diff options
| author | Richard Henderson <rth@gcc.gnu.org> | 2005-01-22 14:49:06 -0800 |
|---|---|---|
| committer | Richard Henderson <rth@gcc.gnu.org> | 2005-01-22 14:49:06 -0800 |
| commit | 7ae4d8d4214508d400e28845b773e775ddbb7ac3 (patch) | |
| tree | 44a7d07f7a98f7ff87b2faa87658e1de80d69f42 /gcc/doc/rtl.texi | |
| parent | 190607885a2178612dcd3faefcb4a6e31d7c91cb (diff) | |
| download | gcc-7ae4d8d4214508d400e28845b773e775ddbb7ac3.zip gcc-7ae4d8d4214508d400e28845b773e775ddbb7ac3.tar.gz gcc-7ae4d8d4214508d400e28845b773e775ddbb7ac3.tar.bz2 | |
genopinit.c (optabs): Use smin/smax for floating point too.
* genopinit.c (optabs): Use smin/smax for floating point too.
* doc/md.texi: Update to match. Clarify that floating point
results are undefined for +0/-0 and NaN.
* doc/rtl.texi: Likewise.
* rtl.def (SMIN, SMAX): Likewise
* tree.def (MIN_EXPR, MAX_EXPR): Likewise.
* config/alpha/alpha.md (smaxdf3, smindf3, smaxsf3, sminsf3): Add
leading 's' to the name.
* config/ia64/ia64.md (smaxsf3, sminsf3, smaxdf3, smindf3,
smaxxf3, sminxf3): Likewise.
* config/rs6000/rs6000.md (smaxdf3, smindf3, smaxsf3, sminsf3):
Likewise.
From-SVN: r94083
Diffstat (limited to 'gcc/doc/rtl.texi')
| -rw-r--r-- | gcc/doc/rtl.texi | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/gcc/doc/rtl.texi b/gcc/doc/rtl.texi index 9d6b9c2..1244c74 100644 --- a/gcc/doc/rtl.texi +++ b/gcc/doc/rtl.texi @@ -1887,7 +1887,10 @@ the quotient. @item (smin:@var{m} @var{x} @var{y}) @itemx (smax:@var{m} @var{x} @var{y}) Represents the smaller (for @code{smin}) or larger (for @code{smax}) of -@var{x} and @var{y}, interpreted as signed integers in mode @var{m}. +@var{x} and @var{y}, interpreted as signed values in mode @var{m}. +When used with floating point, if both operands are zeros, or if either +operand is @code{NaN}, then it is unspecified which of the two operands +is returned as the result. @findex umin @findex umax |