; LLVM IR from intel/cryptography-primitives :: sources/ippcp/sms4 (pcpsms4decryptecb)

; 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 @ippsSMS4DecryptECB(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) #0 {
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca ptr, align 8
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store ptr %1, ptr %7, align 8, !tbaa !5
  store i32 %2, ptr %8, align 4, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !5
  %10 = load ptr, ptr %9, align 8, !tbaa !5
  %11 = icmp eq ptr null, %10
  br i1 %11, label %12, label %13

12:                                               ; preds = %4
  store i32 -8, ptr %5, align 4
  br label %58

13:                                               ; preds = %4
  %14 = load ptr, ptr %9, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct._cpSMS4, ptr %14, i32 0, i32 0
  %16 = load i32, ptr %15, align 4, !tbaa !11
  %17 = load ptr, ptr %9, align 8, !tbaa !5
  %18 = call i64 @IPP_UINT_PTR(ptr noundef %17)
  %19 = trunc i64 %18 to i32
  %20 = xor i32 %16, %19
  %21 = icmp eq i32 %20, 1397576500
  br i1 %21, label %23, label %22

22:                                               ; preds = %13
  store i32 -13, ptr %5, align 4
  br label %58

23:                                               ; preds = %13
  %24 = load ptr, ptr %6, align 8, !tbaa !5
  %25 = icmp eq ptr null, %24
  br i1 %25, label %26, label %27

26:                                               ; preds = %23
  store i32 -8, ptr %5, align 4
  br label %58

27:                                               ; preds = %23
  %28 = load ptr, ptr %7, align 8, !tbaa !5
  %29 = icmp eq ptr null, %28
  br i1 %29, label %30, label %31

30:                                               ; preds = %27
  store i32 -8, ptr %5, align 4
  br label %58

31:                                               ; preds = %27
  %32 = load i32, ptr %8, align 4, !tbaa !9
  %33 = icmp slt i32 %32, 1
  br i1 %33, label %34, label %35

34:                                               ; preds = %31
  store i32 -15, ptr %5, align 4
  br label %58

35:                                               ; preds = %31
  %36 = load i32, ptr %8, align 4, !tbaa !9
  %37 = and i32 %36, 15
  %38 = icmp ne i32 %37, 0
  br i1 %38, label %39, label %40

39:                                               ; preds = %35
  store i32 -1005, ptr %5, align 4
  br label %58

40:                                               ; preds = %35
  br label %41

41:                                               ; preds = %50, %40
  %42 = load i32, ptr %8, align 4, !tbaa !9
  %43 = icmp sgt i32 %42, 0
  br i1 %43, label %44, label %57

44:                                               ; preds = %41
  %45 = load ptr, ptr %7, align 8, !tbaa !5
  %46 = load ptr, ptr %6, align 8, !tbaa !5
  %47 = load ptr, ptr %9, align 8, !tbaa !5
  %48 = getelementptr inbounds %struct._cpSMS4, ptr %47, i32 0, i32 2
  %49 = getelementptr inbounds [32 x i32], ptr %48, i64 0, i64 0
  call void @cpSMS4_Cipher(ptr noundef %45, ptr noundef %46, ptr noundef %49)
  br label %50

50:                                               ; preds = %44
  %51 = load i32, ptr %8, align 4, !tbaa !9
  %52 = sub nsw i32 %51, 16
  store i32 %52, ptr %8, align 4, !tbaa !9
  %53 = load ptr, ptr %6, align 8, !tbaa !5
  %54 = getelementptr inbounds i8, ptr %53, i64 16
  store ptr %54, ptr %6, align 8, !tbaa !5
  %55 = load ptr, ptr %7, align 8, !tbaa !5
  %56 = getelementptr inbounds i8, ptr %55, i64 16
  store ptr %56, ptr %7, align 8, !tbaa !5
  br label %41, !llvm.loop !13

57:                                               ; preds = %41
  store i32 0, ptr %5, align 4
  br label %58

58:                                               ; preds = %57, %39, %34, %30, %26, %22, %12
  %59 = load i32, ptr %5, align 4
  ret i32 %59
}

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

declare void @cpSMS4_Cipher(ptr noundef, ptr noundef, ptr noundef) #2

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" }
attributes #2 = { "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}
!13 = distinct !{!13, !14}
!14 = !{!"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"

; Function Attrs: nounwind uwtable
define dso_local range(i32 -1005, 1) i32 @ippsSMS4DecryptECB(ptr noundef %0, ptr noundef %1, i32 noundef %2, ptr noundef %3) local_unnamed_addr #0 {
  %5 = icmp eq ptr %3, null
  br i1 %5, label %.loopexit, label %6

6:                                                ; preds = %4
  %7 = load i32, ptr %3, align 4, !tbaa !5
  %8 = tail call i64 @IPP_UINT_PTR(ptr noundef nonnull %3)
  %9 = trunc i64 %8 to i32
  %10 = xor i32 %7, %9
  %11 = icmp eq i32 %10, 1397576500
  br i1 %11, label %12, label %.loopexit

12:                                               ; preds = %6
  %13 = icmp eq ptr %0, null
  %14 = icmp eq ptr %1, null
  %or.cond = or i1 %13, %14
  br i1 %or.cond, label %.loopexit, label %15

15:                                               ; preds = %12
  %16 = icmp slt i32 %2, 1
  br i1 %16, label %.loopexit, label %17

17:                                               ; preds = %15
  %18 = and i32 %2, 15
  %.not = icmp eq i32 %18, 0
  br i1 %.not, label %.lr.ph, label %.loopexit

.lr.ph:                                           ; preds = %17
  %19 = getelementptr inbounds i8, ptr %3, i64 132
  br label %20

20:                                               ; preds = %.lr.ph, %20
  %.01423 = phi i32 [ %2, %.lr.ph ], [ %21, %20 ]
  %.01522 = phi ptr [ %1, %.lr.ph ], [ %23, %20 ]
  %.01621 = phi ptr [ %0, %.lr.ph ], [ %22, %20 ]
  tail call void @cpSMS4_Cipher(ptr noundef nonnull %.01522, ptr noundef nonnull %.01621, ptr noundef nonnull %19) #3
  %21 = add nsw i32 %.01423, -16
  %22 = getelementptr inbounds i8, ptr %.01621, i64 16
  %23 = getelementptr inbounds i8, ptr %.01522, i64 16
  %24 = icmp ugt i32 %.01423, 16
  br i1 %24, label %20, label %.loopexit, !llvm.loop !10

.loopexit:                                        ; preds = %20, %17, %15, %12, %6, %4
  %.0 = phi i32 [ -8, %4 ], [ -13, %6 ], [ -8, %12 ], [ -15, %15 ], [ -1005, %17 ], [ 0, %20 ]
  ret i32 %.0
}

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

declare void @cpSMS4_Cipher(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #2

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" }
attributes #2 = { "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, !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"}
!10 = distinct !{!10, !11}
!11 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,ReassociatePass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass