It's not necessary to do rounding for alloca operations when the requested
alignment is equal to the stack alignment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@40004 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/C++Frontend/2005-02-11-AnonymousUnion.cpp b/test/C++Frontend/2005-02-11-AnonymousUnion.cpp
new file mode 100644
index 0000000..b0ff7e7
--- /dev/null
+++ b/test/C++Frontend/2005-02-11-AnonymousUnion.cpp
@@ -0,0 +1,32 @@
+// RUN: %llvmgxx %s -S -o -
+
+// Test anonymous union with members of the same size.
+int test1(float F) {
+ union {
+ float G;
+ int i;
+ };
+ G = F;
+ return i;
+}
+
+// test anonymous union with members of differing size.
+int test2(short F) {
+ volatile union {
+ short G;
+ int i;
+ };
+ G = F;
+ return i;
+}
+
+// Make sure that normal unions work. duh :)
+volatile union {
+ short S;
+ int i;
+} U;
+
+int test3(short s) {
+ U.S = s;
+ return U.i;
+}