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8151818: C1: LIRGenerator::move_to_phi can't deal with illegal phi

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Reviewed-by: iveresov, kvn
This commit is contained in:
Martin Doerr 2016-03-23 15:35:38 -07:00
parent f058b201f6
commit 9dff846b30
2 changed files with 12 additions and 4 deletions
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10
hotspot/src/share/vm/c1/c1_LIRGenerator.cpp
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@ -999,8 +999,16 @@ void LIRGenerator::move_to_phi(PhiResolver* resolver, Value cur_val, Value sux_v
Phi* phi = sux_val->as_Phi();
// cur_val can be null without phi being null in conjunction with inlining
if (phi != NULL && cur_val != NULL && cur_val != phi && !phi->is_illegal()) {
Phi* cur_phi = cur_val->as_Phi();
if (cur_phi != NULL && cur_phi->is_illegal()) {
// Phi and local would need to get invalidated
// (which is unexpected for Linear Scan).
// But this case is very rare so we simply bail out.
bailout("propagation of illegal phi");
return;
}
LIR_Opr operand = cur_val->operand();
if (cur_val->operand()->is_illegal()) {
if (operand->is_illegal()) {
assert(cur_val->as_Constant() != NULL || cur_val->as_Local() != NULL,
"these can be produced lazily");
operand = operand_for_instruction(cur_val);