[clang] [clang][Builtins] Parse clang extended vectors types. (PR #83584)

[Aaron Ballman via cfe-commits]

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@@ -0,0 +1,79 @@
+// RUN: clang-tblgen -I %p/../../../clang/include/ %s --gen-clang-builtins | FileCheck %s
+// RUN: not clang-tblgen -I %p/../../../clang/include/ %s --gen-clang-builtins -DERROR_EXPECTED_LANES 2>&1 | FileCheck %s --check-prefix=ERROR_EXPECTED_LANES
+// RUN: not clang-tblgen -I %p/../../../clang/include/ %s --gen-clang-builtins -DERROR_EXPECTED_COMMA 2>&1 | FileCheck %s --check-prefix=ERROR_EXPECTED_COMMA
+// RUN: not clang-tblgen -I %p/../../../clang/include/ %s --gen-clang-builtins -DERROR_EXPECTED_TYPE 2>&1 | FileCheck %s --check-prefix=ERROR_EXPECTED_TYPE
+
+include "clang/Basic/BuiltinsBase.td"
+
+def : Builtin {
+// CHECK: BUILTIN(__builtin_01, "E8idE4b", "")
+  let Prototype = "_ExtVector<8,int>(double, _ExtVector<4,        bool>)";
+  let Spellings = ["__builtin_01"];
+}
+
+def : Builtin {
+// CHECK: BUILTIN(__builtin_02, "E8UiE4s", "")
+  let Prototype = "_ExtVector<8,unsigned int>(_ExtVector<4, short>)";
+  let Spellings = ["__builtin_02"];
+}
+
+def : Builtin {
+// CHECK: BUILTIN(__builtin_03, "di", "")
+  let Prototype = "double(int)";
+  let Spellings = ["__builtin_03"];
+}
+
+def : Builtin {
+// CHECK: BUILTIN(__builtin_04, "diIUi", "")
+ let Prototype = "double(int, _Constant unsigned int)";
+  let Spellings = ["__builtin_04"];
+}
+
+def : Builtin {
+// CHECK: BUILTIN(__builtin_05, "v&v&", "")
+ let Prototype = "void&(void&)";
+  let Spellings = ["__builtin_05"];
+}
+
+def : Builtin {
+// CHECK: BUILTIN(__builtin_06, "v*v*cC*.", "")
+ let Prototype = "void*(void*, char const*, ...)";
+  let Spellings = ["__builtin_06"];
+}
+
+def : Builtin {
+// CHECK: BUILTIN(__builtin_07, "E8iE4dE4b.", "")
+  let Prototype = "_ExtVector<8, int>(_ExtVector<4,double>, _ExtVector<4, bool>, ...)";
+  let Spellings = ["__builtin_07"];
+}
+
+def : Builtin {
+// CHECK: BUILTIN(__builtin_08, "di*R", "")
+  let Prototype = "double(int * restrict)";
+  let Spellings = ["__builtin_08"];
+}
+
+#ifdef ERROR_EXPECTED_LANES
+def : Builtin {
+// ERROR_EXPECTED_LANES: :[[# @LINE + 1]]:7: error: Expected number of lanes after '_ExtVector<'
+  let Prototype = "_ExtVector<int>(double)";
+  let Spellings = ["__builtin_test_use_clang_extended_vectors"];
+}
+#endif
+
+#ifdef ERROR_EXPECTED_COMMA
+def : Builtin {
+// ERROR_EXPECTED_COMMA: :[[# @LINE + 1]]:7: error: Expected ',' after number of lanes in '_ExtVector<'
+  let Prototype = "_ExtVector<8 int>(double)";
+  let Spellings = ["__builtin_test_use_clang_extended_vectors"];
+}
+#endif
+
+#ifdef ERROR_EXPECTED_TYPE
+def : Builtin {
+// ERROR_EXPECTED_TYPE: :[[# @LINE + 1]]:7: error: Expected '>' after scalar type in '_ExtVector<N, type>'
+  let Prototype = "_ExtVector<8, int (double)";
+  let Spellings = ["__builtin_test_use_clang_extended_vectors"];
+}
+#endif
----------------
AaronBallman wrote:

Some other test cases to consider:

```
_ExtVector(8, int) // Parens rather than angle brackets
_EtxVector<8, int> // Typo
_ExtVector<> // Nothing given
```

https://github.com/llvm/llvm-project/pull/83584