cd llvm_mode
LLVM_CONFIG=llvm-config-6.0 CC=clang-6.0 make

void ijon_xor_state(ijon_u32_t);
void ijon_push_state(ijon_u32_t);

void ijon_map_inc(ijon_u32_t);
void ijon_map_set(ijon_u32_t);

ijon_u32_t ijon_strdist(char* a,char* b);
ijon_u32_t ijon_memdist(char* a,char* b, ijon_size_t len);

void ijon_max(ijon_u32_t addr, ijon_u64_t val);

void ijon_min(ijon_u32_t addr, ijon_u64_t val);

ijon_u64_t ijon_simple_hash(ijon_u64_t val);
ijon_u32_t ijon_hashint(ijon_u32_t old, ijon_u32_t val);
ijon_u32_t ijon_hashstr(ijon_u32_t old, char* val);
ijon_u32_t ijon_hashmem(ijon_u32_t old, char* val, ijon_size_t len);

uint32_t ijon_hashstack(); //warning, can be flaky as stackunwinding is nontrivial

void ijon_enable_feedback();
void ijon_disable_feedback();

#define _IJON_CONCAT(x, y) x##y
#define _IJON_UNIQ_NAME() IJON_CONCAT(temp,__LINE__)
#define _IJON_ABS_DIST(x,y) ((x)<(y) ? (y)-(x) : (x)-(y))

#define IJON_BITS(x) ((x==0)?{0}:__builtin_clz(x))
#define IJON_INC(x) ijon_map_inc(ijon_hashstr(__LINE__,__FILE__)^(x))
#define IJON_SET(x) ijon_map_set(ijon_hashstr(__LINE__,__FILE__)^(x))

#define IJON_CTX(x) ({ uint32_t hash = hashstr(__LINE__,__FILE__); ijon_xor_state(hash); __typeof__(x) IJON_UNIQ_NAME() = (x); ijon_xor_state(hash); IJON_UNIQ_NAME(); })

#define IJON_MAX(x) ijon_max(ijon_hashstr(__LINE__,__FILE__),(x))
#define IJON_MIN(x) ijon_max(ijon_hashstr(__LINE__,__FILE__),0xffffffffffffffff-(x))
#define IJON_CMP(x,y) IJON_INC(__builtin_popcount((x)^(y)))
#define IJON_DIST(x,y) ijon_min(ijon_hashstr(__LINE__,__FILE__), _IJON_ABS_DIST(x,y))
#define IJON_STRDIST(x,y) IJON_SET(ijon_hashint(ijon_hashstack(), ijon_strdist(x,y)))