Opting for a more common intrinsic.

include/jsonparser/simdjson_internal.h

@@ -10,7 +10,7 @@
 
 #include <iostream>
 #include <iomanip>
-//#define MAX_JSON_BYTES 0xFFFFFF
+
 
 const u32 MAX_DEPTH = 256;
 const u32 DEPTH_SAFETY_MARGIN = 32; // should be power-of-2 as we check this
@@ -20,7 +20,13 @@ const u32 REDLINE_DEPTH = MAX_DEPTH - DEPTH_SAFETY_MARGIN;
 const size_t MAX_TAPE_ENTRIES = 127 * 1024;
 const size_t MAX_TAPE = MAX_DEPTH * MAX_TAPE_ENTRIES;
 
+/////////////
 // TODO: move this to be more like a real class
+// currently, you need to create it like so...
+// ParsedJson *pj_ptr = allocate_ParsedJson(numberofbytes); // allocate memory for parsing up to numberofbytes
+// and we clear it like so deallocate_ParsedJson(pj_ptr); 
+// That's obviously not very C++-ish. It should be trivial to add a constructor and a destructor.
+////////////
 struct ParsedJson {
 public:
   size_t bytecapacity; // indicates how many bits are meant to be supported by

include/jsonparser/stringparsing.h

@@ -109,7 +109,7 @@ really_inline  bool parse_string(const u8 *buf, UNUSED size_t len,
 #endif // CHECKUNESCAPED
 
     u32 quote_dist = _mm_tzcnt_64(quote_bits);
-    u32 bs_dist = _mm_tzcnt_64(bs_bits);
+    u32 bs_dist = __tzcnt_u64(bs_bits);
     // store to dest unconditionally - we can overwrite the bits we don't like
     // later
     _mm256_storeu_si256((m256 *)(dst), v);

src/stage2_flatten.cpp

@@ -21,7 +21,7 @@
 #endif
 
 #define SET_BIT(i)                                                             \
-  base_ptr[base + i] = (u32)idx + _mm_tzcnt_64(s);                          \
+  base_ptr[base + i] = (u32)idx + __tzcnt_u64(s);                          \
   s = s & (s - 1);
 
 #define SET_BIT1 SET_BIT(0)