* md.texi (min, max): Document

git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@40094 138bc75d-0d04-0410-961f-82ee72b054a4

diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 1546b80..2c7cb49 100644 (file)
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+Tue Feb 27 16:01:13 CET 2001  Jan Hubicka  <jh@suse.cz>
+                             Fergus Henderson
+
+       * md.texi (min, max): Document
+       
 Tue Feb 27 15:51:35 CET 2001  Jan Hubicka  <jh@suse.cz>
 
        * i386.md (movsf, movdf): Use movaps for reg-reg moves if

diff --git a/gcc/md.texi b/gcc/md.texi
index b87b877..3a8f8e2 100644 (file)
--- a/gcc/md.texi
+++ b/gcc/md.texi
@@ -2087,6 +2087,13 @@ means of constraints requiring operands 1 and 0 to be the same location.
 @itemx @samp{smin@var{m}3}, @samp{smax@var{m}3}, @samp{umin@var{m}3}, @samp{umax@var{m}3}
 @itemx @samp{and@var{m}3}, @samp{ior@var{m}3}, @samp{xor@var{m}3}
 Similar, for other arithmetic operations.
+@cindex @code{min@var{m}3} instruction pattern
+@cindex @code{max@var{m}3} instruction pattern
+@itemx @samp{min@var{m}3}, @samp{max@var{m}3}
+Floating point min and max operations.  If both operands are zeros,
+or if either operand is NaN, then it is unspecified which of the two
+operands is returned as the result.
+
 
 @cindex @code{mulhisi3} instruction pattern
 @item @samp{mulhisi3}