1.1 --- a/src/cpu/x86/vm/stubGenerator_x86_64.cpp Tue Oct 14 06:58:58 2008 -0700
1.2 +++ b/src/cpu/x86/vm/stubGenerator_x86_64.cpp Tue Oct 14 15:10:26 2008 -0700
1.3 @@ -1251,6 +1251,7 @@
1.4 }
1.5 }
1.6
1.7 +
1.8 // Copy big chunks forward
1.9 //
1.10 // Inputs:
1.11 @@ -1268,14 +1269,22 @@
1.12 Label L_loop;
1.13 __ align(16);
1.14 __ BIND(L_loop);
1.15 - __ movq(to, Address(end_from, qword_count, Address::times_8, -24));
1.16 - __ movq(Address(end_to, qword_count, Address::times_8, -24), to);
1.17 - __ movq(to, Address(end_from, qword_count, Address::times_8, -16));
1.18 - __ movq(Address(end_to, qword_count, Address::times_8, -16), to);
1.19 - __ movq(to, Address(end_from, qword_count, Address::times_8, - 8));
1.20 - __ movq(Address(end_to, qword_count, Address::times_8, - 8), to);
1.21 - __ movq(to, Address(end_from, qword_count, Address::times_8, - 0));
1.22 - __ movq(Address(end_to, qword_count, Address::times_8, - 0), to);
1.23 + if(UseUnalignedLoadStores) {
1.24 + __ movdqu(xmm0, Address(end_from, qword_count, Address::times_8, -24));
1.25 + __ movdqu(Address(end_to, qword_count, Address::times_8, -24), xmm0);
1.26 + __ movdqu(xmm1, Address(end_from, qword_count, Address::times_8, - 8));
1.27 + __ movdqu(Address(end_to, qword_count, Address::times_8, - 8), xmm1);
1.28 +
1.29 + } else {
1.30 + __ movq(to, Address(end_from, qword_count, Address::times_8, -24));
1.31 + __ movq(Address(end_to, qword_count, Address::times_8, -24), to);
1.32 + __ movq(to, Address(end_from, qword_count, Address::times_8, -16));
1.33 + __ movq(Address(end_to, qword_count, Address::times_8, -16), to);
1.34 + __ movq(to, Address(end_from, qword_count, Address::times_8, - 8));
1.35 + __ movq(Address(end_to, qword_count, Address::times_8, - 8), to);
1.36 + __ movq(to, Address(end_from, qword_count, Address::times_8, - 0));
1.37 + __ movq(Address(end_to, qword_count, Address::times_8, - 0), to);
1.38 + }
1.39 __ BIND(L_copy_32_bytes);
1.40 __ addptr(qword_count, 4);
1.41 __ jcc(Assembler::lessEqual, L_loop);
1.42 @@ -1301,14 +1310,22 @@
1.43 Label L_loop;
1.44 __ align(16);
1.45 __ BIND(L_loop);
1.46 - __ movq(to, Address(from, qword_count, Address::times_8, 24));
1.47 - __ movq(Address(dest, qword_count, Address::times_8, 24), to);
1.48 - __ movq(to, Address(from, qword_count, Address::times_8, 16));
1.49 - __ movq(Address(dest, qword_count, Address::times_8, 16), to);
1.50 - __ movq(to, Address(from, qword_count, Address::times_8, 8));
1.51 - __ movq(Address(dest, qword_count, Address::times_8, 8), to);
1.52 - __ movq(to, Address(from, qword_count, Address::times_8, 0));
1.53 - __ movq(Address(dest, qword_count, Address::times_8, 0), to);
1.54 + if(UseUnalignedLoadStores) {
1.55 + __ movdqu(xmm0, Address(from, qword_count, Address::times_8, 16));
1.56 + __ movdqu(Address(dest, qword_count, Address::times_8, 16), xmm0);
1.57 + __ movdqu(xmm1, Address(from, qword_count, Address::times_8, 0));
1.58 + __ movdqu(Address(dest, qword_count, Address::times_8, 0), xmm1);
1.59 +
1.60 + } else {
1.61 + __ movq(to, Address(from, qword_count, Address::times_8, 24));
1.62 + __ movq(Address(dest, qword_count, Address::times_8, 24), to);
1.63 + __ movq(to, Address(from, qword_count, Address::times_8, 16));
1.64 + __ movq(Address(dest, qword_count, Address::times_8, 16), to);
1.65 + __ movq(to, Address(from, qword_count, Address::times_8, 8));
1.66 + __ movq(Address(dest, qword_count, Address::times_8, 8), to);
1.67 + __ movq(to, Address(from, qword_count, Address::times_8, 0));
1.68 + __ movq(Address(dest, qword_count, Address::times_8, 0), to);
1.69 + }
1.70 __ BIND(L_copy_32_bytes);
1.71 __ subptr(qword_count, 4);
1.72 __ jcc(Assembler::greaterEqual, L_loop);
