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8253588: C1: assert(false) failed: unknown register on x86_32 only with -XX:+TraceLinearScanLevel=4

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Reviewed-by: thartmann, kvn
This commit is contained in:
Christian Hagedorn 2020-10-12 08:16:33 +00:00
parent 59378a19b2
commit 13fe054cb9
1 changed files with 1 additions and 1 deletions

2
src/hotspot/share/c1/c1_LinearScan.cpp

@ -5436,7 +5436,7 @@ bool LinearScanWalker::alloc_free_reg(Interval* cur) {
hint_reg = register_hint->assigned_reg();
hint_regHi = register_hint->assigned_regHi();
if (allocator()->is_precolored_cpu_interval(register_hint)) {
if (_num_phys_regs == 2 && allocator()->is_precolored_cpu_interval(register_hint)) {
assert(hint_reg != any_reg && hint_regHi == any_reg, "must be for fixed intervals");
hint_regHi = hint_reg + 1; // connect e.g. eax-edx
}