src/share/vm/opto/escape.cpp

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  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 "precompiled.hpp"
  26 #include "ci/bcEscapeAnalyzer.hpp"
  27 #include "compiler/compileLog.hpp"
  28 #include "libadt/vectset.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "opto/c2compiler.hpp"
  31 #include "opto/callnode.hpp"
  32 #include "opto/cfgnode.hpp"
  33 #include "opto/compile.hpp"
  34 #include "opto/escape.hpp"
  35 #include "opto/phaseX.hpp"

  36 #include "opto/rootnode.hpp"
  37 
  38 ConnectionGraph::ConnectionGraph(Compile * C, PhaseIterGVN *igvn) :
  39   _nodes(C->comp_arena(), C->unique(), C->unique(), NULL),
  40   _collecting(true),
  41   _verify(false),
  42   _compile(C),
  43   _igvn(igvn),
  44   _node_map(C->comp_arena()) {
  45   // Add unknown java object.
  46   add_java_object(C->top(), PointsToNode::GlobalEscape);
  47   phantom_obj = ptnode_adr(C->top()->_idx)->as_JavaObject();
  48   // Add ConP(#NULL) and ConN(#NULL) nodes.
  49   Node* oop_null = igvn->zerocon(T_OBJECT);
  50   assert(oop_null->_idx < nodes_size(), "should be created already");
  51   add_java_object(oop_null, PointsToNode::NoEscape);
  52   null_obj = ptnode_adr(oop_null->_idx)->as_JavaObject();
  53   if (UseCompressedOops) {
  54     Node* noop_null = igvn->zerocon(T_NARROWOOP);
  55     assert(noop_null->_idx < nodes_size(), "should be created already");




  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 "precompiled.hpp"
  26 #include "ci/bcEscapeAnalyzer.hpp"
  27 #include "compiler/compileLog.hpp"
  28 #include "libadt/vectset.hpp"
  29 #include "memory/allocation.hpp"
  30 #include "opto/c2compiler.hpp"
  31 #include "opto/callnode.hpp"
  32 #include "opto/cfgnode.hpp"
  33 #include "opto/compile.hpp"
  34 #include "opto/escape.hpp"
  35 #include "opto/phaseX.hpp"
  36 #include "opto/movenode.hpp"
  37 #include "opto/rootnode.hpp"
  38 
  39 ConnectionGraph::ConnectionGraph(Compile * C, PhaseIterGVN *igvn) :
  40   _nodes(C->comp_arena(), C->unique(), C->unique(), NULL),
  41   _collecting(true),
  42   _verify(false),
  43   _compile(C),
  44   _igvn(igvn),
  45   _node_map(C->comp_arena()) {
  46   // Add unknown java object.
  47   add_java_object(C->top(), PointsToNode::GlobalEscape);
  48   phantom_obj = ptnode_adr(C->top()->_idx)->as_JavaObject();
  49   // Add ConP(#NULL) and ConN(#NULL) nodes.
  50   Node* oop_null = igvn->zerocon(T_OBJECT);
  51   assert(oop_null->_idx < nodes_size(), "should be created already");
  52   add_java_object(oop_null, PointsToNode::NoEscape);
  53   null_obj = ptnode_adr(oop_null->_idx)->as_JavaObject();
  54   if (UseCompressedOops) {
  55     Node* noop_null = igvn->zerocon(T_NARROWOOP);
  56     assert(noop_null->_idx < nodes_size(), "should be created already");