Revert of [ia32] Fixes a bug in cmpw.

test/cctest/test-assembler-ia32.cc

Index: test/cctest/test-assembler-ia32.cc
diff --git a/test/cctest/test-assembler-ia32.cc b/test/cctest/test-assembler-ia32.cc
index 0557715bedceed42a3fc13717ce36a2b1bafad6e..12733c2cdda3ddf7296f71739c2334ed83df351a 100644
--- a/test/cctest/test-assembler-ia32.cc
+++ b/test/cctest/test-assembler-ia32.cc
@@ -1497,37 +1497,4 @@
   }
 }
 
-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;
-
-  Label fail;
-  __ mov(ebx, Immediate(reinterpret_cast<intptr_t>(&a)));
-  __ mov(eax, Immediate(41));
-  __ cmpw(eax, Operand(ebx));
-  __ j(above_equal, &fail);
-  __ cmpw(Operand(ebx), eax);
-  __ j(below_equal, &fail);
-  __ mov(eax, 1);
-  __ ret(0);
-  __ bind(&fail);
-  __ mov(eax, 0);
-  __ ret(0);
-
-  CodeDesc desc;
-  assm.GetCode(&desc);
-  Handle<Code> code = isolate->factory()->NewCode(
-      desc, Code::ComputeFlags(Code::STUB), Handle<Code>());
-
-  F0 f = FUNCTION_CAST<F0>(code->entry());
-  CHECK_EQ(f(), 1);
-}
-
 #undef __