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; RUN: opt < %s -loop-index-split -instcombine -indvars -disable-output
; PR4455
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"
declare i8* @fast_memcpy(i8*, i8*, i64)
define void @dvdsub_decode() nounwind {
entry: ; preds = %bb1
br label %LoopA
LoopA: ; preds = %LoopA, %entry
%x1.0.i17 = phi i32 [ %t0, %LoopA ], [ 0, %entry ] ; <i32> [#uses=2]
%t0 = add i32 %x1.0.i17, 1 ; <i32> [#uses=1]
br i1 undef, label %LoopA, label %middle
middle: ; preds = %LoopA
%t1 = sub i32 0, %x1.0.i17 ; <i32> [#uses=1]
%t2 = add i32 %t1, 1 ; <i32> [#uses=1]
br label %LoopB
LoopB: ; preds = %LoopB, %bb.nph.i27
%y.029.i = phi i32 [ 0, %middle ], [ %t7, %LoopB ] ; <i32> [#uses=2]
%t3 = mul i32 %y.029.i, %t2 ; <i32> [#uses=1]
%t4 = sext i32 %t3 to i64 ; <i64> [#uses=1]
%t5 = getelementptr i8* null, i64 %t4 ; <i8*> [#uses=1]
%t6 = call i8* @fast_memcpy(i8* %t5, i8* undef, i64 undef) nounwind ; <i8*> [#uses=0]
%t7 = add i32 %y.029.i, 1 ; <i32> [#uses=1]
br i1 undef, label %LoopB, label %exit
exit:
ret void
}
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