Remove unneeded tests on HOST_BITS_PER_INT from some extra conditions.

Use low_32_bit_operand for (plus:DI (zero_extend:DI ..) ..) cases.

From-SVN: r9080

gcc/config/rs6000/rs6000.md

@@ -3135,7 +3135,7 @@
    (set (match_operand:DF 0 "gpc_reg_operand" "")
 	(minus:DF (subreg:DF (match_dup 2) 0)
 		  (match_dup 5)))]
-  "! TARGET_POWERPC64 && (HOST_BITS_PER_INT == BITS_PER_WORD) && TARGET_HARD_FLOAT"
+  "! TARGET_POWERPC64"
   "
 {
   operands[2] = gen_reg_rtx (DImode);
@@ -3152,7 +3152,7 @@
    (set (match_operand:DF 0 "gpc_reg_operand" "")
 	(minus:DF (subreg:DF (match_dup 2) 0)
 		  (match_dup 4)))]
-  "! TARGET_POWERPC64 && (HOST_BITS_PER_INT == BITS_PER_WORD) && TARGET_HARD_FLOAT"
+  "! TARGET_POWERPC64"
   "
 {
   operands[2] = gen_reg_rtx (DImode);
@@ -3166,10 +3166,8 @@
 	(plus:DI (zero_extend:DI
 		  (xor:SI (match_operand:SI 1 "gpc_reg_operand" "")
 			  (match_operand:SI 2 "logical_operand" "")))
-		 (match_operand:DI 3 "immediate_operand" "")))]
-  "reload_completed && HOST_BITS_PER_INT == BITS_PER_WORD
-   && GET_CODE (operands[3]) == CONST_DOUBLE
-   && CONST_DOUBLE_LOW (operands[3]) == 0"
+		 (match_operand:DI 3 "low_32_bit_operand" "")))]
+  "reload_completed"
   [(set (match_dup 6) (xor:SI (match_dup 1) (match_dup 2)))
    (set (match_dup 4) (match_dup 5))]
   "
@@ -3183,20 +3181,16 @@
 	(plus:DI (zero_extend:DI
 		  (xor:SI (match_operand:SI 1 "gpc_reg_operand" "%r")
 			  (match_operand:SI 2 "logical_operand" "rKJ")))
-		 (match_operand:DI 3 "immediate_operand" "n")))]
-  "HOST_BITS_PER_INT == BITS_PER_WORD
-   && GET_CODE (operands[3]) == CONST_DOUBLE
-   && CONST_DOUBLE_LOW (operands[3]) == 0"
+		 (match_operand:DI 3 "low_32_bit_operand" "n")))]
+  ""
   "#"
   [(set_attr "length" "8")])
   
 (define_split
   [(set (match_operand:DI 0 "gpc_reg_operand" "=")
 	(plus:DI (zero_extend:DI (match_operand:SI 1 "gpc_reg_operand" ""))
-		 (match_operand:DI 2 "immediate_operand" "")))]
-  "reload_completed && HOST_BITS_PER_INT == BITS_PER_WORD
-   && GET_CODE (operands[2]) == CONST_DOUBLE
-   && CONST_DOUBLE_LOW (operands[2]) == 0"
+		 (match_operand:DI 2 "low_32_bit_operand" "")))]
+  "reload_completed"
   [(set (match_dup 3) (match_dup 4))
    (set (match_dup 5) (match_dup 1))]
   "
@@ -3222,10 +3216,8 @@
 (define_insn ""
   [(set (match_operand:DI 0 "gpc_reg_operand" "=r")
 	(plus:DI (zero_extend:DI (match_operand:SI 1 "gpc_reg_operand" "r"))
-		 (match_operand:DI 2 "immediate_operand" "n")))]
-  "HOST_BITS_PER_INT == BITS_PER_WORD
-   && GET_CODE (operands[2]) == CONST_DOUBLE
-   && CONST_DOUBLE_LOW (operands[2]) == 0"
+		 (match_operand:DI 2 "low_32_bit_operand" "n")))]
+  ""
   "#"
   [(set_attr "length" "8")])