From 4c935e2eee456ff66cdfb908b0edffdd1e8a6c04 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Sun, 24 Jun 2018 10:50:40 -0700
Subject: Add SHA256 implementation using using Intel SHA intrinsics

---
 configure.ac | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index ff7f1b39c8..2826f29ed8 100644
--- a/configure.ac
+++ b/configure.ac
@@ -319,6 +319,7 @@ fi
 AX_CHECK_COMPILE_FLAG([-msse4.2],[[SSE42_CXXFLAGS="-msse4.2"]],,[[$CXXFLAG_WERROR]])
 AX_CHECK_COMPILE_FLAG([-msse4.1],[[SSE41_CXXFLAGS="-msse4.1"]],,[[$CXXFLAG_WERROR]])
 AX_CHECK_COMPILE_FLAG([-mavx -mavx2],[[AVX2_CXXFLAGS="-mavx -mavx2"]],,[[$CXXFLAG_WERROR]])
+AX_CHECK_COMPILE_FLAG([-msse4 -msha],[[SHANI_CXXFLAGS="-msse4 -msha"]],,[[$CXXFLAG_WERROR]])
 
 TEMP_CXXFLAGS="$CXXFLAGS"
 CXXFLAGS="$CXXFLAGS $SSE42_CXXFLAGS"
@@ -380,6 +381,27 @@ AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
 )
 CXXFLAGS="$TEMP_CXXFLAGS"
 
+TEMP_CXXFLAGS="$CXXFLAGS"
+CXXFLAGS="$CXXFLAGS $SHANI_CXXFLAGS"
+AC_MSG_CHECKING(for SHA-NI intrinsics)
+AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+    #include <stdint.h>
+    #if defined(_MSC_VER)
+    #include <immintrin.h>
+    #elif defined(__GNUC__)
+    #include <x86intrin.h>
+    #endif
+  ]],[[
+    __m128i i = _mm_set1_epi32(0);
+    __m128i j = _mm_set1_epi32(1);
+    __m128i k = _mm_set1_epi32(2);
+    return _mm_extract_epi32(_mm_sha256rnds2_epu32(i, i, k), 0);
+  ]])],
+ [ AC_MSG_RESULT(yes); enable_shani=yes; AC_DEFINE(ENABLE_SHANI, 1, [Define this symbol to build code that uses SHA-NI intrinsics]) ],
+ [ AC_MSG_RESULT(no)]
+)
+CXXFLAGS="$TEMP_CXXFLAGS"
+
 CPPFLAGS="$CPPFLAGS -DHAVE_BUILD_INFO -D__STDC_FORMAT_MACROS"
 
 AC_ARG_WITH([utils],
@@ -1300,6 +1322,7 @@ AM_CONDITIONAL([HARDEN],[test x$use_hardening = xyes])
 AM_CONDITIONAL([ENABLE_HWCRC32],[test x$enable_hwcrc32 = xyes])
 AM_CONDITIONAL([ENABLE_SSE41],[test x$enable_sse41 = xyes])
 AM_CONDITIONAL([ENABLE_AVX2],[test x$enable_avx2 = xyes])
+AM_CONDITIONAL([ENABLE_SHANI],[test x$enable_shani = xyes])
 AM_CONDITIONAL([USE_ASM],[test x$use_asm = xyes])
 
 AC_DEFINE(CLIENT_VERSION_MAJOR, _CLIENT_VERSION_MAJOR, [Major version])
@@ -1344,6 +1367,7 @@ AC_SUBST(SANITIZER_LDFLAGS)
 AC_SUBST(SSE42_CXXFLAGS)
 AC_SUBST(SSE41_CXXFLAGS)
 AC_SUBST(AVX2_CXXFLAGS)
+AC_SUBST(SHANI_CXXFLAGS)
 AC_SUBST(LIBTOOL_APP_LDFLAGS)
 AC_SUBST(USE_UPNP)
 AC_SUBST(USE_QRCODE)
-- 
cgit v1.2.3


From 66b2cf1ccfad545a8ec3f2a854e23f647322bf30 Mon Sep 17 00:00:00 2001
From: Pieter Wuille <pieter.wuille@gmail.com>
Date: Mon, 11 Jun 2018 09:59:20 -0700
Subject: Use immintrin.h everywhere for intrinsics

---
 configure.ac | 12 ------------
 1 file changed, 12 deletions(-)

(limited to 'configure.ac')

diff --git a/configure.ac b/configure.ac
index 2826f29ed8..9e635994ef 100644
--- a/configure.ac
+++ b/configure.ac
@@ -348,11 +348,7 @@ CXXFLAGS="$CXXFLAGS $SSE41_CXXFLAGS"
 AC_MSG_CHECKING(for SSE4.1 intrinsics)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
     #include <stdint.h>
-    #if defined(_MSC_VER)
     #include <immintrin.h>
-    #elif defined(__GNUC__)
-    #include <x86intrin.h>
-    #endif
   ]],[[
     __m128i l = _mm_set1_epi32(0);
     return _mm_extract_epi32(l, 3);
@@ -367,11 +363,7 @@ CXXFLAGS="$CXXFLAGS $AVX2_CXXFLAGS"
 AC_MSG_CHECKING(for AVX2 intrinsics)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
     #include <stdint.h>
-    #if defined(_MSC_VER)
     #include <immintrin.h>
-    #elif defined(__GNUC__) && defined(__AVX2__)
-    #include <x86intrin.h>
-    #endif
   ]],[[
     __m256i l = _mm256_set1_epi32(0);
     return _mm256_extract_epi32(l, 7);
@@ -386,11 +378,7 @@ CXXFLAGS="$CXXFLAGS $SHANI_CXXFLAGS"
 AC_MSG_CHECKING(for SHA-NI intrinsics)
 AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
     #include <stdint.h>
-    #if defined(_MSC_VER)
     #include <immintrin.h>
-    #elif defined(__GNUC__)
-    #include <x86intrin.h>
-    #endif
   ]],[[
     __m128i i = _mm_set1_epi32(0);
     __m128i j = _mm_set1_epi32(1);
-- 
cgit v1.2.3