Prepare for radical source tree reorganization.zack/build-layout-experiment

All top-level files and directories are moved into a temporary storage
directory, REORG.TODO, except for files that will certainly still
exist in their current form at top level when we're done (COPYING,
COPYING.LIB, LICENSES, NEWS, README), all old ChangeLog files (which
are moved to the new directory OldChangeLogs, instead), and the
generated file INSTALL (which is just deleted; in the new order, there
will be no generated files checked into version control).

1 files changed, 0 insertions, 145 deletions

diff --git a/sysdeps/x86_64/multiarch/strspn-c.c b/sysdeps/x86_64/multiarch/strspn-c.c
deleted file mode 100644
index 1704606b80..0000000000
--- a/sysdeps/x86_64/multiarch/strspn-c.c
+++ /dev/null
@@ -1,145 +0,0 @@
-/* strspn with SSE4.2 intrinsics
-   Copyright (C) 2009-2017 Free Software Foundation, Inc.
-   Contributed by Intel Corporation.
-   This file is part of the GNU C Library.
-
-   The GNU C Library is free software; you can redistribute it and/or
-   modify it under the terms of the GNU Lesser General Public
-   License as published by the Free Software Foundation; either
-   version 2.1 of the License, or (at your option) any later version.
-
-   The GNU C Library is distributed in the hope that it will be useful,
-   but WITHOUT ANY WARRANTY; without even the implied warranty of
-   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
-   Lesser General Public License for more details.
-
-   You should have received a copy of the GNU Lesser General Public
-   License along with the GNU C Library; if not, see
-   <http://www.gnu.org/licenses/>.  */
-
-#include <nmmintrin.h>
-#include <string.h>
-#include "varshift.h"
-
-/* We use 0x12:
-	_SIDD_SBYTE_OPS
-	| _SIDD_CMP_EQUAL_ANY
-	| _SIDD_NEGATIVE_POLARITY
-	| _SIDD_LEAST_SIGNIFICANT
-   on pcmpistri to compare xmm/mem128
-
-   0 1 2 3 4 5 6 7 8 9 A B C D E F
-   X X X X X X X X X X X X X X X X
-
-   against xmm
-
-   0 1 2 3 4 5 6 7 8 9 A B C D E F
-   A A A A A A A A A A A A A A A A
-
-   to find out if the first 16byte data element has any non-A byte and
-   the offset of the first byte.  There are 2 cases:
-
-   1. The first 16byte data element has the non-A byte, including
-      EOS, at the offset X.
-   2. The first 16byte data element is valid and doesn't have the non-A
-      byte.
-
-   Here is the table of ECX, CFlag, ZFlag and SFlag for 2 cases:
-
-   case		ECX	CFlag	ZFlag	SFlag
-    1		 X	  1	 0/1	  0
-    2		16	  0	  0	  0
-
-   We exit from the loop for case 1.  */
-
-extern size_t __strspn_sse2 (const char *, const char *);
-
-
-size_t
-__attribute__ ((section (".text.sse4.2")))
-__strspn_sse42 (const char *s, const char *a)
-{
-  if (*a == 0)
-    return 0;
-
-  const char *aligned;
-  __m128i mask;
-  int offset = (int) ((size_t) a & 15);
-  if (offset != 0)
-    {
-      /* Load masks.  */
-      aligned = (const char *) ((size_t) a & -16L);
-      __m128i mask0 = _mm_load_si128 ((__m128i *) aligned);
-
-      mask = __m128i_shift_right (mask0, offset);
-
-      /* Find where the NULL terminator is.  */
-      int length = _mm_cmpistri (mask, mask, 0x3a);
-      if (length == 16 - offset)
-	{
-	  /* There is no NULL terminator.  */
-	  __m128i mask1 = _mm_load_si128 ((__m128i *) (aligned + 16));
-	  int index = _mm_cmpistri (mask1, mask1, 0x3a);
-	  length += index;
-
-	  /* Don't use SSE4.2 if the length of A > 16.  */
-	  if (length > 16)
-	    return __strspn_sse2 (s, a);
-
-	  if (index != 0)
-	    {
-	      /* Combine mask0 and mask1.  We could play games with
-		 palignr, but frankly this data should be in L1 now
-		 so do the merge via an unaligned load.  */
-	      mask = _mm_loadu_si128 ((__m128i *) a);
-	    }
-	}
-    }
-  else
-    {
-      /* A is aligned.  */
-      mask = _mm_load_si128 ((__m128i *) a);
-
-      /* Find where the NULL terminator is.  */
-      int length = _mm_cmpistri (mask, mask, 0x3a);
-      if (length == 16)
-	{
-	  /* There is no NULL terminator.  Don't use SSE4.2 if the length
-	     of A > 16.  */
-	  if (a[16] != 0)
-	    return __strspn_sse2 (s, a);
-	}
-    }
-
-  offset = (int) ((size_t) s & 15);
-  if (offset != 0)
-    {
-      /* Check partial string.  */
-      aligned = (const char *) ((size_t) s & -16L);
-      __m128i value = _mm_load_si128 ((__m128i *) aligned);
-
-      value = __m128i_shift_right (value, offset);
-
-      int length = _mm_cmpistri (mask, value, 0x12);
-      /* No need to check CFlag since it is always 1.  */
-      if (length < 16 - offset)
-	return length;
-      /* Find where the NULL terminator is.  */
-      int index = _mm_cmpistri (value, value, 0x3a);
-      if (index < 16 - offset)
-	return length;
-      aligned += 16;
-    }
-  else
-    aligned = s;
-
-  while (1)
-    {
-      __m128i value = _mm_load_si128 ((__m128i *) aligned);
-      int index = _mm_cmpistri (mask, value, 0x12);
-      int cflag = _mm_cmpistrc (mask, value, 0x12);
-      if (cflag)
-	return (size_t) (aligned + index - s);
-      aligned += 16;
-    }
-}