Mercurial > hg > truffle
diff src/cpu/x86/vm/macroAssembler_x86.hpp @ 7477:038dd2875b94
8005419: Improve intrinsics code performance on x86 by using AVX2
Summary: use 256bit vpxor,vptest instructions in String.compareTo() and equals() intrinsics.
Reviewed-by: twisti
author | kvn |
---|---|
date | Tue, 08 Jan 2013 11:30:51 -0800 |
parents | 00af3a3a8df4 |
children | b30b3c2a0cf2 db9981fd3124 |
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--- a/src/cpu/x86/vm/macroAssembler_x86.hpp Mon Jan 07 14:08:28 2013 -0800 +++ b/src/cpu/x86/vm/macroAssembler_x86.hpp Tue Jan 08 11:30:51 2013 -0800 @@ -1011,6 +1011,10 @@ Assembler::vxorpd(dst, nds, src, vector256); } + // Simple version for AVX2 256bit vectors + void vpxor(XMMRegister dst, XMMRegister src) { Assembler::vpxor(dst, dst, src, true); } + void vpxor(XMMRegister dst, Address src) { Assembler::vpxor(dst, dst, src, true); } + // Move packed integer values from low 128 bit to hign 128 bit in 256 bit vector. void vinserti128h(XMMRegister dst, XMMRegister nds, XMMRegister src) { if (UseAVX > 1) // vinserti128h is available only in AVX2