; LLVM IR from UBIC-repo/core :: Crypto/PassportCrypto.ll (ZN14PassportCrypto15decryptWith3DESEPhPcS1_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

declare void @DES_ede3_cbc_encrypt(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN14PassportCrypto15decryptWith3DESEPhPcS1_S0_i(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, i32 noundef %4) #3 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
  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) #4
  %14 = load ptr, ptr %7, align 8, !tbaa !5
  call void @DES_set_key_unchecked(ptr noundef %14, ptr noundef %11)
  call void @llvm.lifetime.start.p0(i64 128, ptr %12) #4
  %15 = load ptr, ptr %8, align 8, !tbaa !5
  call void @DES_set_key_unchecked(ptr noundef %15, ptr noundef %12)
  call void @llvm.lifetime.start.p0(i64 8, ptr %13) #4
  call void @llvm.memset.p0.i64(ptr align 1 %13, i8 0, i64 8, i1 false)
  %16 = load ptr, ptr %6, align 8, !tbaa !5
  %17 = load ptr, ptr %9, align 8, !tbaa !5
  %18 = load i32, ptr %10, align 4, !tbaa !9
  %19 = sext i32 %18 to i64
  call void @DES_ede3_cbc_encrypt(ptr noundef %16, ptr noundef %17, i64 noundef %19, ptr noundef %11, ptr noundef %12, ptr noundef %11, ptr noundef %13, i32 noundef 0)
  call void @llvm.lifetime.end.p0(i64 8, ptr %13) #4
  call void @llvm.lifetime.end.p0(i64 128, ptr %12) #4
  call void @llvm.lifetime.end.p0(i64 128, ptr %11) #4
  ret void
}

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 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 = !{!"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}


; 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

declare void @DES_ede3_cbc_encrypt(ptr noundef, ptr noundef, i64 noundef, ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN14PassportCrypto15decryptWith3DESEPhPcS1_S0_i(ptr noundef %0, ptr noundef %1, ptr noundef %2, ptr noundef %3, i32 noundef %4) local_unnamed_addr #2 align 2 {
  %6 = alloca %struct.DES_ks, align 4
  %7 = alloca %struct.DES_ks, align 4
  %8 = alloca [8 x i8], align 8
  call void @llvm.lifetime.start.p0(i64 128, ptr nonnull %6) #3
  call void @DES_set_key_unchecked(ptr noundef %1, ptr noundef nonnull %6)
  call void @llvm.lifetime.start.p0(i64 128, ptr nonnull %7) #3
  call void @DES_set_key_unchecked(ptr noundef %2, ptr noundef nonnull %7)
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %8) #3
  store i64 0, ptr %8, align 8
  %9 = sext i32 %4 to i64
  call void @DES_ede3_cbc_encrypt(ptr noundef %0, ptr noundef %3, i64 noundef %9, ptr noundef nonnull %6, ptr noundef nonnull %7, ptr noundef nonnull %6, ptr noundef nonnull %8, i32 noundef 0)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %8) #3
  call void @llvm.lifetime.end.p0(i64 128, ptr nonnull %7) #3
  call void @llvm.lifetime.end.p0(i64 128, ptr nonnull %6) #3
  ret void
}

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 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)"}


; Effective O3 passes: GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,SROAPass