Unbreak non-SSE2 ia32 platforms.

src/ia32/lithium-codegen-ia32.cc

 // Copyright 2012 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 4568 matching lines @@
     } else {
       __ push(reg);
       __ fild_s(Operand(esp, 0));
       __ pop(reg);
     }
   } else {
     if (CpuFeatures::IsSupported(SSE2)) {
       CpuFeatures::Scope feature_scope(SSE2);
       __ LoadUint32(xmm0, reg, xmm1);
     } else {
-      UNREACHABLE();
+      // There's no fild variant for unsigned values, so zero-extend to a 64-bit
+      // int manually.
+      __ push(Immediate(0));
+      __ push(reg);
+      __ fild_d(Operand(esp, 0));
+      __ pop(reg);
+      __ pop(reg);
     }
   }
 
   if (FLAG_inline_new) {
     __ AllocateHeapNumber(reg, tmp, no_reg, &slow);
     __ jmp(&done, Label::kNear);
   }
 
   // Slow case: Call the runtime system to do the number allocation.
   __ bind(&slow);
@@ skipping 31 matching lines @@
    public:
     DeferredNumberTagD(LCodeGen* codegen, LNumberTagD* instr)
         : LDeferredCode(codegen), instr_(instr) { }
     virtual void Generate() { codegen()->DoDeferredNumberTagD(instr_); }
     virtual LInstruction* instr() { return instr_; }
    private:
     LNumberTagD* instr_;
   };
 
   Register reg = ToRegister(instr->result());
-  Register tmp = ToRegister(instr->temp());
 
   DeferredNumberTagD* deferred = new(zone()) DeferredNumberTagD(this, instr);
   if (FLAG_inline_new) {
+    Register tmp = ToRegister(instr->temp());
     __ AllocateHeapNumber(reg, tmp, no_reg, deferred->entry());
   } else {
     __ jmp(deferred->entry());
   }
   __ bind(deferred->exit());
   if (CpuFeatures::IsSupported(SSE2)) {
     CpuFeatures::Scope scope(SSE2);
     XMMRegister input_reg = ToDoubleRegister(instr->value());
     __ movdbl(FieldOperand(reg, HeapNumber::kValueOffset), input_reg);
   } else {
@@ skipping 1320 matching lines @@
                               FixedArray::kHeaderSize - kPointerSize));
   __ bind(&done);
 }
 
 
 #undef __
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_IA32