aarch64: Remove non-temporal load/stores from oryon-1's memcpy

The hardware architects have a new recommendation not to use
non-temporal load/stores for memcpy. This patch removes this path.
I found there was no difference in the memcpy speed with/without
non-temporal load/stores either.

Signed-off-by: Andrew Pinski <quic_apinski@quicinc.com>
Reviewed-by: Adhemerval Zanella  <adhemerval.zanella@linaro.org>

diff --git a/sysdeps/aarch64/multiarch/memcpy_oryon1.S b/sysdeps/aarch64/multiarch/memcpy_oryon1.S
index 4efc43df28dd45fc54ca59f8adba0f69dc0eee1e..6cae97dc962a17a8c7844b262e19eb5e3f6dfadb 100644 (file)
--- a/sysdeps/aarch64/multiarch/memcpy_oryon1.S
+++ b/sysdeps/aarch64/multiarch/memcpy_oryon1.S
@@ -160,46 +160,6 @@ L(copy96):
        .p2align 6
 L(copy_long):
 
-       /* On oryon1 cores, large memcpy's are helped by using ldnp/stnp.
-          This loop is identical to the one below it but using ldnp/stnp
-          instructions.  For loops that are less than 32768 bytes,
-          the ldnp/stnp instructions will not help and will cause a slow
-          down so only use the ldnp/stnp loop for the largest sizes.  */
-
-       cmp     count, #32768
-       b.lo    L(copy_long_without_nontemp)
-       and     tmp1, dstin, 15
-       bic     dst, dstin, 15
-       ldnp    D_l, D_h, [src]
-       sub     src, src, tmp1
-       add     count, count, tmp1      /* Count is now 16 too large.  */
-       ldnp    A_l, A_h, [src, 16]
-       stnp    D_l, D_h, [dstin]
-       ldnp    B_l, B_h, [src, 32]
-       ldnp    C_l, C_h, [src, 48]
-       ldnp    D_l, D_h, [src, 64]
-       add     src, src, #64
-       subs    count, count, 128 + 16  /* Test and readjust count.  */
-
-L(nontemp_loop64):
-       tbz     src, #6, 1f
-1:
-       stnp    A_l, A_h, [dst, 16]
-       ldnp    A_l, A_h, [src, 16]
-       stnp    B_l, B_h, [dst, 32]
-       ldnp    B_l, B_h, [src, 32]
-       stnp    C_l, C_h, [dst, 48]
-       ldnp    C_l, C_h, [src, 48]
-       stnp    D_l, D_h, [dst, 64]
-       ldnp    D_l, D_h, [src, 64]
-       add     src, src, #64
-       add     dst, dst, #64
-       subs    count, count, 64
-       b.hi    L(nontemp_loop64)
-       b       L(last64)
-
-L(copy_long_without_nontemp):
-
        and     tmp1, dstin, 15
        bic     dst, dstin, 15
        ldp     D_l, D_h, [src]