t-softfp-compat: Update comments.

2008-07-08  H.J. Lu  <hongjiu.lu@intel.com>

	* config/i386/64/t-softfp-compat: Update comments.

From-SVN: r137619

libgcc/ChangeLog

+2008-07-08  H.J. Lu  <hongjiu.lu@intel.com>
+
+	* config/i386/64/t-softfp-compat: Update comments.
+
 2008-07-07  H.J. Lu  <hongjiu.lu@intel.com>
 
 	* config/i386/64/_divtc3-compat.c: Moved to ...

libgcc/config/i386/64/t-softfp-compat

-# Filter out the following TImode functions and provide backward binary
-# compatibility.
+# When TFmode was first added to x86-64 in gcc 4.3.0, some TFmode
+# support functions got improper versions by accident.  Here we
+# correct the version and provide backward binary compatibility.
+
+# Filter out the following TFmode functions.
 tf-compats = getf2.c letf2.c eqtf2.c
 tf-functions := $(addprefix $(gcc_srcdir)/config/soft-fp/, $(tf-compats))
 LIB2ADD := $(filter-out $(tf-functions), $(LIB2ADD))