Mercurial > hg > truffle
diff src/cpu/x86/vm/vm_version_x86.cpp @ 681:fbde8ec322d0
6761600: Use sse 4.2 in intrinsics
Summary: Use SSE 4.2 in intrinsics for String.{compareTo/equals/indexOf} and Arrays.equals.
Reviewed-by: kvn, never, jrose
author | cfang |
---|---|
date | Tue, 31 Mar 2009 14:07:08 -0700 |
parents | c771b7f43bbf |
children | 93c14e5562c4 |
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--- a/src/cpu/x86/vm/vm_version_x86.cpp Tue Mar 31 10:02:01 2009 -0700 +++ b/src/cpu/x86/vm/vm_version_x86.cpp Tue Mar 31 14:07:08 2009 -0700 @@ -408,6 +408,11 @@ UseUnalignedLoadStores = true; // use movdqu on newest Intel cpus } } + if( supports_sse4_2() && UseSSE >= 4 ) { + if( FLAG_IS_DEFAULT(UseSSE42Intrinsics)) { + UseSSE42Intrinsics = true; + } + } } }