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8255579: x86: Use cmpq(Register,Address) in safepoint_poll

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Reviewed-by: eosterlund, zgu
This commit is contained in:
Aleksey Shipilev 2020-10-29 12:25:11 +00:00
parent 72ff8e2118
commit 4b20e460dc
1 changed files with 1 additions and 1 deletions
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2
src/hotspot/cpu/x86/macroAssembler_x86.cpp
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@ -2765,7 +2765,7 @@ void MacroAssembler::safepoint_poll(Label& slow_path, Register thread_reg, bool
if (at_return) {
// Note that when in_nmethod is set, the stack pointer is incremented before the poll. Therefore,
// we may safely use rsp instead to perform the stack watermark check.
cmpq(Address(thread_reg, Thread::polling_word_offset()), in_nmethod ? rsp : rbp);
cmpq(in_nmethod ? rsp : rbp, Address(thread_reg, Thread::polling_word_offset()));
jcc(Assembler::above, slow_path);
return;
}