(zero_extendhisi2): Remove unneeded constraint.

(lu/stu): Use %0 instead of %1 in assembler insns.
(call_value): Add missing "=" in constraint.

From-SVN: r1513

gcc/config/rs6000/rs6000.md

@@ -97,7 +97,7 @@
   [(set_attr "type" "load,*")])
 
 (define_expand "zero_extendhisi2"
-  [(set (match_operand:SI 0 "gpc_reg_operand" "r")
+  [(set (match_operand:SI 0 "gpc_reg_operand" "")
 	(zero_extend:SI (match_operand:HI 1 "gpc_reg_operand" "")))]
   ""
   "")
@@ -2705,8 +2705,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   lux %3,%1,%2
-   lu %3,%2(%1)"
+   lux %3,%0,%2
+   lu %3,%2(%0)"
   [(set_attr "type" "load,load")])
 
 (define_insn ""
@@ -2717,8 +2717,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   stux %3,%1,%2
-   stu %3,%2(%1)")
+   stux %3,%0,%2
+   stu %3,%2(%0)")
 
 (define_insn ""
   [(set (match_operand:HI 3 "gpc_reg_operand" "=r,r")
@@ -2728,8 +2728,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   lhzux %3,%1,%2
-   lhzu %3,%2(%1)"
+   lhzux %3,%0,%2
+   lhzu %3,%2(%0)"
   [(set_attr "type" "load,load")])
 
 (define_insn ""
@@ -2741,8 +2741,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   lhzux %3,%1,%2
-   lhzu %3,%2(%1)"
+   lhzux %3,%0,%2
+   lhzu %3,%2(%0)"
   [(set_attr "type" "load,load")])
 
 (define_insn ""
@@ -2754,8 +2754,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   lhaux %3,%1,%2
-   lhau %3,%2(%1)"
+   lhaux %3,%0,%2
+   lhau %3,%2(%0)"
   [(set_attr "type" "load,load")])
 
 (define_insn ""
@@ -2766,8 +2766,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   sthux %3,%1,%2
-   sthu %3,%2(%1)"
+   sthux %3,%0,%2
+   sthu %3,%2(%0)"
   [(set_attr "type" "load,load")])
 
 (define_insn ""
@@ -2778,8 +2778,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   lbzux %3,%1,%2
-   lbzu %3,%2(%1)"
+   lbzux %3,%0,%2
+   lbzu %3,%2(%0)"
   [(set_attr "type" "load,load")])
 
 (define_insn ""
@@ -2791,8 +2791,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   lbzux %3,%1,%2
-   lbzu %3,%2(%1)"
+   lbzux %3,%0,%2
+   lbzu %3,%2(%0)"
   [(set_attr "type" "load,load")])
 
 (define_insn ""
@@ -2803,8 +2803,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   stbux %3,%1,%2
-   stbu %3,%2(%1)")
+   stbux %3,%0,%2
+   stbu %3,%2(%0)")
 
 (define_insn ""
   [(set (match_operand:SF 3 "gpc_reg_operand" "=f,f")
@@ -2814,8 +2814,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   lfsux %3,%1,%2
-   lfsu %3,%2(%1)"
+   lfsux %3,%0,%2
+   lfsu %3,%2(%0)"
   [(set_attr "type" "load,load")])
 
 (define_insn ""
@@ -2826,8 +2826,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   frsp %3,%3\;stfsux %3,%1,%2
-   frsp %3,%3\;stfsu %3,%2(%1)")
+   frsp %3,%3\;stfsux %3,%0,%2
+   frsp %3,%3\;stfsu %3,%2(%0)")
 
 (define_insn ""
   [(set (match_operand:DF 3 "gpc_reg_operand" "=f,f")
@@ -2837,8 +2837,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   lfdux %3,%1,%2
-   lfdu %3,%2(%1)"
+   lfdux %3,%0,%2
+   lfdu %3,%2(%0)"
   [(set_attr "type" "load,load")])
 
 (define_insn ""
@@ -2849,8 +2849,8 @@
 	(plus:SI (match_dup 1) (match_dup 2)))]
   ""
   "@
-   stfdux %3,%1,%2
-   stfdu %3,%2(%1)")
+   stfdux %3,%0,%2
+   stfdu %3,%2(%0)")
 
 ;; Next come insns related to the calling sequence.
 ;;
@@ -3005,7 +3005,7 @@
    bl %z0\;cror 15,15,15")
 
 (define_insn ""
-  [(set (match_operand 0 "" "fg,fg")
+  [(set (match_operand 0 "" "=fg,fg")
 	(call (mem:SI (match_operand:SI 1 "call_operand" "l,s"))
 	      (match_operand 2 "" "fg,fg")))
    (clobber (match_scratch:SI 3 "=l,l"))]