8c7cee80eb
1 At point <https://github.com/riscv/riscv-bfloat16>, BF16 has already been completed "post public review". 2 LLVM has also added support for RISCV BF16 in <https://reviews.llvm.org/D151313> and <https://reviews.llvm.org/D150929>. 3 According to the discussion <https://github.com/riscv-non-isa/riscv-elf-psabi-doc/pull/367>, this use __bf16 and use DF16b in riscv_mangle_type like x86. Below test are passed for this patch * The riscv fully regression test. gcc/ChangeLog: * config/riscv/iterators.md: New mode iterator HFBF. * config/riscv/riscv-builtins.cc (riscv_init_builtin_types): Initialize data type _Bfloat16. * config/riscv/riscv-modes.def (FLOAT_MODE): New. (ADJUST_FLOAT_FORMAT): New. * config/riscv/riscv.cc (riscv_mangle_type): Support for BFmode. (riscv_scalar_mode_supported_p): Ditto. (riscv_libgcc_floating_mode_supported_p): Ditto. (riscv_init_libfuncs): Set the conversion method for BFmode and HFmode. (riscv_block_arith_comp_libfuncs_for_mode): Set the arithmetic and comparison libfuncs for the mode. * config/riscv/riscv.md (mode" ): Add BF. (movhf): Support for BFmode. (mov<mode>): Ditto. (*movhf_softfloat): Ditto. (*mov<mode>_softfloat): Ditto. libgcc/ChangeLog: * config/riscv/sfp-machine.h (_FP_NANFRAC_B): New. (_FP_NANSIGN_B): Ditto. * config/riscv/t-softfp32: Add support for BF16 libfuncs. * config/riscv/t-softfp64: Ditto. * soft-fp/floatsibf.c: For si -> bf16. * soft-fp/floatunsibf.c: For unsi -> bf16. gcc/testsuite/ChangeLog: * gcc.target/riscv/bf16_arithmetic.c: New test. * gcc.target/riscv/bf16_call.c: New test. * gcc.target/riscv/bf16_comparison.c: New test. * gcc.target/riscv/bf16_float_libcall_convert.c: New test. * gcc.target/riscv/bf16_integer_libcall_convert.c: New test. Co-authored-by: Jin Ma <jinma@linux.alibaba.com>
52 lines
1.2 KiB
Text
52 lines
1.2 KiB
Text
ABI_SINGLE:=$(findstring __riscv_float_abi_single,$(shell $(gcc_compile_bare) -dM -E - </dev/null))
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ABI_DOUBLE:=$(findstring __riscv_float_abi_double,$(shell $(gcc_compile_bare) -dM -E - </dev/null))
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ABI_QUAD:=$(findstring __riscv_float_abi_quad,$(shell $(gcc_compile_bare) -dM -E - </dev/null))
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softfp_int_modes := si di
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softfp_exclude_libgcc2 := n
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ifndef ABI_QUAD
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ifdef ABI_DOUBLE
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softfp_float_modes := tf
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softfp_extensions := sftf dftf
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softfp_truncations := tfsf tfdf
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# Enable divide routines to make -mno-fdiv work.
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softfp_extras += divsf3 divdf3
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else
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# !ABI_DOUBLE
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softfp_float_modes := df tf
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softfp_extensions := sfdf sftf dftf
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softfp_truncations := dfsf tfsf tfdf
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ifndef ABI_SINGLE
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softfp_float_modes += sf
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else
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# ABI_SINGLE
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# Enable divide routines to make -mno-fdiv work.
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softfp_extras += divsf3
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endif
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endif
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else
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# ABI_QUAD
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# Enable divide routines to make -mno-fdiv work.
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softfp_extras += divsf3 divdf3 divtf3
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endif
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softfp_extensions += hfsf hfdf hftf \
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bfsf
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softfp_truncations += tfhf dfhf sfhf \
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tfbf dfbf sfbf \
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hfbf bfhf
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softfp_extras += fixhfsi fixhfdi fixunshfsi fixunshfdi \
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floatsihf floatdihf floatunsihf floatundihf \
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floatsibf floatdibf floatunsibf floatundibf
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