; LLVM IR from UBIC-repo/core :: Crypto/PassportCrypto.ll (ZN14PassportCrypto16calculate3DESMACEPhPcS1_S0_i)

; 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"

%struct.DES_ks = type { [16 x %union.anon] }
%union.anon = type { [2 x i32] }

; 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

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

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN14PassportCrypto12calculateXorEPhS0_S0_i(ptr noundef, ptr noundef, ptr noundef, i32 noundef) #3 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN14PassportCrypto11paddMessageEPhiS0_Pi(ptr noundef, i32 noundef, ptr noundef, ptr noundef) #3 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #4

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN14PassportCrypto16calculate3DESMACEPhPcS1_S0_i(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, i32 noundef %4) #5 align 2 {
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca %struct.DES_ks, align 4
  %12 = alloca %struct.DES_ks, align 4
  %13 = alloca [8 x i8], align 1
  %14 = alloca i32, align 4
  %15 = alloca [256 x i8], align 16
  %16 = alloca [8 x i8], align 1
  %17 = alloca i32, align 4
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store ptr %2, ptr %8, align 8, !tbaa !5
  store ptr %3, ptr %9, align 8, !tbaa !5
  store i32 %4, ptr %10, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 128, ptr %11) #6
  %18 = load ptr, ptr %7, align 8, !tbaa !5
  call void @DES_set_key_unchecked(ptr noundef %18, ptr noundef %11)
  call void @llvm.lifetime.start.p0(i64 128, ptr %12) #6
  %19 = load ptr, ptr %8, align 8, !tbaa !5
  call void @DES_set_key_unchecked(ptr noundef %19, ptr noundef %12)
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #6
  call void @llvm.memset.p0.i64(ptr align 1 %13, i8 0, i64 8, i1 false)
  call void @llvm.lifetime.start.p0(i64 4, ptr %14) #6
  call void @llvm.lifetime.start.p0(i64 256, ptr %15) #6
  %20 = load ptr, ptr %9, align 8, !tbaa !5
  %21 = load i32, ptr %10, align 4, !tbaa !9
  %22 = getelementptr inbounds [256 x i8], ptr %15, i64 0, i64 0
  call void @_ZN14PassportCrypto11paddMessageEPhiS0_Pi(ptr noundef %20, i32 noundef %21, ptr noundef %22, ptr noundef %14)
  %23 = getelementptr inbounds [256 x i8], ptr %15, i64 0, i64 0
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  call void @DES_cbc_encrypt(ptr noundef %23, ptr noundef %24, i64 noundef 8, ptr noundef %11, ptr noundef %13, i32 noundef 1)
  call void @llvm.lifetime.start.p0(i64 8, ptr %16) #6
  call void @llvm.lifetime.start.p0(i64 4, ptr %17) #6
  store i32 8, ptr %17, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %43, %5
  %26 = load i32, ptr %17, align 4, !tbaa !9
  %27 = load i32, ptr %14, align 4, !tbaa !9
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %30, label %29

29:                                               ; preds = %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %17) #6
  br label %46

30:                                               ; preds = %25
  %31 = getelementptr inbounds [8 x i8], ptr %16, i64 0, i64 0
  %32 = getelementptr inbounds [256 x i8], ptr %15, i64 0, i64 0
  %33 = load i32, ptr %17, align 4, !tbaa !9
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds i8, ptr %32, i64 %34
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %31, ptr align 1 %35, i64 8, i1 false)
  %36 = load ptr, ptr %6, align 8, !tbaa !5
  %37 = load ptr, ptr %6, align 8, !tbaa !5
  %38 = getelementptr inbounds [8 x i8], ptr %16, i64 0, i64 0
  call void @_ZN14PassportCrypto12calculateXorEPhS0_S0_i(ptr noundef %36, ptr noundef %37, ptr noundef %38, i32 noundef 8)
  %39 = load ptr, ptr %6, align 8, !tbaa !5
  %40 = load ptr, ptr %6, align 8, !tbaa !5
  call void @DES_cbc_encrypt(ptr noundef %39, ptr noundef %40, i64 noundef 8, ptr noundef %11, ptr noundef %13, i32 noundef 1)
  %41 = load ptr, ptr %6, align 8, !tbaa !5
  %42 = load ptr, ptr %6, align 8, !tbaa !5
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %41, ptr align 1 %42, i64 8, i1 false)
  br label %43

43:                                               ; preds = %30
  %44 = load i32, ptr %17, align 4, !tbaa !9
  %45 = add nsw i32 %44, 8
  store i32 %45, ptr %17, align 4, !tbaa !9
  br label %25, !llvm.loop !11

46:                                               ; preds = %29
  %47 = load ptr, ptr %6, align 8, !tbaa !5
  %48 = load ptr, ptr %6, align 8, !tbaa !5
  call void @DES_cbc_encrypt(ptr noundef %47, ptr noundef %48, i64 noundef 8, ptr noundef %12, ptr noundef %13, i32 noundef 0)
  %49 = load ptr, ptr %6, align 8, !tbaa !5
  %50 = load ptr, ptr %6, align 8, !tbaa !5
  call void @DES_cbc_encrypt(ptr noundef %49, ptr noundef %50, i64 noundef 8, ptr noundef %11, ptr noundef %13, i32 noundef 1)
  call void @llvm.lifetime.end.p0(i64 8, ptr %16) #6
  call void @llvm.lifetime.end.p0(i64 256, ptr %15) #6
  call void @llvm.lifetime.end.p0(i64 4, ptr %14) #6
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #6
  call void @llvm.lifetime.end.p0(i64 128, ptr %12) #6
  call void @llvm.lifetime.end.p0(i64 128, ptr %11) #6
  ret void
}

declare void @DES_cbc_encrypt(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef, i32 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 = { nocallback nofree nounwind willreturn memory(argmem: write) }
attributes #3 = { mustprogress 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 #4 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #5 = { mustprogress 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 #6 = { 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++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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"

%struct.DES_ks = type { [16 x %union.anon] }
%union.anon = type { [2 x i32] }

; 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

declare void @DES_set_key_unchecked(ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN14PassportCrypto12calculateXorEPhS0_S0_i(ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZN14PassportCrypto11paddMessageEPhiS0_Pi(ptr noundef, i32 noundef, ptr noundef, ptr noundef) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN14PassportCrypto16calculate3DESMACEPhPcS1_S0_i(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, i32 noundef %4) local_unnamed_addr #3 align 2 {
  %6 = alloca %struct.DES_ks, align 4
  %7 = alloca %struct.DES_ks, align 4
  %8 = alloca [8 x i8], align 8
  %9 = alloca i32, align 4
  %10 = alloca [256 x i8], align 16
  %11 = alloca [8 x i8], align 8
  call void @llvm.lifetime.start.p0(i64 128, ptr nonnull %6) #4
  call void @DES_set_key_unchecked(ptr noundef %1, ptr noundef nonnull %6)
  call void @llvm.lifetime.start.p0(i64 128, ptr nonnull %7) #4
  call void @DES_set_key_unchecked(ptr noundef %2, ptr noundef nonnull %7)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %8) #4
  store i64 0, ptr %8, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %9) #4
  call void @llvm.lifetime.start.p0(i64 256, ptr nonnull %10) #4
  call void @_ZN14PassportCrypto11paddMessageEPhiS0_Pi(ptr noundef %3, i32 noundef %4, ptr noundef nonnull %10, ptr noundef nonnull %9)
  call void @DES_cbc_encrypt(ptr noundef nonnull %10, ptr noundef %0, i64 noundef 8, ptr noundef nonnull %6, ptr noundef nonnull %8, i32 noundef 1)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %11) #4
  %12 = load i32, ptr %9, align 4, !tbaa !5
  %13 = icmp sgt i32 %12, 8
  br i1 %13, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %5
  call void @DES_cbc_encrypt(ptr noundef %0, ptr noundef %0, i64 noundef 8, ptr noundef nonnull %7, ptr noundef nonnull %8, i32 noundef 0)
  call void @DES_cbc_encrypt(ptr noundef %0, ptr noundef %0, i64 noundef 8, ptr noundef nonnull %6, ptr noundef nonnull %8, i32 noundef 1)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %11) #4
  call void @llvm.lifetime.end.p0(i64 256, ptr nonnull %10) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %9) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #4
  call void @llvm.lifetime.end.p0(i64 128, ptr nonnull %7) #4
  call void @llvm.lifetime.end.p0(i64 128, ptr nonnull %6) #4
  ret void

.lr.ph:                                           ; preds = %5, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 8, %5 ]
  %14 = getelementptr inbounds i8, ptr %10, i64 %indvars.iv
  %15 = load i64, ptr %14, align 8
  store i64 %15, ptr %11, align 8
  call void @_ZN14PassportCrypto12calculateXorEPhS0_S0_i(ptr noundef %0, ptr noundef %0, ptr noundef nonnull %11, i32 noundef 8)
  call void @DES_cbc_encrypt(ptr noundef %0, ptr noundef %0, i64 noundef 8, ptr noundef nonnull %6, ptr noundef nonnull %8, i32 noundef 1)
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 8
  %16 = load i32, ptr %9, align 4, !tbaa !5
  %17 = trunc nuw i64 %indvars.iv.next to i32
  %18 = icmp sgt i32 %16, %17
  br i1 %18, label %.lr.ph, label %._crit_edge, !llvm.loop !9
}

declare void @DES_cbc_encrypt(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #1

attributes #0 = { mustprogress 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 = { mustprogress 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 = { mustprogress 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 #4 = { 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++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


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