; LLVM IR from tum-i4/obfuscation-benchmarks :: small-programs (16b-1-1-0-0-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
  %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 = %28, %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 %31

24:                                               ; preds = %15
  %25 = load i32, ptr %6, align 4, !tbaa !5
  %26 = load i32, ptr %8, align 4, !tbaa !5
  %27 = add nsw i32 %26, %25
  store i32 %27, ptr %8, align 4, !tbaa !5
  br label %28

28:                                               ; preds = %24
  %29 = load i32, ptr %6, align 4, !tbaa !5
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %6, align 4, !tbaa !5
  br label %15, !llvm.loop !12

31:                                               ; preds = %15
  %32 = load ptr, ptr %9, align 8, !tbaa !9
  store ptr %32, ptr %11, align 8, !tbaa !9
  br label %33

33:                                               ; preds = %43, %31
  %34 = load ptr, ptr %11, align 8, !tbaa !9
  %35 = load i8, ptr %34, align 1, !tbaa !11
  %36 = icmp ne i8 %35, 0
  br i1 %36, label %37, label %46

37:                                               ; preds = %33
  %38 = load ptr, ptr %11, align 8, !tbaa !9
  %39 = load i8, ptr %38, align 1, !tbaa !11
  %40 = sext i8 %39 to i32
  %41 = load i32, ptr %8, align 4, !tbaa !5
  %42 = add nsw i32 %41, %40
  store i32 %42, ptr %8, align 4, !tbaa !5
  br label %43

43:                                               ; preds = %37
  %44 = load ptr, ptr %11, align 8, !tbaa !9
  %45 = getelementptr inbounds i8, ptr %44, i32 1
  store ptr %45, ptr %11, align 8, !tbaa !9
  br label %33, !llvm.loop !14

46:                                               ; preds = %33
  %47 = load i32, ptr %8, align 4, !tbaa !5
  %48 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %47)
  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 = icmp sgt i8 %5, 0
  br i1 %6, label %.preheader.thread, label %.preheader

.preheader.thread:                                ; preds = %2
  %7 = zext nneg i8 %5 to i32
  %8 = add nsw i32 %7, -1
  %9 = zext nneg i32 %8 to i33
  %10 = add nsw i32 %7, -2
  %11 = zext i32 %10 to i33
  %12 = mul i33 %9, %11
  %13 = lshr i33 %12, 1
  %14 = trunc nuw i33 %13 to i32
  %15 = add i32 %7, %14
  %16 = add i32 %15, -1
  br label %.lr.ph20.preheader

.preheader:                                       ; preds = %2
  %.not17 = icmp eq i8 %5, 0
  br i1 %.not17, label %._crit_edge, label %.lr.ph20.preheader

.lr.ph20.preheader:                               ; preds = %.preheader.thread, %.preheader
  %.118.ph = phi i32 [ 0, %.preheader ], [ %16, %.preheader.thread ]
  br label %.lr.ph20

.lr.ph20:                                         ; preds = %.lr.ph20.preheader, %.lr.ph20
  %.019 = phi ptr [ %20, %.lr.ph20 ], [ %4, %.lr.ph20.preheader ]
  %.118 = phi i32 [ %19, %.lr.ph20 ], [ %.118.ph, %.lr.ph20.preheader ]
  %17 = phi i8 [ %.pr, %.lr.ph20 ], [ %5, %.lr.ph20.preheader ]
  %18 = sext i8 %17 to i32
  %19 = add nsw i32 %.118, %18
  %20 = getelementptr inbounds i8, ptr %.019, i64 1
  %.pr = load i8, ptr %20, align 1, !tbaa !9
  %.not = icmp eq i8 %.pr, 0
  br i1 %.not, label %._crit_edge, label %.lr.ph20, !llvm.loop !10

._crit_edge:                                      ; preds = %.lr.ph20, %.preheader
  %.1.lcssa = phi i32 [ 0, %.preheader ], [ %19, %.lr.ph20 ]
  %21 = 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"}


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