rs6000.md (bswapdi 2nd splitter): Don't swap words twice for little-endian.

	* config/rs6000/rs6000.md (bswapdi 2nd splitter): Don't swap words
	twice for little-endian.
	(ashrdi3_no_power, ashrdi3): Support little-endian.

From-SVN: r198618

gcc/ChangeLog

+2013-05-06  Alan Modra  <amodra@gmail.com>
+
+	* config/rs6000/rs6000.md (bswapdi 2nd splitter): Don't swap words
+	twice for little-endian.
+	(ashrdi3_no_power, ashrdi3): Support little-endian.
+
 2013-05-06  Oleg Endo  <olegendo@gcc.gnu.org>
 
 	PR target/55303

gcc/config/rs6000/rs6000.md

@@ -2329,16 +2329,14 @@
     {
       word_high = change_address (dest, SImode, addr1);
       word_low  = change_address (dest, SImode, addr2);
-      emit_insn (gen_bswapsi2 (word_high, src_si));
-      emit_insn (gen_bswapsi2 (word_low, op3_si));
     }
   else
     {
       word_high = change_address (dest, SImode, addr2);
       word_low  = change_address (dest, SImode, addr1);
-      emit_insn (gen_bswapsi2 (word_low, src_si));
-      emit_insn (gen_bswapsi2 (word_high, op3_si));
     }
+  emit_insn (gen_bswapsi2 (word_high, src_si));
+  emit_insn (gen_bswapsi2 (word_low, op3_si));
 }")
 
 (define_split
@@ -6634,10 +6632,25 @@
   [(set (match_operand:DI 0 "gpc_reg_operand" "=&r,&r")
 	(ashiftrt:DI (match_operand:DI 1 "gpc_reg_operand" "r,r")
 		     (match_operand:SI 2 "const_int_operand" "M,i")))]
-  "TARGET_32BIT && !TARGET_POWERPC64 && WORDS_BIG_ENDIAN"
-  "@
-   srawi %0,%1,31\;srawi %L0,%1,%h2
-   srwi %L0,%L1,%h2\;insrwi %L0,%1,%h2,0\;srawi %0,%1,%h2"
+  "!TARGET_POWERPC64"
+  "*
+{
+  switch (which_alternative)
+    {
+    default:
+      gcc_unreachable ();
+    case 0:
+      if (WORDS_BIG_ENDIAN)
+        return \"srawi %0,%1,31\;srawi %L0,%1,%h2\";
+      else
+        return \"srawi %L0,%L1,31\;srawi %0,%L1,%h2\";
+    case 1:
+      if (WORDS_BIG_ENDIAN)
+	return \"srwi %L0,%L1,%h2\;insrwi %L0,%1,%h2,0\;srawi %0,%1,%h2\";
+      else
+	return \"srwi %0,%1,%h2\;insrwi %0,%L1,%h2,0\;srawi %L0,%L1,%h2\";
+    }
+}"
   [(set_attr "type" "two,three")
    (set_attr "length" "8,12")])
 
@@ -7734,13 +7747,12 @@
   [(set (match_operand:DI 0 "gpc_reg_operand" "")
 	(ashiftrt:DI (match_operand:DI 1 "gpc_reg_operand" "")
 		     (match_operand:SI 2 "reg_or_cint_operand" "")))]
-  "WORDS_BIG_ENDIAN"
+  ""
   "
 {
   if (TARGET_POWERPC64)
     ;
-  else if (TARGET_32BIT && GET_CODE (operands[2]) == CONST_INT
-	   && WORDS_BIG_ENDIAN)
+  else if (GET_CODE (operands[2]) == CONST_INT)
     {
       emit_insn (gen_ashrdi3_no_power (operands[0], operands[1], operands[2]));
       DONE;