1; RUN: opt < %s -analyze -enable-new-pm=0 -scalar-evolution
2; RUN: opt < %s -disable-output -scalar-evolution
3; PR4537
4
5; ModuleID = 'b.bc'
6target 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"
7target triple = "x86_64-unknown-linux-gnu"
8
9define i32 @test() {
10entry:
11	%0 = load i32*, i32** undef, align 8		; <i32*> [#uses=1]
12	%1 = ptrtoint i32* %0 to i64		; <i64> [#uses=1]
13	%2 = sub i64 undef, %1		; <i64> [#uses=1]
14	%3 = lshr i64 %2, 3		; <i64> [#uses=1]
15	%4 = trunc i64 %3 to i32		; <i32> [#uses=2]
16	br i1 undef, label %bb10, label %bb4.i
17
18bb4.i:		; preds = %bb4.i, %entry
19	%i.0.i6 = phi i32 [ %8, %bb4.i ], [ 0, %entry ]		; <i32> [#uses=2]
20	%5 = sub i32 %4, %i.0.i6		; <i32> [#uses=1]
21	%6 = sext i32 %5 to i64		; <i64> [#uses=1]
22	%7 = udiv i64 undef, %6		; <i64> [#uses=1]
23	%8 = add i32 %i.0.i6, 1		; <i32> [#uses=2]
24	%phitmp = icmp eq i64 %7, 0		; <i1> [#uses=1]
25	%.not.i = icmp sge i32 %8, %4		; <i1> [#uses=1]
26	%or.cond.i = or i1 %phitmp, %.not.i		; <i1> [#uses=1]
27	br i1 %or.cond.i, label %bb10, label %bb4.i
28
29bb10:		; preds = %bb4.i, %entry
30	unreachable
31}
32