src/cpu/x86/vm/x86_32.ad

rev 3201 : 7153034: Fix of 6658428, emitting popcount on platforms without support
Summary: 6658428 errounously assumed match_rule_supported took hw into account
Reviewed-by:
Contributed-by: nils.eliasson@oracle.com

*** 1291,1300 ****
--- 1291,1308 ----
  
  const bool Matcher::match_rule_supported(int opcode) {
    if (!has_match_rule(opcode))
      return false;
  
+   switch (opcode) {
+     case Op_PopCountI:
+     case Op_PopCountL:
+       if (!UsePopCountInstruction)
+         return false;
+     break;
+   }
+   
    return true;  // Per default match rules are supported.
  }
  
  int Matcher::regnum_to_fpu_offset(int regnum) {
    return regnum - 32; // The FP registers are in the second chunk