Enable parameter passing test for x86_64.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@64195 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/parameter-passing.c b/test/CodeGen/parameter-passing.c
index 5cc5e47..f9ff8a8 100644
--- a/test/CodeGen/parameter-passing.c
+++ b/test/CodeGen/parameter-passing.c
@@ -8,9 +8,8 @@
 // RUN: clang %s -triple i386-unknown-unknown -O3 -emit-llvm -o %t &&
 // RUN: not grep '@g0' %t &&
 
-// FIXME: Enable once PR3489 is fixed.
-// RUNX: clang %s -triple x86_64-unknown-unknown -O3 -emit-llvm -o %t &&
-// RUNX: not grep '@g0' %t &&
+// RUN: clang %s -triple x86_64-unknown-unknown -O3 -emit-llvm -o %t &&
+// RUN: not grep '@g0' %t &&
 
 // RUN: clang %s -triple ppc-unknown-unknown -O3 -emit-llvm -o %t &&
 // RUN: not grep '@g0' %t &&