[turbofan] ARM: Reduce out-of-line NaN code size

src/arm/disasm-arm.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 // A Disassembler object is used to disassemble a block of code instruction by
 // instruction. The default implementation of the NameConverter object can be
 // overriden to modify register names or to do symbol lookup on addresses.
 //
 // The example below will disassemble a block of code and print it to stdout.
 //
@@ skipping 1386 matching lines @@
       } else if (((instr->Opc2Value() == 0x1)) && (instr->Opc3Value() == 0x3)) {
         if (instr->SzValue() == 0x1) {
           Format(instr, "vsqrt'cond.f64 'Dd, 'Dm");
         } else {
           Format(instr, "vsqrt'cond.f32 'Sd, 'Sm");
         }
       } else if (instr->Opc3Value() == 0x0) {
         if (instr->SzValue() == 0x1) {
           Format(instr, "vmov'cond.f64 'Dd, 'd");
         } else {
-          Unknown(instr);  // Not used by V8.
+          Format(instr, "vmov'cond.f32 'Sd, 'd");
         }
       } else if (((instr->Opc2Value() == 0x6)) && instr->Opc3Value() == 0x3) {
         // vrintz - round towards zero (truncate)
         if (instr->SzValue() == 0x1) {
           Format(instr, "vrintz'cond.f64.f64 'Dd, 'Dm");
         } else {
           Format(instr, "vrintz'cond.f32.f32 'Sd, 'Sm");
         }
       } else {
         Unknown(instr);  // Not used by V8.
@@ skipping 590 matching lines @@
     v8::internal::PrintF(
         f, "%p    %08x      %s\n",
         prev_pc, *reinterpret_cast<int32_t*>(prev_pc), buffer.start());
   }
 }
 
 
 }  // namespace disasm
 
 #endif  // V8_TARGET_ARCH_ARM