; LLVM IR from openssl/openssl :: crypto/modes (ccm128)

; 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.ccm128_context = type { %union.anon, %union.anon, i64, ptr, ptr }
%union.anon = type { [2 x i64] }

; Function Attrs: nounwind uwtable
define dso_local void @CRYPTO_ccm128_init(ptr noundef %0, i32 noundef %1, i32 noundef %2, ptr noundef %3, ptr noundef %4) #0 {
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca ptr, align 8
  %10 = alloca ptr, align 8
  store ptr %0, ptr %6, align 8, !tbaa !5
  store i32 %1, ptr %7, align 4, !tbaa !9
  store i32 %2, ptr %8, align 4, !tbaa !9
  store ptr %3, ptr %9, align 8, !tbaa !5
  store ptr %4, ptr %10, align 8, !tbaa !5
  %11 = load ptr, ptr %6, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.ccm128_context, ptr %11, i32 0, i32 0
  %13 = getelementptr inbounds [16 x i8], ptr %12, i64 0, i64 0
  call void @llvm.memset.p0.i64(ptr align 8 %13, i8 0, i64 16, i1 false)
  %14 = load i32, ptr %8, align 4, !tbaa !9
  %15 = sub i32 %14, 1
  %16 = trunc i32 %15 to i8
  %17 = zext i8 %16 to i32
  %18 = and i32 %17, 7
  %19 = load i32, ptr %7, align 4, !tbaa !9
  %20 = sub i32 %19, 2
  %21 = udiv i32 %20, 2
  %22 = and i32 %21, 7
  %23 = trunc i32 %22 to i8
  %24 = zext i8 %23 to i32
  %25 = shl i32 %24, 3
  %26 = or i32 %18, %25
  %27 = trunc i32 %26 to i8
  %28 = load ptr, ptr %6, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.ccm128_context, ptr %28, i32 0, i32 0
  %30 = getelementptr inbounds [16 x i8], ptr %29, i64 0, i64 0
  store i8 %27, ptr %30, align 8, !tbaa !11
  %31 = load ptr, ptr %6, align 8, !tbaa !5
  %32 = getelementptr inbounds %struct.ccm128_context, ptr %31, i32 0, i32 2
  store i64 0, ptr %32, align 8, !tbaa !12
  %33 = load ptr, ptr %10, align 8, !tbaa !5
  %34 = load ptr, ptr %6, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.ccm128_context, ptr %34, i32 0, i32 3
  store ptr %33, ptr %35, align 8, !tbaa !15
  %36 = load ptr, ptr %9, align 8, !tbaa !5
  %37 = load ptr, ptr %6, align 8, !tbaa !5
  %38 = getelementptr inbounds %struct.ccm128_context, ptr %37, i32 0, i32 4
  store ptr %36, ptr %38, align 8, !tbaa !16
  ret void
}

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

!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 = !{!7, !7, i64 0}
!12 = !{!13, !14, i64 32}
!13 = !{!"ccm128_context", !7, i64 0, !7, i64 16, !14, i64 32, !6, i64 40, !6, i64 48}
!14 = !{!"long long", !7, i64 0}
!15 = !{!13, !6, i64 40}
!16 = !{!13, !6, i64 48}


; 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: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) uwtable
define dso_local void @CRYPTO_ccm128_init(ptr nocapture noundef writeonly %0, i32 noundef %1, i32 noundef %2, ptr noundef %3, ptr noundef %4) local_unnamed_addr #0 {
  tail call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(16) %0, i8 0, i64 16, i1 false)
  %6 = add i32 %2, 7
  %7 = and i32 %6, 7
  %8 = shl i32 %1, 2
  %9 = add i32 %8, 56
  %10 = and i32 %9, 56
  %11 = or disjoint i32 %7, %10
  %12 = trunc nuw nsw i32 %11 to i8
  store i8 %12, ptr %0, align 8, !tbaa !5
  %13 = getelementptr inbounds i8, ptr %0, i64 32
  store i64 0, ptr %13, align 8, !tbaa !8
  %14 = getelementptr inbounds i8, ptr %0, i64 40
  store ptr %4, ptr %14, align 8, !tbaa !12
  %15 = getelementptr inbounds i8, ptr %0, i64 48
  store ptr %3, ptr %15, align 8, !tbaa !13
  ret void
}

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #1

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: write) 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 nounwind willreturn memory(argmem: write) }

!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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}
!8 = !{!9, !10, i64 32}
!9 = !{!"ccm128_context", !6, i64 0, !6, i64 16, !10, i64 32, !11, i64 40, !11, i64 48}
!10 = !{!"long long", !6, i64 0}
!11 = !{!"any pointer", !6, i64 0}
!12 = !{!9, !11, i64 40}
!13 = !{!9, !11, i64 48}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,TailCallElimPass