diff --git a/gcc/ChangeLog b/gcc/ChangeLog
index 3888eb6c730..c542648423a 100644
--- a/gcc/ChangeLog
+++ b/gcc/ChangeLog
@@ -1,3 +1,8 @@
+2009-06-11  Richard Henderson  <rth@redhat.com>
+
+	* config/alpha/alpha.c (alpha_emit_setcc): Fix test for
+	when gen_lowpart is needed.
+
 2009-06-11  Richard Henderson  <rth@redhat.com>
 
 	* dwarf2out.c (def_cfa_1): Likewise for DW_CFA_cfa_offset.
diff --git a/gcc/config/alpha/alpha.c b/gcc/config/alpha/alpha.c
index 1803627c1f4..314c217246f 100644
--- a/gcc/config/alpha/alpha.c
+++ b/gcc/config/alpha/alpha.c
@@ -2623,7 +2623,7 @@ alpha_emit_setcc (rtx operands[], enum machine_mode cmp_mode)
       emit_insn (gen_rtx_SET (VOIDmode, tmp,
 			      gen_rtx_fmt_ee (cmp_code, cmp_mode, op0, op1)));
 
-      op0 = cmp_mode == DImode ? gen_lowpart (DImode, tmp) : tmp;
+      op0 = cmp_mode != DImode ? gen_lowpart (DImode, tmp) : tmp;
       op1 = const0_rtx;
     }