AArch64: Use __memcpy_simd on Neoverse N2/V1

Add CPU detection of Neoverse N2 and Neoverse V1, and select __memcpy_simd as
the memcpy/memmove ifunc.

Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>
(cherry picked from commit e11ed9d2b4558eeacff81557dc9557001af42a6b)

diff --git a/sysdeps/aarch64/multiarch/memcpy.c b/sysdeps/aarch64/multiarch/memcpy.c
index be23c1ef02a4825c3f5258f8831fc8eb413f6b4d..1528d89e5404e09cad1bfcd6d7ba502f24ea5b23 100644 (file)
--- a/sysdeps/aarch64/multiarch/memcpy.c
+++ b/sysdeps/aarch64/multiarch/memcpy.c
@@ -41,7 +41,8 @@ libc_ifunc (__libc_memcpy,
                ? __memcpy_falkor
                : (IS_THUNDERX2 (midr) || IS_THUNDERX2PA (midr)
                  ? __memcpy_thunderx2
-                 : (IS_NEOVERSE_N1 (midr)
+                 : (IS_NEOVERSE_N1 (midr) || IS_NEOVERSE_N2 (midr)
+                    || IS_NEOVERSE_V1 (midr)
                     ? __memcpy_simd
                     : __memcpy_generic)))));
 

diff --git a/sysdeps/aarch64/multiarch/memmove.c b/sysdeps/aarch64/multiarch/memmove.c
index e1194c1618d0527c091c93939cf2626e8850b5a7..621af2b2968de1d0978dd52e1ddd1ce2a931ea54 100644 (file)
--- a/sysdeps/aarch64/multiarch/memmove.c
+++ b/sysdeps/aarch64/multiarch/memmove.c
@@ -38,7 +38,8 @@ libc_ifunc (__libc_memmove,
             ? __memmove_thunderx
             : (IS_FALKOR (midr) || IS_PHECDA (midr)
                ? __memmove_falkor
-                 : (IS_NEOVERSE_N1 (midr)
+                 : (IS_NEOVERSE_N1 (midr) || IS_NEOVERSE_N2 (midr)
+                    || IS_NEOVERSE_V1 (midr)
                     ? __memmove_simd
                     : __memmove_generic))));
 

diff --git a/sysdeps/unix/sysv/linux/aarch64/cpu-features.h b/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
index 342e06eaf41c87f150eafd9945702a89d519d18b..35c707239527c3c3c9a2bfcc496c7faf8d03cd06 100644 (file)
--- a/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
+++ b/sysdeps/unix/sysv/linux/aarch64/cpu-features.h
@@ -53,6 +53,10 @@
                         && MIDR_PARTNUM(midr) == 0x000)
 #define IS_NEOVERSE_N1(midr) (MIDR_IMPLEMENTOR(midr) == 'A'                  \
                              && MIDR_PARTNUM(midr) == 0xd0c)
+#define IS_NEOVERSE_N2(midr) (MIDR_IMPLEMENTOR(midr) == 'A'                  \
+                             && MIDR_PARTNUM(midr) == 0xd49)
+#define IS_NEOVERSE_V1(midr) (MIDR_IMPLEMENTOR(midr) == 'A'                  \
+                             && MIDR_PARTNUM(midr) == 0xd40)
 
 struct cpu_features
 {