; LLVM IR from gost-engine/engine :: gost_grasshopper_cipher (inc_counter)

; 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: nounwind uwtable
define dso_local void @inc_counter(ptr noundef %0, i64 noundef %1) #0 {
  %3 = alloca ptr, align 8
  %4 = alloca i64, align 8
  %5 = alloca i32, align 4
  %6 = alloca i8, align 1
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i64 %1, ptr %4, align 8, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %8 = load i64, ptr %4, align 8, !tbaa !9
  %9 = trunc i64 %8 to i32
  store i32 %9, ptr %5, align 4, !tbaa !11
  br label %10

10:                                               ; preds = %32, %2
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #2
  %11 = load i32, ptr %5, align 4, !tbaa !11
  %12 = add i32 %11, -1
  store i32 %12, ptr %5, align 4, !tbaa !11
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = load i32, ptr %5, align 4, !tbaa !11
  %15 = zext i32 %14 to i64
  %16 = getelementptr inbounds i8, ptr %13, i64 %15
  %17 = load i8, ptr %16, align 1, !tbaa !13
  store i8 %17, ptr %6, align 1, !tbaa !13
  %18 = load i8, ptr %6, align 1, !tbaa !13
  %19 = add i8 %18, 1
  store i8 %19, ptr %6, align 1, !tbaa !13
  %20 = load i8, ptr %6, align 1, !tbaa !13
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = load i32, ptr %5, align 4, !tbaa !11
  %23 = zext i32 %22 to i64
  %24 = getelementptr inbounds i8, ptr %21, i64 %23
  store i8 %20, ptr %24, align 1, !tbaa !13
  %25 = load i8, ptr %6, align 1, !tbaa !13
  %26 = icmp ne i8 %25, 0
  br i1 %26, label %27, label %28

27:                                               ; preds = %10
  store i32 1, ptr %7, align 4
  br label %29

28:                                               ; preds = %10
  store i32 0, ptr %7, align 4
  br label %29

29:                                               ; preds = %28, %27
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #2
  %30 = load i32, ptr %7, align 4
  switch i32 %30, label %36 [
    i32 0, label %31
  ]

31:                                               ; preds = %29
  br label %32

32:                                               ; preds = %31
  %33 = load i32, ptr %5, align 4, !tbaa !11
  %34 = icmp ne i32 %33, 0
  br i1 %34, label %10, label %35, !llvm.loop !14

35:                                               ; preds = %32
  store i32 0, ptr %7, align 4
  br label %36

36:                                               ; preds = %35, %29
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  %37 = load i32, ptr %7, align 4
  switch i32 %37, label %39 [
    i32 0, label %38
    i32 1, label %38
  ]

38:                                               ; preds = %36, %36
  ret void

39:                                               ; preds = %36
  unreachable
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 nosync nounwind willreturn memory(argmem: readwrite) }
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 = !{!"long", !7, i64 0}
!11 = !{!12, !12, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!7, !7, i64 0}
!14 = distinct !{!14, !15}
!15 = !{!"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 @inc_counter(ptr nocapture noundef %0, i64 noundef %1) local_unnamed_addr #0 {
  %3 = trunc i64 %1 to i32
  br label %4

4:                                                ; preds = %4, %2
  %.010 = phi i32 [ %3, %2 ], [ %5, %4 ]
  %5 = add i32 %.010, -1
  %6 = zext i32 %5 to i64
  %7 = getelementptr inbounds i8, ptr %0, i64 %6
  %8 = load i8, ptr %7, align 1, !tbaa !5
  %9 = add i8 %8, 1
  store i8 %9, ptr %7, align 1, !tbaa !5
  %.not = icmp ne i8 %9, 0
  %.not12 = icmp eq i32 %5, 0
  %or.cond = or i1 %.not12, %.not
  br i1 %or.cond, label %10, label %4, !llvm.loop !8

10:                                               ; preds = %4
  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}
!9 = !{!"llvm.loop.mustprogress"}


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