1 files changed, 30 insertions, 0 deletions
diff --git a/test/Analysis/ScalarEvolution/2008-07-12-UnneededSelect2.ll b/test/Analysis/ScalarEvolution/2008-07-12-UnneededSelect2.ll
new file mode 100644
index 0000000..1847665
--- /dev/null
+++ b/test/Analysis/ScalarEvolution/2008-07-12-UnneededSelect2.ll
@@ -0,0 +1,30 @@
+; RUN: opt < %s -analyze -scalar-evolution |& not grep smax
+; PR2070
+
+define i32 @a(i32 %x) nounwind  {
+entry:
+	icmp sgt i32 %x, 1		; <i1>:0 [#uses=1]
+	br i1 %0, label %bb.nph, label %bb2
+
+bb.nph:		; preds = %entry
+	br label %bb
+
+bb:		; preds = %bb1, %bb.nph
+	%z.02 = phi i32 [ %1, %bb1 ], [ 1, %bb.nph ]		; <i32> [#uses=1]
+	%i.01 = phi i32 [ %2, %bb1 ], [ 1, %bb.nph ]		; <i32> [#uses=2]
+	mul i32 %z.02, %i.01		; <i32>:1 [#uses=2]
+	add i32 %i.01, 1		; <i32>:2 [#uses=2]
+	br label %bb1
+
+bb1:		; preds = %bb
+	icmp slt i32 %2, %x		; <i1>:3 [#uses=1]
+	br i1 %3, label %bb, label %bb1.bb2_crit_edge
+
+bb1.bb2_crit_edge:		; preds = %bb1
+	%.lcssa = phi i32 [ %1, %bb1 ]		; <i32> [#uses=1]
+	br label %bb2
+
+bb2:		; preds = %bb1.bb2_crit_edge, %entry
+	%z.0.lcssa = phi i32 [ %.lcssa, %bb1.bb2_crit_edge ], [ 1, %entry ]		; <i32> [#uses=1]
+	ret i32 %z.0.lcssa
+}