re PR middle-end/42718 (FAIL: gcc.c-torture/compile/pr42559.c at -O1 and above)

	PR middle-end/42718
	* pa.md (movmemsi): Set align to one if zero.
	(movmemdi): Likewise.

From-SVN: r157614

gcc/ChangeLog

+2010-03-21  John David Anglin  <dave.anglin@nrc-cnrc.gc.ca>
+
+	PR middle-end/42718
+	* pa.md (movmemsi): Set align to one if zero.
+	(movmemdi): Likewise.
+
 2010-03-21  Richard Earnshaw  <rearnsha@arm.com>
 
 	PR target/42321

gcc/config/pa/pa.md

@@ -3097,7 +3097,7 @@
 
   size = INTVAL (operands[2]);
   align = INTVAL (operands[3]);
-  align = align > 4 ? 4 : align;
+  align = align > 4 ? 4 : (align ? align : 1);
 
   /* If size/alignment is large, then use the library routines.  */
   if (size / align > 16)
@@ -3285,7 +3285,7 @@
 
   size = INTVAL (operands[2]);
   align = INTVAL (operands[3]);
-  align = align > 8 ? 8 : align;
+  align = align > 8 ? 8 : (align ? align : 1);
 
   /* If size/alignment is large, then use the library routines.  */
   if (size / align > 16)