void LIR_Assembler::record_non_safepoint_debug_info() {
int pc_offset = _pending_non_safepoint_offset;
ValueStack* vstack = debug_info(_pending_non_safepoint);
int bci = vstack->bci();
DebugInformationRecorder* debug_info = compilation()->debug_info_recorder();
assert(debug_info->recording_non_safepoints(), "sanity");
debug_info->add_non_safepoint(pc_offset);
// Visit scopes from oldest to youngest.
for (int n = 0; ; n++) {
int s_bci = bci;
ValueStack* s = nth_oldest(vstack, n, s_bci);
if (s == NULL) break;
IRScope* scope = s->scope();
//Always pass false for reexecute since these ScopeDescs are never used for deopt
debug_info->describe_scope(pc_offset, scope->method(), s->bci(), false/*reexecute*/);
}
debug_info->end_non_safepoint(pc_offset);
}
// Index caller states in s, where 0 is the oldest, 1 its callee, etc.
// Return NULL if n is too large.
// Returns the caller_bci for the next-younger state, also.
static ValueStack* nth_oldest(ValueStack* s, int n, int& bci_result) {
ValueStack* t = s;
for (int i = 0; i < n; i++) {
if (t == NULL) break;
t = t->caller_state();
}
if (t == NULL) return NULL;
for (;;) {
ValueStack* tc = t->caller_state();
if (tc == NULL) return s;
t = tc;
bci_result = tc->bci();
s = s->caller_state();
}
}