[wasm-simd][ia32] Fix i64x2.eq

Operand 1 is not always a register (when AVX is supported).

Bug: chromium:1182571,v8:11215
Change-Id: I75740b4900c4d8b4a10478780d93c995836faeb2
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/2724393Reviewed-by: Deepti Gandluri <gdeepti@chromium.org>
Commit-Queue: Zhi An Ng <zhin@chromium.org>
Cr-Commit-Position: refs/heads/master@{#73144}

src/compiler/backend/ia32/code-generator-ia32.cc

@@ -2210,7 +2210,7 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
     }
     case kIA32I64x2Eq: {
       __ Pcmpeqq(i.OutputSimd128Register(), i.InputSimd128Register(0),
-                 i.InputSimd128Register(1));
+                 i.InputOperand(1));
       break;
     }
     case kIA32I64x2Ne: {