this testcase sent the dag combiner spinning into an infinite loop
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@25418 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/Generic/2005-01-18-SetUO-InfLoop.ll b/test/CodeGen/Generic/2005-01-18-SetUO-InfLoop.ll
new file mode 100644
index 0000000..072841d
--- /dev/null
+++ b/test/CodeGen/Generic/2005-01-18-SetUO-InfLoop.ll
@@ -0,0 +1,19 @@
+; RUN: llvm-as < %s | llc
+
+void %intersect_pixel() {
+entry:
+ %tmp125 = call bool %llvm.isunordered.f64( double 0.000000e+00, double 0.000000e+00 ) ; <bool> [#uses=1]
+ %tmp126 = or bool %tmp125, false ; <bool> [#uses=1]
+ %tmp126.not = xor bool %tmp126, true ; <bool> [#uses=1]
+ %brmerge1 = or bool %tmp126.not, false ; <bool> [#uses=1]
+ br bool %brmerge1, label %bb154, label %cond_false133
+
+cond_false133: ; preds = %entry
+ ret void
+
+bb154: ; preds = %entry
+ %tmp164 = seteq uint 0, 0 ; <bool> [#uses=0]
+ ret void
+}
+
+declare bool %llvm.isunordered.f64(double, double)