1.1 --- a/src/cpu/x86/vm/macroAssembler_x86.cpp Sun Apr 10 23:17:09 2016 -0700
1.2 +++ b/src/cpu/x86/vm/macroAssembler_x86.cpp Tue May 24 17:49:06 2016 +0530
1.3 @@ -3202,7 +3202,24 @@
1.4 jmp(done);
1.5 } else {
1.6 // Stack: X Y
1.7 - Label x_negative, y_odd;
1.8 + Label x_negative, y_not_2;
1.9 +
1.10 + static double two = 2.0;
1.11 + ExternalAddress two_addr((address)&two);
1.12 +
1.13 + // constant maybe too far on 64 bit
1.14 + lea(tmp2, two_addr);
1.15 + fld_d(Address(tmp2, 0)); // Stack: 2 X Y
1.16 + fcmp(tmp, 2, true, false); // Stack: X Y
1.17 + jcc(Assembler::parity, y_not_2);
1.18 + jcc(Assembler::notEqual, y_not_2);
1.19 +
1.20 + fxch(); fpop(); // Stack: X
1.21 + fmul(0); // Stack: X*X
1.22 +
1.23 + jmp(done);
1.24 +
1.25 + bind(y_not_2);
1.26
1.27 fldz(); // Stack: 0 X Y
1.28 fcmp(tmp, 1, true, false); // Stack: X Y
