emit-rtl.c (try_split): Use a loop to search for NOTE_INSN_CALL_ARG_LOCATIONs.

gcc/
	* emit-rtl.c (try_split): Use a loop to search for
	NOTE_INSN_CALL_ARG_LOCATIONs.

gcc/testsuite/
	From Ryan Mansfield
	* gcc.dg/pr48826.c: New test.

From-SVN: r174401

gcc/ChangeLog

+2011-05-29  Richard Sandiford  <rdsandiford@googlemail.com>
+
+	* emit-rtl.c (try_split): Use a loop to search for
+	NOTE_INSN_CALL_ARG_LOCATIONs.
+
 2011-05-29  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/49217

gcc/emit-rtl.c

@@ -3494,16 +3494,15 @@ try_split (rtx pat, rtx trial, int last)
 	       we must move any following NOTE_INSN_CALL_ARG_LOCATION note
 	       so that it comes immediately after the new call.  */
 	    if (NEXT_INSN (insn))
-	      {
-		next = NEXT_INSN (trial);
-		if (next
-		    && NOTE_P (next)
-		    && NOTE_KIND (next) == NOTE_INSN_CALL_ARG_LOCATION)
+	      for (next = NEXT_INSN (trial);
+		   next && NOTE_P (next);
+		   next = NEXT_INSN (next))
+		if (NOTE_KIND (next) == NOTE_INSN_CALL_ARG_LOCATION)
 		  {
 		    remove_insn (next);
 		    add_insn_after (next, insn, NULL);
+		    break;
 		  }
-	      }
 	  }
     }
 

gcc/testsuite/ChangeLog

+2011-05-29  Richard Sandiford  <rdsandiford@googlemail.com>
+
+	From Ryan Mansfield
+	* gcc.dg/pr48826.c: New test.
+
 2011-05-29  Richard Guenther  <rguenther@suse.de>
 
 	PR tree-optimization/49217

gcc/testsuite/gcc.dg/pr48826.c

+/* { dg-options "-O -g -w" } */
+
+void bar (int *);
+
+void
+foo ()
+{
+  int *const pc = __builtin_return_address (0);
+  bar (pc);
+}