x86[_64] assembly pack: add Silvermont performance data.
(Imported from upstream's 9dd6240201fdd9a9a0ce2aa66df04c174d08cf99)
Change-Id: Ie0f6f876e06ac28c717ec949565f6b0126166b30
diff --git a/crypto/sha/asm/sha1-586.pl b/crypto/sha/asm/sha1-586.pl
index 59da867..8377299 100644
--- a/crypto/sha/asm/sha1-586.pl
+++ b/crypto/sha/asm/sha1-586.pl
@@ -93,16 +93,19 @@
# P4 10.6 -
# AMD K8 7.1 -
# Core2 7.3 6.0/+22% -
-# Atom 12.5 9.3(*)/+35% -
# Westmere 7.3 5.5/+33% -
# Sandy Bridge 8.8 6.2/+40% 5.1(**)/+73%
# Ivy Bridge 7.2 4.8/+51% 4.7(**)/+53%
# Haswell 6.5 4.3/+51% 4.1(**)/+58%
# Bulldozer 11.6 6.0/+92%
# VIA Nano 10.6 7.5/+41%
+# Atom 12.5 9.3(*)/+35%
+# Silvermont 14.5 9.9(*)/+46%
#
# (*) Loop is 1056 instructions long and expected result is ~8.25.
-# It remains mystery [to me] why ILP is limited to 1.7.
+# The discrepancy is because of front-end limitations, so
+# called MS-ROM penalties, and on Silvermont even rotate's
+# limited parallelism.
#
# (**) As per above comment, the result is for AVX *plus* sh[rl]d.
diff --git a/crypto/sha/asm/sha256-586.pl b/crypto/sha/asm/sha256-586.pl
index 0c2a778..6462e45 100644
--- a/crypto/sha/asm/sha256-586.pl
+++ b/crypto/sha/asm/sha256-586.pl
@@ -53,6 +53,7 @@
# Bulldozer 36 - 27/22 17.0 13.6
# VIA Nano 36 - 25/22 16.8 16.5
# Atom 50 - 30/25 21.9 18.9
+# Silvermont 40 - 34/31 22.9 20.6
#
# (*) numbers after slash are for unrolled loop, where applicable;
# (**) x86_64 assembly performance is presented for reference
diff --git a/crypto/sha/asm/sha512-586.pl b/crypto/sha/asm/sha512-586.pl
index 9fc7929..e96ec00 100644
--- a/crypto/sha/asm/sha512-586.pl
+++ b/crypto/sha/asm/sha512-586.pl
@@ -28,6 +28,7 @@
# Bulldozer 121 - 50 14.0 13.5
# VIA Nano 91 - 52 33 14.7
# Atom 126 - 68 48(***) 14.7
+# Silvermont 97 - 58 42(***) 17.5
#
# (*) whichever best applicable.
# (**) x86_64 assembler performance is presented for reference
diff --git a/crypto/sha/asm/sha512-x86_64.pl b/crypto/sha/asm/sha512-x86_64.pl
index 5a7c5ac..6660a88 100644
--- a/crypto/sha/asm/sha512-x86_64.pl
+++ b/crypto/sha/asm/sha512-x86_64.pl
@@ -89,6 +89,7 @@
# Bulldozer 21.1 13.6(+54%) 13.6(+54%(***)) 13.5 8.58(+57%)
# VIA Nano 23.0 16.5(+39%) - 14.7 -
# Atom 23.0 18.9(+22%) - 14.7 -
+# Silvermont 27.4 20.6(+33%) - 17.5 -
#
# (*) whichever best applicable;
# (**) switch from ror to shrd stands for fair share of improvement;
