13071c3c7d
x86_64/i686 has for a few months working std::bfloat16_t support, __bf16
there is no longer a storage only type, but can be used for arithmetics
and is supported in libgcc and libstdc++.
The following patch adds similar support for AArch64.
Unlike the x86 changes, this one keeps the old __bf16 mangling of
u6__bf16 rather than DF16b (so an exception from Itanium ABI), but
otherwise __bf16 and decltype (0.0bf16) are the same type and both
in C++ act as extended floating-point type.
2023-03-13 Jakub Jelinek <jakub@redhat.com>
gcc/
* config/aarch64/aarch64.h (aarch64_bf16_type_node): Remove.
(aarch64_bf16_ptr_type_node): Adjust comment.
* config/aarch64/aarch64.cc (aarch64_gimplify_va_arg_expr): Use
bfloat16_type_node rather than aarch64_bf16_type_node.
(aarch64_libgcc_floating_mode_supported_p,
aarch64_scalar_mode_supported_p): Also support BFmode.
(aarch64_invalid_conversion, aarch64_invalid_unary_op): Remove.
(aarch64_invalid_binary_op): Remove BFmode related rejections.
(TARGET_INVALID_CONVERSION, TARGET_INVALID_UNARY_OP): Don't redefine.
* config/aarch64/aarch64-builtins.cc (aarch64_bf16_type_node): Remove.
(aarch64_int_or_fp_type): Use bfloat16_type_node rather than
aarch64_bf16_type_node.
(aarch64_init_simd_builtin_types): Likewise.
(aarch64_init_bf16_types): Likewise. Don't create bfloat16_type_node,
which is created in tree.cc already.
* config/aarch64/aarch64-sve-builtins.def (svbfloat16_t): Likewise.
gcc/testsuite/
* gcc.target/aarch64/sve/acle/general-c/ternary_bfloat16_opt_n_1.c:
Don't expect one __bf16 related error.
* gcc.target/aarch64/bfloat16_vector_typecheck_1.c: Adjust or remove
dg-error directives for __bf16 being an extended arithmetic type.
* gcc.target/aarch64/bfloat16_vector_typecheck_2.c: Likewise.
* gcc.target/aarch64/bfloat16_scalar_typecheck.c: Likewise.
* g++.target/aarch64/bfloat_cpp_typecheck.C: Don't expect two __bf16
related errors.
libgcc/
* config/aarch64/t-softfp (softfp_extensions): Add bfsf.
(softfp_truncations): Add tfbf dfbf sfbf hfbf.
(softfp_extras): Add floatdibf floatundibf floattibf floatuntibf.
* config/aarch64/libgcc-softfp.ver (GCC_13.0.0): Export
__extendbfsf2 and __trunc{s,d,t,h}fbf2.
* config/aarch64/sfp-machine.h (_FP_NANFRAC_B, _FP_NANSIGN_B): Define.
* soft-fp/floatundibf.c: New file.
* soft-fp/floatdibf.c: New file.
libstdc++-v3/
* config/abi/pre/gnu.ver (CXXABI_1.3.14): Also export __bf16 tinfos
if it isn't mangled as DF16b but u6__bf16.
|
||
|---|---|---|
| .. | ||
| adddf3.c | ||
| addsf3.c | ||
| addtf3.c | ||
| brain.h | ||
| divdf3.c | ||
| divsf3.c | ||
| divtf3.c | ||
| double.h | ||
| eqdf2.c | ||
| eqhf2.c | ||
| eqsf2.c | ||
| eqtf2.c | ||
| extendbfsf2.c | ||
| extenddftf2.c | ||
| extended.h | ||
| extendhfdf2.c | ||
| extendhfsf2.c | ||
| extendhftf2.c | ||
| extendhfxf2.c | ||
| extendsfdf2.c | ||
| extendsftf2.c | ||
| extendxftf2.c | ||
| fixdfdi.c | ||
| fixdfsi.c | ||
| fixdfti.c | ||
| fixhfdi.c | ||
| fixhfsi.c | ||
| fixhfti.c | ||
| fixsfdi.c | ||
| fixsfsi.c | ||
| fixsfti.c | ||
| fixtfdi.c | ||
| fixtfsi.c | ||
| fixtfti.c | ||
| fixunsdfdi.c | ||
| fixunsdfsi.c | ||
| fixunsdfti.c | ||
| fixunshfdi.c | ||
| fixunshfsi.c | ||
| fixunshfti.c | ||
| fixunssfdi.c | ||
| fixunssfsi.c | ||
| fixunssfti.c | ||
| fixunstfdi.c | ||
| fixunstfsi.c | ||
| fixunstfti.c | ||
| floatdibf.c | ||
| floatdidf.c | ||
| floatdihf.c | ||
| floatdisf.c | ||
| floatditf.c | ||
| floatsidf.c | ||
| floatsihf.c | ||
| floatsisf.c | ||
| floatsitf.c | ||
| floattibf.c | ||
| floattidf.c | ||
| floattihf.c | ||
| floattisf.c | ||
| floattitf.c | ||
| floatundibf.c | ||
| floatundidf.c | ||
| floatundihf.c | ||
| floatundisf.c | ||
| floatunditf.c | ||
| floatunsidf.c | ||
| floatunsihf.c | ||
| floatunsisf.c | ||
| floatunsitf.c | ||
| floatuntibf.c | ||
| floatuntidf.c | ||
| floatuntihf.c | ||
| floatuntisf.c | ||
| floatuntitf.c | ||
| gedf2.c | ||
| gesf2.c | ||
| getf2.c | ||
| half.h | ||
| ledf2.c | ||
| lesf2.c | ||
| letf2.c | ||
| muldf3.c | ||
| mulsf3.c | ||
| multf3.c | ||
| negdf2.c | ||
| negsf2.c | ||
| negtf2.c | ||
| op-1.h | ||
| op-2.h | ||
| op-4.h | ||
| op-8.h | ||
| op-common.h | ||
| quad.h | ||
| README | ||
| single.h | ||
| soft-fp.h | ||
| subdf3.c | ||
| subsf3.c | ||
| subtf3.c | ||
| truncbfhf2.c | ||
| truncdfbf2.c | ||
| truncdfhf2.c | ||
| truncdfsf2.c | ||
| trunchfbf2.c | ||
| truncsfbf2.c | ||
| truncsfhf2.c | ||
| trunctfbf2.c | ||
| trunctfdf2.c | ||
| trunctfhf2.c | ||
| trunctfsf2.c | ||
| trunctfxf2.c | ||
| truncxfbf2.c | ||
| truncxfhf2.c | ||
| unorddf2.c | ||
| unordsf2.c | ||
| unordtf2.c | ||
The files in this directory are part of the GNU C Library, not part of GCC. As described at <http://gcc.gnu.org/codingconventions.html>, changes should be made to the GNU C Library and the changed files then imported into GCC.