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; RUN: llc -march=x86-64 < %s
; DAGCombiner should fold this code in finite time.
; rdar://8606584
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-n8:16:32:64"
target triple = "x86_64-pc-linux-gnu"
define void @D() nounwind readnone {
bb.nph:
br label %while.cond
while.cond: ; preds = %while.cond, %bb.nph
%tmp6 = load i32* undef, align 4
%and = or i64 undef, undef
%conv11 = zext i32 undef to i64
%conv14 = zext i32 %tmp6 to i64
%shl15 = shl i64 %conv14, 1
%shl15.masked = and i64 %shl15, 4294967294
%and17 = or i64 %shl15.masked, %conv11
%add = add i64 %and17, 1
%xor = xor i64 %add, %and
%tmp20 = load i64* undef, align 8
%add21 = add i64 %xor, %tmp20
%conv22 = trunc i64 %add21 to i32
store i32 %conv22, i32* undef, align 4
br i1 false, label %while.end, label %while.cond
while.end: ; preds = %while.cond
ret void
}
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