; LLVM IR from china-hai/yd_crypto :: demo (des_demo)

; 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"

@__const.des_ecb_cbc_demo.iv = external hidden unnamed_addr constant [8 x i8], align 1
@__const.des_ecb_cbc_demo.key = external hidden unnamed_addr constant [8 x i8], align 1
@__const.des_ecb_cbc_demo.str = external hidden unnamed_addr constant [25 x i8], align 16

; Function Attrs: nounwind uwtable
define dso_local void @des_ecb_cbc_demo() #0 {
  %1 = alloca [8 x i8], align 1
  %2 = alloca [8 x i8], align 1
  %3 = alloca [25 x i8], align 16
  %4 = alloca [24 x i8], align 16
  %5 = alloca [24 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 8, ptr %1) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %1, ptr align 1 @__const.des_ecb_cbc_demo.iv, i64 8, i1 false)
  call void @llvm.lifetime.start.p0(i64 8, ptr %2) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %2, ptr align 1 @__const.des_ecb_cbc_demo.key, i64 8, i1 false)
  call void @llvm.lifetime.start.p0(i64 25, ptr %3) #4
  call void @llvm.memcpy.p0.p0.i64(ptr align 16 %3, ptr align 16 @__const.des_ecb_cbc_demo.str, i64 25, i1 false)
  call void @llvm.lifetime.start.p0(i64 24, ptr %4) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr %5) #4
  %6 = getelementptr inbounds [25 x i8], ptr %3, i64 0, i64 0
  %7 = getelementptr inbounds [24 x i8], ptr %5, i64 0, i64 0
  %8 = getelementptr inbounds [8 x i8], ptr %2, i64 0, i64 0
  call void @yd_des_ecb_encrypt(ptr noundef %6, ptr noundef %7, ptr noundef %8, i32 noundef 3)
  %9 = getelementptr inbounds [24 x i8], ptr %5, i64 0, i64 0
  %10 = getelementptr inbounds [24 x i8], ptr %4, i64 0, i64 0
  %11 = getelementptr inbounds [8 x i8], ptr %2, i64 0, i64 0
  call void @yd_des_ecb_decrypt(ptr noundef %9, ptr noundef %10, ptr noundef %11, i32 noundef 3)
  %12 = getelementptr inbounds [25 x i8], ptr %3, i64 0, i64 0
  %13 = getelementptr inbounds [24 x i8], ptr %5, i64 0, i64 0
  %14 = getelementptr inbounds [8 x i8], ptr %2, i64 0, i64 0
  %15 = getelementptr inbounds [8 x i8], ptr %1, i64 0, i64 0
  call void @yd_des_cbc_encrypt(ptr noundef %12, ptr noundef %13, ptr noundef %14, ptr noundef %15, i32 noundef 3)
  %16 = getelementptr inbounds [24 x i8], ptr %5, i64 0, i64 0
  %17 = getelementptr inbounds [24 x i8], ptr %4, i64 0, i64 0
  %18 = getelementptr inbounds [8 x i8], ptr %2, i64 0, i64 0
  %19 = getelementptr inbounds [8 x i8], ptr %1, i64 0, i64 0
  call void @yd_des_cbc_decrypt(ptr noundef %16, ptr noundef %17, ptr noundef %18, ptr noundef %19, i32 noundef 3)
  call void @llvm.lifetime.end.p0(i64 24, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 25, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %2) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %1) #4
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; 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) #2

declare void @yd_des_ecb_encrypt(ptr noundef, ptr noundef, ptr noundef, i32 noundef) #3

declare void @yd_des_ecb_decrypt(ptr noundef, ptr noundef, ptr noundef, i32 noundef) #3

declare void @yd_des_cbc_encrypt(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef) #3

declare void @yd_des_cbc_decrypt(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef) #3

; 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 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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)"}


; 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"

@__const.des_ecb_cbc_demo.iv = external hidden unnamed_addr constant [8 x i8], align 1
@__const.des_ecb_cbc_demo.key = external hidden unnamed_addr constant [8 x i8], align 1
@__const.des_ecb_cbc_demo.str = external hidden unnamed_addr constant [25 x i8], align 16

; Function Attrs: nounwind uwtable
define dso_local void @des_ecb_cbc_demo() local_unnamed_addr #0 {
  %1 = alloca [8 x i8], align 8
  %2 = alloca [8 x i8], align 8
  %3 = alloca [25 x i8], align 16
  %4 = alloca [24 x i8], align 16
  %5 = alloca [24 x i8], align 16
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %1) #4
  %6 = load i64, ptr @__const.des_ecb_cbc_demo.iv, align 1
  store i64 %6, ptr %1, align 8
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %2) #4
  %7 = load i64, ptr @__const.des_ecb_cbc_demo.key, align 1
  store i64 %7, ptr %2, align 8
  call void @llvm.lifetime.start.p0(i64 25, ptr nonnull %3) #4
  call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 16 dereferenceable(25) %3, ptr noundef nonnull align 16 dereferenceable(25) @__const.des_ecb_cbc_demo.str, i64 25, i1 false)
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %4) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %5) #4
  call void @yd_des_ecb_encrypt(ptr noundef nonnull %3, ptr noundef nonnull %5, ptr noundef nonnull %2, i32 noundef 3) #4
  call void @yd_des_ecb_decrypt(ptr noundef nonnull %5, ptr noundef nonnull %4, ptr noundef nonnull %2, i32 noundef 3) #4
  call void @yd_des_cbc_encrypt(ptr noundef nonnull %3, ptr noundef nonnull %5, ptr noundef nonnull %2, ptr noundef nonnull %1, i32 noundef 3) #4
  call void @yd_des_cbc_decrypt(ptr noundef nonnull %5, ptr noundef nonnull %4, ptr noundef nonnull %2, ptr noundef nonnull %1, i32 noundef 3) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %5) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %4) #4
  call void @llvm.lifetime.end.p0(i64 25, ptr nonnull %3) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %2) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %1) #4
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress 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) #2

declare void @yd_des_ecb_encrypt(ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #3

declare void @yd_des_ecb_decrypt(ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #3

declare void @yd_des_cbc_encrypt(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #3

declare void @yd_des_cbc_decrypt(ptr noundef, ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #3

; Function Attrs: mustprogress 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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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)"}


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