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diff src/share/vm/runtime/globals.hpp @ 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 d825a8a2bd39
children d6fe2e4959d6
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line diff
--- a/src/share/vm/runtime/globals.hpp	Wed Mar 19 15:14:36 2008 -0700
+++ b/src/share/vm/runtime/globals.hpp	Wed Mar 19 15:33:25 2008 -0700
@@ -949,6 +949,12 @@
   product(bool, UseXmmRegToRegMoveAll, false,                               \
           "Copy all XMM register bits when moving value between registers") \
                                                                             \
+  product(bool, UseXmmI2D, false,                                           \
+          "Use SSE2 CVTDQ2PD instruction to convert Integer to Double")     \
+                                                                            \
+  product(bool, UseXmmI2F, false,                                           \
+          "Use SSE2 CVTDQ2PS instruction to convert Integer to Float")      \
+                                                                            \
   product(intx, FieldsAllocationStyle, 1,                                   \
           "0 - type based with oops first, 1 - with oops last")             \
                                                                             \