Add initial fixes to get MMseqs2 working on s390x

CMakeLists.txt

@@ -15,6 +15,7 @@ set(HAVE_SSE2 0 CACHE BOOL "Have CPU with SSE2")
 set(HAVE_POWER9 0 CACHE BOOL "Have POWER9 CPU")
 set(HAVE_POWER8 0 CACHE BOOL "Have POWER8 CPU")
 set(HAVE_ARM8 0 CACHE BOOL "Have ARMv8 CPU")
+set(HAVE_S390X 0 CACHE BOOL "Have s390x architecture")
 set(NATIVE_ARCH 1 CACHE BOOL "Assume native architecture for SIMD. Use one of the HAVE_* options or set CMAKE_CXX_FLAGS to the appropriate flags if you disable this.")
 set(USE_SYSTEM_ZSTD 0 CACHE BOOL "Use zstd provided by system instead of bundled version")
 
@@ -71,6 +72,9 @@ elseif (HAVE_POWER8)
 elseif (HAVE_ARM8)
     set(MMSEQS_ARCH "${MMSEQS_ARCH} -march=armv8-a+simd")
     set(ARM 1)
+elseif (HAVE_S390X)
+    set(MMSEQS_ARCH "${MMSEQS_ARCH} -mzarch -march=z14")
+    set(ZARCH 1)
 endif ()
 
 if (NATIVE_ARCH AND (MMSEQS_ARCH STREQUAL ""))
@@ -82,6 +86,8 @@ if (NATIVE_ARCH AND (MMSEQS_ARCH STREQUAL ""))
         set(X64 1)
     elseif (CMAKE_SYSTEM_PROCESSOR MATCHES "x86|X86")
         set(X86 1)
+    elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^s390")
+        set(ZARCH 1)
     elseif(CMAKE_SYSTEM_PROCESSOR MATCHES "^sparc")
         set(SPARC 1)
     else ()
@@ -154,7 +160,7 @@ if ((CMAKE_CXX_COMPILER_ID STREQUAL "Clang" AND CMAKE_CXX_COMPILER_VERSION VERSI
     set(DISABLE_IPS4O 1)
 endif ()
 
-if (PPC64 OR SPARC)
+if (PPC64 OR SPARC OR ZARCH)
     # FIXME: investigate why on ppc the regression seems to fail randomly
     set(DISABLE_IPS4O 1)
 endif ()

src/commons/Orf.cpp

@@ -207,7 +207,11 @@ inline bool isInCodons(const char* sequence, simd_int codons, simd_int) {
     // s: ATGA GTGA TGAT GAGT
     // c: ATGA ATGA ATGA ATGA
     simd_int c = simdi32_set(*(unsigned int*)sequence);
+#if SIMDE_ENDIAN_ORDER == SIMDE_ENDIAN_LITTLE
     simd_int mask = simdi32_set(0x00FFFFFF);
+#else
+    simd_int mask = simdi32_set(0xFFFFFF00);
+#endif
     // c: ATG0 ATG0 ATG0 ATG0
     c = simdi_and(mask, c);
     // t: FFFF 0000 0000 0000

src/commons/itoa.h

@@ -26,8 +26,26 @@ THE SOFTWARE.
 #include <cstdint>
 
 #define SIMDE_ENABLE_NATIVE_ALIASES
-#include <simde/x86/sse2.h>
+#include <simde/simde-common.h>
 
+#if SIMDE_ENDIAN_ORDER != SIMDE_ENDIAN_LITTLE
+class Itoa{
+public:
+    static char* u32toa_sse2(uint32_t value, char* buffer) {
+        return buffer + sprintf(buffer, "%d", value) + 1;
+    }
+    static char* i32toa_sse2(int32_t value, char* buffer) {
+        return buffer + sprintf(buffer, "%d", value) + 1;
+    }
+    static char* u64toa_sse2(uint64_t value, char* buffer) {
+        return buffer + sprintf(buffer, "%zu", value) + 1;
+    }
+    static char* i64toa_sse2(uint64_t value, char* buffer) {
+        return buffer + sprintf(buffer, "%zu", value) + 1;
+    }
+};
+#else
+#include <simde/x86/sse2.h>
 // FIXME: NEON throws many warnings due to the reinterpret casts
 #pragma GCC diagnostic push
 #pragma GCC diagnostic ignored "-Wstrict-aliasing"
@@ -309,3 +327,4 @@ class Itoa{
 #pragma GCC diagnostic pop
 
 #endif
+#endif