fixup! [Sema] built-in args type checking using hasSameUnqualifiedType

Author: actinks

clang/docs/ReleaseNotes.rst

@@ -669,6 +669,7 @@ Bug Fixes in This Version
   base classes. (GH139452)
 - Fixed an assertion failure in serialization of constexpr structs containing unions. (#GH140130)
 - Fixed duplicate entries in TableGen that caused the wrong attribute to be selected. (GH#140701)
+- Fixed type mismatch error caused by const structure pointer dereference when builtins parameter is used. (#GH141397)
 
 Bug Fixes to Compiler Builtins
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

clang/test/Sema/builtins-elementwise-math.c

@@ -3,6 +3,7 @@
 typedef double double2 __attribute__((ext_vector_type(2)));
 typedef double double4 __attribute__((ext_vector_type(4)));
 typedef float float2 __attribute__((ext_vector_type(2)));
+typedef float float3 __attribute__((ext_vector_type(3)));
 typedef float float4 __attribute__((ext_vector_type(4)));
 
 typedef int int2 __attribute__((ext_vector_type(2)));
@@ -1202,3 +1203,12 @@ void test_builtin_elementwise_fma(int i32, int2 v2i32, short i16,
   c3 = __builtin_elementwise_fma(f32, f32, c3);
   // expected-error@-1 {{3rd argument must be a scalar or vector of floating-point types (was '_Complex float')}}
 }
+
+typedef struct {
+  float3 b;
+} struct_float3;
+// This example uncovered a bug #141397
+float3 foo(float3 a,const struct_float3* hi) {
+  float3 b = __builtin_elementwise_max((float3)(0.0f), a);
+  return __builtin_elementwise_pow(b, hi->b.yyy);
+}