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7193318: C2: remove number of inputs requirement from Node's new operator

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Deleted placement new operator of Node - node(size_t, Compile *, int).

Reviewed-by: kvn, twisti
This commit is contained in:
Bharadwaj Yadavalli 2012-09-27 09:38:42 -07:00 • committed by Vladimir Kozlov
parent 973fdc81a1
commit d5d2e78faa
44 changed files with 1456 additions and 1473 deletions
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16
hotspot/src/share/vm/opto/node.cpp
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@ -296,6 +296,14 @@ inline int Node::Init(int req, Compile* C) {
assert(Compile::current() == C, "must use operator new(Compile*)");
int idx = C->next_unique();
// Allocate memory for the necessary number of edges.
if (req > 0) {
// Allocate space for _in array to have double alignment.
_in = (Node **) ((char *) (C->node_arena()->Amalloc_D(req * sizeof(void*))));
#ifdef ASSERT
_in[req-1] = this; // magic cookie for assertion check
#endif
}
// If there are default notes floating around, capture them:
Node_Notes* nn = C->default_node_notes();
if (nn != NULL) init_node_notes(C, idx, nn);
@ -1004,15 +1012,15 @@ const Type *Node::Value( PhaseTransform * ) const {
// set_req(2, phase->intcon(7));
// return this;
// Example: reshape "X*4" into "X<<2"
// return new (C,3) LShiftINode(in(1), phase->intcon(2));
// return new (C) LShiftINode(in(1), phase->intcon(2));
//
// You must call 'phase->transform(X)' on any new Nodes X you make, except
// for the returned root node. Example: reshape "X*31" with "(X<<5)-X".
// Node *shift=phase->transform(new(C,3)LShiftINode(in(1),phase->intcon(5)));
// return new (C,3) AddINode(shift, in(1));
// Node *shift=phase->transform(new(C)LShiftINode(in(1),phase->intcon(5)));
// return new (C) AddINode(shift, in(1));
//
// When making a Node for a constant use 'phase->makecon' or 'phase->intcon'.
// These forms are faster than 'phase->transform(new (C,1) ConNode())' and Do
// These forms are faster than 'phase->transform(new (C) ConNode())' and Do
// The Right Thing with def-use info.
//
// You cannot bury the 'this' Node inside of a graph reshape. If the reshaped