; LLVM IR from intel/cryptography-primitives :: sources/ippcp/sms4 (pcpsms4decryptcfb)

; 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._cpSMS4 = type { i32, [32 x i32], [32 x i32] }

; Function Attrs: nounwind uwtable
define dso_local i32 @ippsSMS4DecryptCFB(ptr noundef %0, ptr noundef %1, i32 noundef %2, i32 noundef %3, ptr noundef %4, ptr noundef %5) #0 {
  %7 = alloca i32, align 4
  %8 = alloca ptr, align 8
  %9 = alloca ptr, align 8
  %10 = alloca i32, align 4
  %11 = alloca i32, align 4
  %12 = alloca ptr, align 8
  %13 = alloca ptr, align 8
  store ptr %0, ptr %8, align 8, !tbaa !5
  store ptr %1, ptr %9, align 8, !tbaa !5
  store i32 %2, ptr %10, align 4, !tbaa !9
  store i32 %3, ptr %11, align 4, !tbaa !9
  store ptr %4, ptr %12, align 8, !tbaa !5
  store ptr %5, ptr %13, align 8, !tbaa !5
  %14 = load ptr, ptr %12, align 8, !tbaa !5
  %15 = icmp eq ptr null, %14
  br i1 %15, label %16, label %17

16:                                               ; preds = %6
  store i32 -8, ptr %7, align 4
  br label %65

17:                                               ; preds = %6
  %18 = load ptr, ptr %12, align 8, !tbaa !5
  %19 = getelementptr inbounds %struct._cpSMS4, ptr %18, i32 0, i32 0
  %20 = load i32, ptr %19, align 4, !tbaa !11
  %21 = load ptr, ptr %12, align 8, !tbaa !5
  %22 = call i64 @IPP_UINT_PTR(ptr noundef %21)
  %23 = trunc i64 %22 to i32
  %24 = xor i32 %20, %23
  %25 = icmp eq i32 %24, 1397576500
  br i1 %25, label %27, label %26

26:                                               ; preds = %17
  store i32 -13, ptr %7, align 4
  br label %65

27:                                               ; preds = %17
  %28 = load ptr, ptr %8, align 8, !tbaa !5
  %29 = icmp eq ptr null, %28
  br i1 %29, label %30, label %31

30:                                               ; preds = %27
  store i32 -8, ptr %7, align 4
  br label %65

31:                                               ; preds = %27
  %32 = load ptr, ptr %13, align 8, !tbaa !5
  %33 = icmp eq ptr null, %32
  br i1 %33, label %34, label %35

34:                                               ; preds = %31
  store i32 -8, ptr %7, align 4
  br label %65

35:                                               ; preds = %31
  %36 = load ptr, ptr %9, align 8, !tbaa !5
  %37 = icmp eq ptr null, %36
  br i1 %37, label %38, label %39

38:                                               ; preds = %35
  store i32 -8, ptr %7, align 4
  br label %65

39:                                               ; preds = %35
  %40 = load i32, ptr %10, align 4, !tbaa !9
  %41 = icmp slt i32 %40, 1
  br i1 %41, label %42, label %43

42:                                               ; preds = %39
  store i32 -15, ptr %7, align 4
  br label %65

43:                                               ; preds = %39
  %44 = load i32, ptr %11, align 4, !tbaa !9
  %45 = icmp sgt i32 1, %44
  br i1 %45, label %49, label %46

46:                                               ; preds = %43
  %47 = load i32, ptr %11, align 4, !tbaa !9
  %48 = icmp slt i32 16, %47
  br i1 %48, label %49, label %50

49:                                               ; preds = %46, %43
  store i32 -1003, ptr %7, align 4
  br label %65

50:                                               ; preds = %46
  %51 = load i32, ptr %10, align 4, !tbaa !9
  %52 = load i32, ptr %11, align 4, !tbaa !9
  %53 = srem i32 %51, %52
  %54 = icmp ne i32 %53, 0
  br i1 %54, label %55, label %56

55:                                               ; preds = %50
  store i32 -1005, ptr %7, align 4
  br label %65

56:                                               ; preds = %50
  %57 = load ptr, ptr %13, align 8, !tbaa !5
  %58 = load ptr, ptr %8, align 8, !tbaa !5
  %59 = load ptr, ptr %9, align 8, !tbaa !5
  %60 = load i32, ptr %10, align 4, !tbaa !9
  %61 = load i32, ptr %11, align 4, !tbaa !9
  %62 = sdiv i32 %60, %61
  %63 = load i32, ptr %11, align 4, !tbaa !9
  %64 = load ptr, ptr %12, align 8, !tbaa !5
  call void @cpDecryptSMS4_cfb(ptr noundef %57, ptr noundef %58, ptr noundef %59, i32 noundef %62, i32 noundef %63, ptr noundef %64)
  store i32 0, ptr %7, align 4
  br label %65

65:                                               ; preds = %56, %55, %49, %42, %38, %34, %30, %26, %16
  %66 = load i32, ptr %7, align 4
  ret i32 %66
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @IPP_UINT_PTR(ptr noundef) #1

; Function Attrs: nounwind uwtable
declare hidden void @cpDecryptSMS4_cfb(ptr noundef, ptr noundef, ptr noundef, i32 noundef, i32 noundef, ptr noundef) #0

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 = { inlinehint 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" }

!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 = !{!12, !10, i64 0}
!12 = !{!"_cpSMS4", !10, i64 0, !7, i64 4, !7, i64 132}


; 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: nounwind uwtable
define dso_local range(i32 -1005, 1) i32 @ippsSMS4DecryptCFB(ptr noundef %0, ptr noundef %1, i32 noundef %2, i32 noundef %3, ptr noundef %4, ptr noundef %5) local_unnamed_addr #0 {
  %7 = icmp eq ptr %4, null
  br i1 %7, label %26, label %8

8:                                                ; preds = %6
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = tail call i64 @IPP_UINT_PTR(ptr noundef nonnull %4)
  %11 = trunc i64 %10 to i32
  %12 = xor i32 %9, %11
  %13 = icmp eq i32 %12, 1397576500
  br i1 %13, label %14, label %26

14:                                               ; preds = %8
  %15 = icmp eq ptr %0, null
  %16 = icmp eq ptr %5, null
  %or.cond25 = or i1 %15, %16
  %17 = icmp eq ptr %1, null
  %or.cond26 = or i1 %17, %or.cond25
  br i1 %or.cond26, label %26, label %18

18:                                               ; preds = %14
  %19 = icmp slt i32 %2, 1
  br i1 %19, label %26, label %20

20:                                               ; preds = %18
  %21 = add i32 %3, -17
  %or.cond = icmp ult i32 %21, -16
  br i1 %or.cond, label %26, label %22

22:                                               ; preds = %20
  %23 = urem i32 %2, %3
  %24 = udiv i32 %2, %3
  %.not = icmp eq i32 %23, 0
  br i1 %.not, label %25, label %26

25:                                               ; preds = %22
  tail call void @cpDecryptSMS4_cfb(ptr noundef nonnull %5, ptr noundef nonnull %0, ptr noundef nonnull %1, i32 noundef %24, i32 noundef %3, ptr noundef nonnull %4)
  br label %26

26:                                               ; preds = %22, %20, %18, %14, %8, %6, %25
  %.0 = phi i32 [ 0, %25 ], [ -8, %6 ], [ -13, %8 ], [ -8, %14 ], [ -15, %18 ], [ -1003, %20 ], [ -1005, %22 ]
  ret i32 %.0
}

; Function Attrs: inlinehint nounwind uwtable
declare hidden i64 @IPP_UINT_PTR(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
declare hidden void @cpDecryptSMS4_cfb(ptr noundef, ptr noundef, ptr noundef, i32 noundef, i32 noundef, ptr noundef) local_unnamed_addr #0

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 = { inlinehint 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" }

!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, !7, i64 0}
!6 = !{!"_cpSMS4", !7, i64 0, !8, i64 4, !8, i64 132}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: DivRemPairsPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass