diff --git a/clang/lib/Sema/SemaChecking.cpp b/clang/lib/Sema/SemaChecking.cpp
--- a/clang/lib/Sema/SemaChecking.cpp
+++ b/clang/lib/Sema/SemaChecking.cpp
@@ -2697,10 +2697,29 @@
 
   case Builtin::BI__builtin_elementwise_min:
   case Builtin::BI__builtin_elementwise_max:
-  case Builtin::BI__builtin_elementwise_bitreverse:
     if (SemaBuiltinElementwiseMath(TheCall))
       return ExprError();
     break;
+
+  case Builtin::BI__builtin_elementwise_bitreverse: {
+    if (PrepareBuiltinElementwiseMathOneArgCall(TheCall))
+      return ExprError();
+
+    const Expr *Arg = TheCall->getArg(0);
+    QualType ArgTy = Arg->getType();
+    QualType EltTy = ArgTy;
+
+    if (auto *VecTy = EltTy->getAs<VectorType>())
+      EltTy = VecTy->getElementType();
+
+    if (!EltTy->isIntegerType()) {
+      Diag(Arg->getBeginLoc(), diag::err_builtin_invalid_arg_type)
+          << 1 << /* integer ty */ 6 << ArgTy;
+      return ExprError();
+    }
+    break;
+  }
+
   case Builtin::BI__builtin_elementwise_copysign: {
     if (checkArgCount(*this, TheCall, 2))
       return ExprError();
diff --git a/clang/test/Sema/builtins-elementwise-math.c b/clang/test/Sema/builtins-elementwise-math.c
--- a/clang/test/Sema/builtins-elementwise-math.c
+++ b/clang/test/Sema/builtins-elementwise-math.c
@@ -278,13 +278,13 @@
   // expected-error@-1 {{too few arguments to function call, expected 1, have 0}}
 
   i = __builtin_elementwise_bitreverse(f);
-  // expected-error@-1 {{1st argument must be a integer type (was 'float')}}
-
+  // expected-error@-1 {{1st argument must be a vector of integers (was 'float')}}
+  
   i = __builtin_elementwise_bitreverse(f, f);
   // expected-error@-1 {{too many arguments to function call, expected 1, have 2}}
 
   u = __builtin_elementwise_bitreverse(d);
-  // expected-error@-1 {{1st argument must be a integer type (was 'double')}}
+  // expected-error@-1 {{1st argument must be a vector of integers (was 'double')}}
 }
 
 void test_builtin_elementwise_ceil(int i, float f, double d, float4 v, int3 iv, unsigned u, unsigned4 uv) {