Index: include/clang/Basic/BuiltinsARM.def
===================================================================
--- include/clang/Basic/BuiltinsARM.def
+++ include/clang/Basic/BuiltinsARM.def
@@ -65,4 +65,7 @@
 BUILTIN(__builtin_arm_dmb, "vUi", "nc")
 BUILTIN(__builtin_arm_dsb, "vUi", "nc")
 
+BUILTIN(__emit, "vUiC", "")
+BUILTIN(__yield, "v", "")
+
 #undef BUILTIN
Index: lib/CodeGen/CGBuiltin.cpp
===================================================================
--- lib/CodeGen/CGBuiltin.cpp
+++ lib/CodeGen/CGBuiltin.cpp
@@ -20,7 +20,9 @@
 #include "clang/Basic/TargetBuiltins.h"
 #include "clang/Basic/TargetInfo.h"
 #include "clang/CodeGen/CGFunctionInfo.h"
+#include "llvm/ADT/StringExtras.h"
 #include "llvm/IR/DataLayout.h"
+#include "llvm/IR/InlineAsm.h"
 #include "llvm/IR/Intrinsics.h"
 
 using namespace clang;
@@ -4326,6 +4328,30 @@
 
 Value *CodeGenFunction::EmitARMBuiltinExpr(unsigned BuiltinID,
                                            const CallExpr *E) {
+  if (BuiltinID == ARM::BI__emit) {
+    llvm::FunctionType *FTy =
+      llvm::FunctionType::get(VoidTy, /*Variadic=*/false);
+
+    llvm::APSInt Value;
+    if (!E->getArg(0)->EvaluateAsInt(Value, CGM.getContext()))
+      report_fatal_error("constant value required!");
+    uint64_t ZExtValue = Builder.getInt(Value)->getZExtValue();
+
+    llvm::InlineAsm *Emit =
+      llvm::InlineAsm::get(FTy, ".long 0x" + llvm::utohexstr(ZExtValue),
+                           "", /*SideEffects=*/true);
+    return Builder.CreateCall(Emit);
+  }
+
+  if (BuiltinID == ARM::BI__yield) {
+    llvm::FunctionType *FTy =
+      llvm::FunctionType::get(VoidTy, /*Variadic=*/false);
+
+    llvm::InlineAsm *Yield =
+      llvm::InlineAsm::get(FTy, "yield", "", /*SideEffect=*/true);
+    return Builder.CreateCall(Yield);
+  }
+
   if (BuiltinID == ARM::BI__clear_cache) {
     assert(E->getNumArgs() == 2 && "__clear_cache takes 2 arguments");
     const FunctionDecl *FD = E->getDirectCallee();
Index: test/CodeGen/builtins-arm-microsoft.c
===================================================================
--- /dev/null
+++ test/CodeGen/builtins-arm-microsoft.c
@@ -0,0 +1,11 @@
+// RUN: %clang_cc1 -triple thumbv7-windows -emit-llvm -o - %s | FileCheck %s
+// REQUIRES: arm-registered-target
+
+void test_emit_intrinsic() {
+  __emit(0xdefe); // CHECK: call void asm sideeffect ".long 0xDEFE", ""()
+}
+
+void test_yield_intrinsic() {
+  __yield(); // CHECK: call void asm sideeffect "yield", ""()
+}
+