Yet another hard testcase

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@10349 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Transforms/LICM/sink_phi_node_use.ll b/test/Transforms/LICM/sink_phi_node_use.ll
new file mode 100644 (file)
index 0000000..6335469
--- /dev/null
+++ b/test/Transforms/LICM/sink_phi_node_use.ll
@@ -0,0 +1,28 @@
+; RUN: llvm-as < %s | opt -licm | llvm-dis | grep -C1 add | grep preheader.loopexit: 
+
+implementation
+
+void %test() {
+loopentry.2.i:
+       br bool false, label %no_exit.1.i.preheader, label %loopentry.3.i.preheader
+
+no_exit.1.i.preheader:
+       br label %no_exit.1.i
+
+no_exit.1.i:
+       br bool false, label %return.i, label %endif.8.i
+
+endif.8.i:
+       %inc.1.i = add int 0, 1
+       br bool false, label %no_exit.1.i, label %loopentry.3.i.preheader.loopexit
+
+loopentry.3.i.preheader.loopexit:
+       br label %loopentry.3.i.preheader
+
+loopentry.3.i.preheader:
+       %arg_num.0.i.ph13000 = phi int [ 0, %loopentry.2.i ], [ %inc.1.i, %loopentry.3.i.preheader.loopexit ]
+       ret void
+
+return.i:
+       ret void
+}