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

runtime/vm/intermediate_language_ia32.cc

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"  // Needed here to get TARGET_ARCH_IA32.
 #if defined(TARGET_ARCH_IA32)
 
 #include "vm/intermediate_language.h"
 
 #include "lib/error.h"
@@ skipping 2183 matching lines @@
 
   if (value_cid == kMintCid) {
     __ movsd(result, FieldAddress(value, Mint::value_offset()));
   } else if (value_cid == kSmiCid) {
     __ SmiUntag(value);  // Untag input before conversion.
     __ movd(result, value);
     __ pmovsxdq(result, result);
     __ 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);
     __ CompareClassId(value, kMintCid, temp);
     __ j(NOT_EQUAL, deopt);
     __ movsd(result, FieldAddress(value, Mint::value_offset()));
     __ jmp(&done);
     __ Bind(&is_smi);
     __ movl(temp, value);
     __ SmiUntag(temp);
@@ skipping 158 matching lines @@
       __ Bind(&overflow);
       __ addl(ESP, Immediate(2 * kWordSize));
       __ jmp(deopt);
       __ Bind(&done);
       break;
     }
     default: UNREACHABLE();
   }
 }
 
+
+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 __
 
 #endif  // defined TARGET_ARCH_X64