Add fast 64-bit bitwise negation to the IA32 optimizing compiler.

runtime/vm/intermediate_language_ia32.cc

Index: runtime/vm/intermediate_language_ia32.cc
===================================================================
--- runtime/vm/intermediate_language_ia32.cc	(revision 13214)
+++ runtime/vm/intermediate_language_ia32.cc	(working copy)
@@ -2201,7 +2201,7 @@
     __ SmiTag(value);  // Restore input register.
   } else {
     Register temp = locs()->temp(0).reg();
-    Label* deopt = compiler->AddDeoptStub(deopt_id_, kDeoptBinaryDoubleOp);
+    Label* deopt = compiler->AddDeoptStub(deopt_id_, kDeoptUnboxInteger);
     Label is_smi, done;
     __ testl(value, Immediate(kSmiTagMask));
     __ j(ZERO, &is_smi);
@@ -2380,6 +2380,27 @@
   }
 }
 
+
+LocationSummary* UnboxedMintUnaryOpInstr::MakeLocationSummary() const {
+  const intptr_t kNumInputs = 1;
+  const intptr_t kNumTemps = 0;
+  LocationSummary* summary =
+      new LocationSummary(kNumInputs, kNumTemps, LocationSummary::kNoCall);
+  summary->set_in(0, Location::RequiresXmmRegister());
+  summary->set_out(Location::SameAsFirstInput());
+  return summary;
+}
+
+
+void UnboxedMintUnaryOpInstr::EmitNativeCode(FlowGraphCompiler* compiler) {
+  ASSERT(op_kind() == Token::kBIT_NOT);
+  XmmRegister value = locs()->in(0).xmm_reg();
+  ASSERT(value == locs()->out().xmm_reg());
+  __ pcmpeqq(XMM0, XMM0);  // Generate all 1's.
+  __ pxor(value, XMM0);
+}
+
+
 }  // namespace dart
 
 #undef __