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6958292: C1: Enable parallel compilation

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Enable parallel compilation in C1

Reviewed-by: never, kvn
This commit is contained in:
Igor Veresov 2010-06-04 11:18:04 -07:00
parent 36f8c82970
commit 00b75f8353
30 changed files with 328 additions and 344 deletions
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21
hotspot/src/share/vm/c1/c1_Optimizer.cpp
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@ -437,11 +437,8 @@ public:
// Because of a static contained within (for the purpose of iteration
// over instructions), it is only valid to have one of these active at
// a time
class NullCheckEliminator {
class NullCheckEliminator: public ValueVisitor {
private:
static NullCheckEliminator* _static_nce;
static void do_value(Value* vp);
Optimizer* _opt;
ValueSet* _visitable_instructions; // Visit each instruction only once per basic block
@ -504,6 +501,8 @@ class NullCheckEliminator {
// Process a graph
void iterate(BlockBegin* root);
void visit(Value* f);
// In some situations (like NullCheck(x); getfield(x)) the debug
// information from the explicit NullCheck can be used to populate
// the getfield, even if the two instructions are in different
@ -602,14 +601,11 @@ void NullCheckVisitor::do_ProfileCall (ProfileCall* x) { nce()->clear_las
void NullCheckVisitor::do_ProfileCounter (ProfileCounter* x) {}
NullCheckEliminator* NullCheckEliminator::_static_nce = NULL;
void NullCheckEliminator::do_value(Value* p) {
void NullCheckEliminator::visit(Value* p) {
assert(*p != NULL, "should not find NULL instructions");
if (_static_nce->visitable(*p)) {
_static_nce->mark_visited(*p);
(*p)->visit(&_static_nce->_visitor);
if (visitable(*p)) {
mark_visited(*p);
(*p)->visit(&_visitor);
}
}
@ -637,7 +633,6 @@ void NullCheckEliminator::iterate_all() {
void NullCheckEliminator::iterate_one(BlockBegin* block) {
_static_nce = this;
clear_visitable_state();
// clear out an old explicit null checks
set_last_explicit_null_check(NULL);
@ -712,7 +707,7 @@ void NullCheckEliminator::iterate_one(BlockBegin* block) {
mark_visitable(instr);
if (instr->is_root() || instr->can_trap() || (instr->as_NullCheck() != NULL)) {
mark_visited(instr);
instr->input_values_do(&NullCheckEliminator::do_value);
instr->input_values_do(this);
instr->visit(&_visitor);
}
}