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8341893: AArch64: Micro-optimize compressed ptr decoding

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Reviewed-by: aph, fyang
This commit is contained in:
Aleksey Shipilev 2024-10-14 07:55:38 +00:00
parent 037f11b864
commit e3f6503937
1 changed files with 3 additions and 1 deletions
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4
src/hotspot/cpu/aarch64/macroAssembler_aarch64.cpp
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@ -5011,8 +5011,10 @@ void MacroAssembler::decode_heap_oop(Register d, Register s) {
verify_heapbase("MacroAssembler::decode_heap_oop: heap base corrupted?"); verify_heapbase("MacroAssembler::decode_heap_oop: heap base corrupted?");
#endif #endif
if (CompressedOops::base() == nullptr) { if (CompressedOops::base() == nullptr) {
if (CompressedOops::shift() != 0 || d != s) { if (CompressedOops::shift() != 0) {
lsl(d, s, CompressedOops::shift()); lsl(d, s, CompressedOops::shift());
} else if (d != s) {
mov(d, s);
} }
} else { } else {
Label done; Label done;