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8026054: New type profiling points: type of return values at calls

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X86 interpreter and c1 type profiling for return values at calls

Reviewed-by: kvn, twisti
This commit is contained in:
Roland Westrelin 2013-10-12 12:12:59 +02:00
parent 0fa4a576fd
commit c8bfc7e7d7
24 changed files with 814 additions and 216 deletions
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7
hotspot/src/share/vm/c1/c1_Optimizer.cpp
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@ -531,6 +531,7 @@ public:
void do_UnsafePrefetchRead (UnsafePrefetchRead* x);
void do_UnsafePrefetchWrite(UnsafePrefetchWrite* x);
void do_ProfileCall (ProfileCall* x);
void do_ProfileReturnType (ProfileReturnType* x);
void do_ProfileInvoke (ProfileInvoke* x);
void do_RuntimeCall (RuntimeCall* x);
void do_MemBar (MemBar* x);
@ -658,6 +659,7 @@ class NullCheckEliminator: public ValueVisitor {
void handle_ExceptionObject (ExceptionObject* x);
void handle_Phi (Phi* x);
void handle_ProfileCall (ProfileCall* x);
void handle_ProfileReturnType (ProfileReturnType* x);
};
@ -718,6 +720,7 @@ void NullCheckVisitor::do_UnsafePrefetchRead (UnsafePrefetchRead* x) {}
void NullCheckVisitor::do_UnsafePrefetchWrite(UnsafePrefetchWrite* x) {}
void NullCheckVisitor::do_ProfileCall (ProfileCall* x) { nce()->clear_last_explicit_null_check();
nce()->handle_ProfileCall(x); }
void NullCheckVisitor::do_ProfileReturnType (ProfileReturnType* x) { nce()->handle_ProfileReturnType(x); }
void NullCheckVisitor::do_ProfileInvoke (ProfileInvoke* x) {}
void NullCheckVisitor::do_RuntimeCall (RuntimeCall* x) {}
void NullCheckVisitor::do_MemBar (MemBar* x) {}
@ -1142,6 +1145,10 @@ void NullCheckEliminator::handle_ProfileCall(ProfileCall* x) {
}
}
void NullCheckEliminator::handle_ProfileReturnType(ProfileReturnType* x) {
x->set_needs_null_check(!set_contains(x->ret()));
}
void Optimizer::eliminate_null_checks() {
ResourceMark rm;