1 files changed, 0 insertions, 69 deletions
diff --git a/src/include/mb/pg_wchar.h b/src/include/mb/pg_wchar.h
index 25276b199fe..06a56a41bb8 100644
--- a/src/include/mb/pg_wchar.h
+++ b/src/include/mb/pg_wchar.h
@@ -19,8 +19,6 @@
 #ifndef PG_WCHAR_H
 #define PG_WCHAR_H
 
-#include "port/simd.h"
-
 /*
  * The pg_wchar type
  */
@@ -702,71 +700,4 @@ extern int	mic2latin_with_table(const unsigned char *mic, unsigned char *p,
 extern WCHAR *pgwin32_message_to_UTF16(const char *str, int len, int *utf16len);
 #endif
 
-
-/*
- * Verify a chunk of bytes for valid ASCII.
- *
- * Returns false if the input contains any zero bytes or bytes with the
- * high-bit set. Input len must be a multiple of the chunk size (8 or 16).
- */
-static inline bool
-is_valid_ascii(const unsigned char *s, int len)
-{
-	const unsigned char *const s_end = s + len;
-	Vector8		chunk;
-	Vector8		highbit_cum = vector8_broadcast(0);
-#ifdef USE_NO_SIMD
-	Vector8		zero_cum = vector8_broadcast(0x80);
-#endif
-
-	Assert(len % sizeof(chunk) == 0);
-
-	while (s < s_end)
-	{
-		vector8_load(&chunk, s);
-
-		/* Capture any zero bytes in this chunk. */
-#ifdef USE_NO_SIMD
-
-		/*
-		 * First, add 0x7f to each byte. This sets the high bit in each byte,
-		 * unless it was a zero. If any resulting high bits are zero, the
-		 * corresponding high bits in the zero accumulator will be cleared.
-		 *
-		 * If none of the bytes in the chunk had the high bit set, the max
-		 * value each byte can have after the addition is 0x7f + 0x7f = 0xfe,
-		 * and we don't need to worry about carrying over to the next byte. If
-		 * any input bytes did have the high bit set, it doesn't matter
-		 * because we check for those separately.
-		 */
-		zero_cum &= (chunk + vector8_broadcast(0x7F));
-#else
-
-		/*
-		 * Set all bits in each lane of the highbit accumulator where input
-		 * bytes are zero.
-		 */
-		highbit_cum = vector8_or(highbit_cum,
-								 vector8_eq(chunk, vector8_broadcast(0)));
-#endif
-
-		/* Capture all set bits in this chunk. */
-		highbit_cum = vector8_or(highbit_cum, chunk);
-
-		s += sizeof(chunk);
-	}
-
-	/* Check if any high bits in the high bit accumulator got set. */
-	if (vector8_is_highbit_set(highbit_cum))
-		return false;
-
-#ifdef USE_NO_SIMD
-	/* Check if any high bits in the zero accumulator got cleared. */
-	if (zero_cum != vector8_broadcast(0x80))
-		return false;
-#endif
-
-	return true;
-}
-
 #endif							/* PG_WCHAR_H */