How about I do this work on Glibc?
在 2022/11/12 下午3:08, Xi Ruoyao 写道:
On Wed, 2022-11-09 at 21:53 +0800, Xi Ruoyao wrote:These patches allow to expand the following builtins to floating point instructions for LoongArch: - __builtin_rint{,f} - __builtin_{l,ll}rint{,f} - __builtin_{l,ll}floor{,f} - __builtin_{l,ll}ceil{,f} - __builtin_scalb{n,ln}{,f} - __builtin_logb{,f} Bootstrapped and regtested on loongarch64-linux-gnu. And a modified Glibc using the builtins for rint{,f}, {l,ll}rint{,f}, and logb{,f} also survived Glibc test suite. Please review ASAP because GCC 13 stage 1 will end on Nov. 13th. v1 -> v2: Only use ftint{rm,rp} instructions if floor and ceil are allowed to raise inexact exception. Xi Ruoyao (4): LoongArch: Rename frint_<fmt> to rint<mode>2 LoongArch: Add ftint{,rm,rp}.{w,l}.{s,d} instructions LoongArch: Add fscaleb.{s,d} instructions as ldexp{sf,df}3 LoongArch: Add flogb.{s,d} instructions and expand logb{sf,df}2 gcc/config/loongarch/loongarch.md | 95 ++++++++++++++++++- gcc/testsuite/gcc.target/loongarch/flogb.c | 18 ++++ gcc/testsuite/gcc.target/loongarch/frint.c | 16 ++++ gcc/testsuite/gcc.target/loongarch/fscaleb.c | 48 ++++++++++ .../gcc.target/loongarch/ftint-no-inexact.c | 44 +++++++++ gcc/testsuite/gcc.target/loongarch/ftint.c | 44 +++++++++ 6 files changed, 261 insertions(+), 4 deletions(-) create mode 100644 gcc/testsuite/gcc.target/loongarch/flogb.c create mode 100644 gcc/testsuite/gcc.target/loongarch/frint.c create mode 100644 gcc/testsuite/gcc.target/loongarch/fscaleb.c create mode 100644 gcc/testsuite/gcc.target/loongarch/ftint-no- inexact.c create mode 100644 gcc/testsuite/gcc.target/loongarch/ftint.cPushed r13-3922. I'll be busy in the following week. Will do the work on Glibc side after Nov. 20.
