x86: Remove str{n}{case}cmp-ssse3

With SSE2, SSE4.1, AVX2, and EVEX versions very few targets prefer
SSSE3. As a result it is no longer worth it to keep the SSSE3
versions given the code size cost.
Reviewed-by: H.J. Lu <hjl.tools@gmail.com>

9 files changed, 0 insertions, 77 deletions

diff --git a/sysdeps/x86_64/multiarch/Makefile b/sysdeps/x86_64/multiarch/Makefile
index 51222dfab1..ed2def288d 100644
--- a/sysdeps/x86_64/multiarch/Makefile
+++ b/sysdeps/x86_64/multiarch/Makefile
@@ -58,7 +58,6 @@ sysdep_routines += \
   strcasecmp_l-evex \
   strcasecmp_l-sse2 \
   strcasecmp_l-sse4_2 \
-  strcasecmp_l-ssse3 \
   strcat-avx2 \
   strcat-avx2-rtm \
   strcat-evex \
@@ -80,7 +79,6 @@ sysdep_routines += \
   strcmp-sse2 \
   strcmp-sse2-unaligned \
   strcmp-sse4_2 \
-  strcmp-ssse3 \
   strcpy-avx2 \
   strcpy-avx2-rtm \
   strcpy-evex \
@@ -98,7 +96,6 @@ sysdep_routines += \
   strncase_l-evex \
   strncase_l-sse2 \
   strncase_l-sse4_2 \
-  strncase_l-ssse3 \
   strncat-avx2 \
   strncat-avx2-rtm \
   strncat-c \
@@ -110,7 +107,6 @@ sysdep_routines += \
   strncmp-evex \
   strncmp-sse2 \
   strncmp-sse4_2 \
-  strncmp-ssse3 \
   strncpy-avx2 \
   strncpy-avx2-rtm \
   strncpy-c \
diff --git a/sysdeps/x86_64/multiarch/ifunc-impl-list.c b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
index f389928a4e..7e2be3554b 100644
--- a/sysdeps/x86_64/multiarch/ifunc-impl-list.c
+++ b/sysdeps/x86_64/multiarch/ifunc-impl-list.c
@@ -448,9 +448,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 	      IFUNC_IMPL_ADD (array, i, strcasecmp,
 			      CPU_FEATURE_USABLE (SSE4_2),
 			      __strcasecmp_sse42)
-	      IFUNC_IMPL_ADD (array, i, strcasecmp,
-			      CPU_FEATURE_USABLE (SSSE3),
-			      __strcasecmp_ssse3)
 	      IFUNC_IMPL_ADD (array, i, strcasecmp, 1, __strcasecmp_sse2))
 
   /* Support sysdeps/x86_64/multiarch/strcasecmp_l.c.  */
@@ -469,9 +466,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 	      IFUNC_IMPL_ADD (array, i, strcasecmp_l,
 			      CPU_FEATURE_USABLE (SSE4_2),
 			      __strcasecmp_l_sse42)
-	      IFUNC_IMPL_ADD (array, i, strcasecmp_l,
-			      CPU_FEATURE_USABLE (SSSE3),
-			      __strcasecmp_l_ssse3)
 	      IFUNC_IMPL_ADD (array, i, strcasecmp_l, 1,
 			      __strcasecmp_l_sse2))
 
@@ -560,8 +554,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 			      __strcmp_evex)
 	      IFUNC_IMPL_ADD (array, i, strcmp, CPU_FEATURE_USABLE (SSE4_2),
 			      __strcmp_sse42)
-	      IFUNC_IMPL_ADD (array, i, strcmp, CPU_FEATURE_USABLE (SSSE3),
-			      __strcmp_ssse3)
 	      IFUNC_IMPL_ADD (array, i, strcmp, 1, __strcmp_sse2_unaligned)
 	      IFUNC_IMPL_ADD (array, i, strcmp, 1, __strcmp_sse2))
 
@@ -604,9 +596,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 	      IFUNC_IMPL_ADD (array, i, strncasecmp,
 			      CPU_FEATURE_USABLE (SSE4_2),
 			      __strncasecmp_sse42)
-	      IFUNC_IMPL_ADD (array, i, strncasecmp,
-			      CPU_FEATURE_USABLE (SSSE3),
-			      __strncasecmp_ssse3)
 	      IFUNC_IMPL_ADD (array, i, strncasecmp, 1,
 			      __strncasecmp_sse2))
 
@@ -626,9 +615,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 	      IFUNC_IMPL_ADD (array, i, strncasecmp_l,
 			      CPU_FEATURE_USABLE (SSE4_2),
 			      __strncasecmp_l_sse42)
-	      IFUNC_IMPL_ADD (array, i, strncasecmp_l,
-			      CPU_FEATURE_USABLE (SSSE3),
-			      __strncasecmp_l_ssse3)
 	      IFUNC_IMPL_ADD (array, i, strncasecmp_l, 1,
 			      __strncasecmp_l_sse2))
 
@@ -1054,8 +1040,6 @@ __libc_ifunc_impl_list (const char *name, struct libc_ifunc_impl *array,
 			      __strncmp_evex)
 	      IFUNC_IMPL_ADD (array, i, strncmp, CPU_FEATURE_USABLE (SSE4_2),
 			      __strncmp_sse42)
-	      IFUNC_IMPL_ADD (array, i, strncmp, CPU_FEATURE_USABLE (SSSE3),
-			      __strncmp_ssse3)
 	      IFUNC_IMPL_ADD (array, i, strncmp, 1, __strncmp_sse2))
 
 #ifdef SHARED
diff --git a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
index 766539c241..296d32071b 100644
--- a/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
+++ b/sysdeps/x86_64/multiarch/ifunc-strcasecmp.h
@@ -20,7 +20,6 @@
 #include <init-arch.h>
 
 extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden;
-extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden;
 extern __typeof (REDIRECT_NAME) OPTIMIZE (sse42) attribute_hidden;
 extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2) attribute_hidden;
 extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_rtm) attribute_hidden;
@@ -49,8 +48,5 @@ IFUNC_SELECTOR (void)
       && !CPU_FEATURES_ARCH_P (cpu_features, Slow_SSE4_2))
     return OPTIMIZE (sse42);
 
-  if (CPU_FEATURE_USABLE_P (cpu_features, SSSE3))
-    return OPTIMIZE (ssse3);
-
   return OPTIMIZE (sse2);
 }
diff --git a/sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S b/sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S
deleted file mode 100644
index fb2f9ae14a..0000000000
--- a/sysdeps/x86_64/multiarch/strcasecmp_l-ssse3.S
+++ /dev/null
@@ -1,6 +0,0 @@
-#define USE_SSSE3 1
-#define USE_AS_STRCASECMP_L
-#define NO_NOLOCALE_ALIAS
-#define STRCMP __strcasecmp_l_ssse3
-#define __strcasecmp __strcasecmp_ssse3
-#include "../strcmp.S"
diff --git a/sysdeps/x86_64/multiarch/strcmp-ssse3.S b/sysdeps/x86_64/multiarch/strcmp-ssse3.S
deleted file mode 100644
index 1b7fa33c91..0000000000
--- a/sysdeps/x86_64/multiarch/strcmp-ssse3.S
+++ /dev/null
@@ -1,5 +0,0 @@
-#if IS_IN (libc)
-# define USE_SSSE3 1
-# define STRCMP __strcmp_ssse3
-# include "../strcmp.S"
-#endif
diff --git a/sysdeps/x86_64/multiarch/strcmp.c b/sysdeps/x86_64/multiarch/strcmp.c
index 68cb73baad..a248c2a6e6 100644
--- a/sysdeps/x86_64/multiarch/strcmp.c
+++ b/sysdeps/x86_64/multiarch/strcmp.c
@@ -28,7 +28,6 @@
 
 extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden;
 extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2_unaligned) attribute_hidden;
-extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden;
 extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2) attribute_hidden;
 extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_rtm) attribute_hidden;
 extern __typeof (REDIRECT_NAME) OPTIMIZE (evex) attribute_hidden;
@@ -56,9 +55,6 @@ IFUNC_SELECTOR (void)
   if (CPU_FEATURES_ARCH_P (cpu_features, Fast_Unaligned_Load))
     return OPTIMIZE (sse2_unaligned);
 
-  if (CPU_FEATURE_USABLE_P (cpu_features, SSSE3))
-    return OPTIMIZE (ssse3);
-
   return OPTIMIZE (sse2);
 }
 
diff --git a/sysdeps/x86_64/multiarch/strncase_l-ssse3.S b/sysdeps/x86_64/multiarch/strncase_l-ssse3.S
deleted file mode 100644
index 6728678688..0000000000
--- a/sysdeps/x86_64/multiarch/strncase_l-ssse3.S
+++ /dev/null
@@ -1,6 +0,0 @@
-#define USE_SSSE3 1
-#define USE_AS_STRNCASECMP_L
-#define NO_NOLOCALE_ALIAS
-#define STRCMP __strncasecmp_l_ssse3
-#define __strncasecmp __strncasecmp_ssse3
-#include "../strcmp.S"
diff --git a/sysdeps/x86_64/multiarch/strncmp-ssse3.S b/sysdeps/x86_64/multiarch/strncmp-ssse3.S
deleted file mode 100644
index ec37308347..0000000000
--- a/sysdeps/x86_64/multiarch/strncmp-ssse3.S
+++ /dev/null
@@ -1,28 +0,0 @@
-/* strcmp optimized with SSSE3.
-   Copyright (C) 2017-2022 Free Software Foundation, Inc.
-   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
-   <https://www.gnu.org/licenses/>.  */
-
-#include <sysdep.h>
-
-#define STRCMP __strncmp_ssse3
-
-#undef libc_hidden_builtin_def
-#define libc_hidden_builtin_def(strcmp)
-
-#define USE_SSSE3 1
-#define USE_AS_STRNCMP
-#include <sysdeps/x86_64/strcmp.S>
diff --git a/sysdeps/x86_64/multiarch/strncmp.c b/sysdeps/x86_64/multiarch/strncmp.c
index fca74199d8..70ae6547c9 100644
--- a/sysdeps/x86_64/multiarch/strncmp.c
+++ b/sysdeps/x86_64/multiarch/strncmp.c
@@ -27,7 +27,6 @@
 # include <init-arch.h>
 
 extern __typeof (REDIRECT_NAME) OPTIMIZE (sse2) attribute_hidden;
-extern __typeof (REDIRECT_NAME) OPTIMIZE (ssse3) attribute_hidden;
 extern __typeof (REDIRECT_NAME) OPTIMIZE (sse42) attribute_hidden;
 extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2) attribute_hidden;
 extern __typeof (REDIRECT_NAME) OPTIMIZE (avx2_rtm) attribute_hidden;
@@ -57,9 +56,6 @@ IFUNC_SELECTOR (void)
       && !CPU_FEATURES_ARCH_P (cpu_features, Slow_SSE4_2))
     return OPTIMIZE (sse42);
 
-  if (CPU_FEATURE_USABLE_P (cpu_features, SSSE3))
-    return OPTIMIZE (ssse3);
-
   return OPTIMIZE (sse2);
 }