Fix alignment on alloca's for parameters using ABIArgInfo::Expand.  



git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143658 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/align-param.c b/test/CodeGen/align-param.c
index 15a8c2a..8907f66 100644
--- a/test/CodeGen/align-param.c
+++ b/test/CodeGen/align-param.c
@@ -7,3 +7,12 @@
 }
 // CHECK: define i32 @test
 // CHECK: alloca i64, align 8
+
+
+// Make sure we honor the aligned attribute.
+struct X { int x,y,z,a; };
+int test2(struct X x __attribute((aligned(16)))) {
+  return x.z;
+}
+// CHECK: define i32 @test2
+// CHECK: alloca %struct.X, align 16