[PATCH v2 00/10] LoongArch: Hard Float Support Of Math Functions.

[Xiaolin Tang]

  Hi, reviewers.
  Those patches contains hardware floating-point support of math fuctions
for the LoongArch ISA. LoongArch ISA has many hardware floating-point
instructions that can be used in the corresponding math functions,
and the performance of those newly implemented functions is good.

Changes from v1 to v2:
  1. Delete copysign{f/ } to implement it on compiler.
(https://gcc.gnu.org/pipermail/gcc-patches/2022-November/605071.html)
  2. Replace __builtin_expect with __glibc_likely or __glibc_unlikely.
  3. Add a brief description on each file header.
  4. Split one patch to ten patches for similar functions implementation.

instructions                     functions
fma.{s/d}                        __fma{f/ }
f{max/min}.{s/d}, fclass.{s/d}   __f{max/min}i{mum/mum_mum}{f/ }
f{maxa/mina}.{s/d}               __f{max,min}mag{f/ }
f{maxa/mina}.{s/d}, fclass.{s/d  __f{max/min}imum{_mag/_mag_num}{f/ }
frint.{s/d}                      __{ /l/ll}rint{f/ }
fscaleb.{s/d}, fclass.{s/d}      __scalbn{f/ }, __ieee754__scalb{f/ }
flogb.{s/d}, fclass.{s/d}        __logb{f/ }, __ieee754_ilogb{f/ }
fclass.{s/d}                     __fpclassify{f/ }, __issignaling{f/ }
                                 __finite{f/ }, __isnan{f/ }, isinff{f/ }

Xiaolin Tang (10):
  LoongArch: Hard Float Support for functions {ll/l/ }rint{f/ }.
  LoongArch: Use __builtin_{fma, fmaf} to implement function {fma,
    fmaf}.
  LoongArch: Hard Float Support for float-point classification
    functions.
  LoongArch: Hard Float Support for functions logb{f/ },
    __ieee754_ilogb{f/ }.
  LoongArch: Hard Float Support for functions scalb{f/ }, scalbn{f/ }.
  LoongArch: Hard Float Support for fmaximum{f/ }, fminimum{f/ }.
  LoongArch: Hard Float Support for fmaximum_num{f/ }, fminimum_num{f/
    }.
  LoongArch: Hard Float Support for fmaxmag{f/ }, fminmag{f/ }.
  LoongArch: Hard Float Support for fmaximum_mag{f/ }, fminimum_mag{f/
    }.
  LoongArch: Hard Float Support for fmaximum_mag_num{f/ },
    fminimum_mag_num{f/ }.

 sysdeps/loongarch/fpu/e_ilogb.c               | 39 ++++++++++++
 sysdeps/loongarch/fpu/e_ilogbf.c              | 39 ++++++++++++
 sysdeps/loongarch/fpu/e_scalb.c               | 61 +++++++++++++++++++
 sysdeps/loongarch/fpu/e_scalbf.c              | 61 +++++++++++++++++++
 sysdeps/loongarch/fpu/math-use-builtins-fma.h |  4 ++
 sysdeps/loongarch/fpu/s_finite.c              | 30 +++++++++
 sysdeps/loongarch/fpu/s_finitef.c             | 30 +++++++++
 sysdeps/loongarch/fpu/s_fmaximum.c            | 40 ++++++++++++
 sysdeps/loongarch/fpu/s_fmaximum_mag.c        | 40 ++++++++++++
 sysdeps/loongarch/fpu/s_fmaximum_mag_num.c    | 48 +++++++++++++++
 sysdeps/loongarch/fpu/s_fmaximum_mag_numf.c   | 48 +++++++++++++++
 sysdeps/loongarch/fpu/s_fmaximum_magf.c       | 40 ++++++++++++
 sysdeps/loongarch/fpu/s_fmaximum_num.c        | 48 +++++++++++++++
 sysdeps/loongarch/fpu/s_fmaximum_numf.c       | 49 +++++++++++++++
 sysdeps/loongarch/fpu/s_fmaximumf.c           | 40 ++++++++++++
 sysdeps/loongarch/fpu/s_fmaxmag.c             | 29 +++++++++
 sysdeps/loongarch/fpu/s_fmaxmagf.c            | 29 +++++++++
 sysdeps/loongarch/fpu/s_fminimum.c            | 40 ++++++++++++
 sysdeps/loongarch/fpu/s_fminimum_mag.c        | 40 ++++++++++++
 sysdeps/loongarch/fpu/s_fminimum_mag_num.c    | 48 +++++++++++++++
 sysdeps/loongarch/fpu/s_fminimum_mag_numf.c   | 48 +++++++++++++++
 sysdeps/loongarch/fpu/s_fminimum_magf.c       | 40 ++++++++++++
 sysdeps/loongarch/fpu/s_fminimum_num.c        | 48 +++++++++++++++
 sysdeps/loongarch/fpu/s_fminimum_numf.c       | 48 +++++++++++++++
 sysdeps/loongarch/fpu/s_fminimumf.c           | 40 ++++++++++++
 sysdeps/loongarch/fpu/s_fminmag.c             | 29 +++++++++
 sysdeps/loongarch/fpu/s_fminmagf.c            | 29 +++++++++
 sysdeps/loongarch/fpu/s_fpclassify.c          | 38 ++++++++++++
 sysdeps/loongarch/fpu/s_fpclassifyf.c         | 38 ++++++++++++
 sysdeps/loongarch/fpu/s_isinf.c               | 30 +++++++++
 sysdeps/loongarch/fpu/s_isinff.c              | 30 +++++++++
 sysdeps/loongarch/fpu/s_isnan.c               | 31 ++++++++++
 sysdeps/loongarch/fpu/s_isnanf.c              | 31 ++++++++++
 sysdeps/loongarch/fpu/s_issignaling.c         | 29 +++++++++
 sysdeps/loongarch/fpu/s_issignalingf.c        | 29 +++++++++
 sysdeps/loongarch/fpu/s_llrint.c              | 29 +++++++++
 sysdeps/loongarch/fpu/s_llrintf.c             | 29 +++++++++
 sysdeps/loongarch/fpu/s_logb.c                | 30 +++++++++
 sysdeps/loongarch/fpu/s_logbf.c               | 30 +++++++++
 sysdeps/loongarch/fpu/s_lrint.c               | 29 +++++++++
 sysdeps/loongarch/fpu/s_lrintf.c              | 29 +++++++++
 sysdeps/loongarch/fpu/s_rint.c                | 29 +++++++++
 sysdeps/loongarch/fpu/s_rintf.c               | 29 +++++++++
 sysdeps/loongarch/fpu/s_scalbn.c              | 29 +++++++++
 sysdeps/loongarch/fpu/s_scalbnf.c             | 29 +++++++++
 sysdeps/loongarch/fpu_control.h               | 17 ++++++
 46 files changed, 1650 insertions(+)
 create mode 100644 sysdeps/loongarch/fpu/e_ilogb.c
 create mode 100644 sysdeps/loongarch/fpu/e_ilogbf.c
 create mode 100644 sysdeps/loongarch/fpu/e_scalb.c
 create mode 100644 sysdeps/loongarch/fpu/e_scalbf.c
 create mode 100644 sysdeps/loongarch/fpu/math-use-builtins-fma.h
 create mode 100644 sysdeps/loongarch/fpu/s_finite.c
 create mode 100644 sysdeps/loongarch/fpu/s_finitef.c
 create mode 100644 sysdeps/loongarch/fpu/s_fmaximum.c
 create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_mag.c
 create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_mag_num.c
 create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_mag_numf.c
 create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_magf.c
 create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_num.c
 create mode 100644 sysdeps/loongarch/fpu/s_fmaximum_numf.c
 create mode 100644 sysdeps/loongarch/fpu/s_fmaximumf.c
 create mode 100644 sysdeps/loongarch/fpu/s_fmaxmag.c
 create mode 100644 sysdeps/loongarch/fpu/s_fmaxmagf.c
 create mode 100644 sysdeps/loongarch/fpu/s_fminimum.c
 create mode 100644 sysdeps/loongarch/fpu/s_fminimum_mag.c
 create mode 100644 sysdeps/loongarch/fpu/s_fminimum_mag_num.c
 create mode 100644 sysdeps/loongarch/fpu/s_fminimum_mag_numf.c
 create mode 100644 sysdeps/loongarch/fpu/s_fminimum_magf.c
 create mode 100644 sysdeps/loongarch/fpu/s_fminimum_num.c
 create mode 100644 sysdeps/loongarch/fpu/s_fminimum_numf.c
 create mode 100644 sysdeps/loongarch/fpu/s_fminimumf.c
 create mode 100644 sysdeps/loongarch/fpu/s_fminmag.c
 create mode 100644 sysdeps/loongarch/fpu/s_fminmagf.c
 create mode 100644 sysdeps/loongarch/fpu/s_fpclassify.c
 create mode 100644 sysdeps/loongarch/fpu/s_fpclassifyf.c
 create mode 100644 sysdeps/loongarch/fpu/s_isinf.c
 create mode 100644 sysdeps/loongarch/fpu/s_isinff.c
 create mode 100644 sysdeps/loongarch/fpu/s_isnan.c
 create mode 100644 sysdeps/loongarch/fpu/s_isnanf.c
 create mode 100644 sysdeps/loongarch/fpu/s_issignaling.c
 create mode 100644 sysdeps/loongarch/fpu/s_issignalingf.c
 create mode 100644 sysdeps/loongarch/fpu/s_llrint.c
 create mode 100644 sysdeps/loongarch/fpu/s_llrintf.c
 create mode 100644 sysdeps/loongarch/fpu/s_logb.c
 create mode 100644 sysdeps/loongarch/fpu/s_logbf.c
 create mode 100644 sysdeps/loongarch/fpu/s_lrint.c
 create mode 100644 sysdeps/loongarch/fpu/s_lrintf.c
 create mode 100644 sysdeps/loongarch/fpu/s_rint.c
 create mode 100644 sysdeps/loongarch/fpu/s_rintf.c
 create mode 100644 sysdeps/loongarch/fpu/s_scalbn.c
 create mode 100644 sysdeps/loongarch/fpu/s_scalbnf.c

-- 
2.36.0