[Atomics] Make Atomics.compareExchange a builtin using TF

src/compiler/instruction-scheduler.cc

Index: src/compiler/instruction-scheduler.cc
diff --git a/src/compiler/instruction-scheduler.cc b/src/compiler/instruction-scheduler.cc
index 8693cb729f0629a29b4117bb10b5bfb751fb23a3..92cce0d311a977ae75e0ca4b067353d32232e20f 100644
--- a/src/compiler/instruction-scheduler.cc
+++ b/src/compiler/instruction-scheduler.cc
@@ -331,6 +331,11 @@ int InstructionScheduler::GetInstructionFlags(const Instruction* instr) const {
     case kAtomicExchangeInt16:
     case kAtomicExchangeUint16:
     case kAtomicExchangeWord32:
+    case kAtomicCompareExchangeInt8:
+    case kAtomicCompareExchangeUint8:
+    case kAtomicCompareExchangeInt16:
+    case kAtomicCompareExchangeUint16:
+    case kAtomicCompareExchangeWord32:
       return kIsLoadOperation | kHasSideEffect;
 
 #define CASE(Name) case k##Name: