RandomX: update to v1.1.4

* Faster cache initialization with SSSE3/AVX2
* Automatic detection of CPU capabilities in RandomX
* Fixed a possible out-of-bounds access in superscalar program generator
* Use MONERO_RANDOMX_UMASK to manually disable RandomX flags in monerod

src/crypto/rx-slow-hash.c

@@ -34,6 +34,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <unistd.h>
+#include <limits.h>
 
 #include "randomx.h"
 #include "c_threads.h"
@@ -154,6 +155,43 @@ static inline int use_rx_jit(void)
 #endif
 }
 
+static inline int disabled_flags(void) {
+  static int flags = -1;
+
+  if (flags != -1) {
+    return flags;
+  }
+
+  const char *env = getenv("MONERO_RANDOMX_UMASK");
+  if (!env) {
+    flags = 0;
+  }
+  else {
+    char* endptr;
+    long int value = strtol(env, &endptr, 10);
+    if (endptr != env && value >= 0 && value < INT_MAX) {
+      flags = value;
+    }
+    else {
+      flags = 0;
+    }
+  }
+
+  return flags;
+}
+
+static inline int enabled_flags(void) {
+  static int flags = -1;
+
+  if (flags != -1) {
+    return flags;
+  }
+
+  flags = randomx_get_flags();
+
+  return flags;
+}
+
 #define SEEDHASH_EPOCH_BLOCKS	2048	/* Must be same as BLOCKS_SYNCHRONIZING_MAX_COUNT in cryptonote_config.h */
 #define SEEDHASH_EPOCH_LAG		64
 
@@ -236,7 +274,7 @@ void rx_slow_hash(const uint64_t mainheight, const uint64_t seedheight, const ch
   char *hash, int miners, int is_alt) {
   uint64_t s_height = rx_seedheight(mainheight);
   int toggle = (s_height & SEEDHASH_EPOCH_BLOCKS) != 0;
-  randomx_flags flags = RANDOMX_FLAG_DEFAULT;
+  randomx_flags flags = enabled_flags() & ~disabled_flags();
   rx_state *rx_sp;
   randomx_cache *cache;
 
@@ -263,8 +301,6 @@ void rx_slow_hash(const uint64_t mainheight, const uint64_t seedheight, const ch
 
   cache = rx_sp->rs_cache;
   if (cache == NULL) {
-    if (use_rx_jit())
-      flags |= RANDOMX_FLAG_JIT;
     if (cache == NULL) {
       cache = randomx_alloc_cache(flags | RANDOMX_FLAG_LARGE_PAGES);
       if (cache == NULL) {
@@ -282,14 +318,9 @@ void rx_slow_hash(const uint64_t mainheight, const uint64_t seedheight, const ch
     memcpy(rx_sp->rs_hash, seedhash, HASH_SIZE);
   }
   if (rx_vm == NULL) {
-    randomx_flags flags = RANDOMX_FLAG_DEFAULT;
-    if (use_rx_jit()) {
-      flags |= RANDOMX_FLAG_JIT;
-      if (!miners)
-          flags |= RANDOMX_FLAG_SECURE;
+    if ((flags & RANDOMX_FLAG_JIT) && !miners) {
+        flags |= RANDOMX_FLAG_SECURE;
     }
-    if(!force_software_aes() && check_aes_hw())
-      flags |= RANDOMX_FLAG_HARD_AES;
     if (miners) {
       CTHR_MUTEX_LOCK(rx_dataset_mutex);
       if (rx_dataset == NULL) {