Mercurial > hg > truffle
diff src/cpu/x86/vm/assembler_x86_64.cpp @ 71:3d62cb85208d
6662967: Optimize I2D conversion on new x86
Summary: Use CVTDQ2PS and CVTDQ2PD for integer values conversions to float and double values on new AMD cpu.
Reviewed-by: sgoldman, never
| author | kvn |
|---|---|
| date | Wed, 19 Mar 2008 15:33:25 -0700 |
| parents | a61af66fc99e |
| children | d6fe2e4959d6 |
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--- a/src/cpu/x86/vm/assembler_x86_64.cpp Wed Mar 19 15:14:36 2008 -0700 +++ b/src/cpu/x86/vm/assembler_x86_64.cpp Wed Mar 19 15:33:25 2008 -0700 @@ -3372,6 +3372,21 @@ emit_byte(0xC0 | encode); } +void Assembler::cvtdq2pd(XMMRegister dst, XMMRegister src) { + emit_byte(0xF3); + int encode = prefix_and_encode(dst->encoding(), src->encoding()); + emit_byte(0x0F); + emit_byte(0xE6); + emit_byte(0xC0 | encode); +} + +void Assembler::cvtdq2ps(XMMRegister dst, XMMRegister src) { + int encode = prefix_and_encode(dst->encoding(), src->encoding()); + emit_byte(0x0F); + emit_byte(0x5B); + emit_byte(0xC0 | encode); +} + void Assembler::cvtsd2ss(XMMRegister dst, XMMRegister src) { emit_byte(0xF2); int encode = prefix_and_encode(dst->encoding(), src->encoding());