Conditional branch to target MachineBasicBlock failed

[aaronsm]

Assembly from X86 coremark:

  400d31: 49 8b 5d 00                   movq    (%r13), %rbx
  400d35: 48 85 db                      testq   %rbx, %rbx
  400d38: 74 21                         je      33 <core_bench_list+0x59b>
  400d3a: 66 0f 1f 44 00 00             nopw    (%rax,%rax)
  400d40: 49 8b 45 08                   movq    8(%r13), %rax
  400d44: 0f bf 38                      movswl  (%rax), %edi
  400d47: 41 0f b7 f7                   movzwl  %r15w, %esi
  400d4b: e8 c0 29 00 00                callq   10688 <crc16>
  400d50: 41 89 c7                      movl    %eax, %r15d
  400d53: 48 8b 1b                      movq    (%rbx), %rbx
  400d56: 48 85 db                      testq   %rbx, %rbx
  400d59: 75 e5                         jne     -27 <core_bench_list+0x580>
  400d5b: 44 89 f8                      movl    %r15d, %eax
  400d5e: 48 83 c4 38                   addq    $56, %rsp
  400d62: 5b                            popq    %rbx
  400d63: 41 5c                         popq    %r12
  400d65: 41 5d                         popq    %r13
  400d67: 41 5e                         popq    %r14
  400d69: 41 5f                         popq    %r15
  400d6b: 5d                            popq    %rbp
  400d6c: c3                            retq

Dump from llvm-mctoll:

bb.113:
; predecessors: %bb.80
  successors: %bb.116, %bb.114, %bb.115

  $rbx = MOV64rm $r13, 1, $noreg, 0, $noreg, <0x55e9aeab55c8>
  TEST64rr $rbx, $rbx, <0x55e9aeab56e8>, implicit-def $eflags
  JCC_1 33, 4, <0x55e9aeab5808>, implicit $eflags

bb.114:
; predecessors: %bb.113


bb.115:
; predecessors: %bb.115, %bb.113
  successors: %bb.115, %bb.116

  $rax = MOV64rm $r13, 1, $noreg, 8, $noreg, <0x55e9aeab5ba8>
  $edi = MOVSX32rm16 $rax, 1, $noreg, 0, $noreg, <0x55e9aeab5cc8>
  $esi = MOVZX32rr16 $r15w, <0x55e9aeab5de8>
  CALL64pcrel32 10688, <0x55e9aeab5f08>, implicit $rsp, implicit $ssp
  $r15d = MOV32rr $eax, <0x55e9aeab6028>
  $rbx = MOV64rm $rbx, 1, $noreg, 0, $noreg, <0x55e9aeab6148>
  TEST64rr $rbx, $rbx, <0x55e9aeab6268>, implicit-def $eflags
  JCC_1 -27, 5, <0x55e9aeab6388>, implicit $eflags

The else branch target MBB of the conditional branch of JE is bb.114, but bb.114 is empty. This should jump to bb.115.