Upgrade from 2.7.3 to 2.8.x failed running: compiling... LLVM ERROR: Cannot select
2008R2, download built bins from release, **worked on 2.7.3** but not 2.8.x, any clue?


```
 * ABOUT        XMRig-AMD/2.8.0-rc MSVC/2017
 * LIBS         libuv/1.23.1 OpenCL/2.0 OpenSSL/1.1.1 microhttpd/0.9.59
 * CPU          AMD Athlon(tm) II X2 250 Processor x64 -AES
 * ALGO         cryptonight, donate=5%
 * POOL #1      pool.supportxmr.com:5555 variant auto
 * COMMANDS     hashrate, pause, resume
[2018-10-12 14:19:52] compiling code and initializing GPUs. This will take a whi
le...
[2018-10-12 14:19:52] found AMD platform index: 0, name: Advanced Micro Devices,
 Inc.
[2018-10-12 14:19:52] found OpenCL GPU: Capeverde, cu: 8
[2018-10-12 14:19:52] #0, GPU #0 AMD Radeon HD 7700 Series, intensity: 128 (8/25
6), unroll: 8, cu: 8
[2018-10-12 14:19:53] GPU #0 compiling...
LLVM ERROR: Cannot select: 0x6aec290: i32 = setcc 0x4f3a870, 0x6ad0bd0, 0x6aeba8
0 [ORD=3797] [ID=250]
  0x4f3a870: i64 = add 0x6ad0bd0, 0x6ad9c60 [ORD=3791] [ID=247]
    0x6ad0bd0: i64 = add 0x4f3aa70, 0x6b37c40 [ORD=3790] [ID=244]
      0x4f3aa70: i64 = mul 0x533d560, 0x6ad8350 [ORD=3789] [ID=240]
        0x533d560: i64 = zero_extend 0x6ae20f0 [ORD=3786] [ID=234]
          0x6ae20f0: i32 = add 0x6ae8450, 0x6ade3b0 [ORD=3781] [ID=229]
            0x6ae8450: i32 = AMDILISD::VEXTRACT 0x6adb380, 0x6b3c390 [ORD=3780]
[ID=226]
              0x6adb380: v2i32 = AMDILISD::BITCONV 0x4f1e4b0 [ORD=3779] [ID=222]

                0x4f1e4b0: i64 = add 0x53416a0, 0x5339f20 [ORD=3778] [ID=218]
                  0x53416a0: i64 = add 0x6ad4110, 0x6b2bb80 [ORD=3777] [ID=212]


                  0x5339f20: i64 = zero_extend 0x6adebb0 [ORD=3773] [ID=205]

              0x6b3c390: i32 = TargetConstant<2> [ORD=4080] [ID=91]
            0x6ade3b0: i32,ch = CopyFromReg 0x4ef6ab0, 0x5346df0 [ORD=3781] [ID=
108]
              0x5346df0: i32 = Register %vreg51 [ORD=3781] [ID=10]
        0x6ad8350: i64 = zero_extend 0x6ad7740 [ORD=3788] [ID=163]
          0x6ad7740: i32 = AMDILISD::VEXTRACT 0x4f28450, 0x6b3c390 [ORD=3787] [I
D=154]
            0x4f28450: v2i32 = AMDILISD::BITCONV 0x6ad9c60 [ORD=3782] [ID=132]
              0x6ad9c60: i64,ch = CopyFromReg 0x4ef6ab0, 0x6add2a0 [ORD=3782] [I
D=109]
                0x6add2a0: i64 = Register %vreg43 [ORD=3782] [ID=11]
            0x6b3c390: i32 = TargetConstant<2> [ORD=4080] [ID=91]
      0x6b37c40: i64 = zero_extend 0x6b39260 [ORD=3785] [ID=241]
        0x6b39260: i32,ch = llvm.AMDIL.mulhi.u32 0x4ef6ab0, 0x6ad3f10, 0x4e4ed60
, 0x6ae20f0 [ORD=3784] [ID=235]
          0x6ad3f10: i32 = TargetConstant<2716> [ORD=3772] [ID=6]
          0x4e4ed60: i32 = AMDILISD::VEXTRACT 0x4f28450, 0x6ae3500 [ORD=3783] [I
D=153]
            0x4f28450: v2i32 = AMDILISD::BITCONV 0x6ad9c60 [ORD=3782] [ID=132]
              0x6ad9c60: i64,ch = CopyFromReg 0x4ef6ab0, 0x6add2a0 [ORD=3782] [I
D=109]
                0x6add2a0: i64 = Register %vreg43 [ORD=3782] [ID=11]
            0x6ae3500: i32 = TargetConstant<1> [ORD=4079] [ID=89]
          0x6ae20f0: i32 = add 0x6ae8450, 0x6ade3b0 [ORD=3781] [ID=229]
            0x6ae8450: i32 = AMDILISD::VEXTRACT 0x6adb380, 0x6b3c390 [ORD=3780]
[ID=226]
              0x6adb380: v2i32 = AMDILISD::BITCONV 0x4f1e4b0 [ORD=3779] [ID=222]

                0x4f1e4b0: i64 = add 0x53416a0, 0x5339f20 [ORD=3778] [ID=218]
                  0x53416a0: i64 = add 0x6ad4110, 0x6b2bb80 [ORD=3777] [ID=212]


                  0x5339f20: i64 = zero_extend 0x6adebb0 [ORD=3773] [ID=205]

              0x6b3c390: i32 = TargetConstant<2> [ORD=4080] [ID=91]
            0x6ade3b0: i32,ch = CopyFromReg 0x4ef6ab0, 0x5346df0 [ORD=3781] [ID=
108]
              0x5346df0: i32 = Register %vreg51 [ORD=3781] [ID=10]
    0x6ad9c60: i64,ch = CopyFromReg 0x4ef6ab0, 0x6add2a0 [ORD=3782] [ID=109]
      0x6add2a0: i64 = Register %vreg43 [ORD=3782] [ID=11]
  0x6ad0bd0: i64 = add 0x4f3aa70, 0x6b37c40 [ORD=3790] [ID=244]
    0x4f3aa70: i64 = mul 0x533d560, 0x6ad8350 [ORD=3789] [ID=240]
      0x533d560: i64 = zero_extend 0x6ae20f0 [ORD=3786] [ID=234]
        0x6ae20f0: i32 = add 0x6ae8450, 0x6ade3b0 [ORD=3781] [ID=229]
          0x6ae8450: i32 = AMDILISD::VEXTRACT 0x6adb380, 0x6b3c390 [ORD=3780] [I
D=226]
            0x6adb380: v2i32 = AMDILISD::BITCONV 0x4f1e4b0 [ORD=3779] [ID=222]
              0x4f1e4b0: i64 = add 0x53416a0, 0x5339f20 [ORD=3778] [ID=218]
                0x53416a0: i64 = add 0x6ad4110, 0x6b2bb80 [ORD=3777] [ID=212]
                  0x6ad4110: i64 = mul 0x6ad7440, 0x6ad7340 [ORD=3776] [ID=206]


                  0x6b2bb80: i64 = AMDILISD::LCREATE 0x6aed9a0, 0x6ae9960 [ORD=3
769] [ID=181]


                0x5339f20: i64 = zero_extend 0x6adebb0 [ORD=3773] [ID=205]
                  0x6adebb0: i32,ch = llvm.AMDIL.mulhi.u32 0x4ef6ab0, 0x6ad3f10,
 0x6ad19e0, 0x6ad8a50 [ORD=3772] [ID=198]



            0x6b3c390: i32 = TargetConstant<2> [ORD=4080] [ID=91]
          0x6ade3b0: i32,ch = CopyFromReg 0x4ef6ab0, 0x5346df0 [ORD=3781] [ID=10
8]
            0x5346df0: i32 = Register %vreg51 [ORD=3781] [ID=10]
      0x6ad8350: i64 = zero_extend 0x6ad7740 [ORD=3788] [ID=163]
        0x6ad7740: i32 = AMDILISD::VEXTRACT 0x4f28450, 0x6b3c390 [ORD=3787] [ID=
154]
          0x4f28450: v2i32 = AMDILISD::BITCONV 0x6ad9c60 [ORD=3782] [ID=132]
            0x6ad9c60: i64,ch = CopyFromReg 0x4ef6ab0, 0x6add2a0 [ORD=3782] [ID=
109]
              0x6add2a0: i64 = Register %vreg43 [ORD=3782] [ID=11]
          0x6b3c390: i32 = TargetConstant<2> [ORD=4080] [ID=91]
    0x6b37c40: i64 = zero_extend 0x6b39260 [ORD=3785] [ID=241]
      0x6b39260: i32,ch = llvm.AMDIL.mulhi.u32 0x4ef6ab0, 0x6ad3f10, 0x4e4ed60,
0x6ae20f0 [ORD=3784] [ID=235]
        0x6ad3f10: i32 = TargetConstant<2716> [ORD=3772] [ID=6]
        0x4e4ed60: i32 = AMDILISD::VEXTRACT 0x4f28450, 0x6ae3500 [ORD=3783] [ID=
153]
          0x4f28450: v2i32 = AMDILISD::BITCONV 0x6ad9c60 [ORD=3782] [ID=132]
            0x6ad9c60: i64,ch = CopyFromReg 0x4ef6ab0, 0x6add2a0 [ORD=3782] [ID=
109]
              0x6add2a0: i64 = Register %vreg43 [ORD=3782] [ID=11]
          0x6ae3500: i32 = TargetConstant<1> [ORD=4079] [ID=89]
        0x6ae20f0: i32 = add 0x6ae8450, 0x6ade3b0 [ORD=3781] [ID=229]
          0x6ae8450: i32 = AMDILISD::VEXTRACT 0x6adb380, 0x6b3c390 [ORD=3780] [I
D=226]
            0x6adb380: v2i32 = AMDILISD::BITCONV 0x4f1e4b0 [ORD=3779] [ID=222]
              0x4f1e4b0: i64 = add 0x53416a0, 0x5339f20 [ORD=3778] [ID=218]
                0x53416a0: i64 = add 0x6ad4110, 0x6b2bb80 [ORD=3777] [ID=212]
                  0x6ad4110: i64 = mul 0x6ad7440, 0x6ad7340 [ORD=3776] [ID=206]


                  0x6b2bb80: i64 = AMDILISD::LCREATE 0x6aed9a0, 0x6ae9960 [ORD=3
769] [ID=181]


                0x5339f20: i64 = zero_extend 0x6adebb0 [ORD=3773] [ID=205]
                  0x6adebb0: i32,ch = llvm.AMDIL.mulhi.u32 0x4ef6ab0, 0x6ad3f10,
 0x6ad19e0, 0x6ad8a50 [ORD=3772] [ID=198]



            0x6b3c390: i32 = TargetConstant<2> [ORD=4080] [ID=91]
          0x6ade3b0: i32,ch = CopyFromReg 0x4ef6ab0, 0x5346df0 [ORD=3781] [ID=10
8]
            0x5346df0: i32 = Register %vreg51 [ORD=3781] [ID=10]

```