re PR target/38402 (Undocumented Yz constraint)

2008-12-12  H.J. Lu  <hongjiu.lu@intel.com>

	PR target/38402
	* gcc/doc/md.texi: Remove Y and document Yz, Y2, Yi and Ym
	constraints for x86.

From-SVN: r142710

gcc/ChangeLog

+2008-12-12  H.J. Lu  <hongjiu.lu@intel.com>
+
+	PR target/38402
+	* gcc/doc/md.texi: Remove Y and document Yz, Y2, Yi and Ym
+	constraints for x86.
+
 2008-12-12  Andreas Schwab  <schwab@suse.de>
 
 	* cfgrtl.c (rtl_verify_flow_info_1): Don't apply BLOCK_FOR_INSN on

gcc/doc/md.texi

@@ -2050,9 +2050,18 @@ Any MMX register.
 @item x
 Any SSE register.
 
+@item Yz
+First SSE register (@code{%xmm0}).
+
 @ifset INTERNALS
-@item Y
-Any SSE2 register.
+@item Y2
+Any SSE register, when SSE2 is enabled.
+
+@item Yi
+Any SSE register, when SSE2 and inter-unit moves are enabled.
+
+@item Ym
+Any MMX register, when inter-unit moves are enabled.
 @end ifset
 
 @item I