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 specify acceptable input and output modes for the optab. https://gcc.gnu.org/pipermail/gcc-patches/2024-May/652814.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 7be0c75baf9..491cd09c620 100644 --- a/gcc/doc/md.texi +++ b/gcc/doc/md.texi @@ -8563,6 +8563,12 @@ Set operand 0 to nonzero if operand 1 is a finite floating point number and to 0 otherwise. Input mode should be a scalar floating point mode and output mode should be @code{SImode}. +@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. Input mode should be a scalar floating +point mode and return mode should be @code{SImode}. + @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")
