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; RUN: opt -tailcallelim -S < %s 2>&1 | FileCheck %s
; CHECK: add nsw i32
; CHECK-NEXT: br label
; CHECK: add nsw i32
; CHECK-NEXT: br label
; CHECK-NOT: Uses remain when a value is destroyed
define i32 @test(i32 %n) {
entry:
%cmp = icmp slt i32 %n, 2
br i1 %cmp, label %if.then, label %if.else
if.then: ; preds = %entry
%v1 = add nsw i32 %n, -2
%call1 = tail call i32 @test(i32 %v1)
br label %return
if.else: ; preds = %entry
%v2 = add nsw i32 %n, 4
%call2 = tail call i32 @test(i32 %v2)
br label %return
return: ; preds = %if.end, %if.else
%retval = phi i32 [ %call1, %if.then ], [ %call2, %if.else ]
ret i32 %retval
}
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