Mesa 10.3.4 / LLVM 3.5.0 / libclc 0.0.1_pre20141027 seems to be unable to
compile the OpenCL function S2KItSaltedSHA1Generator from current
John-The-Ripper Git [1].

The function is too long to quote here, but the signature is:
inline void S2KItSaltedSHA1Generator(__global const uchar *password, int
password_length, __global const uchar *salt, int count, __global uchar *key,
int length)

My hardware as reported by JTR is:
# /usr/sbin/john -list=opencl-devices
Platform #0 name: Default
Platform version: OpenCL 1.1 MESA 10.3.4
        Device #0 (0) name:     AMD REDWOOD
        Device vendor:          X.Org
        Device type:            GPU (LE)
        Device version:         OpenCL 1.1 MESA 10.3.4
        Driver version:         10.3.4
        Native vector widths:   char 16, short 8, int 4, long 2
        Preferred vector width: char 16, short 8, int 4, long 2
        Global Memory:          1024.0 MB
        Local Memory:           32.0 KB (Local)
        Max memory alloc. size: 256.2 MB
        Max clock (MHz):        700
        Max Work Group Size:    256
        Parallel compute cores: 5

[1]
https://github.com/magnumripper/JohnTheRipper/blob/bleeding-jumbo/src/opencl/gpg_kernel.cl#L369