From: caoyzh <caoyazhen_ok@163.com>
Date: Tue, 14 Apr 2020 13:29:43 +0000 (+0800)
Subject: revert ZSTD_reduceTable_internal()'s modificatiion
X-Git-Tag: v1.4.5^2~36
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a7e34ff693483177948fed563105a11843e9f590;p=thirdparty%2Fzstd.git

revert ZSTD_reduceTable_internal()'s modificatiion
---

diff --git a/lib/compress/zstd_compress.c b/lib/compress/zstd_compress.c
index b2830b01e..ff8a00e6b 100644
--- a/lib/compress/zstd_compress.c
+++ b/lib/compress/zstd_compress.c
@@ -1865,20 +1865,6 @@ ZSTD_reduceTable_internal (U32* const table, U32 const size, U32 const reducerVa
 
     for (rowNb=0 ; rowNb < nbRows ; rowNb++) {
         int column;
-#ifdef __aarch64__
-        for (column=0; column<ZSTD_ROWSIZE; column+=4) {
-            uint32x4_t const zero = {0, 0, 0, 0};
-            uint32x4_t const reducer = vdupq_n_u32(reducerValue);
-            uint32x4_t data = vld1q_u32(table + cellNb);
-            if (preserveMark) {
-                uint32x4_t const mark = {ZSTD_DUBT_UNSORTED_MARK, ZSTD_DUBT_UNSORTED_MARK, ZSTD_DUBT_UNSORTED_MARK, ZSTD_DUBT_UNSORTED_MARK};
-                data = vbslq_u32(vceqq_u32(data, mark), vaddq_u32(data, reducer), data);
-            }
-            data = vbslq_u32(vcltq_u32(data, reducer), zero, vsubq_u32(data, reducer));
-            vst1q_u32(table + cellNb, data);
-            cellNb+=4;
-        }
-#else
         for (column=0; column<ZSTD_ROWSIZE; column++) {
             if (preserveMark) {
                 U32 const adder = (table[cellNb] == ZSTD_DUBT_UNSORTED_MARK) ? reducerValue : 0;
@@ -1887,9 +1873,7 @@ ZSTD_reduceTable_internal (U32* const table, U32 const size, U32 const reducerVa
             if (table[cellNb] < reducerValue) table[cellNb] = 0;
             else table[cellNb] -= reducerValue;
             cellNb++;
-        }
-#endif
-    }
+    }   }
 }
 
 static void ZSTD_reduceTable(U32* const table, U32 const size, U32 const reducerValue)