--- old/src/cpu/sparc/vm/assembler_sparc.hpp	2016-12-01 16:34:58.479030046 +0000
+++ new/src/cpu/sparc/vm/assembler_sparc.hpp	2016-12-01 16:34:58.185854883 +0000
@@ -133,6 +133,7 @@
     fzero_op3    = 0x36,
     fsrc_op3     = 0x36,
     fnot_op3     = 0x36,
+    lzcnt_op3    = 0x36,
     xmulx_op3    = 0x36,
     crc32c_op3   = 0x36,
     impdep2_op3  = 0x37,
@@ -195,6 +196,7 @@
     fnegs_opf          = 0x05,
     fnegd_opf          = 0x06,
 
+    lzcnt_opf          = 0x17,
     alignaddr_opf      = 0x18,
     bmask_opf          = 0x19,
 
@@ -1224,6 +1226,8 @@
 
   // VIS3 instructions
 
+  inline void lzcnt( Register s, Register d );
+
   inline void movstosw( FloatRegister s, Register d );
   inline void movstouw( FloatRegister s, Register d );
   inline void movdtox(  FloatRegister s, Register d );