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

test/cctest/test-assembler-x87.cc

Index: test/cctest/test-assembler-x87.cc
diff --git a/test/cctest/test-assembler-x87.cc b/test/cctest/test-assembler-x87.cc
index 2655e3447ddad7e7623e86cef2dba2146b85836e..3649b5bf88ae1b7d3370f895c4adebcdb985cae1 100644
--- a/test/cctest/test-assembler-x87.cc
+++ b/test/cctest/test-assembler-x87.cc
@@ -416,15 +416,15 @@ TEST(Regress621926) {
   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);