public static int dontOptimize;
public static int simple(){ return dontOptimize; } And JITed version of that: 0x00007fdc75112aa0: mov %eax,-0x14000(%rsp) 0x00007fdc75112aa7: push %rbp 0x00007fdc75112aa8: sub $0x30,%rsp *0x00007fdc75112aac*: mov $0x7fdc7443be90,%rax ; {metadata(method data for {method} {0x00007fdc7443bb30} 'simple' '()I' in 'Main')} 0x00007fdc75112ab6: mov 0xdc(%rax),%esi 0x00007fdc75112abc: add $0x8,%esi 0x00007fdc75112abf: mov %esi,0xdc(%rax) 0x00007fdc75112ac5: mov $0x7fdc7443bb30,%rax ; {metadata({method} { 0x00007fdc7443bb30} 'simple' '()I' in 'Main')} 0x00007fdc75112acf: and $0x1ff8,%esi 0x00007fdc75112ad5: cmp $0x0,%esi *0x00007fdc75112ad8*: je 0x00007fdc75112af7 0x00007fdc75112ade: mov $0x76d2414f0,%rax ; {oop(a 'java/lang/Class' = 'Main')} 0x00007fdc75112ae8: mov 0x68(%rax),%eax ;*getstatic dontOptimize ; - Main::simple@0 (line 11) 0x00007fdc75112aeb: add $0x30,%rsp 0x00007fdc75112aef: pop %rbp 0x00007fdc75112af0: test %eax,0x1861060a(%rip) # 0x00007fdc8d723100 ; {poll_return} 0x00007fdc75112af6: retq Though I know understand I cannot understand a such simple code. Especially, what does lines between 0x00007fdc75112aac-*0x00007fdc75112ad8* means? I highlighted it. -- You received this message because you are subscribed to the Google Groups "mechanical-sympathy" group. To unsubscribe from this group and stop receiving emails from it, send an email to mechanical-sympathy+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.