1 files changed, 30 insertions, 0 deletions
diff --git a/test/Analysis/ScalarEvolution/avoid-infinite-recursion-0.ll b/test/Analysis/ScalarEvolution/avoid-infinite-recursion-0.ll
new file mode 100644
index 0000000..7eeb308
--- /dev/null
+++ b/test/Analysis/ScalarEvolution/avoid-infinite-recursion-0.ll
@@ -0,0 +1,30 @@
+; RUN: opt < %s -analyze -scalar-evolution
+; PR4537
+
+; ModuleID = 'b.bc'
+target datalayout = "e-p:64:64:64-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64-f32:32:32-f64:64:64-v64:64:64-v128:128:128-a0:0:64-s0:64:64-f80:128:128"
+target triple = "x86_64-unknown-linux-gnu"
+
+define i32 @test() {
+entry:
+	%0 = load i32** undef, align 8		; <i32*> [#uses=1]
+	%1 = ptrtoint i32* %0 to i64		; <i64> [#uses=1]
+	%2 = sub i64 undef, %1		; <i64> [#uses=1]
+	%3 = lshr i64 %2, 3		; <i64> [#uses=1]
+	%4 = trunc i64 %3 to i32		; <i32> [#uses=2]
+	br i1 undef, label %bb10, label %bb4.i
+
+bb4.i:		; preds = %bb4.i, %entry
+	%i.0.i6 = phi i32 [ %8, %bb4.i ], [ 0, %entry ]		; <i32> [#uses=2]
+	%5 = sub i32 %4, %i.0.i6		; <i32> [#uses=1]
+	%6 = sext i32 %5 to i64		; <i64> [#uses=1]
+	%7 = udiv i64 undef, %6		; <i64> [#uses=1]
+	%8 = add i32 %i.0.i6, 1		; <i32> [#uses=2]
+	%phitmp = icmp eq i64 %7, 0		; <i1> [#uses=1]
+	%.not.i = icmp sge i32 %8, %4		; <i1> [#uses=1]
+	%or.cond.i = or i1 %phitmp, %.not.i		; <i1> [#uses=1]
+	br i1 %or.cond.i, label %bb10, label %bb4.i
+
+bb10:		; preds = %bb4.i, %entry
+	unreachable
+}