Testcases for 54503. One derived from PR 2533, the

other from Python.

llvm-svn: 54505

1 files changed, 29 insertions, 0 deletions

diff --git a/llvm/test/FrontendC/2008-08-07-AlignPadding1.c b/llvm/test/FrontendC/2008-08-07-AlignPadding1.c
new file mode 100644
index 00000000000..7d7df4a8ad1
--- /dev/null
+++ b/llvm/test/FrontendC/2008-08-07-AlignPadding1.c
@@ -0,0 +1,29 @@
+/* RUN: %llvmgcc %s -m64 -S -o - -emit-llvm -O0 | grep zeroinitializer | count 6
+
+The FE must generate padding here both at the end of each PyG_Head and
+between array elements.  Reduced from Python. */
+
+typedef union _gc_head {
+  struct {
+    union _gc_head *gc_next;
+    union _gc_head *gc_prev;
+    long gc_refs;
+  } gc;
+  int dummy __attribute__((aligned(16)));
+} PyGC_Head;
+
+struct gc_generation {
+  PyGC_Head head;
+  int threshold;
+  int count;
+};
+
+#define GEN_HEAD(n) (&generations[n].head)
+
+/* linked lists of container objects */
+static struct gc_generation generations[3] = {
+        /* PyGC_Head,                           threshold,      count */
+        {{{GEN_HEAD(0), GEN_HEAD(0), 0}},       700,            0},
+        {{{GEN_HEAD(1), GEN_HEAD(1), 0}},       10,             0},
+        {{{GEN_HEAD(2), GEN_HEAD(2), 0}},       10,             0},
+};