Hi,
  Gently ping it.
https://gcc.gnu.org/pipermail/gcc-patches/2024-May/652172.html

Thanks
Gui Haochen

在 2024/5/20 16:15, HAO CHEN GUI 写道:
> Hi,
>   This patch adds an optab for __builtin_isnormal. The normal check can be
> implemented on rs6000 by a single instruction. It needs an optab to be
> expanded to the certain sequence of instructions.
> 
>   The subsequent patches will implement the expand on rs6000.
> 
>   Compared to previous version, the main change is to document isnormal
> in md.texi.
> https://gcc.gnu.org/pipermail/gcc-patches/2024-April/649366.html
> 
>   Bootstrapped and tested on x86 and powerpc64-linux BE and LE with no
> regressions. Is this OK for trunk?
> 
> Thanks
> Gui Haochen
> 
> ChangeLog
> optab: Add isnormal_optab for isnormal builtin
> 
> gcc/
>       * builtins.cc (interclass_mathfn_icode): Set optab to isnormal_optab
>       for isnormal builtin.
>       * optabs.def (isnormal_optab): New.
>       * doc/md.texi (isnormal): Document.
> 
> 
> patch.diff
> diff --git a/gcc/builtins.cc b/gcc/builtins.cc
> index b8432f84020..ccd57fce522 100644
> --- a/gcc/builtins.cc
> +++ b/gcc/builtins.cc
> @@ -2462,6 +2462,7 @@ interclass_mathfn_icode (tree arg, tree fndecl)
>      case BUILT_IN_ISFINITE:
>        builtin_optab = isfinite_optab; break;
>      case BUILT_IN_ISNORMAL:
> +      builtin_optab = isnormal_optab; break;
>      CASE_FLT_FN (BUILT_IN_FINITE):
>      case BUILT_IN_FINITED32:
>      case BUILT_IN_FINITED64:
> diff --git a/gcc/doc/md.texi b/gcc/doc/md.texi
> index 8ed70b3feea..b81b9dec18a 100644
> --- a/gcc/doc/md.texi
> +++ b/gcc/doc/md.texi
> @@ -8562,6 +8562,11 @@ This pattern is not allowed to @code{FAIL}.
>  Set operand 0 to nonzero if operand 1 is a finite floating-point
>  number and to 0 otherwise.
> 
> +@cindex @code{isnormal@var{m}2} instruction pattern
> +@item @samp{isnormal@var{m}2}
> +Set operand 0 to nonzero if operand 1 is a normal floating-point
> +number and to 0 otherwise.
> +
>  @end table
> 
>  @end ifset
> diff --git a/gcc/optabs.def b/gcc/optabs.def
> index dcd77315c2a..3c401fc0b4c 100644
> --- a/gcc/optabs.def
> +++ b/gcc/optabs.def
> @@ -353,6 +353,7 @@ OPTAB_D (hypot_optab, "hypot$a3")
>  OPTAB_D (ilogb_optab, "ilogb$a2")
>  OPTAB_D (isinf_optab, "isinf$a2")
>  OPTAB_D (isfinite_optab, "isfinite$a2")
> +OPTAB_D (isnormal_optab, "isnormal$a2")
>  OPTAB_D (issignaling_optab, "issignaling$a2")
>  OPTAB_D (ldexp_optab, "ldexp$a3")
>  OPTAB_D (log10_optab, "log10$a2")

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