; LLVM IR from louk78/crypto_project :: rsa (rsa_bin2dec)

; 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

declare ptr @bignum_alloc(...) #1

declare void @bignum_fromint(ptr noundef, i32 noundef) #1

declare void @bignum_imultiply(ptr noundef, ptr noundef) #1

declare void @bignum_free(ptr noundef) #1

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

declare ptr @bignum_tostring(ptr noundef) #1

; Function Attrs: nounwind uwtable
define dso_local ptr @rsa_bin2dec(ptr noundef %0, i32 noundef %1) #2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %8) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %9) #3
  call void @llvm.lifetime.start.p0(i64 8, ptr %10) #3
  %11 = call ptr (...) @bignum_alloc()
  store ptr %11, ptr %7, align 8, !tbaa !5
  %12 = call ptr (...) @bignum_alloc()
  store ptr %12, ptr %6, align 8, !tbaa !5
  %13 = call ptr (...) @bignum_alloc()
  store ptr %13, ptr %9, align 8, !tbaa !5
  %14 = call ptr (...) @bignum_alloc()
  store ptr %14, ptr %8, align 8, !tbaa !5
  %15 = load ptr, ptr %6, align 8, !tbaa !5
  call void @bignum_fromint(ptr noundef %15, i32 noundef 1)
  %16 = load ptr, ptr %9, align 8, !tbaa !5
  call void @bignum_fromint(ptr noundef %16, i32 noundef 256)
  store i32 0, ptr %5, align 4, !tbaa !9
  br label %17

17:                                               ; preds = %35, %2
  %18 = load i32, ptr %5, align 4, !tbaa !9
  %19 = load i32, ptr %4, align 4, !tbaa !9
  %20 = icmp slt i32 %18, %19
  br i1 %20, label %21, label %38

21:                                               ; preds = %17
  %22 = load ptr, ptr %7, align 8, !tbaa !5
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = load i32, ptr %5, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds i8, ptr %23, i64 %25
  %27 = load i8, ptr %26, align 1, !tbaa !11
  %28 = zext i8 %27 to i32
  call void @bignum_fromint(ptr noundef %22, i32 noundef %28)
  %29 = load ptr, ptr %7, align 8, !tbaa !5
  %30 = load ptr, ptr %6, align 8, !tbaa !5
  call void @bignum_imultiply(ptr noundef %29, ptr noundef %30)
  %31 = load ptr, ptr %8, align 8, !tbaa !5
  %32 = load ptr, ptr %7, align 8, !tbaa !5
  call void @bignum_iadd(ptr noundef %31, ptr noundef %32)
  %33 = load ptr, ptr %6, align 8, !tbaa !5
  %34 = load ptr, ptr %9, align 8, !tbaa !5
  call void @bignum_imultiply(ptr noundef %33, ptr noundef %34)
  br label %35

35:                                               ; preds = %21
  %36 = load i32, ptr %5, align 4, !tbaa !9
  %37 = add nsw i32 %36, 1
  store i32 %37, ptr %5, align 4, !tbaa !9
  br label %17, !llvm.loop !12

38:                                               ; preds = %17
  %39 = load ptr, ptr %8, align 8, !tbaa !5
  %40 = call ptr @bignum_tostring(ptr noundef %39)
  store ptr %40, ptr %10, align 8, !tbaa !5
  %41 = load ptr, ptr %7, align 8, !tbaa !5
  call void @bignum_free(ptr noundef %41)
  %42 = load ptr, ptr %6, align 8, !tbaa !5
  call void @bignum_free(ptr noundef %42)
  %43 = load ptr, ptr %9, align 8, !tbaa !5
  call void @bignum_free(ptr noundef %43)
  %44 = load ptr, ptr %8, align 8, !tbaa !5
  call void @bignum_free(ptr noundef %44)
  %45 = load ptr, ptr %10, align 8, !tbaa !5
  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 8, ptr %8) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #3
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  ret ptr %45
}

declare void @bignum_iadd(ptr noundef, ptr noundef) #1

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 = { 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 #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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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"

declare ptr @bignum_alloc(...) local_unnamed_addr #0

declare void @bignum_fromint(ptr noundef, i32 noundef) local_unnamed_addr #0

declare void @bignum_imultiply(ptr noundef, ptr noundef) local_unnamed_addr #0

declare void @bignum_free(ptr noundef) local_unnamed_addr #0

declare ptr @bignum_tostring(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local ptr @rsa_bin2dec(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #1 {
  %3 = tail call ptr (...) @bignum_alloc() #2
  %4 = tail call ptr (...) @bignum_alloc() #2
  %5 = tail call ptr (...) @bignum_alloc() #2
  %6 = tail call ptr (...) @bignum_alloc() #2
  tail call void @bignum_fromint(ptr noundef %4, i32 noundef 1) #2
  tail call void @bignum_fromint(ptr noundef %5, i32 noundef 256) #2
  %7 = icmp sgt i32 %1, 0
  br i1 %7, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %wide.trip.count = zext nneg i32 %1 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.preheader, %.lr.ph
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %8 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv
  %9 = load i8, ptr %8, align 1, !tbaa !5
  %10 = zext i8 %9 to i32
  tail call void @bignum_fromint(ptr noundef %3, i32 noundef %10) #2
  tail call void @bignum_imultiply(ptr noundef %3, ptr noundef %4) #2
  tail call void @bignum_iadd(ptr noundef %6, ptr noundef %3) #2
  tail call void @bignum_imultiply(ptr noundef %4, ptr noundef %5) #2
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !8

._crit_edge:                                      ; preds = %.lr.ph, %2
  %11 = tail call ptr @bignum_tostring(ptr noundef %6) #2
  tail call void @bignum_free(ptr noundef %3) #2
  tail call void @bignum_free(ptr noundef %4) #2
  tail call void @bignum_free(ptr noundef %5) #2
  tail call void @bignum_free(ptr noundef %6) #2
  ret ptr %11
}

declare void @bignum_iadd(ptr noundef, ptr noundef) local_unnamed_addr #0

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


; Effective O3 passes: GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass