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1 ; RUN: opt < %s -indvars -adce -simplifycfg -S | FileCheck %s
2 ; PR1598
3 
4 ; CHECK: icmp s
5 
6 define i32 @f(i32 %a, i32 %b, i32 %x, i32 %y) {
7 entry:
8 	%tmp3 = icmp eq i32 %a, %b		; <i1> [#uses=1]
9 	br i1 %tmp3, label %return, label %bb
10 
11 bb:		; preds = %bb, %entry
12 	%x_addr.0 = phi i32 [ %tmp6, %bb ], [ %x, %entry ]		; <i32> [#uses=1]
13 	%tmp6 = add i32 %x_addr.0, 1		; <i32> [#uses=3]
14 	%tmp9 = icmp slt i32 %tmp6, %y		; <i1> [#uses=1]
15 	br i1 %tmp9, label %bb, label %return
16 
17 return:		; preds = %bb, %entry
18 	%x_addr.1 = phi i32 [ %x, %entry ], [ %tmp6, %bb ]		; <i32> [#uses=1]
19 	ret i32 %x_addr.1
20 }
21