Fri, 18 Oct 2013 10:50:17 +0200
8022783: Nashorn test fails with: assert(!def_outside->member(r))
Summary: Enables private copies of inputs for recent spill copies as well
Reviewed-by: kvn, twisti
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25 #include "precompiled.hpp"
26 #include "opto/callnode.hpp"
27 #include "opto/matcher.hpp"
28 #include "opto/mathexactnode.hpp"
29 #include "opto/multnode.hpp"
30 #include "opto/opcodes.hpp"
31 #include "opto/phaseX.hpp"
32 #include "opto/regmask.hpp"
33 #include "opto/type.hpp"
35 //=============================================================================
36 //------------------------------MultiNode--------------------------------------
37 const RegMask &MultiNode::out_RegMask() const {
38 return RegMask::Empty;
39 }
41 Node *MultiNode::match( const ProjNode *proj, const Matcher *m ) { return proj->clone(); }
43 //------------------------------proj_out---------------------------------------
44 // Get a named projection
45 ProjNode* MultiNode::proj_out(uint which_proj) const {
46 assert(Opcode() != Op_If || which_proj == (uint)true || which_proj == (uint)false, "must be 1 or 0");
47 assert(Opcode() != Op_If || outcnt() == 2, "bad if #1");
48 for( DUIterator_Fast imax, i = fast_outs(imax); i < imax; i++ ) {
49 Node *p = fast_out(i);
50 if (p->is_Proj()) {
51 ProjNode *proj = p->as_Proj();
52 if (proj->_con == which_proj) {
53 assert(Opcode() != Op_If || proj->Opcode() == (which_proj?Op_IfTrue:Op_IfFalse), "bad if #2");
54 return proj;
55 }
56 } else if (p->is_FlagsProj()) {
57 FlagsProjNode *proj = p->as_FlagsProj();
58 if (proj->_con == which_proj) {
59 return proj;
60 }
61 } else {
62 assert(p == this && this->is_Start(), "else must be proj");
63 continue;
64 }
65 }
66 return NULL;
67 }
69 //=============================================================================
70 //------------------------------ProjNode---------------------------------------
71 uint ProjNode::hash() const {
72 // only one input
73 return (uintptr_t)in(TypeFunc::Control) + (_con << 1) + (_is_io_use ? 1 : 0);
74 }
75 uint ProjNode::cmp( const Node &n ) const { return _con == ((ProjNode&)n)._con && ((ProjNode&)n)._is_io_use == _is_io_use; }
76 uint ProjNode::size_of() const { return sizeof(ProjNode); }
78 // Test if we propagate interesting control along this projection
79 bool ProjNode::is_CFG() const {
80 Node *def = in(0);
81 return (_con == TypeFunc::Control && def->is_CFG());
82 }
84 const Type* ProjNode::proj_type(const Type* t) const {
85 if (t == Type::TOP) {
86 return Type::TOP;
87 }
88 if (t == Type::BOTTOM) {
89 return Type::BOTTOM;
90 }
91 t = t->is_tuple()->field_at(_con);
92 Node* n = in(0);
93 if ((_con == TypeFunc::Parms) &&
94 n->is_CallStaticJava() && n->as_CallStaticJava()->is_boxing_method()) {
95 // The result of autoboxing is always non-null on normal path.
96 t = t->join(TypePtr::NOTNULL);
97 }
98 return t;
99 }
101 const Type *ProjNode::bottom_type() const {
102 if (in(0) == NULL) return Type::TOP;
103 return proj_type(in(0)->bottom_type());
104 }
106 const TypePtr *ProjNode::adr_type() const {
107 if (bottom_type() == Type::MEMORY) {
108 // in(0) might be a narrow MemBar; otherwise we will report TypePtr::BOTTOM
109 const TypePtr* adr_type = in(0)->adr_type();
110 #ifdef ASSERT
111 if (!is_error_reported() && !Node::in_dump())
112 assert(adr_type != NULL, "source must have adr_type");
113 #endif
114 return adr_type;
115 }
116 assert(bottom_type()->base() != Type::Memory, "no other memories?");
117 return NULL;
118 }
120 bool ProjNode::pinned() const { return in(0)->pinned(); }
121 #ifndef PRODUCT
122 void ProjNode::dump_spec(outputStream *st) const { st->print("#%d",_con); if(_is_io_use) st->print(" (i_o_use)");}
123 #endif
125 //----------------------------check_con----------------------------------------
126 void ProjNode::check_con() const {
127 Node* n = in(0);
128 if (n == NULL) return; // should be assert, but NodeHash makes bogons
129 if (n->is_Mach()) return; // mach. projs. are not type-safe
130 if (n->is_Start()) return; // alas, starts can have mach. projs. also
131 if (_con == SCMemProjNode::SCMEMPROJCON ) return;
132 const Type* t = n->bottom_type();
133 if (t == Type::TOP) return; // multi is dead
134 assert(_con < t->is_tuple()->cnt(), "ProjNode::_con must be in range");
135 }
137 //------------------------------Value------------------------------------------
138 const Type *ProjNode::Value( PhaseTransform *phase ) const {
139 if (in(0) == NULL) return Type::TOP;
140 return proj_type(phase->type(in(0)));
141 }
143 //------------------------------out_RegMask------------------------------------
144 // Pass the buck uphill
145 const RegMask &ProjNode::out_RegMask() const {
146 return RegMask::Empty;
147 }
149 //------------------------------ideal_reg--------------------------------------
150 uint ProjNode::ideal_reg() const {
151 return bottom_type()->ideal_reg();
152 }