[v14,11/26] c++: Implement __remove_extent built-in trait
Commit Message
This patch implements built-in trait for std::remove_extent.
gcc/cp/ChangeLog:
* cp-trait.def: Define __remove_extent.
* semantics.cc (finish_trait_type): Handle CPTK_REMOVE_EXTENT.
gcc/testsuite/ChangeLog:
* g++.dg/ext/has-builtin-1.C: Test existence of __remove_extent.
* g++.dg/ext/remove_extent.C: New test.
Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org>
---
gcc/cp/cp-trait.def | 1 +
gcc/cp/semantics.cc | 5 +++++
gcc/testsuite/g++.dg/ext/has-builtin-1.C | 3 +++
gcc/testsuite/g++.dg/ext/remove_extent.C | 16 ++++++++++++++++
4 files changed, 25 insertions(+)
create mode 100644 gcc/testsuite/g++.dg/ext/remove_extent.C
Comments
On 2/28/24 11:26, Ken Matsui wrote:
> This patch implements built-in trait for std::remove_extent.
OK.
> gcc/cp/ChangeLog:
>
> * cp-trait.def: Define __remove_extent.
> * semantics.cc (finish_trait_type): Handle CPTK_REMOVE_EXTENT.
>
> gcc/testsuite/ChangeLog:
>
> * g++.dg/ext/has-builtin-1.C: Test existence of __remove_extent.
> * g++.dg/ext/remove_extent.C: New test.
>
> Signed-off-by: Ken Matsui <kmatsui@gcc.gnu.org>
> ---
> gcc/cp/cp-trait.def | 1 +
> gcc/cp/semantics.cc | 5 +++++
> gcc/testsuite/g++.dg/ext/has-builtin-1.C | 3 +++
> gcc/testsuite/g++.dg/ext/remove_extent.C | 16 ++++++++++++++++
> 4 files changed, 25 insertions(+)
> create mode 100644 gcc/testsuite/g++.dg/ext/remove_extent.C
>
> diff --git a/gcc/cp/cp-trait.def b/gcc/cp/cp-trait.def
> index 63f879287ce..577c96d579b 100644
> --- a/gcc/cp/cp-trait.def
> +++ b/gcc/cp/cp-trait.def
> @@ -100,6 +100,7 @@ DEFTRAIT_EXPR (REF_CONSTRUCTS_FROM_TEMPORARY, "__reference_constructs_from_tempo
> DEFTRAIT_EXPR (REF_CONVERTS_FROM_TEMPORARY, "__reference_converts_from_temporary", 2)
> DEFTRAIT_TYPE (REMOVE_CV, "__remove_cv", 1)
> DEFTRAIT_TYPE (REMOVE_CVREF, "__remove_cvref", 1)
> +DEFTRAIT_TYPE (REMOVE_EXTENT, "__remove_extent", 1)
> DEFTRAIT_TYPE (REMOVE_POINTER, "__remove_pointer", 1)
> DEFTRAIT_TYPE (REMOVE_REFERENCE, "__remove_reference", 1)
> DEFTRAIT_TYPE (TYPE_PACK_ELEMENT, "__type_pack_element", -1)
> diff --git a/gcc/cp/semantics.cc b/gcc/cp/semantics.cc
> index 635441a7a90..58696225fc4 100644
> --- a/gcc/cp/semantics.cc
> +++ b/gcc/cp/semantics.cc
> @@ -12793,6 +12793,11 @@ finish_trait_type (cp_trait_kind kind, tree type1, tree type2,
> type1 = TREE_TYPE (type1);
> return cv_unqualified (type1);
>
> + case CPTK_REMOVE_EXTENT:
> + if (TREE_CODE (type1) == ARRAY_TYPE)
> + type1 = TREE_TYPE (type1);
> + return type1;
> +
> case CPTK_REMOVE_POINTER:
> if (TYPE_PTR_P (type1))
> type1 = TREE_TYPE (type1);
> diff --git a/gcc/testsuite/g++.dg/ext/has-builtin-1.C b/gcc/testsuite/g++.dg/ext/has-builtin-1.C
> index 9d861398bae..5d5cbe3b019 100644
> --- a/gcc/testsuite/g++.dg/ext/has-builtin-1.C
> +++ b/gcc/testsuite/g++.dg/ext/has-builtin-1.C
> @@ -182,6 +182,9 @@
> #if !__has_builtin (__remove_cvref)
> # error "__has_builtin (__remove_cvref) failed"
> #endif
> +#if !__has_builtin (__remove_extent)
> +# error "__has_builtin (__remove_extent) failed"
> +#endif
> #if !__has_builtin (__remove_pointer)
> # error "__has_builtin (__remove_pointer) failed"
> #endif
> diff --git a/gcc/testsuite/g++.dg/ext/remove_extent.C b/gcc/testsuite/g++.dg/ext/remove_extent.C
> new file mode 100644
> index 00000000000..6183aca5a48
> --- /dev/null
> +++ b/gcc/testsuite/g++.dg/ext/remove_extent.C
> @@ -0,0 +1,16 @@
> +// { dg-do compile { target c++11 } }
> +
> +#define SA(X) static_assert((X),#X)
> +
> +class ClassType { };
> +
> +SA(__is_same(__remove_extent(int), int));
> +SA(__is_same(__remove_extent(int[2]), int));
> +SA(__is_same(__remove_extent(int[2][3]), int[3]));
> +SA(__is_same(__remove_extent(int[][3]), int[3]));
> +SA(__is_same(__remove_extent(const int[2]), const int));
> +SA(__is_same(__remove_extent(ClassType), ClassType));
> +SA(__is_same(__remove_extent(ClassType[2]), ClassType));
> +SA(__is_same(__remove_extent(ClassType[2][3]), ClassType[3]));
> +SA(__is_same(__remove_extent(ClassType[][3]), ClassType[3]));
> +SA(__is_same(__remove_extent(const ClassType[2]), const ClassType));
@@ -100,6 +100,7 @@ DEFTRAIT_EXPR (REF_CONSTRUCTS_FROM_TEMPORARY, "__reference_constructs_from_tempo
DEFTRAIT_EXPR (REF_CONVERTS_FROM_TEMPORARY, "__reference_converts_from_temporary", 2)
DEFTRAIT_TYPE (REMOVE_CV, "__remove_cv", 1)
DEFTRAIT_TYPE (REMOVE_CVREF, "__remove_cvref", 1)
+DEFTRAIT_TYPE (REMOVE_EXTENT, "__remove_extent", 1)
DEFTRAIT_TYPE (REMOVE_POINTER, "__remove_pointer", 1)
DEFTRAIT_TYPE (REMOVE_REFERENCE, "__remove_reference", 1)
DEFTRAIT_TYPE (TYPE_PACK_ELEMENT, "__type_pack_element", -1)
@@ -12793,6 +12793,11 @@ finish_trait_type (cp_trait_kind kind, tree type1, tree type2,
type1 = TREE_TYPE (type1);
return cv_unqualified (type1);
+ case CPTK_REMOVE_EXTENT:
+ if (TREE_CODE (type1) == ARRAY_TYPE)
+ type1 = TREE_TYPE (type1);
+ return type1;
+
case CPTK_REMOVE_POINTER:
if (TYPE_PTR_P (type1))
type1 = TREE_TYPE (type1);
@@ -182,6 +182,9 @@
#if !__has_builtin (__remove_cvref)
# error "__has_builtin (__remove_cvref) failed"
#endif
+#if !__has_builtin (__remove_extent)
+# error "__has_builtin (__remove_extent) failed"
+#endif
#if !__has_builtin (__remove_pointer)
# error "__has_builtin (__remove_pointer) failed"
#endif
new file mode 100644
@@ -0,0 +1,16 @@
+// { dg-do compile { target c++11 } }
+
+#define SA(X) static_assert((X),#X)
+
+class ClassType { };
+
+SA(__is_same(__remove_extent(int), int));
+SA(__is_same(__remove_extent(int[2]), int));
+SA(__is_same(__remove_extent(int[2][3]), int[3]));
+SA(__is_same(__remove_extent(int[][3]), int[3]));
+SA(__is_same(__remove_extent(const int[2]), const int));
+SA(__is_same(__remove_extent(ClassType), ClassType));
+SA(__is_same(__remove_extent(ClassType[2]), ClassType));
+SA(__is_same(__remove_extent(ClassType[2][3]), ClassType[3]));
+SA(__is_same(__remove_extent(ClassType[][3]), ClassType[3]));
+SA(__is_same(__remove_extent(const ClassType[2]), const ClassType));