; LLVM IR from yudi-matsuzake/libgenerics :: doc/examples (stack0)

; 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.stack_t = type { i64, i64, ptr }

@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [9 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local i32 @main() #0 {
  %1 = alloca i32, align 4
  %2 = alloca %struct.stack_t, align 8
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 0, ptr %1, align 4
  %6 = call i64 @time(ptr noundef null) #4
  %7 = trunc i64 %6 to i32
  call void @srand(i32 noundef %7) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr %2) #4
  %8 = call i32 @stack_create(ptr noundef %2, i64 noundef 4)
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #4
  store i32 0, ptr %3, align 4, !tbaa !5
  br label %9

9:                                                ; preds = %18, %0
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = icmp slt i32 %10, 10
  br i1 %11, label %12, label %21

12:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  %13 = call i32 @rand() #4
  %14 = srem i32 %13, 10
  store i32 %14, ptr %4, align 4, !tbaa !5
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = call i32 (ptr, ...) @printf(ptr noundef @.str, i32 noundef %15)
  %17 = call i32 @stack_push(ptr noundef %2, ptr noundef %4)
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  br label %18

18:                                               ; preds = %12
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = add nsw i32 %19, 1
  store i32 %20, ptr %3, align 4, !tbaa !5
  br label %9, !llvm.loop !9

21:                                               ; preds = %9
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #4
  br label %22

22:                                               ; preds = %25, %21
  %23 = call i32 @stack_pop(ptr noundef %2, ptr noundef %5)
  %24 = icmp eq i32 %23, 0
  br i1 %24, label %25, label %28

25:                                               ; preds = %22
  %26 = load i32, ptr %5, align 4, !tbaa !5
  %27 = call i32 (ptr, ...) @printf(ptr noundef @.str.1, i32 noundef %26)
  br label %22, !llvm.loop !11

28:                                               ; preds = %22
  %29 = call i32 @stack_destroy(ptr noundef %2)
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #4
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #4
  call void @llvm.lifetime.end.p0(i64 24, ptr %2) #4
  ret i32 0
}

; Function Attrs: nounwind
declare void @srand(i32 noundef) #1

; Function Attrs: nounwind
declare i64 @time(ptr noundef) #1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare i32 @stack_create(ptr noundef, i64 noundef) #3

; Function Attrs: nounwind
declare i32 @rand() #1

declare i32 @printf(ptr noundef, ...) #3

declare i32 @stack_push(ptr noundef, ptr noundef) #3

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

declare i32 @stack_pop(ptr noundef, ptr noundef) #3

declare i32 @stack_destroy(ptr noundef) #3

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 = { nounwind "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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 #4 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; 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"

%struct.stack_t = type { i64, i64, ptr }

@.str = external hidden unnamed_addr constant [10 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [9 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef i32 @main() local_unnamed_addr #0 {
  %1 = alloca %struct.stack_t, align 8
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = tail call i64 @time(ptr noundef null) #5
  %5 = trunc i64 %4 to i32
  tail call void @srand(i32 noundef %5) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %1) #5
  %6 = call i32 @stack_create(ptr noundef nonnull %1, i64 noundef 4) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %7 = call i32 @rand() #5
  %8 = srem i32 %7, 10
  store i32 %8, ptr %2, align 4, !tbaa !5
  %9 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %8)
  %10 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %11 = call i32 @rand() #5
  %12 = srem i32 %11, 10
  store i32 %12, ptr %2, align 4, !tbaa !5
  %13 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %12)
  %14 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %15 = call i32 @rand() #5
  %16 = srem i32 %15, 10
  store i32 %16, ptr %2, align 4, !tbaa !5
  %17 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %16)
  %18 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %19 = call i32 @rand() #5
  %20 = srem i32 %19, 10
  store i32 %20, ptr %2, align 4, !tbaa !5
  %21 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %20)
  %22 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %23 = call i32 @rand() #5
  %24 = srem i32 %23, 10
  store i32 %24, ptr %2, align 4, !tbaa !5
  %25 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %24)
  %26 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %27 = call i32 @rand() #5
  %28 = srem i32 %27, 10
  store i32 %28, ptr %2, align 4, !tbaa !5
  %29 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %28)
  %30 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %31 = call i32 @rand() #5
  %32 = srem i32 %31, 10
  store i32 %32, ptr %2, align 4, !tbaa !5
  %33 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %32)
  %34 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %35 = call i32 @rand() #5
  %36 = srem i32 %35, 10
  store i32 %36, ptr %2, align 4, !tbaa !5
  %37 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %36)
  %38 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %39 = call i32 @rand() #5
  %40 = srem i32 %39, 10
  store i32 %40, ptr %2, align 4, !tbaa !5
  %41 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %40)
  %42 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %2) #5
  %43 = call i32 @rand() #5
  %44 = srem i32 %43, 10
  store i32 %44, ptr %2, align 4, !tbaa !5
  %45 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str, i32 noundef %44)
  %46 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef nonnull %2) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %2) #5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #5
  %47 = call i32 @stack_pop(ptr noundef nonnull %1, ptr noundef nonnull %3) #5
  %48 = icmp eq i32 %47, 0
  br i1 %48, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %.lr.ph
  %49 = load i32, ptr %3, align 4, !tbaa !5
  %50 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1, i32 noundef %49)
  %51 = call i32 @stack_pop(ptr noundef nonnull %1, ptr noundef nonnull %3) #5
  %52 = icmp eq i32 %51, 0
  br i1 %52, label %.lr.ph, label %._crit_edge, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %0
  %53 = call i32 @stack_destroy(ptr noundef nonnull %1) #5
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #5
  call void @llvm.lifetime.end.p0(i64 24, ptr nonnull %1) #5
  ret i32 0
}

; Function Attrs: nounwind
declare void @srand(i32 noundef) local_unnamed_addr #1

; Function Attrs: nounwind
declare i64 @time(ptr noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #2

declare i32 @stack_create(ptr noundef, i64 noundef) local_unnamed_addr #3

; Function Attrs: nounwind
declare i32 @rand() local_unnamed_addr #1

; Function Attrs: nofree nounwind
declare noundef i32 @printf(ptr nocapture noundef readonly, ...) local_unnamed_addr #4

declare i32 @stack_push(ptr noundef, ptr noundef) local_unnamed_addr #3

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #2

declare i32 @stack_pop(ptr noundef, ptr noundef) local_unnamed_addr #3

declare i32 @stack_destroy(ptr noundef) local_unnamed_addr #3

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 = { nounwind "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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #3 = { "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 #4 = { nofree nounwind "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 #5 = { 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass