kulp@ego lightning-2.1.3 % lldb ./doc/.libs/rfib       
(lldb) target create "./doc/.libs/rfib"
Current executable set to '/Users/kulp/tmp/lightning/lightning-2.1.3/doc/.libs/rfib' (arm64).
(lldb) process launch -v DYLD_LIBRARY_PATH=./lib/.libs                                                                                      Process 53250 launched: '/Users/kulp/tmp/lightning/lightning-2.1.3/doc/.libs/rfib' (arm64)
Process 53250 stopped
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x1001a0000)
    frame #0: 0x000000010013d8bc liblightning.1.dylib`_oxxx7(_jit=0x00000001002069f0, Op=-1451229184, Rt=29, Rt2=30, Rn=31, Simm7=-20) at jit_aarch64-cpu.c:1027:5
   1024	    i.Rt2.b = Rt2;
   1025	    i.Rn.b = Rn;
   1026	    i.imm7.b = Simm7;
-> 1027	    ii(i.w);
   1028	}
   1029	
   1030	static void
Target 0: (rfib) stopped.
(lldb) bt
* thread #1, queue = 'com.apple.main-thread', stop reason = EXC_BAD_ACCESS (code=2, address=0x1001a0000)
  * frame #0: 0x000000010013d8bc liblightning.1.dylib`_oxxx7(_jit=0x00000001002069f0, Op=-1451229184, Rt=29, Rt2=30, Rn=31, Simm7=-20) at jit_aarch64-cpu.c:1027:5
    frame #1: 0x00000001001390fc liblightning.1.dylib`_prolog(_jit=0x00000001002069f0, node=0x0000000108008030) at jit_aarch64-cpu.c:2209:5
    frame #2: 0x000000010012d45c liblightning.1.dylib`_emit_code(_jit=0x00000001002069f0) at jit_aarch64.c:1427:3
    frame #3: 0x0000000100121bc0 liblightning.1.dylib`_jit_emit(_jit=0x00000001002069f0) at lightning.c:2034:14
    frame #4: 0x0000000100003d2c rfib`main(argc=1, argv=0x000000016fdff7f0) at rfib.c:47:9
    frame #5: 0x000000018e679f34 libdyld.dylib`start + 4
(lldb) frame variable
(jit_state_t *) _jit = 0x00000001002069f0
(jit_int32_t) Op = -1451229184
(jit_int32_t) Rt = 29
(jit_int32_t) Rt2 = 30
(jit_int32_t) Rn = 31
(jit_int32_t) Simm7 = -20
(instr_t) i = {
  cond2 = (b = 13)
  nzcv = (b = 13)
  defgh = (_ = 29, b = 31)
  abc = (_ = 31741, b = 6)
  imm19 = (_ = 29, b = 373727)
  immhi = (_ = 29, b = 373727)
  immlo = (_ = 162954237, b = 1)
  size = (_ = 3570685, b = 2)
  vldst_size = (_ = 1021, b = 2)
  op = (_ = 162954237, b = 1)
  Q = (_ = 699825149, b = 0)
  Rt = (b = 29)
  Rd = (b = 29)
  Rn = (_ = 29, b = 31)
  Rt2 = (_ = 1021, b = 30)
  Ra = (_ = 1021, b = 30)
  op2 = (_ = 29, b = 7)
  CRm = (_ = 253, b = 11)
  CRn = (_ = 3069, b = 7)
  op1 = (_ = 31741, b = 6)
  op0 = (_ = 424957, b = 2)
  imm3 = (_ = 1021, b = 6)
  cond = (_ = 3069, b = 7)
  opcode = (_ = 3069, b = 7)
  cmode = (_ = 3069, b = 7)
  asisdlso_opcode = (_ = 7165, b = 3)
  len = (_ = 7165, b = 3)
  Rm = (_ = 31741, b = 22)
  Rs = (_ = 31741, b = 22)
  option = (_ = 7165, b = 3)
  S = (_ = 3069, b = 1)
  hw = (_ = 1473533, b = 1)
  opc = (_ = 3570685, b = 2)
  opc1 = (_ = 3570685, b = 1)
  shift = (_ = 3570685, b = 2)
  type = (_ = 3570685, b = 2)
  ldst_size = (_ = 699825149, b = 2)
  imm6 = (_ = 1021, b = 30)
  imm4 = (_ = 1021, b = 15)
  imm5 = (_ = 31741, b = 22)
  imm7 = (_ = 31741, b = 108)
  imm8 = (_ = 7165, b = 179)
  imm9 = (_ = 3069, b = 359)
  imm12 = (_ = 1021, b = 3486)
  imm14 = (_ = 29, b = 13279)
  imm16 = (_ = 29, b = 46047)
  imm26 = (b = 28736509)
  imms = (_ = 1021, b = 30)
  immr = (_ = 31741, b = 54)
  immb = (_ = 31741, b = 6)
  immh = (_ = 424957, b = 6)
  N = (_ = 3570685, b = 0)
  index = (_ = 1021, b = 1)
  index2 = (_ = 11959293, b = 1)
  sf = (_ = 699825149, b = 1)
  H = (_ = 1021, b = 1)
  L = (_ = 1473533, b = 1)
  M = (_ = 424957, b = 1)
  b5 = (_ = 699825149, b = 1)
  b40 = (_ = 424957, b = 22)
  scale = (_ = 1021, b = 30)
  w = -1447658499
}
(lldb)