr1) { + gcc_checking_assert (vr0->legacy_mode_p ()); + gcc_checking_assert (vr1->legacy_mode_p ()); /* If either range is VR_VARYING the other one wins. */ if (vr1->varying_p ()) return; if (vr0->varying_p ()) { - /* Avoid the full copy if we already know both sides are simple - and can be trivially copied. */ - if (vr1->legacy_mode_p ()) - { - vr0->set (vr1->min (), vr1->max (), vr1->kind ()); - return; - } - *vr0 = *vr1; + vr0->set (vr1->min (), vr1->max (), vr1->kind ()); return; } @@ -1122,17 +1117,9 @@ irange::legacy_intersect (irange *vr0, const irange *vr1) value_range_kind vr0kind = vr0->kind (); tree vr0min = vr0->min (); tree vr0max = vr0->max (); - /* Handle multi-ranges that can be represented as anti-ranges. */ - if (!vr1->legacy_mode_p () && vr1->maybe_anti_range ()) - { - int_range<3> tmp (*vr1); - tmp.invert (); - intersect_ranges (&vr0kind, &vr0min, &vr0max, - VR_ANTI_RANGE, tmp.min (), tmp.max ()); - } - else - intersect_ranges (&vr0kind, &vr0min, &vr0max, - vr1->kind (), vr1->min (), vr1->max ()); + + intersect_ranges (&vr0kind, &vr0min, &vr0max, + vr1->kind (), vr1->min (), vr1->max ()); /* Make sure to canonicalize the result though as the inversion of a VR_RANGE can still be a VR_RANGE. */ @@ -1427,6 +1414,9 @@ give_up: void irange::legacy_union (irange *vr0, const irange *vr1) { + gcc_checking_assert (vr0->legacy_mode_p ()); + gcc_checking_assert (vr1->legacy_mode_p ()); + /* VR0 has the resulting range if VR1 is undefined or VR0 is varying. */ if (vr1->undefined_p () || vr0->varying_p ()) @@ -1435,16 +1425,10 @@ irange::legacy_union (irange *vr0, const irange *vr1) /* VR1 has the resulting range if VR0 is undefined or VR1 is varying. */ if (vr0->undefined_p ()) { - /* Avoid the full copy if we already know both sides are simple - and can be trivially copied. */ - if (vr1->legacy_mode_p ()) - { - vr0->set (vr1->min (), vr1->max (), vr1->kind ()); - return; - } - *vr0 = *vr1; + vr0->set (vr1->min (), vr1->max (), vr1->kind ()); return; } + if (vr1->varying_p ()) { vr0->set_varying (vr1->type ()); @@ -1454,17 +1438,9 @@ irange::legacy_union (irange *vr0, const irange *vr1) value_range_kind vr0kind = vr0->kind (); tree vr0min = vr0->min (); tree vr0max = vr0->max (); - /* Handle multi-ranges that can be represented as anti-ranges. */ - if (!vr1->legacy_mode_p () && vr1->maybe_anti_range ()) - { - int_range<3> tmp (*vr1); - tmp.invert (); - union_ranges (&vr0kind, &vr0min, &vr0max, - VR_ANTI_RANGE, tmp.min (), tmp.max ()); - } - else - union_ranges (&vr0kind, &vr0min, &vr0max, - vr1->kind (), vr1->min (), vr1->max ()); + + union_ranges (&vr0kind, &vr0min, &vr0max, + vr1->kind (), vr1->min (), vr1->max ()); if (vr0kind == VR_UNDEFINED) vr0->set_undefined (); @@ -1492,6 +1468,12 @@ irange::union_ (const irange *other) { if (legacy_mode_p ()) { + if (!other->legacy_mode_p ()) + { + int_range<1> tmp = *other; + legacy_union (this, &tmp); + return; + } if (dump_file && (dump_flags & TDF_DETAILS)) { fprintf (dump_file, "Meeting\n "); @@ -1514,8 +1496,7 @@ irange::union_ (const irange *other) if (other->legacy_mode_p ()) { - int_range<2> wider; - wider = *other; + int_range<2> wider = *other; irange_union (wider); } else @@ -1527,6 +1508,12 @@ irange::intersect (const irange *other) { if (legacy_mode_p ()) { + if (!other->legacy_mode_p ()) + { + int_range<1> tmp = *other; + legacy_intersect (this, &tmp); + return; + } if (dump_file && (dump_flags & TDF_DETAILS)) { fprintf (dump_file, "Intersecting\n "); -- 2.30.2