src/hotspot/cpu/x86/x86.ad

rev 49190 : Add support for vector popcount

@@ -1221,10 +1221,14 @@
     case Op_PopCountI:
     case Op_PopCountL:
       if (!UsePopCountInstruction)
         ret_value = false;
       break;
+    case Op_PopCountVI:
+      if (!UsePopCountInstruction || !VM_Version::support_avx512_vpopcntdq() || UseAVX <= 2)
+        ret_value = false;
+      break;
     case Op_MulVI:
       if ((UseSSE < 4) && (UseAVX < 1)) // only with SSE4_1 or AVX
         ret_value = false;
       break;
     case Op_MulVL:

@@ -10786,5 +10790,51 @@
     int vector_len = 2;
     __ vfmaf($c$$XMMRegister, $a$$XMMRegister, $b$$Address, $c$$XMMRegister, vector_len);
   %}
   ins_pipe( pipe_slow );
 %}
+
+// --------------------------------- PopCount --------------------------------------
+
+instruct vpopcount2I(vecD dst, vecD src) %{
+  predicate(UseAVX > 2 && VM_Version::support_avx512_vpopcntdq() && UsePopCountInstruction);
+  match(Set dst (PopCountVI src));
+  format %{ "vpopcntd  $dst,$src\t! vector popcount packed2I" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpopcntd($dst$$XMMRegister, $src$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vpopcount4I(vecX dst, vecX src) %{
+  predicate(UseAVX > 2 && VM_Version::support_avx512_vpopcntdq() && UsePopCountInstruction);
+  match(Set dst (PopCountVI src));
+  format %{ "vpopcntd  $dst,$src\t! vector popcount packed4I" %}
+  ins_encode %{
+    int vector_len = 0;
+    __ vpopcntd($dst$$XMMRegister, $src$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vpopcount8I(vecY dst, vecY src) %{
+  predicate(UseAVX > 2 && VM_Version::support_avx512_vpopcntdq() && UsePopCountInstruction);
+  match(Set dst (PopCountVI src));
+  format %{ "vpopcntd  $dst,$src\t! vector popcount packed8I" %}
+  ins_encode %{
+    int vector_len = 1;
+    __ vpopcntd($dst$$XMMRegister, $src$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}
+
+instruct vpopcount16I(vecZ dst, vecZ src) %{
+  predicate(UseAVX > 2 && VM_Version::support_avx512_vpopcntdq() && UsePopCountInstruction);
+  match(Set dst (PopCountVI src));
+  format %{ "vpopcntd  $dst,$src\t! vector popcount packed16I" %}
+  ins_encode %{
+    int vector_len = 2;
+    __ vpopcntd($dst$$XMMRegister, $src$$XMMRegister, vector_len);
+  %}
+  ins_pipe( pipe_slow );
+%}