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/CFrontend/2002-02-14-EntryNodePreds.c b/test/CFrontend/2002-02-14-EntryNodePreds.c
new file mode 100644
index 0000000..f1e0151
--- /dev/null
+++ b/test/CFrontend/2002-02-14-EntryNodePreds.c
@@ -0,0 +1,37 @@
+// RUN: %llvmgcc -S %s -o - | llvm-as -f -o /dev/null
+
+/* GCC Used to generate code that contained a branch to the entry node of
+ * the do_merge function. This is illegal LLVM code. To fix this, GCC now
+ * inserts an entry node regardless of whether or not it has to insert allocas.
+ */
+
+struct edge_rec
+{
+ struct VERTEX *v;
+ struct edge_rec *next;
+ int wasseen;
+ int more_data;
+};
+
+typedef struct edge_rec *QUAD_EDGE;
+
+typedef struct {
+ QUAD_EDGE left, right;
+} EDGE_PAIR;
+
+struct EDGE_STACK {
+ int ptr;
+ QUAD_EDGE *elts;
+ int stack_size;
+};
+
+int do_merge(QUAD_EDGE ldo, QUAD_EDGE rdo) {
+ int lvalid;
+ QUAD_EDGE basel,rcand;
+ while (1) {
+ if (!lvalid) {
+ return (int)basel->next;
+ }
+ }
+}
+