; 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: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; 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) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local i64 @CRYPTO_ccm128_tag(ptr noundef %0, ptr noundef %1, i64 noundef %2) #2 {
  %4 = alloca i64, align 8
  %5 = alloca ptr, align 8
  %6 = alloca ptr, align 8
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  store ptr %0, ptr %5, align 8, !tbaa !5
  store ptr %1, ptr %6, align 8, !tbaa !5
  store i64 %2, ptr %7, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #3
  %10 = load ptr, ptr %5, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.ccm128_context, ptr %10, i32 0, i32 0
  %12 = getelementptr inbounds [16 x i8], ptr %11, i64 0, i64 0
  %13 = load i8, ptr %12, align 8, !tbaa !11
  %14 = zext i8 %13 to i32
  %15 = ashr i32 %14, 3
  %16 = and i32 %15, 7
  store i32 %16, ptr %8, align 4, !tbaa !12
  %17 = load i32, ptr %8, align 4, !tbaa !12
  %18 = mul i32 %17, 2
  store i32 %18, ptr %8, align 4, !tbaa !12
  %19 = load i32, ptr %8, align 4, !tbaa !12
  %20 = add i32 %19, 2
  store i32 %20, ptr %8, align 4, !tbaa !12
  %21 = load i64, ptr %7, align 8, !tbaa !9
  %22 = load i32, ptr %8, align 4, !tbaa !12
  %23 = zext i32 %22 to i64
  %24 = icmp ne i64 %21, %23
  br i1 %24, label %25, label %26

25:                                               ; preds = %3
  store i64 0, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %35

26:                                               ; preds = %3
  %27 = load ptr, ptr %6, align 8, !tbaa !5
  %28 = load ptr, ptr %5, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.ccm128_context, ptr %28, i32 0, i32 1
  %30 = getelementptr inbounds [16 x i8], ptr %29, i64 0, i64 0
  %31 = load i32, ptr %8, align 4, !tbaa !12
  %32 = zext i32 %31 to i64
  call void @llvm.memcpy.p0.p0.i64(ptr align 1 %27, ptr align 8 %30, i64 %32, i1 false)
  %33 = load i32, ptr %8, align 4, !tbaa !12
  %34 = zext i32 %33 to i64
  store i64 %34, ptr %4, align 8
  store i32 1, ptr %9, align 4
  br label %35

35:                                               ; preds = %26, %25
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #3
  %36 = load i64, ptr %4, align 8
  ret i64 %36
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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, !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 = !{!"long", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = !{!13, !13, i64 0}
!13 = !{!"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"

; 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) #0

; Function Attrs: mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) uwtable
define dso_local range(i64 0, 17) i64 @CRYPTO_ccm128_tag(ptr nocapture noundef readonly %0, ptr nocapture noundef writeonly %1, i64 noundef %2) local_unnamed_addr #1 {
  %4 = load i8, ptr %0, align 8, !tbaa !5
  %5 = lshr i8 %4, 2
  %6 = and i8 %5, 14
  %narrow = add nuw nsw i8 %6, 2
  %7 = zext nneg i8 %narrow to i64
  %.not = icmp eq i64 %7, %2
  br i1 %.not, label %8, label %10

8:                                                ; preds = %3
  %9 = getelementptr inbounds i8, ptr %0, i64 16
  tail call void @llvm.memcpy.p0.p0.i64(ptr noundef nonnull align 1 dereferenceable(1) %1, ptr noundef nonnull align 8 dereferenceable(1) %9, i64 %2, i1 false)
  br label %10

10:                                               ; preds = %3, %8
  %.0 = phi i64 [ %2, %8 ], [ 0, %3 ]
  ret i64 %.0
}

attributes #0 = { mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress nofree norecurse nosync nounwind willreturn memory(argmem: readwrite) 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 = !{!"omnipotent char", !7, i64 0}
!7 = !{!"Simple C/C++ TBAA"}


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