re PR target/35498 (libgomp/testsuite/libgomp.c/atomic-3.c fails on ppc-linux)

	PR target/35498
	* config/rs6000/rs6000.c (rs6000_expand_compare_and_swapqhi): Shift
	wdst back after sync_compare_and_swapqhi_internal.

From-SVN: r133024

gcc/ChangeLog

+2008-03-08  Jakub Jelinek  <jakub@redhat.com>
+
+	PR target/35498
+	* config/rs6000/rs6000.c (rs6000_expand_compare_and_swapqhi): Shift
+	wdst back after sync_compare_and_swapqhi_internal.
+
 2008-03-08  Uros Bizjak  <ubizjak@gmail.com>
 
 	PR target/22152

gcc/config/rs6000/rs6000.c

@@ -13903,6 +13903,9 @@ rs6000_expand_compare_and_swapqhi (rtx dst, rtx mem, rtx oldval, rtx newval)
   emit_insn (gen_sync_compare_and_swapqhi_internal (wdst, mask,
 						    oldval, newval, mem));
 
+  /* Shift the result back.  */
+  emit_insn (gen_lshrsi3 (wdst, wdst, shift));
+
   emit_move_insn (dst, gen_lowpart (mode, wdst));
 }