X87: [ia32] Fixes a wrong use of Operand in a test.

test/cctest/test-assembler-x87.cc

 // Copyright 2011 the V8 project authors. All rights reserved.
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 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
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 //     * 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 398 matching lines @@
 
 TEST(Regress621926) {
   // Bug description:
   // The opcodes for cmpw r/m16, r16 and cmpw r16, r/m16 were swapped.
   // This was causing non-commutative comparisons to produce the wrong result.
   CcTest::InitializeVM();
   Isolate* isolate = reinterpret_cast<Isolate*>(CcTest::isolate());
   HandleScope scope(isolate);
   Assembler assm(isolate, nullptr, 0);
 
-  int16_t a = 42;
+  uint16_t a = 42;
 
   Label fail;
   __ push(ebx);
   __ mov(ebx, Immediate(reinterpret_cast<intptr_t>(&a)));
   __ mov(eax, Immediate(41));
-  __ cmpw(eax, Operand(ebx));
+  __ cmpw(eax, Operand(ebx, 0));
   __ j(above_equal, &fail);
-  __ cmpw(Operand(ebx), eax);
+  __ cmpw(Operand(ebx, 0), eax);
   __ j(below_equal, &fail);
   __ mov(eax, 1);
   __ pop(ebx);
   __ ret(0);
   __ bind(&fail);
   __ mov(eax, 0);
   __ pop(ebx);
   __ ret(0);
 
   CodeDesc desc;
   assm.GetCode(&desc);
   Handle<Code> code = isolate->factory()->NewCode(
       desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
 
 #ifdef OBJECT_PRINT
   OFStream os(stdout);
   code->Print(os);
 #endif
 
   F0 f = FUNCTION_CAST<F0>(code->entry());
   CHECK_EQ(f(), 1);
 }
 
 #undef __