i386.md: Remove redundant integer push patterns.

        * i386.md: Remove redundant integer push patterns.
        Don't bother checking for TARGET_PUSH_MEMORY when
        pushing constants or registers.

From-SVN: r17401

gcc/ChangeLog

+Sat Jan 17 23:22:59 1998  John Wehle  (john@feith.com)
+
+	* i386.md: Remove redundant integer push patterns.
+	Don't bother checking for TARGET_PUSH_MEMORY when
+	pushing constants or registers.
+
 Sat Jan 17 22:35:39 1998  Mumit Khan <khan@xraylith.wisc.edu>
 			  J.J VanderHeijden <J.J.vanderHeijden@student.utwente.nl>
 	

gcc/config/i386/i386.md

@@ -834,23 +834,16 @@
 
 (define_insn ""
   [(set (match_operand:SI 0 "push_operand" "=<")
-	(match_operand:SI 1 "general_operand" "g"))]
-  "TARGET_PUSH_MEMORY"
-  "push%L0 %1")
-
-;; If not a 386, it is faster to move MEM to a REG and then push, rather than
-;; push MEM directly.
-
-(define_insn ""
-  [(set (match_operand:SI 0 "push_operand" "=<")
 	(match_operand:SI 1 "nonmemory_operand" "ri"))]
-  "!TARGET_PUSH_MEMORY && TARGET_MOVE"
+  ""
   "push%L0 %1")
 
+;; On a 386, it is faster to push MEM directly.
+
 (define_insn ""
   [(set (match_operand:SI 0 "push_operand" "=<")
-	(match_operand:SI 1 "nonmemory_operand" "ri"))]
-  "!TARGET_PUSH_MEMORY && !TARGET_MOVE"
+	(match_operand:SI 1 "memory_operand" "m"))]
+  "TARGET_PUSH_MEMORY"
   "push%L0 %1")
 
 ;; General case of fullword move.
@@ -911,20 +904,14 @@
 
 (define_insn ""
   [(set (match_operand:HI 0 "push_operand" "=<")
-	(match_operand:HI 1 "general_operand" "g"))]
-  "TARGET_PUSH_MEMORY"
-  "push%W0 %1")
-
-(define_insn ""
-  [(set (match_operand:HI 0 "push_operand" "=<")
 	(match_operand:HI 1 "nonmemory_operand" "ri"))]
-  "!TARGET_PUSH_MEMORY && TARGET_MOVE"
+  ""
   "push%W0 %1")
 
 (define_insn ""
   [(set (match_operand:HI 0 "push_operand" "=<")
-	(match_operand:HI 1 "nonmemory_operand" "ri"))]
-  "!TARGET_PUSH_MEMORY && !TARGET_MOVE"
+	(match_operand:HI 1 "memory_operand" "m"))]
+  "TARGET_PUSH_MEMORY"
   "push%W0 %1")
 
 ;; On i486, an incl and movl are both faster than incw and movw.
@@ -1038,22 +1025,12 @@
   [(set (match_operand:QI 0 "push_operand" "=<")
 	(match_operand:QI 1 "const_int_operand" "n"))]
   ""
-  "* return AS1 (push%W0,%1);")
-
-(define_insn ""
-  [(set (match_operand:QI 0 "push_operand" "=<")
-	(match_operand:QI 1 "register_operand" "q"))]
-  "!TARGET_MOVE"
-  "*
-{
-  operands[1] = gen_rtx (REG, HImode, REGNO (operands[1]));
-  return AS1 (push%W0,%1);
-}")
+  "push%W0,%1")
 
 (define_insn ""
   [(set (match_operand:QI 0 "push_operand" "=<")
 	(match_operand:QI 1 "register_operand" "q"))]
-  "TARGET_MOVE"
+  ""
   "*
 {
   operands[1] = gen_rtx (REG, HImode, REGNO (operands[1]));