File: 2008-08-04-IVOverflow.ll

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llvm 2.6-9.1
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; RUN: llvm-as < %s | opt -analyze -scalar-evolution -disable-output \
; RUN:   -scalar-evolution-max-iterations=0 | grep -F "Exits: 20028"
; PR2621

define i32 @a() nounwind  {
entry:
	br label %bb1

bb:
	trunc i32 %i.0 to i16
	add i16 %0, %x16.0
	add i32 %i.0, 1
	br label %bb1

bb1:
	%i.0 = phi i32 [ 0, %entry ], [ %2, %bb ]
	%x16.0 = phi i16 [ 0, %entry ], [ %1, %bb ]
	icmp ult i32 %i.0, 888888
	br i1 %3, label %bb, label %bb2

bb2:
	zext i16 %x16.0 to i32
	ret i32 %4
}