add >= hlsl202y primary template definition, add hlsl202y sema tests

Author: kmpeng

clang/lib/Headers/hlsl/hlsl_intrinsics.h

@@ -283,6 +283,10 @@ const inline float length(__detail::HLSL_FIXED_VECTOR<float, N> X) {
 /// This function returns a lighting coefficient vector (ambient, diffuse,
 /// specular, 1).
 
+#if __HLSL_VERSION >= __HLSL_202y
+template <typename T> const inline vector<T, 4> lit(T, T, T) = delete;
+#endif
+
 template <>
 _HLSL_16BIT_AVAILABILITY(shadermodel, 6.2)
 const inline vector<half, 4> lit<half>(half NDotL, half NDotH, half M) {

clang/test/SemaHLSL/BuiltIns/lit-errors-hlsl202y.hlsl

@@ -0,0 +1,37 @@
+// RUN: %clang_cc1 -std=hlsl202y -finclude-default-header -x hlsl -triple dxil-pc-shadermodel6.6-library %s -fnative-half-type -emit-llvm-only -disable-llvm-passes -verify
+
+double4 test_double_inputs(double p0, double p1, double p2) {
+  return lit(p0, p1, p2);
+  // expected-error@-1 {{call to deleted function 'lit'}}
+  // expected-note@hlsl/hlsl_intrinsics.h:* {{candidate function [with T = double] has been explicitly deleted}}
+}
+
+int4 test_int_inputs(int p0, int p1, int p2) {
+  return lit(p0, p1, p2);
+  // expected-error@-1 {{call to deleted function 'lit'}}
+  // expected-note@hlsl/hlsl_intrinsics.h:* {{candidate function [with T = int] has been explicitly deleted}}
+}
+
+uint4 test_uint_inputs(uint p0, uint p1, uint p2) {
+  return lit(p0, p1, p2);
+  // expected-error@-1 {{call to deleted function 'lit'}}
+  // expected-note@hlsl/hlsl_intrinsics.h:* {{candidate function [with T = unsigned int] has been explicitly deleted}}
+}
+
+int64_t4 test_int64_t_inputs(int64_t p0, int64_t p1, int64_t p2) {
+  return lit(p0, p1, p2);
+  // expected-error@-1 {{call to deleted function 'lit'}}
+  // expected-note@hlsl/hlsl_intrinsics.h:* {{candidate function [with T = long] has been explicitly deleted}}
+}
+
+uint64_t4 test_uint64_t_inputs(uint64_t p0, uint64_t p1, uint64_t p2) {
+  return lit(p0, p1, p2);
+  // expected-error@-1 {{call to deleted function 'lit'}}
+  // expected-note@hlsl/hlsl_intrinsics.h:* {{candidate function [with T = unsigned long] has been explicitly deleted}}
+}
+
+bool4 test_bool_inputs(bool p0, bool p1, bool p2) {
+  return lit(p0, p1, p2);
+  // expected-error@-1 {{call to deleted function 'lit'}}
+  // expected-note@hlsl/hlsl_intrinsics.h:* {{candidate function [with T = bool] has been explicitly deleted}}
+}