[K/N] Don't pass -target-cpu to clang

It is not supported by bitcode embedding on Apple platforms.
Instead, we set it in function attributes directly as Clang does.

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/llvm/LlvmAttributes.kt

@@ -22,6 +22,7 @@ internal fun addLlvmFunctionWithDefaultAttributes(
         type: LLVMTypeRef
 ): LLVMValueRef = LLVMAddFunction(module, name, type)!!.also {
     addDefaultLlvmFunctionAttributes(context, it)
+    addTargetCpuAndFeaturesAttributes(context, it)
 }
 
 /**
@@ -35,6 +36,18 @@ private fun addDefaultLlvmFunctionAttributes(context: Context, llvmFunction: LLV
     }
 }
 
+/**
+ * Set target cpu and its features to make LLVM generate correct machine code.
+ */
+private fun addTargetCpuAndFeaturesAttributes(context: Context, llvmFunction: LLVMValueRef) {
+    context.config.platform.targetCpu?.let {
+        LLVMAddTargetDependentFunctionAttr(llvmFunction, "target-cpu", it)
+    }
+    context.config.platform.targetCpuFeatures?.let {
+        LLVMAddTargetDependentFunctionAttr(llvmFunction, "target-features", it)
+    }
+}
+
 internal fun addLlvmAttributesForKotlinFunction(context: Context, irFunction: IrFunction, llvmFunction: LLVMValueRef) {
     if (irFunction.returnType.isNothing()) {
         setFunctionNoReturn(llvmFunction)