src/cpu/x86/vm/interpreter_x86_64.cpp

rev 3227 : 7133857: exp() and pow() should use the x87 ISA on x86
Summary: use x87 instructions to implement exp() and pow() in interpreter/c1/c2.
Reviewed-by:

*** 269,278 ****
--- 269,286 ----
            __ flog();
            break;
        case Interpreter::java_lang_math_log10:
            __ flog10();
            break;
+       case Interpreter::java_lang_math_pow:
+           __ fld_d(Address(rsp, 3*wordSize)); // second argument (one
+                                               // empty stack slot)
+           __ pow_with_fallback(0);
+           break;
+       case Interpreter::java_lang_math_exp:
+           __ exp_with_fallback(0);
+            break;
        default                              :
            ShouldNotReachHere();
      }
  
      // return double result in xmm0 for interpreter and compilers.