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| author | peter klausler <pklausler@nvidia.com> | 2020-12-15 11:06:44 -0800 |
|---|---|---|
| committer | peter klausler <pklausler@nvidia.com> | 2020-12-15 17:26:20 -0800 |
| commit | 6aa3591e98402418e110c506cdd488ed1e3021b6 (patch) | |
| tree | 8b0310ee7dd9b39fe1070227383761d348c7f098 /flang/module | |
| parent | 0f903015c7746e1c91da742792dd7ee0ae7dd51e (diff) | |
| download | llvm-6aa3591e98402418e110c506cdd488ed1e3021b6.tar.gz | |
[flang] Implement STORAGE_SIZE(), SIZEOF(), C_SIZEOF()
STORAGE_SIZE() is a standard inquiry intrinsic (size in bits
of an array element of the same type as the argument); SIZEOF()
is a common extension that returns the size in bytes of its
argument; C_SIZEOF() is a renaming of SIZEOF() in module ISO_C_BINDING.
STORAGE_SIZE() and SIZEOF() are implemented via rewrites to
expressions; these expressions will be constant when the necessary
type parameters and bounds are also constant.
Code to calculate the sizes of types (with and without alignment)
was isolated into Evaluate/type.* and /characteristics.*.
Code in Semantics/compute-offsets.* to calculate sizes and alignments
of derived types' scopes was exposed so that it can be called at type
instantiation time (earlier than before) so that these inquiry intrinsics
could be called from specification expressions.
Differential Revision: https://reviews.llvm.org/D93322
Diffstat (limited to 'flang/module')
| -rw-r--r-- | flang/module/__fortran_builtins.f90 | 1 | ||||
| -rw-r--r-- | flang/module/iso_c_binding.f90 | 6 |
2 files changed, 4 insertions, 3 deletions
diff --git a/flang/module/__fortran_builtins.f90 b/flang/module/__fortran_builtins.f90 index bdff2a97954b..167bd80d6ad9 100644 --- a/flang/module/__fortran_builtins.f90 +++ b/flang/module/__fortran_builtins.f90 @@ -16,6 +16,7 @@ module __Fortran_builtins integer, parameter, private :: int64 = selected_int_kind(18) intrinsic :: __builtin_c_f_pointer + intrinsic :: sizeof ! extension type :: __builtin_event_type integer(kind=int64) :: __count diff --git a/flang/module/iso_c_binding.f90 b/flang/module/iso_c_binding.f90 index 52c28e7a031d..eed264f531a4 100644 --- a/flang/module/iso_c_binding.f90 +++ b/flang/module/iso_c_binding.f90 @@ -13,7 +13,8 @@ module iso_c_binding use __Fortran_builtins, only: & c_f_pointer => __builtin_c_f_pointer, & c_ptr => __builtin_c_ptr, & - c_funptr => __builtin_c_funptr + c_funptr => __builtin_c_funptr, & + c_sizeof => sizeof type(c_ptr), parameter :: c_null_ptr = c_ptr(0) type(c_funptr), parameter :: c_null_funptr = c_funptr(0) @@ -32,7 +33,7 @@ module iso_c_binding c_long = c_int64_t, & c_long_long = c_int64_t, & c_signed_char = c_int8_t, & - c_size_t = c_long_long, & + c_size_t = kind(c_sizeof(1)), & c_intmax_t = c_int128_t, & c_intptr_t = c_size_t, & c_ptrdiff_t = c_size_t @@ -102,6 +103,5 @@ module iso_c_binding end function c_funloc ! TODO c_f_procpointer - ! TODO c_sizeof end module iso_c_binding |