================
@@ -0,0 +1,27 @@
+
+// RUN: %clang_cc1 -finclude-default-header -triple 
dxil-pc-shadermodel6.6-library %s -fnative-half-type -emit-llvm 
-disable-llvm-passes -verify -verify-ignore-unexpected
+
+float test_too_few_arg() {
+  return __builtin_hlsl_elementwise_rsqrt();
+  // expected-error@-1 {{too few arguments to function call, expected 1, have 
0}}
+}
+
+float2 test_too_many_arg(float2 p0) {
+  return __builtin_hlsl_elementwise_rsqrt(p0, p0);
+  // expected-error@-1 {{too many arguments to function call, expected 1, have 
2}}
+}
+
+float builtin_bool_to_float_type_promotion(bool p1) {
+  return __builtin_hlsl_elementwise_rsqrt(p1);
+  // expected-error@-1 {{1st argument must be a vector, integer or floating 
point type (was 'bool')}}
----------------
damyanp wrote:

"integer" - is this true?  I thought it only worked with things that were 
float-like.

https://github.com/llvm/llvm-project/pull/84820
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