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src/cpu/x86/vm/stubGenerator_x86_32.cpp
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@@ -164,10 +164,17 @@
// save rdi, rsi, & rbx, according to C calling conventions
__ movptr(saved_rdi, rdi);
__ movptr(saved_rsi, rsi);
__ movptr(saved_rbx, rbx);
+
+ // provide initial value for required masks
+ if (UseAVX > 2) {
+ __ movl(rbx, 0xffff);
+ __ kmovdl(k1, rbx);
+ }
+
// save and initialize %mxcsr
if (sse_save) {
Label skip_ldmx;
__ stmxcsr(mxcsr_save);
__ movl(rax, mxcsr_save);
@@ -792,11 +799,14 @@
__ jmpb(L_copy_64_bytes);
__ align(OptoLoopAlignment);
__ BIND(L_copy_64_bytes_loop);
if (UseUnalignedLoadStores) {
- if (UseAVX >= 2) {
+ if (UseAVX > 2) {
+ __ evmovdqu(xmm0, Address(from, 0), Assembler::AVX_512bit);
+ __ evmovdqu(Address(from, to_from, Address::times_1, 0), xmm0, Assembler::AVX_512bit);
+ } else if (UseAVX == 2) {
__ vmovdqu(xmm0, Address(from, 0));
__ vmovdqu(Address(from, to_from, Address::times_1, 0), xmm0);
__ vmovdqu(xmm1, Address(from, 32));
__ vmovdqu(Address(from, to_from, Address::times_1, 32), xmm1);
} else {
@@ -831,11 +841,11 @@
__ addl(from, 64);
__ BIND(L_copy_64_bytes);
__ subl(qword_count, 8);
__ jcc(Assembler::greaterEqual, L_copy_64_bytes_loop);
- if (UseUnalignedLoadStores && (UseAVX >= 2)) {
+ if (UseUnalignedLoadStores && (UseAVX == 2)) {
// clean upper bits of YMM registers
__ vzeroupper();
}
__ addl(qword_count, 8);
__ jccb(Assembler::zero, L_exit);
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