rs6000.md (movdf_hardfloat32): Revert previous patch.

        * rs6000.md (movdf_hardfloat32): Revert previous patch.
        Handle LO_SUM the same as offsettable in cases 1 and 2.
        * rs6000.c (find_addr_reg): Revert previous patch.

Co-Authored-By: Jeffrey A Law <law@cygnus.com>

From-SVN: r27752

gcc/ChangeLog

+Thu Jun 24 22:54:05 1999  David Edelsohn  <edelsohn@gnu.org>
+			  Jeff Law <law@cygnus.com>
+
+	* rs6000.md (movdf_hardfloat32): Revert previous patch.
+	Handle LO_SUM the same as offsettable in cases 1 and 2.
+	* rs6000.c (find_addr_reg): Revert previous patch.
+
 Thu Jun 24 22:43:12 1999  Philippe De Muyter  <phdm@macqel.be>
 
 	* system.h (strstr): New external function declaration.

gcc/config/rs6000/rs6000.c

@@ -5690,9 +5690,6 @@ struct rtx_def *
 find_addr_reg (addr)
      rtx addr;
 {
-  if (GET_CODE (addr) == LO_SUM)
-    addr = XEXP (addr, 0);
-
   while (GET_CODE (addr) == PLUS)
     {
       if (GET_CODE (XEXP (addr, 0)) == REG)

gcc/config/rs6000/rs6000.md

@@ -6327,7 +6327,9 @@
       else
 	return \"mr %0,%1\;mr %L0,%L1\";
     case 1:
-      if (offsettable_memref_p (operands[1]))
+      if (offsettable_memref_p (operands[1])
+	  || (GET_CODE (operands[1]) == MEM
+	      && GET_CODE (XEXP (operands[1], 0)) == LO_SUM))
 	{
 	  /* If the low-address word is used in the address, we must load
 	     it last.  Otherwise, load it first.  Note that we cannot have
@@ -6353,21 +6355,23 @@
 				 operands[1], 0))
 	    {
 	      output_asm_insn (\"{cal|la} %0,4(%0)\", &addreg);
-	      output_asm_insn (\"{l%X1|lwz%X1} %L0,%1\", operands);
+	      output_asm_insn (\"{lx|lwzx} %L0,%1\", operands);
 	      output_asm_insn (\"{cal|la} %0,-4(%0)\", &addreg);
-	      return \"{l%X1|lwz%X1} %0,%1\";
+	      return \"{lx|lwzx} %0,%1\";
 	    }
 	  else
 	    {
-	      output_asm_insn (\"{l%X1|lwz%X1} %0,%1\", operands);
+	      output_asm_insn (\"{lx|lwzx} %0,%1\", operands);
 	      output_asm_insn (\"{cal|la} %0,4(%0)\", &addreg);
-	      output_asm_insn (\"{l%X1|lwz%X1} %L0,%1\", operands);
+	      output_asm_insn (\"{lx|lwzx} %L0,%1\", operands);
 	      output_asm_insn (\"{cal|la} %0,-4(%0)\", &addreg);
 	      return \"\";
 	    }
 	}
     case 2:
-      if (offsettable_memref_p (operands[0]))
+      if (offsettable_memref_p (operands[0])
+	  || (GET_CODE (operands[0]) == MEM
+	      && GET_CODE (XEXP (operands[0], 0)) == LO_SUM))
 	return \"{st%U0|stw%U0} %1,%0\;{st|stw} %L1,%L0\";
       else
 	{
@@ -6378,9 +6382,9 @@
 	    abort ();
 
 	  addreg = find_addr_reg (XEXP (operands[0], 0));
-	  output_asm_insn (\"{st%X0|stw%X0} %1,%0\", operands);
+	  output_asm_insn (\"{stx|stwx} %1,%0\", operands);
 	  output_asm_insn (\"{cal|la} %0,4(%0)\", &addreg);
-	  output_asm_insn (\"{st%X0|stw%X0} %L1,%0\", operands);
+	  output_asm_insn (\"{stx|stwx} %L1,%0\", operands);
 	  output_asm_insn (\"{cal|la} %0,-4(%0)\", &addreg);
 	  return \"\";
 	}