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Unified Diff: runtime/vm/assembler_ia32.cc

Issue 14122002: Use rep_movsb for copying one-byte strings in substring intrinsic. (Closed) Base URL: http://dart.googlecode.com/svn/branches/bleeding_edge/dart/
Patch Set: Created 7 years, 8 months ago
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Index: runtime/vm/assembler_ia32.cc
===================================================================
--- runtime/vm/assembler_ia32.cc (revision 21290)
+++ runtime/vm/assembler_ia32.cc (working copy)
@@ -330,6 +330,13 @@
}
+void Assembler::rep_movsb() {
+ AssemblerBuffer::EnsureCapacity ensured(&buffer_);
+ EmitUint8(0xF3);
+ EmitUint8(0xA4);
+}
+
+
void Assembler::movss(XmmRegister dst, const Address& src) {
AssemblerBuffer::EnsureCapacity ensured(&buffer_);
EmitUint8(0xF3);
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