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[libc][stdfix] Implement fixed point bitsfx functions in llvm-libc
Signed-off-by: Kushal Pal <[email protected]>
1 parent 08e7609 commit a81ccb7

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+871
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lines changed

‎libc/config/baremetal/arm/entrypoints.txt‎

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@@ -467,6 +467,18 @@ if(LIBC_COMPILER_HAS_FIXED_POINT)
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libc.src.stdfix.ukbits
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libc.src.stdfix.lkbits
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libc.src.stdfix.ulkbits
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libc.src.stdfix.bitshr
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libc.src.stdfix.bitsuhr
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libc.src.stdfix.bitsr
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libc.src.stdfix.bitsur
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libc.src.stdfix.bitslr
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libc.src.stdfix.bitsulr
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libc.src.stdfix.bitshk
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libc.src.stdfix.bitsuhk
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libc.src.stdfix.bitsk
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libc.src.stdfix.bitsuk
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libc.src.stdfix.bitslk
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libc.src.stdfix.bitsulk
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)
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endif()
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‎libc/config/baremetal/riscv/entrypoints.txt‎

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@@ -462,6 +462,18 @@ if(LIBC_COMPILER_HAS_FIXED_POINT)
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libc.src.stdfix.ukbits
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libc.src.stdfix.lkbits
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libc.src.stdfix.ulkbits
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libc.src.stdfix.bitshr
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libc.src.stdfix.bitsuhr
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libc.src.stdfix.bitsr
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libc.src.stdfix.bitsur
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libc.src.stdfix.bitslr
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libc.src.stdfix.bitsulr
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libc.src.stdfix.bitshk
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libc.src.stdfix.bitsuhk
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libc.src.stdfix.bitsk
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libc.src.stdfix.bitsuk
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libc.src.stdfix.bitslk
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libc.src.stdfix.bitsulk
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)
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endif()
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‎libc/config/linux/riscv/entrypoints.txt‎

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@@ -730,6 +730,19 @@ if(LIBC_COMPILER_HAS_FIXED_POINT)
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# TODO: https://github.com/llvm/llvm-project/issues/115778
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libc.src.stdfix.lkbits
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libc.src.stdfix.ulkbits
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libc.src.stdfix.bitshr
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libc.src.stdfix.bitsuhr
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libc.src.stdfix.bitsr
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libc.src.stdfix.bitsur
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libc.src.stdfix.bitslr
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libc.src.stdfix.bitsulr
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libc.src.stdfix.bitshk
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libc.src.stdfix.bitsuhk
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libc.src.stdfix.bitsk
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libc.src.stdfix.bitsuk
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libc.src.stdfix.bitslk
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libc.src.stdfix.bitsulk
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)
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endif()
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‎libc/config/linux/x86_64/entrypoints.txt‎

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@@ -841,6 +841,18 @@ if(LIBC_COMPILER_HAS_FIXED_POINT)
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libc.src.stdfix.ukbits
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libc.src.stdfix.lkbits
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libc.src.stdfix.ulkbits
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libc.src.stdfix.bitshr
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libc.src.stdfix.bitsuhr
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libc.src.stdfix.bitsr
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libc.src.stdfix.bitsur
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libc.src.stdfix.bitslr
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libc.src.stdfix.bitsulr
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libc.src.stdfix.bitshk
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libc.src.stdfix.bitsuhk
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libc.src.stdfix.bitsk
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libc.src.stdfix.bitsuk
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libc.src.stdfix.bitslk
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libc.src.stdfix.bitsulk
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)
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endif()
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‎libc/newhdrgen/yaml/stdfix.yaml‎

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@@ -147,6 +147,90 @@ functions:
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arguments:
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- type: uint_ulk_t
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitshr
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standards:
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- stdc_ext
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return_type: int_hr_t
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arguments:
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- type: short fract
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitsuhr
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standards:
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- stdc_ext
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return_type: uint_uhr_t
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arguments:
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- type: unsigned short fract
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitsr
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standards:
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- stdc_ext
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return_type: int_r_t
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arguments:
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- type: fract
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitsur
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standards:
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- stdc_ext
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return_type: uint_ur_t
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arguments:
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- type: unsigned fract
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitslr
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standards:
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- stdc_ext
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return_type: int_lr_t
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arguments:
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- type: long fract
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitsulr
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standards:
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- stdc_ext
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return_type: uint_ulr_t
189+
arguments:
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- type: unsigned long fract
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitshk
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standards:
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- stdc_ext
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return_type: int_hk_t
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arguments:
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- type: short accum
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitsuhk
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standards:
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- stdc_ext
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return_type: uint_uhk_t
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arguments:
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- type: unsigned short accum
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitsk
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standards:
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- stdc_ext
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return_type: int_k_t
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arguments:
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- type: accum
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitsuk
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standards:
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- stdc_ext
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return_type: uint_uk_t
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arguments:
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- type: unsigned accum
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitslk
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standards:
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- stdc_ext
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return_type: uint_ulr_t
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arguments:
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- type: long accum
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: bitsulk
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standards:
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- stdc_ext
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return_type: uint_ulk_t
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arguments:
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- type: unsigned long accum
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guard: LIBC_COMPILER_HAS_FIXED_POINT
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- name: roundhk
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standards:
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- stdc_ext

‎libc/spec/stdc_ext.td‎

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@@ -73,6 +73,19 @@ def StdcExt : StandardSpec<"stdc_ext"> {
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GuardedFunctionSpec<"ulrbits", RetValSpec<UnsignedLongFractType>, [ArgSpec<UIntUlrT>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"uhkbits", RetValSpec<UnsignedShortAccumType>, [ArgSpec<UIntUhkT>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"ulkbits", RetValSpec<UnsignedLongAccumType>, [ArgSpec<UIntUlkT>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"bitshr", RetValSpec<IntHrT>, [ArgSpec<ShortFractType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"bitsr", RetValSpec<IntRT>, [ArgSpec<FractType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"bitslr", RetValSpec<IntLrT>, [ArgSpec<LongFractType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"bitshk", RetValSpec<IntHkT>, [ArgSpec<ShortAccumType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"bitsk", RetValSpec<IntKT>, [ArgSpec<AccumType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"bitslk", RetValSpec<IntLkT>, [ArgSpec<LongAccumType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
83+
GuardedFunctionSpec<"bitsuhr", RetValSpec<UIntUhrT>, [ArgSpec<UnsignedShortFractType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"bitsur", RetValSpec<UIntUrI>, [ArgSpec<UnsignedFractType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"bitsuk", RetValSpec<UIntUkT>, [ArgSpec<UnsignedAccumType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
86+
GuardedFunctionSpec<"bitsulr", RetValSpec<UIntUlrT>, [ArgSpec<UnsignedLongFractType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"bitsuhk", RetValSpec<UIntUhkT>, [ArgSpec<UnsignedShortAccumType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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GuardedFunctionSpec<"bitsulk", RetValSpec<UIntUlkT>, [ArgSpec<UnsignedLongAccumType>], "LIBC_COMPILER_HAS_FIXED_POINT">,
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]
7790
>;
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‎libc/src/stdfix/CMakeLists.txt‎

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@@ -53,6 +53,18 @@ foreach(suffix IN ITEMS hr r lr hk k lk uhr ur ulr uhk uk ulk)
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libc.src.__support.CPP.bit
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libc.src.__support.fixed_point.fx_bits
5555
)
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add_entrypoint_object(
58+
bits${suffix}
59+
HDRS
60+
bits${suffix}.h
61+
SRCS
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bits${suffix}.cpp
63+
DEPENDS
64+
libc.src.__support.CPP.bit
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libc.src.__support.fixed_point.fx_bits
66+
)
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5668
endforeach()
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add_entrypoint_object(

‎libc/src/stdfix/bitshk.cpp‎

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//===-- Implementation of bitshk function ---------------------------------===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
5+
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6+
//
7+
//===----------------------------------------------------------------------===//
8+
9+
#include "bitshk.h"
10+
#include "src/__support/common.h"
11+
#include "src/__support/fixed_point/fx_bits.h"
12+
#include "src/__support/macros/config.h"
13+
14+
namespace LIBC_NAMESPACE_DECL {
15+
LLVM_LIBC_FUNCTION(int_hk_t, bitshk, (short accum x)) {
16+
return cpp::bit_cast<int_hk_t, short accum>(x);
17+
}
18+
19+
} // namespace LIBC_NAMESPACE_DECL

‎libc/src/stdfix/bitshk.h‎

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//===-- Implementation header for bitshk ------------------------*- C++ -*-===//
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//
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// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
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// See https://llvm.org/LICENSE.txt for license information.
5+
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6+
//
7+
//===----------------------------------------------------------------------===//
8+
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#ifndef LLVM_LIBC_SRC_STDFIX_BITSHK_H
10+
#define LLVM_LIBC_SRC_STDFIX_BITSHK_H
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12+
#include "include/llvm-libc-macros/stdfix-macros.h"
13+
#include "include/llvm-libc-types/stdfix-types.h"
14+
#include "src/__support/macros/config.h"
15+
16+
namespace LIBC_NAMESPACE_DECL {
17+
18+
int_hk_t bitshk(short accum x);
19+
20+
} // namespace LIBC_NAMESPACE_DECL
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#endif // LLVM_LIBC_SRC_STDFIX_BITSHK_H

‎libc/src/stdfix/bitshr.cpp‎

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//===-- Implementation of bitshr function ---------------------------------===//
2+
//
3+
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4+
// See https://llvm.org/LICENSE.txt for license information.
5+
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6+
//
7+
//===----------------------------------------------------------------------===//
8+
9+
#include "bitshr.h"
10+
#include "src/__support/common.h"
11+
#include "src/__support/fixed_point/fx_bits.h"
12+
#include "src/__support/macros/config.h"
13+
14+
namespace LIBC_NAMESPACE_DECL {
15+
LLVM_LIBC_FUNCTION(int_hr_t, bitshr, (short fract x)) {
16+
return cpp::bit_cast<int_hr_t, short fract>(x);
17+
}
18+
19+
} // namespace LIBC_NAMESPACE_DECL

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