New test case. x86 isel was creating a cycle in the DAG.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@28477 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/CodeGen/X86/2006-05-25-CycleInDAG.ll b/test/CodeGen/X86/2006-05-25-CycleInDAG.ll
new file mode 100644 (file)
index 0000000..44deaeb
--- /dev/null
+++ b/test/CodeGen/X86/2006-05-25-CycleInDAG.ll
@@ -0,0 +1,21 @@
+; RUN: llvm-as < %s | llc -march=x86
+
+int %test() {
+       br bool false, label %cond_next33, label %cond_true12
+
+cond_true12:
+       ret int 0
+
+cond_next33:
+       %tmp44.i = call double %foo( double 0.000000e+00, int 32 )
+       %tmp61.i = load ubyte* null
+       %tmp61.i = cast ubyte %tmp61.i to int
+       %tmp58.i = or int 0, %tmp61.i
+       %tmp62.i = or int %tmp58.i, 0
+       %tmp62.i = cast int %tmp62.i to double
+       %tmp64.i = add double %tmp62.i, %tmp44.i
+       %tmp68.i = call double %foo( double %tmp64.i, int 0 )
+       ret int 0
+}
+
+declare double %foo(double, int)