[wasm] Int64Lowering of Int64Add on ia32 and arm.

test/cctest/test-disasm-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 78 matching lines @@
   __ nop();
   __ add(edi, Operand(ebp, ecx, times_4, 0));
   __ add(edi, Operand(ebp, ecx, times_4, 12));
   __ add(edi, Operand(ebp, ecx, times_4, -8));
   __ add(edi, Operand(ebp, ecx, times_4, -3999));
   __ add(Operand(ebp, ecx, times_4, 12), Immediate(12));
 
   __ nop();
   __ add(ebx, Immediate(12));
   __ nop();
+  __ adc(edx, Operand(ebx));
   __ adc(ecx, 12);
   __ adc(ecx, 1000);
   __ nop();
   __ and_(edx, 3);
   __ and_(edx, Operand(esp, 4));
   __ cmp(edx, 3);
   __ cmp(edx, Operand(esp, 4));
   __ cmp(Operand(ebp, ecx, times_4, 0), Immediate(1000));
   Handle<FixedArray> foo2 = isolate->factory()->NewFixedArray(10, TENURED);
   __ cmp(ebx, foo2);
@@ skipping 575 matching lines @@
 #ifdef OBJECT_PRINT
   OFStream os(stdout);
   code->Print(os);
   byte* begin = code->instruction_start();
   byte* end = begin + code->instruction_size();
   disasm::Disassembler::Disassemble(stdout, begin, end);
 #endif
 }
 
 #undef __