Mercurial > hg > truffle
diff src/cpu/x86/vm/stubGenerator_x86_32.cpp @ 7475:e2e6bf86682c
8005544: Use 256bit YMM registers in arraycopy stubs on x86
Summary: Use YMM registers in arraycopy and array_fill stubs.
Reviewed-by: roland, twisti
author | kvn |
---|---|
date | Thu, 03 Jan 2013 16:30:47 -0800 |
parents | 2c7f594145dc |
children | 989155e2d07a e961c11b85fe |
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--- a/src/cpu/x86/vm/stubGenerator_x86_32.cpp Thu Jan 03 15:09:55 2013 -0800 +++ b/src/cpu/x86/vm/stubGenerator_x86_32.cpp Thu Jan 03 16:30:47 2013 -0800 @@ -796,16 +796,22 @@ __ align(OptoLoopAlignment); __ BIND(L_copy_64_bytes_loop); - if(UseUnalignedLoadStores) { - __ movdqu(xmm0, Address(from, 0)); - __ movdqu(Address(from, to_from, Address::times_1, 0), xmm0); - __ movdqu(xmm1, Address(from, 16)); - __ movdqu(Address(from, to_from, Address::times_1, 16), xmm1); - __ movdqu(xmm2, Address(from, 32)); - __ movdqu(Address(from, to_from, Address::times_1, 32), xmm2); - __ movdqu(xmm3, Address(from, 48)); - __ movdqu(Address(from, to_from, Address::times_1, 48), xmm3); - + if (UseUnalignedLoadStores) { + 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 { + __ movdqu(xmm0, Address(from, 0)); + __ movdqu(Address(from, to_from, Address::times_1, 0), xmm0); + __ movdqu(xmm1, Address(from, 16)); + __ movdqu(Address(from, to_from, Address::times_1, 16), xmm1); + __ movdqu(xmm2, Address(from, 32)); + __ movdqu(Address(from, to_from, Address::times_1, 32), xmm2); + __ movdqu(xmm3, Address(from, 48)); + __ movdqu(Address(from, to_from, Address::times_1, 48), xmm3); + } } else { __ movq(xmm0, Address(from, 0)); __ movq(Address(from, to_from, Address::times_1, 0), xmm0);