10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "opto/addnode.hpp"
26 #include "opto/castnode.hpp"
27 #include "opto/connode.hpp"
28 #include "opto/convertnode.hpp"
29 #include "opto/divnode.hpp"
30 #include "opto/matcher.hpp"
31 #include "opto/movenode.hpp"
32 #include "opto/mulnode.hpp"
33 #include "opto/phaseX.hpp"
34 #include "opto/subnode.hpp"
35 #include "runtime/stubRoutines.hpp"
36 #include "utilities/checkedCast.hpp"
37
38 //=============================================================================
39 //------------------------------Identity---------------------------------------
40 Node* Conv2BNode::Identity(PhaseGVN* phase) {
41 const Type *t = phase->type( in(1) );
42 if( t == Type::TOP ) return in(1);
43 if( t == TypeInt::ZERO ) return in(1);
44 if( t == TypeInt::ONE ) return in(1);
45 if( t == TypeInt::BOOL ) return in(1);
46 return this;
47 }
48
49 //------------------------------Value------------------------------------------
50 const Type* Conv2BNode::Value(PhaseGVN* phase) const {
51 const Type *t = phase->type( in(1) );
52 if( t == Type::TOP ) return Type::TOP;
53 if( t == TypeInt::ZERO ) return TypeInt::ZERO;
54 if( t == TypePtr::NULL_PTR ) return TypeInt::ZERO;
55 const TypePtr *tp = t->isa_ptr();
56 if(tp != nullptr) {
57 if( tp->ptr() == TypePtr::AnyNull ) return Type::TOP;
58 if( tp->ptr() == TypePtr::Constant) return TypeInt::ONE;
59 if (tp->ptr() == TypePtr::NotNull) return TypeInt::ONE;
60 return TypeInt::BOOL;
61 }
62 if (t->base() != Type::Int) return TypeInt::BOOL;
63 const TypeInt *ti = t->is_int();
64 if( ti->_hi < 0 || ti->_lo > 0 ) return TypeInt::ONE;
65 return TypeInt::BOOL;
66 }
67
68 Node* Conv2BNode::Ideal(PhaseGVN* phase, bool can_reshape) {
69 if (!Matcher::match_rule_supported(Op_Conv2B)) {
70 if (phase->C->post_loop_opts_phase()) {
71 // Get type of comparison to make
72 const Type* t = phase->type(in(1));
73 Node* cmp = nullptr;
74 if (t->isa_int()) {
75 cmp = phase->transform(new CmpINode(in(1), phase->intcon(0)));
76 } else if (t->isa_ptr()) {
77 cmp = phase->transform(new CmpPNode(in(1), phase->zerocon(BasicType::T_OBJECT)));
78 } else {
79 assert(false, "Unrecognized comparison for Conv2B: %s", NodeClassNames[in(1)->Opcode()]);
80 }
81
82 // Skip the transformation if input is unexpected.
83 if (cmp == nullptr) {
84 return nullptr;
85 }
86
87 // Replace Conv2B with the cmove
88 Node* bol = phase->transform(new BoolNode(cmp, BoolTest::eq));
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10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "opto/addnode.hpp"
26 #include "opto/castnode.hpp"
27 #include "opto/connode.hpp"
28 #include "opto/convertnode.hpp"
29 #include "opto/divnode.hpp"
30 #include "opto/inlinetypenode.hpp"
31 #include "opto/matcher.hpp"
32 #include "opto/movenode.hpp"
33 #include "opto/mulnode.hpp"
34 #include "opto/phaseX.hpp"
35 #include "opto/subnode.hpp"
36 #include "runtime/stubRoutines.hpp"
37 #include "utilities/checkedCast.hpp"
38
39 //=============================================================================
40 //------------------------------Identity---------------------------------------
41 Node* Conv2BNode::Identity(PhaseGVN* phase) {
42 const Type *t = phase->type( in(1) );
43 if( t == Type::TOP ) return in(1);
44 if( t == TypeInt::ZERO ) return in(1);
45 if( t == TypeInt::ONE ) return in(1);
46 if( t == TypeInt::BOOL ) return in(1);
47 return this;
48 }
49
50 //------------------------------Value------------------------------------------
51 const Type* Conv2BNode::Value(PhaseGVN* phase) const {
52 const Type *t = phase->type( in(1) );
53 if( t == Type::TOP ) return Type::TOP;
54 if( t == TypeInt::ZERO ) return TypeInt::ZERO;
55 if( t == TypePtr::NULL_PTR ) return TypeInt::ZERO;
56 const TypePtr *tp = t->isa_ptr();
57 if(tp != nullptr) {
58 if( tp->ptr() == TypePtr::AnyNull ) return Type::TOP;
59 if( tp->ptr() == TypePtr::Constant) return TypeInt::ONE;
60 if (tp->ptr() == TypePtr::NotNull) return TypeInt::ONE;
61 return TypeInt::BOOL;
62 }
63 if (t->base() != Type::Int) return TypeInt::BOOL;
64 const TypeInt *ti = t->is_int();
65 if( ti->_hi < 0 || ti->_lo > 0 ) return TypeInt::ONE;
66 return TypeInt::BOOL;
67 }
68
69 //------------------------------Ideal------------------------------------------
70 Node* Conv2BNode::Ideal(PhaseGVN* phase, bool can_reshape) {
71 if (in(1)->is_InlineType()) {
72 // Null checking a scalarized but nullable inline type. Check the null marker
73 // input instead of the oop input to avoid keeping buffer allocations alive.
74 set_req_X(1, in(1)->as_InlineType()->get_null_marker(), phase);
75 return this;
76 }
77 if (!Matcher::match_rule_supported(Op_Conv2B)) {
78 if (phase->C->post_loop_opts_phase()) {
79 // Get type of comparison to make
80 const Type* t = phase->type(in(1));
81 Node* cmp = nullptr;
82 if (t->isa_int()) {
83 cmp = phase->transform(new CmpINode(in(1), phase->intcon(0)));
84 } else if (t->isa_ptr()) {
85 cmp = phase->transform(new CmpPNode(in(1), phase->zerocon(BasicType::T_OBJECT)));
86 } else {
87 assert(false, "Unrecognized comparison for Conv2B: %s", NodeClassNames[in(1)->Opcode()]);
88 }
89
90 // Skip the transformation if input is unexpected.
91 if (cmp == nullptr) {
92 return nullptr;
93 }
94
95 // Replace Conv2B with the cmove
96 Node* bol = phase->transform(new BoolNode(cmp, BoolTest::eq));
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