; LLVM IR from gost-engine/engine :: gost89 (get_mac)

; 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"

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

; Function Attrs: nounwind uwtable
define dso_local void @get_mac(ptr noundef %0, i32 noundef %1, ptr noundef %2) #1 {
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca ptr, align 8
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  store ptr %2, ptr %6, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  %11 = load i32, ptr %5, align 4, !tbaa !9
  %12 = ashr i32 %11, 3
  store i32 %12, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = and i32 %13, 7
  store i32 %14, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  %15 = load i32, ptr %8, align 4, !tbaa !9
  %16 = icmp ne i32 %15, 0
  br i1 %16, label %17, label %22

17:                                               ; preds = %3
  %18 = load i32, ptr %8, align 4, !tbaa !9
  %19 = icmp slt i32 1, %18
  %20 = zext i1 %19 to i32
  %21 = sub nsw i32 %20, 1
  br label %23

22:                                               ; preds = %3
  br label %23

23:                                               ; preds = %22, %17
  %24 = phi i32 [ %21, %17 ], [ 0, %22 ]
  store i32 %24, ptr %9, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %10) #2
  store i32 0, ptr %10, align 4, !tbaa !9
  br label %25

25:                                               ; preds = %39, %23
  %26 = load i32, ptr %10, align 4, !tbaa !9
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = icmp slt i32 %26, %27
  br i1 %28, label %29, label %42

29:                                               ; preds = %25
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = load i32, ptr %10, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds i8, ptr %30, i64 %32
  %34 = load i8, ptr %33, align 1, !tbaa !11
  %35 = load ptr, ptr %6, align 8, !tbaa !5
  %36 = load i32, ptr %10, align 4, !tbaa !9
  %37 = sext i32 %36 to i64
  %38 = getelementptr inbounds i8, ptr %35, i64 %37
  store i8 %34, ptr %38, align 1, !tbaa !11
  br label %39

39:                                               ; preds = %29
  %40 = load i32, ptr %10, align 4, !tbaa !9
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %10, align 4, !tbaa !9
  br label %25, !llvm.loop !12

42:                                               ; preds = %25
  %43 = load i32, ptr %8, align 4, !tbaa !9
  %44 = icmp ne i32 %43, 0
  br i1 %44, label %45, label %59

45:                                               ; preds = %42
  %46 = load ptr, ptr %4, align 8, !tbaa !5
  %47 = load i32, ptr %10, align 4, !tbaa !9
  %48 = sext i32 %47 to i64
  %49 = getelementptr inbounds i8, ptr %46, i64 %48
  %50 = load i8, ptr %49, align 1, !tbaa !11
  %51 = zext i8 %50 to i32
  %52 = load i32, ptr %9, align 4, !tbaa !9
  %53 = and i32 %51, %52
  %54 = trunc i32 %53 to i8
  %55 = load ptr, ptr %6, align 8, !tbaa !5
  %56 = load i32, ptr %10, align 4, !tbaa !9
  %57 = sext i32 %56 to i64
  %58 = getelementptr inbounds i8, ptr %55, i64 %57
  store i8 %54, ptr %58, align 1, !tbaa !11
  br label %59

59:                                               ; preds = %45, %42
  call void @llvm.lifetime.end.p0(i64 4, ptr %10) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret void
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 = { 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 = !{!"int", !7, i64 0}
!11 = !{!7, !7, i64 0}
!12 = distinct !{!12, !13}
!13 = !{!"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: nofree norecurse nosync nounwind memory(argmem: readwrite) uwtable
define dso_local void @get_mac(ptr nocapture noundef readonly %0, i32 noundef %1, ptr nocapture noundef writeonly %2) local_unnamed_addr #0 {
  %4 = ashr i32 %1, 3
  %5 = and i32 %1, 7
  %.not.not = icmp eq i32 %5, 0
  %narrow = icmp eq i32 %5, 1
  %6 = icmp sgt i32 %4, 0
  br i1 %6, label %iter.check, label %._crit_edge

iter.check:                                       ; preds = %3
  %7 = ptrtoint ptr %2 to i64
  %8 = ptrtoint ptr %0 to i64
  %wide.trip.count = zext nneg i32 %4 to i64
  %min.iters.check = icmp ult i32 %4, 8
  %9 = sub i64 %7, %8
  %diff.check = icmp ult i64 %9, 32
  %or.cond = or i1 %min.iters.check, %diff.check
  br i1 %or.cond, label %.lr.ph.preheader, label %vector.main.loop.iter.check

vector.main.loop.iter.check:                      ; preds = %iter.check
  %min.iters.check18 = icmp ult i32 %4, 32
  br i1 %min.iters.check18, label %vec.epilog.ph, label %vector.ph

vector.ph:                                        ; preds = %vector.main.loop.iter.check
  %n.vec = and i64 %wide.trip.count, 2147483616
  br label %vector.body

vector.body:                                      ; preds = %vector.body, %vector.ph
  %index = phi i64 [ 0, %vector.ph ], [ %index.next, %vector.body ]
  %10 = getelementptr inbounds i8, ptr %0, i64 %index
  %11 = getelementptr inbounds i8, ptr %10, i64 16
  %wide.load = load <16 x i8>, ptr %10, align 1, !tbaa !5
  %wide.load19 = load <16 x i8>, ptr %11, align 1, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %2, i64 %index
  %13 = getelementptr inbounds i8, ptr %12, i64 16
  store <16 x i8> %wide.load, ptr %12, align 1, !tbaa !5
  store <16 x i8> %wide.load19, ptr %13, align 1, !tbaa !5
  %index.next = add nuw i64 %index, 32
  %14 = icmp eq i64 %index.next, %n.vec
  br i1 %14, label %middle.block, label %vector.body, !llvm.loop !8

middle.block:                                     ; preds = %vector.body
  %cmp.n = icmp eq i64 %n.vec, %wide.trip.count
  br i1 %cmp.n, label %._crit_edge.loopexit, label %vec.epilog.iter.check

vec.epilog.iter.check:                            ; preds = %middle.block
  %n.vec.remaining = and i64 %wide.trip.count, 24
  %min.epilog.iters.check = icmp eq i64 %n.vec.remaining, 0
  br i1 %min.epilog.iters.check, label %.lr.ph.preheader, label %vec.epilog.ph

vec.epilog.ph:                                    ; preds = %vector.main.loop.iter.check, %vec.epilog.iter.check
  %vec.epilog.resume.val = phi i64 [ %n.vec, %vec.epilog.iter.check ], [ 0, %vector.main.loop.iter.check ]
  %n.vec21 = and i64 %wide.trip.count, 2147483640
  br label %vec.epilog.vector.body

vec.epilog.vector.body:                           ; preds = %vec.epilog.vector.body, %vec.epilog.ph
  %index22 = phi i64 [ %vec.epilog.resume.val, %vec.epilog.ph ], [ %index.next24, %vec.epilog.vector.body ]
  %15 = getelementptr inbounds i8, ptr %0, i64 %index22
  %wide.load23 = load <8 x i8>, ptr %15, align 1, !tbaa !5
  %16 = getelementptr inbounds i8, ptr %2, i64 %index22
  store <8 x i8> %wide.load23, ptr %16, align 1, !tbaa !5
  %index.next24 = add nuw i64 %index22, 8
  %17 = icmp eq i64 %index.next24, %n.vec21
  br i1 %17, label %vec.epilog.middle.block, label %vec.epilog.vector.body, !llvm.loop !12

vec.epilog.middle.block:                          ; preds = %vec.epilog.vector.body
  %cmp.n25 = icmp eq i64 %n.vec21, %wide.trip.count
  br i1 %cmp.n25, label %._crit_edge.loopexit, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %vec.epilog.middle.block, %iter.check, %vec.epilog.iter.check
  %indvars.iv.ph = phi i64 [ 0, %iter.check ], [ %n.vec, %vec.epilog.iter.check ], [ %n.vec21, %vec.epilog.middle.block ]
  %xtraiter = and i64 %wide.trip.count, 3
  %lcmp.mod.not = icmp eq i64 %xtraiter, 0
  br i1 %lcmp.mod.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol

.lr.ph.prol:                                      ; preds = %.lr.ph.preheader, %.lr.ph.prol
  %indvars.iv.prol = phi i64 [ %indvars.iv.next.prol, %.lr.ph.prol ], [ %indvars.iv.ph, %.lr.ph.preheader ]
  %prol.iter = phi i64 [ %prol.iter.next, %.lr.ph.prol ], [ 0, %.lr.ph.preheader ]
  %18 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.prol
  %19 = load i8, ptr %18, align 1, !tbaa !5
  %20 = getelementptr inbounds i8, ptr %2, i64 %indvars.iv.prol
  store i8 %19, ptr %20, align 1, !tbaa !5
  %indvars.iv.next.prol = add nuw nsw i64 %indvars.iv.prol, 1
  %prol.iter.next = add i64 %prol.iter, 1
  %prol.iter.cmp.not = icmp eq i64 %prol.iter.next, %xtraiter
  br i1 %prol.iter.cmp.not, label %.lr.ph.prol.loopexit, label %.lr.ph.prol, !llvm.loop !13

.lr.ph.prol.loopexit:                             ; preds = %.lr.ph.prol, %.lr.ph.preheader
  %indvars.iv.unr = phi i64 [ %indvars.iv.ph, %.lr.ph.preheader ], [ %indvars.iv.next.prol, %.lr.ph.prol ]
  %21 = sub nsw i64 %indvars.iv.ph, %wide.trip.count
  %22 = icmp ugt i64 %21, -4
  br i1 %22, label %._crit_edge.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph.prol.loopexit, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next.3, %.lr.ph ], [ %indvars.iv.unr, %.lr.ph.prol.loopexit ]
  %23 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv
  %24 = load i8, ptr %23, align 1, !tbaa !5
  %25 = getelementptr inbounds i8, ptr %2, i64 %indvars.iv
  store i8 %24, ptr %25, align 1, !tbaa !5
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %26 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next
  %27 = load i8, ptr %26, align 1, !tbaa !5
  %28 = getelementptr inbounds i8, ptr %2, i64 %indvars.iv.next
  store i8 %27, ptr %28, align 1, !tbaa !5
  %indvars.iv.next.1 = add nuw nsw i64 %indvars.iv, 2
  %29 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next.1
  %30 = load i8, ptr %29, align 1, !tbaa !5
  %31 = getelementptr inbounds i8, ptr %2, i64 %indvars.iv.next.1
  store i8 %30, ptr %31, align 1, !tbaa !5
  %indvars.iv.next.2 = add nuw nsw i64 %indvars.iv, 3
  %32 = getelementptr inbounds i8, ptr %0, i64 %indvars.iv.next.2
  %33 = load i8, ptr %32, align 1, !tbaa !5
  %34 = getelementptr inbounds i8, ptr %2, i64 %indvars.iv.next.2
  store i8 %33, ptr %34, align 1, !tbaa !5
  %indvars.iv.next.3 = add nuw nsw i64 %indvars.iv, 4
  %exitcond.not.3 = icmp eq i64 %indvars.iv.next.3, %wide.trip.count
  br i1 %exitcond.not.3, label %._crit_edge.loopexit, label %.lr.ph, !llvm.loop !15

._crit_edge.loopexit:                             ; preds = %.lr.ph.prol.loopexit, %.lr.ph, %vec.epilog.middle.block, %middle.block
  %35 = zext nneg i32 %4 to i64
  br label %._crit_edge

._crit_edge:                                      ; preds = %._crit_edge.loopexit, %3
  %.0.lcssa = phi i64 [ 0, %3 ], [ %35, %._crit_edge.loopexit ]
  br i1 %.not.not, label %41, label %36

36:                                               ; preds = %._crit_edge
  %37 = getelementptr inbounds i8, ptr %0, i64 %.0.lcssa
  %38 = load i8, ptr %37, align 1, !tbaa !5
  %39 = select i1 %narrow, i8 %38, i8 0
  %40 = getelementptr inbounds i8, ptr %2, i64 %.0.lcssa
  store i8 %39, ptr %40, align 1, !tbaa !5
  br label %41

41:                                               ; preds = %36, %._crit_edge
  ret void
}

attributes #0 = { nofree norecurse nosync nounwind 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"}
!8 = distinct !{!8, !9, !10, !11}
!9 = !{!"llvm.loop.mustprogress"}
!10 = !{!"llvm.loop.isvectorized", i32 1}
!11 = !{!"llvm.loop.unroll.runtime.disable"}
!12 = distinct !{!12, !9, !10, !11}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.unroll.disable"}
!15 = distinct !{!15, !9, !10}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LoopLoadEliminationPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,LoopVectorizePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass