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diff src/cpu/x86/vm/assembler_x86_32.cpp @ 71:3d62cb85208d

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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 deadee49286e
line wrap: on
line diff
--- a/src/cpu/x86/vm/assembler_x86_32.cpp	Wed Mar 19 15:14:36 2008 -0700
+++ b/src/cpu/x86/vm/assembler_x86_32.cpp	Wed Mar 19 15:33:25 2008 -0700
@@ -2672,6 +2672,22 @@
   emit_sse_operand(dst, src);
 }
 
+void Assembler::cvtdq2pd(XMMRegister dst, XMMRegister src) {
+  assert(VM_Version::supports_sse2(), "");
+
+  emit_byte(0xF3);
+  emit_byte(0x0F);
+  emit_byte(0xE6);
+  emit_sse_operand(dst, src);
+}
+
+void Assembler::cvtdq2ps(XMMRegister dst, XMMRegister src) {
+  assert(VM_Version::supports_sse2(), "");
+
+  emit_byte(0x0F);
+  emit_byte(0x5B);
+  emit_sse_operand(dst, src);
+}
 
 emit_sse_instruction(andps,  sse,  0,    0x54, XMMRegister, XMMRegister);
 emit_sse_instruction(andpd,  sse2, 0x66, 0x54, XMMRegister, XMMRegister);