1 files changed, 1 insertions, 32 deletions

diff --git a/src/bun.js/bindings/JSBuffer.cpp b/src/bun.js/bindings/JSBuffer.cpp
index 08475735b..e420e24ef 100644
--- a/src/bun.js/bindings/JSBuffer.cpp
+++ b/src/bun.js/bindings/JSBuffer.cpp
@@ -1690,14 +1690,6 @@ JSC_DEFINE_HOST_FUNCTION(jsBufferConstructorFunction_compare, (JSGlobalObject *
     return jsBufferConstructorFunction_compareBody(lexicalGlobalObject, callFrame);
 }
 
-JSC_DEFINE_HOST_FUNCTION(jsBufferConstructorFunction_isBuffer, (JSGlobalObject * lexicalGlobalObject, CallFrame* callFrame))
-{
-    if (callFrame->argumentCount() < 1)
-        return JSC::JSValue::encode(JSC::jsBoolean(false));
-
-    return JSC::JSValue::encode(JSC::jsBoolean(JSBuffer__isBuffer(lexicalGlobalObject, JSC::JSValue::encode(callFrame->uncheckedArgument(0)))));
-}
-
 JSC_DEFINE_HOST_FUNCTION(jsBufferConstructorFunction_concat, (JSGlobalObject * lexicalGlobalObject, CallFrame* callFrame))
 {
     return jsBufferConstructorFunction_concatBody(lexicalGlobalObject, callFrame);
@@ -1706,24 +1698,6 @@ JSC_DEFINE_HOST_FUNCTION(jsBufferConstructorFunction_concat, (JSGlobalObject * l
 extern "C" JSC_DECLARE_JIT_OPERATION_WITHOUT_WTF_INTERNAL(jsBufferConstructorAllocWithoutTypeChecks, JSUint8Array*, (JSC::JSGlobalObject * lexicalGlobalObject, void* thisValue, int size));
 extern "C" JSC_DECLARE_JIT_OPERATION_WITHOUT_WTF_INTERNAL(jsBufferConstructorAllocUnsafeWithoutTypeChecks, JSUint8Array*, (JSC::JSGlobalObject * lexicalGlobalObject, void* thisValue, int size));
 extern "C" JSC_DECLARE_JIT_OPERATION_WITHOUT_WTF_INTERNAL(jsBufferConstructorAllocUnsafeSlowWithoutTypeChecks, JSUint8Array*, (JSC::JSGlobalObject * lexicalGlobalObject, void* thisValue, int size));
-extern "C" JSC_DECLARE_JIT_OPERATION_WITHOUT_WTF_INTERNAL(jsBufferConstructorIsBufferWithoutTypeChecks, JSValue, (JSC::JSGlobalObject * lexicalGlobalObject, void*, JSUint8Array* value));
-
-static bool isBufferWithCell(JSC::JSGlobalObject* lexicalGlobalObject, JSC::JSUint8Array* cell)
-{
-    auto& vm = lexicalGlobalObject->vm();
-    JSValue prototype = cell->getPrototype(vm, lexicalGlobalObject);
-    return prototype.inherits<JSBufferPrototype>();
-}
-
-JSC_DEFINE_JIT_OPERATION(jsBufferConstructorIsBufferWithoutTypeChecks, JSValue, (JSC::JSGlobalObject * lexicalGlobalObject, void* ctx, JSUint8Array* thisValue))
-{
-    VM& vm = JSC::getVM(lexicalGlobalObject);
-    IGNORE_WARNINGS_BEGIN("frame-address")
-    CallFrame* callFrame = DECLARE_CALL_FRAME(vm);
-    IGNORE_WARNINGS_END
-    JSC::JITOperationPrologueCallFrameTracer tracer(vm, callFrame);
-    return jsBoolean(isBufferWithCell(lexicalGlobalObject, thisValue));
-}
 
 JSC_DEFINE_JIT_OPERATION(jsBufferConstructorAllocWithoutTypeChecks, JSUint8Array*, (JSC::JSGlobalObject * lexicalGlobalObject, void* thisValue, int byteLength))
 {
@@ -1965,11 +1939,6 @@ static const JSC::DOMJIT::Signature DOMJITSignaturejsBufferConstructorAlloc(jsBu
     JSC::DOMJIT::Effect::forWriteKinds(JSC::DFG::AbstractHeapKind::Heap),
     JSC::SpecUint8Array, JSC::SpecInt32Only);
 
-static const JSC::DOMJIT::Signature DOMJITSignaturejsBufferConstructorIsBuffer(jsBufferConstructorIsBufferWithoutTypeChecks,
-    JSBufferConstructor::info(),
-    JSC::DOMJIT::Effect::forPure(),
-    JSC::SpecOther, JSC::SpecUint8Array);
-
 static const JSC::DOMJIT::Signature DOMJITSignaturejsBufferConstructorAllocUnsafe(jsBufferConstructorAllocUnsafeWithoutTypeChecks,
     JSBufferConstructor::info(),
     JSC::DOMJIT::Effect::forWriteKinds(JSC::DFG::AbstractHeapKind::Heap),
@@ -1991,7 +1960,7 @@ static const HashTableValue JSBufferConstructorTableValues[] = {
     { "compare"_s, static_cast<unsigned>(JSC::PropertyAttribute::Function), NoIntrinsic, { HashTableValue::NativeFunctionType, jsBufferConstructorFunction_compare, 2 } },
     { "concat"_s, static_cast<unsigned>(JSC::PropertyAttribute::Function), NoIntrinsic, { HashTableValue::NativeFunctionType, jsBufferConstructorFunction_concat, 2 } },
     { "from"_s, static_cast<unsigned>(JSC::PropertyAttribute::Builtin), NoIntrinsic, { HashTableValue::BuiltinGeneratorType, jsBufferConstructorFromCodeGenerator, 1 } },
-    { "isBuffer"_s, static_cast<unsigned>(JSC::PropertyAttribute::Function | JSC::PropertyAttribute::DOMJITFunction), NoIntrinsic, { HashTableValue::DOMJITFunctionType, jsBufferConstructorFunction_isBuffer, &DOMJITSignaturejsBufferConstructorIsBuffer } },
+    { "isBuffer"_s, static_cast<unsigned>(JSC::PropertyAttribute::Builtin), NoIntrinsic, { HashTableValue::BuiltinGeneratorType, jsBufferConstructorIsBufferCodeGenerator, 1 } },
     { "toBuffer"_s, static_cast<unsigned>(JSC::PropertyAttribute::Function), NoIntrinsic, { HashTableValue::NativeFunctionType, jsBufferConstructorFunction_toBuffer, 1 } },
     { "isEncoding"_s, static_cast<unsigned>(JSC::PropertyAttribute::Function), NoIntrinsic, { HashTableValue::NativeFunctionType, jsBufferConstructorFunction_isEncoding, 1 } },
 };