Update contrib/libs/simdjson to 3.12.2

commit_hash:1da1e7f4c8215c30ac33f0a481944ca35188e1fa

2 files changed, 8 insertions, 4 deletions

diff --git a/contrib/libs/simdjson/include/simdjson/icelake/simd.h b/contrib/libs/simdjson/include/simdjson/icelake/simd.h
index 04203f4b9a5..a37ef957c9f 100644
--- a/contrib/libs/simdjson/include/simdjson/icelake/simd.h
+++ b/contrib/libs/simdjson/include/simdjson/icelake/simd.h
@@ -148,14 +148,18 @@ namespace simd {
 
     // Copies to 'output" all bytes corresponding to a 0 in the mask (interpreted as a bitset).
     // Passing a 0 value for mask would be equivalent to writing out every byte to output.
-    // Only the first 32 - count_ones(mask) bytes of the result are significant but 32 bytes
+    // Only the first 64 - count_ones(mask) bytes of the result are significant but 64 bytes
     // get written.
     // Design consideration: it seems like a function with the
     // signature simd8<L> compress(uint32_t mask) would be
     // sensible, but the AVX ISA makes this kind of approach difficult.
     template<typename L>
     simdjson_inline void compress(uint64_t mask, L * output) const {
-      _mm512_mask_compressstoreu_epi8 (output,~mask,*this);
+      // we deliberately avoid _mm512_mask_compressstoreu_epi8 for portability
+      // (AMD Zen4 has terrible performance with it, it is effectively broken)
+      // _mm512_mask_compressstoreu_epi8 (output,~mask,*this);
+      __m512i compressed = _mm512_maskz_compress_epi8(~mask, *this);
+      _mm512_storeu_si512(output, compressed); // could use a mask
     }
 
     template<typename L>
diff --git a/contrib/libs/simdjson/include/simdjson/simdjson_version.h b/contrib/libs/simdjson/include/simdjson/simdjson_version.h
index ae279016397..d61c07c01fb 100644
--- a/contrib/libs/simdjson/include/simdjson/simdjson_version.h
+++ b/contrib/libs/simdjson/include/simdjson/simdjson_version.h
@@ -4,7 +4,7 @@
 #define SIMDJSON_SIMDJSON_VERSION_H
 
 /** The version of simdjson being used (major.minor.revision) */
-#define SIMDJSON_VERSION "3.12.1"
+#define SIMDJSON_VERSION "3.12.2"
 
 namespace simdjson {
 enum {
@@ -19,7 +19,7 @@ enum {
   /**
    * The revision (major.minor.REVISION) of simdjson being used.
    */
-  SIMDJSON_VERSION_REVISION = 1
+  SIMDJSON_VERSION_REVISION = 2
 };
 } // namespace simdjson