E2K: added support for MCST Elbrus 2000 CPU architecture

e2k (Elbrus 2000) - this is a VLIW/EPIC architecture,
the like Intel Itanium (IA-64) architecture.
The architecture has half native / half software support
for most Intel/AMD SIMD (e.g. MMX/SSE/SSE2/SSE3/SSSE3/SSE4.1/SSE4.2/AES/AVX/AVX2 & 3DNow!/SSE4a/XOP/FMA4) via intrinsics.

https://en.wikipedia.org/wiki/Elbrus_2000

closes https://github.com/official-stockfish/Stockfish/pull/3425

No functional change

diff --git a/AUTHORS b/AUTHORS
index c12b98a038a6df1f16f38488e75d9babca6a3585..69d682f13f2abb908fb217edc4c2a5df8f699205 100644 (file)
--- a/AUTHORS
+++ b/AUTHORS
@@ -27,6 +27,7 @@ Andy Duplain
 Antoine Champion (antoinechampion)
 Aram Tumanian (atumanian)
 Arjun Temurnikar
+Artem Solopiy (EntityFX)
 Auguste Pop
 Balint Pfliegel
 Ben Koshy (BKSpurgeon)

diff --git a/src/Makefile b/src/Makefile
index cdd2007fd2b1f1724b82da4f87fcd0ba2bcfc602..71105bdb65dba4e4cdefd92bc01452339acdeff3 100644 (file)
--- a/src/Makefile
+++ b/src/Makefile
@@ -97,6 +97,7 @@ ifeq ($(ARCH), $(filter $(ARCH), \
                  x86-64-vnni512 x86-64-vnni256 x86-64-avx512 x86-64-bmi2 x86-64-avx2 \
                  x86-64-sse41-popcnt x86-64-modern x86-64-ssse3 x86-64-sse3-popcnt \
                  x86-64 x86-32-sse41-popcnt x86-32-sse2 x86-32 ppc-64 ppc-32 \
+                 e2k \
                  armv7 armv7-neon armv8 apple-silicon general-64 general-32))
    SUPPORTED_ARCH=true
 else
@@ -291,6 +292,17 @@ ifeq ($(ARCH),ppc-64)
        prefetch = yes
 endif
 
+ifeq ($(findstring e2k,$(ARCH)),e2k)
+       arch = e2k
+       mmx = yes
+       bits = 64
+       sse = yes
+       sse2 = yes
+       ssse3 = yes
+       sse41 = yes
+       popcnt = yes
+endif
+
 endif
 
 ### ==========================================================================
@@ -514,7 +526,6 @@ ifeq ($(popcnt),yes)
        endif
 endif
 
-
 ifeq ($(avx2),yes)
        CXXFLAGS += -DUSE_AVX2
        ifeq ($(comp),$(filter $(comp),gcc clang mingw))
@@ -682,6 +693,7 @@ help:
        @echo "armv7                   > ARMv7 32-bit"
        @echo "armv7-neon              > ARMv7 32-bit with popcnt and neon"
        @echo "armv8                   > ARMv8 64-bit with popcnt and neon"
+       @echo "e2k                     > Elbrus 2000"
        @echo "apple-silicon           > Apple silicon ARM64"
        @echo "general-64              > unspecified 64-bit"
        @echo "general-32              > unspecified 32-bit"
@@ -829,6 +841,7 @@ config-sanity: net
        @test "$(SUPPORTED_ARCH)" = "true"
        @test "$(arch)" = "any" || test "$(arch)" = "x86_64" || test "$(arch)" = "i386" || \
         test "$(arch)" = "ppc64" || test "$(arch)" = "ppc" || \
+        test "$(arch)" = "e2k" || \
         test "$(arch)" = "armv7" || test "$(arch)" = "armv8" || test "$(arch)" = "arm64"
        @test "$(bits)" = "32" || test "$(bits)" = "64"
        @test "$(prefetch)" = "yes" || test "$(prefetch)" = "no"

diff --git a/src/misc.cpp b/src/misc.cpp
index 918dc7a953484924603886991a11bf5bd160be45..9e7b7e37b8cc99ddb79433033c3b5107f6b7abc6 100644 (file)
--- a/src/misc.cpp
+++ b/src/misc.cpp
@@ -51,7 +51,7 @@ typedef bool(*fun3_t)(HANDLE, CONST GROUP_AFFINITY*, PGROUP_AFFINITY);
 #include <sys/mman.h>
 #endif
 
-#if defined(__APPLE__) || defined(__ANDROID__) || defined(__OpenBSD__) || (defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC) && !defined(_WIN32))
+#if defined(__APPLE__) || defined(__ANDROID__) || defined(__OpenBSD__) || (defined(__GLIBCXX__) && !defined(_GLIBCXX_HAVE_ALIGNED_ALLOC) && !defined(_WIN32)) || defined(__e2k__)
 #define POSIXALIGNEDALLOC
 #include <stdlib.h>
 #endif
@@ -192,6 +192,18 @@ std::string compiler_info() {
      compiler += "(version ";
      compiler += stringify(_MSC_FULL_VER) "." stringify(_MSC_BUILD);
      compiler += ")";
+  #elif defined(__e2k__) && defined(__LCC__)
+    #define dot_ver2(n) \
+      compiler += (char)'.'; \
+      compiler += (char)('0' + (n) / 10); \
+      compiler += (char)('0' + (n) % 10);
+
+     compiler += "MCST LCC ";
+     compiler += "(version ";
+     compiler += std::to_string(__LCC__ / 100);
+     dot_ver2(__LCC__ % 100)
+     dot_ver2(__LCC_MINOR__)
+     compiler += ")";
   #elif __GNUC__
      compiler += "g++ (GNUC) ";
      compiler += make_version_string(__GNUC__, __GNUC_MINOR__, __GNUC_PATCHLEVEL__);