Index: lib/Headers/arm_acle.h
===================================================================
--- lib/Headers/arm_acle.h
+++ lib/Headers/arm_acle.h
@@ -90,6 +90,11 @@
   __qsub(int32_t t, int32_t v) {
   return __builtin_arm_qsub(t, v);
 }
+
+static __inline__ int32_t __attribute__((always_inline, nodebug))
+__qdbl(int32_t t) {
+  return __builtin_arm_qadd(t, t);
+}
 #endif
 
 /* CRC32 intrinsics */
Index: test/CodeGen/arm_acle.c
===================================================================
--- test/CodeGen/arm_acle.c
+++ test/CodeGen/arm_acle.c
@@ -66,6 +66,15 @@
 int32_t test_qsub(int32_t a, int32_t b) {
   return __qsub(a, b);
 }
+
+extern int32_t f();
+// AArch32-LABEL: test_qdbl
+// AArch32: [[VAR:%[a-z0-9]+]] = {{.*}} call {{.*}} @f
+// AArch32-NOT: call {{.*}} @f
+// AArch32: call i32 @llvm.arm.qadd(i32 [[VAR]], i32 [[VAR]])
+int32_t test_qdbl() {
+  return __qdbl(f());
+}
 #endif
 
 /* CRC32 intrinsics */