1 files changed, 18 insertions, 0 deletions
diff --git a/test/Analysis/ScalarEvolution/2007-08-06-MisinterpretBranch.ll b/test/Analysis/ScalarEvolution/2007-08-06-MisinterpretBranch.ll
new file mode 100644
index 0000000..e3393d5
--- /dev/null
+++ b/test/Analysis/ScalarEvolution/2007-08-06-MisinterpretBranch.ll
@@ -0,0 +1,18 @@
+; RUN: llvm-as < %s | opt -indvars -adce -simplifycfg | llvm-dis | grep "icmp s"
+; PR1598
+
+define i32 @f(i32 %a, i32 %b, i32 %x, i32 %y) {
+entry:
+	%tmp3 = icmp eq i32 %a, %b		; <i1> [#uses=1]
+	br i1 %tmp3, label %return, label %bb
+
+bb:		; preds = %bb, %entry
+	%x_addr.0 = phi i32 [ %tmp6, %bb ], [ %x, %entry ]		; <i32> [#uses=1]
+	%tmp6 = add i32 %x_addr.0, 1		; <i32> [#uses=3]
+	%tmp9 = icmp slt i32 %tmp6, %y		; <i1> [#uses=1]
+	br i1 %tmp9, label %bb, label %return
+
+return:		; preds = %bb, %entry
+	%x_addr.1 = phi i32 [ %x, %entry ], [ %tmp6, %bb ]		; <i32> [#uses=1]
+	ret i32 %x_addr.1
+}