; LLVM IR from tum-i4/obfuscation-benchmarks :: small-programs (16b-1-2-0-0-dc-2-2-0)

; 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
  %15 = load ptr, ptr %9, align 8, !tbaa !9
  store ptr %15, ptr %10, align 8, !tbaa !9
  br label %16

16:                                               ; preds = %36, %2
  %17 = load ptr, ptr %10, align 8, !tbaa !9
  %18 = load i8, ptr %17, align 1, !tbaa !11
  %19 = icmp ne i8 %18, 0
  br i1 %19, label %20, label %39

20:                                               ; preds = %16
  %21 = load ptr, ptr %9, align 8, !tbaa !9
  store ptr %21, ptr %11, align 8, !tbaa !9
  br label %22

22:                                               ; preds = %32, %20
  %23 = load ptr, ptr %11, align 8, !tbaa !9
  %24 = load i8, ptr %23, align 1, !tbaa !11
  %25 = icmp ne i8 %24, 0
  br i1 %25, label %26, label %35

26:                                               ; preds = %22
  %27 = load ptr, ptr %11, align 8, !tbaa !9
  %28 = load i8, ptr %27, align 1, !tbaa !11
  %29 = sext i8 %28 to i32
  %30 = load i32, ptr %8, align 4, !tbaa !5
  %31 = add nsw i32 %30, %29
  store i32 %31, ptr %8, align 4, !tbaa !5
  br label %32

32:                                               ; preds = %26
  %33 = load ptr, ptr %11, align 8, !tbaa !9
  %34 = getelementptr inbounds i8, ptr %33, i32 1
  store ptr %34, ptr %11, align 8, !tbaa !9
  br label %22, !llvm.loop !12

35:                                               ; preds = %22
  br label %36

36:                                               ; preds = %35
  %37 = load ptr, ptr %10, align 8, !tbaa !9
  %38 = getelementptr inbounds i8, ptr %37, i32 1
  store ptr %38, ptr %10, align 8, !tbaa !9
  br label %16, !llvm.loop !14

39:                                               ; preds = %16
  %40 = load i32, ptr %8, align 4, !tbaa !5
  %41 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %40)
  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
  %.not16 = icmp eq i8 %5, 0
  br i1 %.not16, label %._crit_edge19, label %.preheader

.preheader:                                       ; preds = %2, %._crit_edge
  %.0918 = phi ptr [ %12, %._crit_edge ], [ %4, %2 ]
  %.01017 = phi i32 [ %9, %._crit_edge ], [ 0, %2 ]
  br label %6

6:                                                ; preds = %.preheader, %6
  %7 = phi i8 [ %5, %.preheader ], [ %11, %6 ]
  %.015 = phi ptr [ %4, %.preheader ], [ %10, %6 ]
  %.114 = phi i32 [ %.01017, %.preheader ], [ %9, %6 ]
  %8 = sext i8 %7 to i32
  %9 = add nsw i32 %.114, %8
  %10 = getelementptr inbounds i8, ptr %.015, i64 1
  %11 = load i8, ptr %10, align 1, !tbaa !9
  %.not12 = icmp eq i8 %11, 0
  br i1 %.not12, label %._crit_edge, label %6, !llvm.loop !10

._crit_edge:                                      ; preds = %6
  %12 = getelementptr inbounds i8, ptr %.0918, i64 1
  %13 = load i8, ptr %12, align 1, !tbaa !9
  %.not = icmp eq i8 %13, 0
  br i1 %.not, label %._crit_edge19, label %.preheader, !llvm.loop !12

._crit_edge19:                                    ; preds = %._crit_edge, %2
  %.010.lcssa = phi i32 [ 0, %2 ], [ %9, %._crit_edge ]
  %14 = 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,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass