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8342701: [PPC64] TestOSRLotsOfLocals.java crashes

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Backport-of: 3bba0f3dc8faf83a3aadcd704ae2ae4967e6daa4
This commit is contained in:
Martin Doerr 2024-10-25 16:11:44 +00:00
parent b9e89a80dc
commit e56655f318
1 changed files with 19 additions and 3 deletions
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22
src/hotspot/cpu/ppc/c1_LIRAssembler_ppc.cpp
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@ -133,9 +133,20 @@ void LIR_Assembler::osr_entry() {
// copied into place by code emitted in the IR.
Register OSR_buf = osrBufferPointer()->as_register();
{ assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below");
int monitor_offset = BytesPerWord * method()->max_locals() +
(2 * BytesPerWord) * (number_of_locks - 1);
{
assert(frame::interpreter_frame_monitor_size() == BasicObjectLock::size(), "adjust code below");
const int locals_space = BytesPerWord * method()->max_locals();
int monitor_offset = locals_space + (2 * BytesPerWord) * (number_of_locks - 1);
bool use_OSR_bias = false;
if (!Assembler::is_simm16(monitor_offset + BytesPerWord) && number_of_locks > 0) {
// Offsets too large for ld instructions. Use bias.
__ add_const_optimized(OSR_buf, OSR_buf, locals_space);
monitor_offset -= locals_space;
use_OSR_bias = true;
}
// SharedRuntime::OSR_migration_begin() packs BasicObjectLocks in
// the OSR buffer using 2 word entries: first the lock and then
// the oop.
@ -161,6 +172,11 @@ void LIR_Assembler::osr_entry() {
__ ld(R0, slot_offset + 1*BytesPerWord, OSR_buf);
__ std(R0, mo.disp(), mo.base());
}
if (use_OSR_bias) {
// Restore.
__ sub_const_optimized(OSR_buf, OSR_buf, locals_space);
}
}
}