; LLVM IR from number571/c-crypto-lib :: crypto/cipher (a1z26)

; 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"

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local void @to_bytes_a1z26(ptr noundef %0, ptr noundef %1) #1 {
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca [5 x i8], align 1
  %6 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store ptr %1, ptr %4, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 5, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  %7 = getelementptr inbounds [5 x i8], ptr %5, i64 0, i64 0
  store ptr %7, ptr %6, align 8, !tbaa !5
  br label %8

8:                                                ; preds = %32, %2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = load i8, ptr %9, align 1, !tbaa !9
  %11 = zext i8 %10 to i32
  %12 = icmp ne i32 %11, 0
  br i1 %12, label %13, label %35

13:                                               ; preds = %8
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = load i8, ptr %14, align 1, !tbaa !9
  %16 = zext i8 %15 to i32
  %17 = icmp eq i32 %16, 32
  br i1 %17, label %18, label %26

18:                                               ; preds = %13
  %19 = load ptr, ptr %6, align 8, !tbaa !5
  store i8 0, ptr %19, align 1, !tbaa !9
  %20 = getelementptr inbounds [5 x i8], ptr %5, i64 0, i64 0
  %21 = call i32 @atoi(ptr noundef %20) #4
  %22 = trunc i32 %21 to i8
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = getelementptr inbounds i8, ptr %23, i32 1
  store ptr %24, ptr %3, align 8, !tbaa !5
  store i8 %22, ptr %23, align 1, !tbaa !9
  %25 = getelementptr inbounds [5 x i8], ptr %5, i64 0, i64 0
  store ptr %25, ptr %6, align 8, !tbaa !5
  br label %31

26:                                               ; preds = %13
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = load i8, ptr %27, align 1, !tbaa !9
  %29 = load ptr, ptr %6, align 8, !tbaa !5
  %30 = getelementptr inbounds i8, ptr %29, i32 1
  store ptr %30, ptr %6, align 8, !tbaa !5
  store i8 %28, ptr %29, align 1, !tbaa !9
  br label %31

31:                                               ; preds = %26, %18
  br label %32

32:                                               ; preds = %31
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = getelementptr inbounds i8, ptr %33, i32 1
  store ptr %34, ptr %4, align 8, !tbaa !5
  br label %8, !llvm.loop !10

35:                                               ; preds = %8
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  store i8 0, ptr %36, align 1, !tbaa !9
  %37 = getelementptr inbounds [5 x i8], ptr %5, i64 0, i64 0
  %38 = call i32 @atoi(ptr noundef %37) #4
  %39 = trunc i32 %38 to i8
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = getelementptr inbounds i8, ptr %40, i32 1
  store ptr %41, ptr %3, align 8, !tbaa !5
  store i8 %39, ptr %40, align 1, !tbaa !9
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  store i8 -128, ptr %42, align 1, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 5, ptr %5) #3
  ret void
}

; Function Attrs: inlinehint nounwind willreturn memory(read) uwtable
declare i32 @atoi(ptr noundef nonnull) #2

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { inlinehint nounwind willreturn memory(read) 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 #3 = { nounwind }
attributes #4 = { nounwind willreturn memory(read) }

!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"}


; 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"

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nofree nounwind memory(readwrite, inaccessiblemem: read) uwtable
define dso_local void @to_bytes_a1z26(ptr nocapture noundef writeonly %0, ptr nocapture noundef readonly %1) local_unnamed_addr #1 {
  %3 = alloca [5 x i8], align 1
  call void @llvm.lifetime.start.p0(i64 5, ptr nonnull %3) #3
  br label %4

4:                                                ; preds = %12, %2
  %.011 = phi ptr [ %0, %2 ], [ %.112, %12 ]
  %.010 = phi ptr [ %1, %2 ], [ %13, %12 ]
  %.0 = phi ptr [ %3, %2 ], [ %.1, %12 ]
  %5 = load i8, ptr %.010, align 1, !tbaa !5
  switch i8 %5, label %10 [
    i8 0, label %14
    i8 32, label %6
  ]

6:                                                ; preds = %4
  store i8 0, ptr %.0, align 1, !tbaa !5
  %7 = call i32 @atoi(ptr nocapture noundef %3) #4
  %8 = trunc i32 %7 to i8
  %9 = getelementptr inbounds i8, ptr %.011, i64 1
  store i8 %8, ptr %.011, align 1, !tbaa !5
  br label %12

10:                                               ; preds = %4
  %11 = getelementptr inbounds i8, ptr %.0, i64 1
  store i8 %5, ptr %.0, align 1, !tbaa !5
  br label %12

12:                                               ; preds = %6, %10
  %.112 = phi ptr [ %9, %6 ], [ %.011, %10 ]
  %.1 = phi ptr [ %3, %6 ], [ %11, %10 ]
  %13 = getelementptr inbounds i8, ptr %.010, i64 1
  br label %4, !llvm.loop !8

14:                                               ; preds = %4
  store i8 0, ptr %.0, align 1, !tbaa !5
  %15 = call i32 @atoi(ptr nocapture noundef %3) #4
  %16 = trunc i32 %15 to i8
  %17 = getelementptr inbounds i8, ptr %.011, i64 1
  store i8 %16, ptr %.011, align 1, !tbaa !5
  store i8 -128, ptr %17, align 1, !tbaa !5
  call void @llvm.lifetime.end.p0(i64 5, ptr nonnull %3) #3
  ret void
}

; Function Attrs: inlinehint mustprogress nofree nounwind willreturn memory(read) uwtable
declare i32 @atoi(ptr nocapture noundef nonnull) local_unnamed_addr #2

attributes #0 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nofree nounwind memory(readwrite, inaccessiblemem: read) 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 #2 = { inlinehint mustprogress nofree nounwind willreturn memory(read) 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 #3 = { nounwind }
attributes #4 = { nounwind willreturn memory(read) }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = distinct !{!8, !9}
!9 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass