i386.c (ix86_expand_move): Never add clobbers to move patterns.

	* i386.c (ix86_expand_move): Never add clobbers to move patterns.
	* i386.md (movsi_xor): New.
	(movsi_or): New.
	(movsi_1, movhi_1, movqi_1): Remove.
	(movsi_2): Rename to movsi_1.
	(movhi_2): Rename to movhi_1.
	(movqi_2): Rename to movqi_1.
	(movdi_1): Remove; remove splitter.
	(movdi_2): Rename to movdi_1.
	(divmodsi4 splitter): Do not emit clobbers for move patterns.
	(long move peep2): Do not create QI or HI mode mov0s
	(mov -1,reg -> or peep2s): Enable again, rewrite to single peephole.

From-SVN: r30741

gcc/ChangeLog

 Tue Nov 30 15:20:52 MET 1999  Jan Hubicka  <hubicka@freesoft.cz>
 
+	* i386.c (ix86_expand_move): Never add clobbers to move patterns.
+	* i386.md (movsi_xor): New.
+	(movsi_or): New.
+	(movsi_1, movhi_1, movqi_1): Remove.
+	(movsi_2): Rename to movsi_1.
+	(movhi_2): Rename to movhi_1.
+	(movqi_2): Rename to movqi_1.
+	(movdi_1): Remove; remove splitter.
+	(movdi_2): Rename to movdi_1.
+	(divmodsi4 splitter): Do not emit clobbers for move patterns.
+	(long move peep2): Do not create QI or HI mode mov0s
+	(mov -1,reg -> or peep2s): Enable again, rewrite to single peephole.
+
 	* i386.md (zero_extend?i?i2): Rewrite to expanders; new patterns,
 	rewrite splitters.
 

gcc/c-gperf.h

-/* C code produced by gperf version 2.7.1 (19981006 egcs) */
+/* C code produced by gperf version 2.7 */
 /* Command-line: gperf -L C -F , 0, 0 -p -j1 -i 1 -g -o -t -G -N is_reserved_word -k1,3,$ ./c-parse.gperf  */
 /* Command-line: gperf -L C -F ', 0, 0' -p -j1 -i 1 -g -o -t -N is_reserved_word -k1,3,$ c-parse.gperf  */ 
 struct resword { const char *name; short token; enum rid rid; };

gcc/config/i386/i386.c

@@ -3614,7 +3614,6 @@ ix86_expand_move (mode, operands)
      rtx operands[];
 {
   int strict = (reload_in_progress || reload_completed);
-  int want_clobber = 0;
   rtx insn;
 
   if (flag_pic && mode == Pmode && symbolic_operand (operands[1], Pmode))
@@ -3653,24 +3652,9 @@ ix86_expand_move (mode, operands)
 		   && ! standard_80387_constant_p (operands[1]))
 	    operands[1] = validize_mem (force_const_mem (mode, operands[1]));
 	}
-      else
-	{
-	  /* Try to guess when a cc clobber on the move might be fruitful.  */
-	  if (!strict
-	      && GET_CODE (operands[0]) == REG
-	      && operands[1] == const0_rtx
-	      && !flag_peephole2)
-	    want_clobber = 1;
-	}
     }
 
   insn = gen_rtx_SET (VOIDmode, operands[0], operands[1]);
-  if (want_clobber)
-    {
-      rtx clob;
-      clob = gen_rtx_CLOBBER (VOIDmode, gen_rtx_REG (CCmode, FLAGS_REG));
-      insn = gen_rtx_PARALLEL (VOIDmode, gen_rtvec (2, insn, clob));
-    }
 
   emit_insn (insn);
 }

gcc/configure

@@ -1337,7 +1337,7 @@ else
 fi
 
 # Find some useful tools
-for ac_prog in mawk gawk nawk awk
+for ac_prog in gawk mawk nawk awk
 do
 # Extract the first word of "$ac_prog", so it can be a program name with args.
 set dummy $ac_prog; ac_word=$2