// Native stub for Contination.pin() to invoke CONT_pin
                                                            
00000219`01df2390 8984240080ffff mov dword ptr [rsp-8000h],eax
00000219`01df2397 55 push rbp
00000219`01df2398 488bec mov rbp,rsp
00000219`01df239b 4883ec60 sub rsp,60h
00000219`01df239f 90 nop
00000219`01df23a0 41817f2003000000 cmp dword ptr [r15+20h],3
00000219`01df23a8 7405 je 00000219`01df23af
00000219`01df23aa e8315465ff call 00000219`014477e0
00000219`01df23af 49be78ec2b0206000000 mov r14,6022BEC78h
00000219`01df23b9 4c89742450 mov qword ptr [rsp+50h],r14
00000219`01df23be 4c8d742450 lea r14,[rsp+50h]
00000219`01df23c3 498bd6 mov rdx,r14
00000219`01df23c6 c5f877 vzeroupper
00000219`01df23c9 49bac623df0119020000 mov r10,21901DF23C6h
00000219`01df23d3 4d8997a8030000 mov qword ptr [r15+3A8h],r10 // ljf
00000219`01df23da 4989a7a0030000 mov qword ptr [r15+3A0h],rsp
00000219`01df23e1 498d8fc0030000 lea rcx,[r15+3C0h] // JNI Environment
00000219`01df23e8 41c7875004000004000000 mov dword ptr [r15+450h],4 // Transtion state to _thread_in_native
00000219`01df23f3 48b8a0eb163dfc7f0000 mov rax,offset jvm!CONT_pin (00007ffc`3d16eba0)
00000219`01df23fd ffd0 call rax
00000219`01df23ff c5f877 vzeroupper
00000219`01df2402 41c7875004000005000000 mov dword ptr [r15+450h],5
00000219`01df240d f0834424c000 lock add dword ptr [rsp-40h],0 <<--- serializing instruction
00000219`01df2413 493baf58040000 cmp rbp,qword ptr [r15+458h]
00000219`01df241a 0f870e000000 ja 00000219`01df242e
00000219`01df2420 4183bf4c04000000 cmp dword ptr [r15+44Ch],0
00000219`01df2428 0f8423000000 je 00000219`01df2451
00000219`01df242e c5f877 vzeroupper
00000219`01df2431 498bcf mov rcx,r15
00000219`01df2434 4c8be4 mov r12,rsp
00000219`01df2437 4883ec20 sub rsp,20h
00000219`01df243b 4883e4f0 and rsp,0FFFFFFFFFFFFFFF0h
00000219`01df243f 48b8f0ce2f3dfc7f0000 mov rax,offset jvm!JavaThread::check_special_condition_for_native_trans (00007ffc`3d2fcef0)
00000219`01df2449 ffd0 call rax
00000219`01df244b 498be4 mov rsp,r12
00000219`01df244e 4d33e4 xor r12,r12
00000219`01df2451 41c7875004000008000000 mov dword ptr [r15+450h],8
00000219`01df245c 4183bfe004000002 cmp dword ptr [r15+4E0h],2
00000219`01df2464 0f843c000000 je 00000219`01df24a6
00000219`01df246a 49c787a003000000000000 mov qword ptr [r15+3A0h],0
00000219`01df2475 49c787a803000000000000 mov qword ptr [r15+3A8h],0
00000219`01df2480 c5f877 vzeroupper
00000219`01df2483 498b8f30040000 mov rcx,qword ptr [r15+430h]
00000219`01df248a c7810001000000000000 mov dword ptr [rcx+100h],0
00000219`01df2494 c9 leave
00000219`01df2495 49837f0800 cmp qword ptr [r15+8],0
00000219`01df249a 0f8501000000 jne 00000219`01df24a1
00000219`01df24a0 c3 ret
                                                           
Instruction tracing to return address 00000219`01df57ec
    2 0 [ 0] 0x00000219`01df2397
    1 0 [ 0] 0x00000219`01df2398
    1 0 [ 0] 0x00000219`01df239b
    1 0 [ 0] 0x00000219`01df239f
    1 0 [ 0] 0x00000219`01df23a0
    1 0 [ 0] 0x00000219`01df23a8
    1 0 [ 0] 0x00000219`01df23af
    1 0 [ 0] 0x00000219`01df23b9
    1 0 [ 0] 0x00000219`01df23be
    1 0 [ 0] 0x00000219`01df23c3
    1 0 [ 0] 0x00000219`01df23c6
    1 0 [ 0] 0x00000219`01df23c9
    1 0 [ 0] 0x00000219`01df23d3
    1 0 [ 0] 0x00000219`01df23da
    1 0 [ 0] 0x00000219`01df23e1
    1 0 [ 0] 0x00000219`01df23e8
    1 0 [ 0] 0x00000219`01df23f3
    1 0 [ 0] 0x00000219`01df23fd
   12 0 [ 1] jvm!CONT_pin
    4 0 [ 2] jvm!OrderAccess::StubRoutines_fence
    1 0 [ 2] 0x00000219`014110ba
    1 0 [ 2] 0x00000219`014110c0
   48 6 [ 1] jvm!CONT_pin
   11 0 [ 2] jvm!JavaFrameAnchor::make_walkable
   54 17 [ 1] jvm!CONT_pin
    1 71 [ 0] 0x00000219`01df23fd
    1 0 [ 0] 0x00000219`01df23ff
    1 0 [ 0] 0x00000219`01df2402
    1 0 [ 0] 0x00000219`01df240d
    1 0 [ 0] 0x00000219`01df2413
    1 0 [ 0] 0x00000219`01df241a
    1 0 [ 0] 0x00000219`01df2420
    1 0 [ 0] 0x00000219`01df2428
    1 0 [ 0] 0x00000219`01df2451
    1 0 [ 0] 0x00000219`01df245c
    1 0 [ 0] 0x00000219`01df2464
    1 0 [ 0] 0x00000219`01df246a
    1 0 [ 0] 0x00000219`01df2475
    1 0 [ 0] 0x00000219`01df2480
    1 0 [ 0] 0x00000219`01df2483
    1 0 [ 0] 0x00000219`01df248a
    1 0 [ 0] 0x00000219`01df2494
    1 0 [ 0] 0x00000219`01df2495
    1 0 [ 0] 0x00000219`01df249a
    1 0 [ 0] 0x00000219`01df24a0

109 instructions were executed in 108 events (0 from other threads)

Function Name Invocations MinInst MaxInst AvgInst
0x00000219`014110ba 1 1 1 1
0x00000219`014110c0 1 1 1 1
0x00000219`01df2397 1 2 2 2
0x00000219`01df2398 1 1 1 1
0x00000219`01df239b 1 1 1 1
0x00000219`01df239f 1 1 1 1
0x00000219`01df23a0 1 1 1 1
0x00000219`01df23a8 1 1 1 1
0x00000219`01df23af 1 1 1 1
0x00000219`01df23b9 1 1 1 1
0x00000219`01df23be 1 1 1 1
0x00000219`01df23c3 1 1 1 1
0x00000219`01df23c6 1 1 1 1
0x00000219`01df23c9 1 1 1 1
0x00000219`01df23d3 1 1 1 1
0x00000219`01df23da 1 1 1 1
0x00000219`01df23e1 1 1 1 1
0x00000219`01df23e8 1 1 1 1
0x00000219`01df23f3 1 1 1 1
0x00000219`01df23fd 1 1 1 1
0x00000219`01df23ff 1 1 1 1
0x00000219`01df2402 1 1 1 1
0x00000219`01df240d 1 1 1 1
0x00000219`01df2413 1 1 1 1
0x00000219`01df241a 1 1 1 1
0x00000219`01df2420 1 1 1 1
0x00000219`01df2428 1 1 1 1
0x00000219`01df2451 1 1 1 1
0x00000219`01df245c 1 1 1 1
0x00000219`01df2464 1 1 1 1
0x00000219`01df246a 1 1 1 1
0x00000219`01df2475 1 1 1 1
0x00000219`01df2480 1 1 1 1
0x00000219`01df2483 1 1 1 1
0x00000219`01df248a 1 1 1 1
0x00000219`01df2494 1 1 1 1
0x00000219`01df2495 1 1 1 1
0x00000219`01df249a 1 1 1 1
0x00000219`01df24a0 1 1 1 1
jvm!CONT_pin 1 54 54 54
jvm!JavaFrameAnchor::make_walkable 1 11 11 11
jvm!OrderAccess::StubRoutines_fence 1 4 4 4

0 system calls were executed
                                                            

108 instructions + 4 instructions == 112 instructions (including spill and restore for calls to Continuation.pin() and Continuation.unpin())


// Continuation.pin() as intrinsic

0x0000012580a0f6a8: mov r10,QWORD PTR [r15+0x550] ;*invokestatic pin {reexecute=1 rethrow=0 return_oop=0} // load last_continuation
0x0000012580a0f6af: test r10,r10 ; null check last_continuation
0x0000012580a0f6b2: je 0x0000012580a0f6c9 ; no last continuation mounted --> regular thread
0x0000012580a0f6b4: mov r9d,DWORD PTR [r10+0x38] ; load pin count
0x0000012580a0f6b8: cmp r9d,0xffffffff ; check pin count for overflow
0x0000012580a0f6bc: je 0x0000012580a0fb0c ; uncommon trap for overflow (restart in interpreter to throw IllegalStateException)
0x0000012580a0f6c2: inc r9d ; increment pin count
0x0000012580a0f6c5: mov DWORD PTR [r10+0x38],r9d ; store back updated pin count

Only 8 instructions when intrinsified.