(parallel inc and branch-if-zero/nonzero): Add two new pattern variants.

(parallel inc and branch-if-zero/nonzero): Add two
new pattern variants.  Change incrementing pattern to use incl/jnz.

From-SVN: r13104

gcc/config/i386/i386.md

@@ -5774,6 +5774,40 @@
 (define_insn ""
   [(set (pc)
 	(if_then_else (ne (match_operand:SI 0 "general_operand" "g")
+			  (const_int 1))
+		      (label_ref (match_operand 1 "" ""))
+		      (pc)))
+   (set (match_dup 0)
+	(plus:SI (match_dup 0)
+		 (const_int -1)))]
+  ""
+  "*
+{
+  operands[2] = const1_rtx;
+  output_asm_insn (AS1 (dec%L0,%0), operands);
+  return \"jnz %l1\";
+}")
+
+(define_insn ""
+  [(set (pc)
+	(if_then_else (eq (match_operand:SI 0 "general_operand" "g")
+			  (const_int 1))
+		      (label_ref (match_operand 1 "" ""))
+		      (pc)))
+   (set (match_dup 0)
+	(plus:SI (match_dup 0)
+		 (const_int -1)))]
+  ""
+  "*
+{
+  operands[2] = const1_rtx;
+  output_asm_insn (AS1 (dec%L0,%0), operands);
+  return \"jz %l1\";
+}")
+
+(define_insn ""
+  [(set (pc)
+	(if_then_else (ne (match_operand:SI 0 "general_operand" "g")
 			  (const_int -1))
 		      (label_ref (match_operand 1 "" ""))
 		      (pc)))
@@ -5784,8 +5818,8 @@
   "*
 {
   operands[2] = const1_rtx;
-  output_asm_insn (AS2 (add%L0,%2,%0), operands);
-  return \"jnc %l1\";
+  output_asm_insn (AS1 (inc%L0,%0), operands);
+  return \"jnz %l1\";
 }")
 
 (define_insn ""
@@ -5801,8 +5835,8 @@
   "*
 {
   operands[2] = const1_rtx;
-  output_asm_insn (AS2 (add%L0,%2,%0), operands);
-  return \"jc %l1\";
+  output_asm_insn (AS1 (inc%L0,%0), operands);
+  return \"jz %l1\";
 }")
 
 ;; Implement switch statements when generating PIC code.  Switches are