; LLVM IR from tum-i4/obfuscation-benchmarks :: small-programs (1b-4-1-0-0-dc-2-1-1)

; Unoptimized IR (clang -disable-llvm-passes):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str = external hidden unnamed_addr constant [12 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main(i32 noundef %0, ptr noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 0, ptr %3, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store ptr %1, ptr %5, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #3
  store i32 0, ptr %7, align 4, !tbaa !5
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %16, %2
  %9 = load i32, ptr %6, align 4, !tbaa !5
  %10 = load i32, ptr %4, align 4, !tbaa !5
  %11 = icmp slt i32 %9, %10
  br i1 %11, label %12, label %19

12:                                               ; preds = %8
  %13 = load i32, ptr %6, align 4, !tbaa !5
  %14 = load i32, ptr %7, align 4, !tbaa !5
  %15 = add nsw i32 %14, %13
  store i32 %15, ptr %7, align 4, !tbaa !5
  br label %16

16:                                               ; preds = %12
  %17 = load i32, ptr %6, align 4, !tbaa !5
  %18 = add nsw i32 %17, 1
  store i32 %18, ptr %6, align 4, !tbaa !5
  br label %8, !llvm.loop !11

19:                                               ; preds = %8
  store i32 1, ptr %6, align 4, !tbaa !5
  br label %20

20:                                               ; preds = %33, %19
  %21 = load i32, ptr %6, align 4, !tbaa !5
  %22 = load ptr, ptr %5, align 8, !tbaa !9
  %23 = getelementptr inbounds ptr, ptr %22, i64 1
  %24 = load ptr, ptr %23, align 8, !tbaa !9
  %25 = getelementptr inbounds i8, ptr %24, i64 0
  %26 = load i8, ptr %25, align 1, !tbaa !13
  %27 = sext i8 %26 to i32
  %28 = icmp sle i32 %21, %27
  br i1 %28, label %29, label %36

29:                                               ; preds = %20
  %30 = load i32, ptr %7, align 4, !tbaa !5
  %31 = load i32, ptr %7, align 4, !tbaa !5
  %32 = add nsw i32 %31, %30
  store i32 %32, ptr %7, align 4, !tbaa !5
  br label %33

33:                                               ; preds = %29
  %34 = load i32, ptr %6, align 4, !tbaa !5
  %35 = add nsw i32 %34, 1
  store i32 %35, ptr %6, align 4, !tbaa !5
  br label %20, !llvm.loop !14

36:                                               ; preds = %20
  %37 = load i32, ptr %7, align 4, !tbaa !5
  %38 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %37)
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #3
  ret i32 0
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

declare i32 @printf(ptr noundef, ...) #2

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #1

attributes #0 = { nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #3 = { nounwind }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"any pointer", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !12}


; Optimized IR (opt -passes='default<O3>'):
target datalayout = "e-m:e-p270:32:32-p271:32:32-p272:64:64-i64:64-i128:128-f80:128-n8:16:32:64-S128"
target triple = "x86_64-unknown-linux-gnu"

@.str = external hidden unnamed_addr constant [12 x i8], align 1

; Function Attrs: nofree nounwind uwtable
define dso_local noundef i32 @main(i32 noundef %0, ptr nocapture noundef readonly %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %0, 0
  br i1 %3, label %.lr.ph.preheader, label %.preheader

.lr.ph.preheader:                                 ; preds = %2
  %4 = add nsw i32 %0, -1
  %5 = zext nneg i32 %4 to i33
  %6 = add nsw i32 %0, -2
  %7 = zext i32 %6 to i33
  %8 = mul i33 %5, %7
  %9 = lshr i33 %8, 1
  %10 = trunc nuw i33 %9 to i32
  %11 = add i32 %10, %0
  %12 = add i32 %11, -1
  br label %.preheader

.preheader:                                       ; preds = %.lr.ph.preheader, %2
  %.0.lcssa = phi i32 [ 0, %2 ], [ %12, %.lr.ph.preheader ]
  %13 = getelementptr inbounds i8, ptr %1, i64 8
  %14 = load ptr, ptr %13, align 8, !tbaa !5
  %15 = load i8, ptr %14, align 1, !tbaa !9
  %.not14 = icmp slt i8 %15, 1
  br i1 %.not14, label %._crit_edge, label %.lr.ph17.preheader

.lr.ph17.preheader:                               ; preds = %.preheader
  %16 = zext nneg i8 %15 to i32
  %xtraiter = and i32 %16, 7
  %17 = icmp ult i8 %15, 8
  br i1 %17, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph17.preheader.new

.lr.ph17.preheader.new:                           ; preds = %.lr.ph17.preheader
  %unroll_iter = and i32 %16, 120
  br label %.lr.ph17

.lr.ph17:                                         ; preds = %.lr.ph17, %.lr.ph17.preheader.new
  %.116 = phi i32 [ %.0.lcssa, %.lr.ph17.preheader.new ], [ %18, %.lr.ph17 ]
  %niter = phi i32 [ 0, %.lr.ph17.preheader.new ], [ %niter.next.7, %.lr.ph17 ]
  %18 = shl i32 %.116, 8
  %niter.next.7 = add i32 %niter, 8
  %niter.ncmp.7 = icmp eq i32 %niter.next.7, %unroll_iter
  br i1 %niter.ncmp.7, label %._crit_edge.loopexit.unr-lcssa, label %.lr.ph17, !llvm.loop !10

._crit_edge.loopexit.unr-lcssa:                   ; preds = %.lr.ph17, %.lr.ph17.preheader
  %.lcssa.ph = phi i32 [ poison, %.lr.ph17.preheader ], [ %18, %.lr.ph17 ]
  %.116.unr = phi i32 [ %.0.lcssa, %.lr.ph17.preheader ], [ %18, %.lr.ph17 ]
  %lcmp.mod.not = icmp eq i32 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge, label %.lr.ph17.epil

.lr.ph17.epil:                                    ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph17.epil
  %.116.epil = phi i32 [ %19, %.lr.ph17.epil ], [ %.116.unr, %._crit_edge.loopexit.unr-lcssa ]
  %epil.iter = phi i32 [ %epil.iter.next, %.lr.ph17.epil ], [ 0, %._crit_edge.loopexit.unr-lcssa ]
  %19 = shl nsw i32 %.116.epil, 1
  %epil.iter.next = add i32 %epil.iter, 1
  %epil.iter.cmp.not = icmp eq i32 %epil.iter.next, %xtraiter
  br i1 %epil.iter.cmp.not, label %._crit_edge, label %.lr.ph17.epil, !llvm.loop !12

._crit_edge:                                      ; preds = %._crit_edge.loopexit.unr-lcssa, %.lr.ph17.epil, %.preheader
  %.1.lcssa = phi i32 [ %.0.lcssa, %.preheader ], [ %.lcssa.ph, %._crit_edge.loopexit.unr-lcssa ], [ %19, %.lr.ph17.epil ]
  %20 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %.1.lcssa)
  ret i32 0
}

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #1

attributes #0 = { nofree nounwind uwtable "min-legal-vector-width"="0" "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }
attributes #1 = { nofree nounwind "no-trapping-math"="true" "stack-protector-buffer-size"="8" "target-cpu"="x86-64" "target-features"="+cmov,+cx8,+fxsr,+mmx,+sse,+sse2,+x87" "tune-cpu"="generic" }

!llvm.module.flags = !{!0, !1, !2, !3}
!llvm.ident = !{!4}

!0 = !{i32 1, !"wchar_size", i32 4}
!1 = !{i32 8, !"PIC Level", i32 2}
!2 = !{i32 7, !"PIE Level", i32 2}
!3 = !{i32 7, !"uwtable", i32 2}
!4 = !{!"clang version 19.1.0 (git@github.com:llvm/llvm-project.git a4bf6cd7cfb1a1421ba92bca9d017b49936c55e4)"}
!5 = !{!6, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!7, !7, i64 0}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.unroll.disable"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass