Fix PR 40482 2009-06-19 Ramana Radhakrishnan <ramana.radhakrishnan@arm.com>

Fix PR 40482
2009-06-19  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

	    PR target/40482
	    * config/arm/arm.c (thumb_shiftable_const): Truncate val to 
	    32 bits.
	    * config/arm/arm.md: Likewise.

2009-06-19  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>

	    PR target/40482
	    * gcc.target/arm/pr40482.c: New test.

From-SVN: r148728

gcc/ChangeLog

+2009-06-19  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
+
+	PR target/40482
+	* config/arm/arm.c (thumb_shiftable_const): Truncate val to 
+	32 bits.
+	* config/arm/arm.md: Likewise.
+
 2009-06-19  Ian Lance Taylor  <ian@airs.com>
 
 	* tree-cfg.c (gimple_redirect_edge_and_branch): Change ERROR_MARK

gcc/config/arm/arm.c

@@ -17515,6 +17515,7 @@ thumb_shiftable_const (unsigned HOST_WIDE_INT val)
   unsigned HOST_WIDE_INT mask = 0xff;
   int i;
 
+  val = val & (unsigned HOST_WIDE_INT)0xffffffffu;
   if (val == 0) /* XXX */
     return 0;
 

gcc/config/arm/arm.md

@@ -5166,7 +5166,7 @@
    (set (match_dup 0) (ashift:SI (match_dup 0) (match_dup 2)))]
   "
   {
-    unsigned HOST_WIDE_INT val = INTVAL (operands[1]);
+    unsigned HOST_WIDE_INT val = INTVAL (operands[1]) & 0xffffffffu;
     unsigned HOST_WIDE_INT mask = 0xff;
     int i;
     

gcc/testsuite/ChangeLog

+2009-06-19  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
+
+	PR target/40482
+	* gcc.target/arm/pr40482.c: New test.
+	
 2009-06-19  Ian Lance Taylor  <iant@google.com>
 
 	* gcc.dg/Wcxx-compat-18.c: New testcase.

gcc/testsuite/gcc.target/arm/pr40482.c

+/* { dg-options "-mthumb -Os" }  */
+/* { dg-final { scan-assembler-not "ldr" } } */
+
+unsigned int foo (unsigned int i )
+{
+  return i | 0xff000000;
+}