Generate shorter instruction forms for constant in ia32 gap resolver.

src/ia32/lithium-gap-resolver-ia32.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 287 matching lines @@
       // moves.
       Register tmp = EnsureTempRegister();
       Operand dst = cgen_->ToOperand(destination);
       __ mov(tmp, src);
       __ mov(dst, tmp);
     }
 
   } else if (source->IsConstantOperand()) {
     ASSERT(destination->IsRegister() || destination->IsStackSlot());
     Immediate src = cgen_->ToImmediate(source);
-    Operand dst = cgen_->ToOperand(destination);
-    __ mov(dst, src);
+    if (destination->IsRegister()) {
+      Register dst = cgen_->ToRegister(destination);
+      __ Set(dst, src);
+    } else {
+      Operand dst = cgen_->ToOperand(destination);
+      __ Set(dst, src);
+    }
 
   } else if (source->IsDoubleRegister()) {
     XMMRegister src = cgen_->ToDoubleRegister(source);
     if (destination->IsDoubleRegister()) {
       XMMRegister dst = cgen_->ToDoubleRegister(destination);
       __ movaps(dst, src);
     } else {
       ASSERT(destination->IsDoubleStackSlot());
       Operand dst = cgen_->ToOperand(destination);
       __ movdbl(dst, src);
@@ skipping 146 matching lines @@
   } else if (destination->IsRegister()) {
     source_uses_[destination->index()] = CountSourceUses(destination);
   }
 }
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32