; LLVM IR from tum-i4/obfuscation-benchmarks :: small-programs (16b-1-2-0-0-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
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  %11 = alloca ptr, align 8
  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
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  store i32 0, ptr %8, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  %12 = load ptr, ptr %5, align 8, !tbaa !9
  %13 = getelementptr inbounds ptr, ptr %12, i64 1
  %14 = load ptr, ptr %13, align 8, !tbaa !9
  store ptr %14, ptr %9, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %11) #3
  store i32 0, ptr %6, align 4, !tbaa !5
  br label %15

15:                                               ; preds = %40, %2
  %16 = load i32, ptr %6, align 4, !tbaa !5
  %17 = load ptr, ptr %5, align 8, !tbaa !9
  %18 = getelementptr inbounds ptr, ptr %17, i64 1
  %19 = load ptr, ptr %18, align 8, !tbaa !9
  %20 = getelementptr inbounds i8, ptr %19, i64 0
  %21 = load i8, ptr %20, align 1, !tbaa !11
  %22 = sext i8 %21 to i32
  %23 = icmp slt i32 %16, %22
  br i1 %23, label %24, label %43

24:                                               ; preds = %15
  %25 = load ptr, ptr %9, align 8, !tbaa !9
  store ptr %25, ptr %11, align 8, !tbaa !9
  br label %26

26:                                               ; preds = %36, %24
  %27 = load ptr, ptr %11, align 8, !tbaa !9
  %28 = load i8, ptr %27, align 1, !tbaa !11
  %29 = icmp ne i8 %28, 0
  br i1 %29, label %30, label %39

30:                                               ; preds = %26
  %31 = load ptr, ptr %11, align 8, !tbaa !9
  %32 = load i8, ptr %31, align 1, !tbaa !11
  %33 = sext i8 %32 to i32
  %34 = load i32, ptr %8, align 4, !tbaa !5
  %35 = add nsw i32 %34, %33
  store i32 %35, ptr %8, align 4, !tbaa !5
  br label %36

36:                                               ; preds = %30
  %37 = load ptr, ptr %11, align 8, !tbaa !9
  %38 = getelementptr inbounds i8, ptr %37, i32 1
  store ptr %38, ptr %11, align 8, !tbaa !9
  br label %26, !llvm.loop !12

39:                                               ; preds = %26
  br label %40

40:                                               ; preds = %39
  %41 = load i32, ptr %6, align 4, !tbaa !5
  %42 = add nsw i32 %41, 1
  store i32 %42, ptr %6, align 4, !tbaa !5
  br label %15, !llvm.loop !14

43:                                               ; preds = %15
  %44 = load i32, ptr %8, align 4, !tbaa !5
  %45 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %44)
  call void @llvm.lifetime.end.p0(i64 8, ptr %11) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %10) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  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 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}
!14 = distinct !{!14, !13}


; 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 = getelementptr inbounds i8, ptr %1, i64 8
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = load i8, ptr %4, align 1, !tbaa !9
  %6 = sext i8 %5 to i32
  %7 = icmp sgt i8 %5, 0
  br i1 %7, label %.preheader.preheader, label %._crit_edge17

.preheader.preheader:                             ; preds = %2
  %xtraiter = and i32 %6, 1
  %8 = icmp eq i8 %5, 1
  br i1 %8, label %._crit_edge17.loopexit.unr-lcssa, label %.preheader.preheader.new

.preheader.preheader.new:                         ; preds = %.preheader.preheader
  %unroll_iter = and i32 %6, 126
  br label %.preheader

.preheader:                                       ; preds = %._crit_edge.1, %.preheader.preheader.new
  %.01015 = phi i32 [ 0, %.preheader.preheader.new ], [ %16, %._crit_edge.1 ]
  %niter = phi i32 [ 0, %.preheader.preheader.new ], [ %niter.next.1, %._crit_edge.1 ]
  br label %9

9:                                                ; preds = %.preheader, %9
  %.014 = phi ptr [ %4, %.preheader ], [ %13, %9 ]
  %.113 = phi i32 [ %.01015, %.preheader ], [ %12, %9 ]
  %10 = phi i8 [ %5, %.preheader ], [ %.pr, %9 ]
  %11 = sext i8 %10 to i32
  %12 = add nsw i32 %.113, %11
  %13 = getelementptr inbounds i8, ptr %.014, i64 1
  %.pr = load i8, ptr %13, align 1, !tbaa !9
  %.not = icmp eq i8 %.pr, 0
  br i1 %.not, label %._crit_edge, label %9, !llvm.loop !10

._crit_edge:                                      ; preds = %9, %._crit_edge
  %.014.1 = phi ptr [ %17, %._crit_edge ], [ %4, %9 ]
  %.113.1 = phi i32 [ %16, %._crit_edge ], [ %12, %9 ]
  %14 = phi i8 [ %.pr.1, %._crit_edge ], [ %5, %9 ]
  %15 = sext i8 %14 to i32
  %16 = add nsw i32 %.113.1, %15
  %17 = getelementptr inbounds i8, ptr %.014.1, i64 1
  %.pr.1 = load i8, ptr %17, align 1, !tbaa !9
  %.not.1 = icmp eq i8 %.pr.1, 0
  br i1 %.not.1, label %._crit_edge.1, label %._crit_edge, !llvm.loop !10

._crit_edge.1:                                    ; preds = %._crit_edge
  %niter.next.1 = add i32 %niter, 2
  %niter.ncmp.1 = icmp eq i32 %niter.next.1, %unroll_iter
  br i1 %niter.ncmp.1, label %._crit_edge17.loopexit.unr-lcssa, label %.preheader, !llvm.loop !12

._crit_edge17.loopexit.unr-lcssa:                 ; preds = %._crit_edge.1, %.preheader.preheader
  %.lcssa.lcssa.ph = phi i32 [ poison, %.preheader.preheader ], [ %16, %._crit_edge.1 ]
  %.01015.unr = phi i32 [ 0, %.preheader.preheader ], [ %16, %._crit_edge.1 ]
  %lcmp.mod.not = icmp eq i32 %xtraiter, 0
  br i1 %lcmp.mod.not, label %._crit_edge17, label %.preheader.epil

.preheader.epil:                                  ; preds = %._crit_edge17.loopexit.unr-lcssa, %.preheader.epil
  %.014.epil = phi ptr [ %21, %.preheader.epil ], [ %4, %._crit_edge17.loopexit.unr-lcssa ]
  %.113.epil = phi i32 [ %20, %.preheader.epil ], [ %.01015.unr, %._crit_edge17.loopexit.unr-lcssa ]
  %18 = phi i8 [ %.pr.epil, %.preheader.epil ], [ %5, %._crit_edge17.loopexit.unr-lcssa ]
  %19 = sext i8 %18 to i32
  %20 = add nsw i32 %.113.epil, %19
  %21 = getelementptr inbounds i8, ptr %.014.epil, i64 1
  %.pr.epil = load i8, ptr %21, align 1, !tbaa !9
  %.not.epil = icmp eq i8 %.pr.epil, 0
  br i1 %.not.epil, label %._crit_edge17, label %.preheader.epil, !llvm.loop !10

._crit_edge17:                                    ; preds = %._crit_edge17.loopexit.unr-lcssa, %.preheader.epil, %2
  %.010.lcssa = phi i32 [ 0, %2 ], [ %.lcssa.lcssa.ph, %._crit_edge17.loopexit.unr-lcssa ], [ %20, %.preheader.epil ]
  %22 = tail call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %.010.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, !11}


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