[Atomics] Make Atomics.exchange a builtin using TF

src/compiler/mips64/code-generator-mips64.cc

Index: src/compiler/mips64/code-generator-mips64.cc
diff --git a/src/compiler/mips64/code-generator-mips64.cc b/src/compiler/mips64/code-generator-mips64.cc
index 3ab85e03b77c3177ae565014b793fb3f2f16cf66..9808608ea4d6d943f4f4a2800be94e3172910ac4 100644
--- a/src/compiler/mips64/code-generator-mips64.cc
+++ b/src/compiler/mips64/code-generator-mips64.cc
@@ -1916,6 +1916,13 @@ CodeGenerator::CodeGenResult CodeGenerator::AssembleArchInstruction(
     case kAtomicStoreWord32:
       ASSEMBLE_ATOMIC_STORE_INTEGER(sw);
       break;
+    case kAtomicExchangeInt8:
+    case kAtomicExchangeUint8:
+    case kAtomicExchangeInt16:
+    case kAtomicExchangeUint16:
+    case kAtomicExchangeWord32:
+      UNREACHABLE();
+      break;
     case kMips64AssertEqual:
       __ Assert(eq, static_cast<BailoutReason>(i.InputOperand(2).immediate()),
                 i.InputRegister(0), Operand(i.InputRegister(1)));