; LLVM IR from yudi-matsuzake/libgenerics :: doc/examples (stack1)

; 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 [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 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
  store i32 0, ptr %1, align 4
  %3 = call i64 @time(ptr noundef null) #4
  %4 = trunc i64 %3 to i32
  call void @srand(i32 noundef %4) #4
  call void @llvm.lifetime.start.p0(i64 24, ptr %2) #4
  %5 = call i32 @stack_create(ptr noundef %2, i64 noundef 0)
  %6 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  %7 = call i32 @stack_push(ptr noundef %2, ptr noundef null)
  br label %8

8:                                                ; preds = %19, %0
  %9 = call i32 @stack_pop(ptr noundef %2, ptr noundef null)
  %10 = icmp eq i32 %9, 0
  br i1 %10, label %11, label %20

11:                                               ; preds = %8
  %12 = call i32 (ptr, ...) @printf(ptr noundef @.str.1)
  %13 = call i32 @rand() #4
  %14 = srem i32 %13, 10
  %15 = icmp slt i32 %14, 6
  br i1 %15, label %16, label %19

16:                                               ; preds = %11
  %17 = call i32 (ptr, ...) @printf(ptr noundef @.str)
  %18 = call i32 @stack_push(ptr noundef %2, ptr noundef null)
  br label %19

19:                                               ; preds = %16, %11
  br label %8, !llvm.loop !5

20:                                               ; preds = %8
  %21 = call i32 @stack_destroy(ptr noundef %2)
  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

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

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

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

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

declare i32 @stack_destroy(ptr noundef) #3

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

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 = distinct !{!5, !6}
!6 = !{!"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"

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

@.str = external hidden unnamed_addr constant [6 x i8], align 1
@.str.1 = external hidden unnamed_addr constant [5 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 = tail call i64 @time(ptr noundef null) #5
  %3 = trunc i64 %2 to i32
  tail call void @srand(i32 noundef %3) #5
  call void @llvm.lifetime.start.p0(i64 24, ptr nonnull %1) #5
  %4 = call i32 @stack_create(ptr noundef nonnull %1, i64 noundef 0) #5
  %5 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %6 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef null) #5
  %7 = call i32 @stack_pop(ptr noundef nonnull %1, ptr noundef null) #5
  %8 = icmp eq i32 %7, 0
  br i1 %8, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %0, %16
  %9 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str.1)
  %10 = call i32 @rand() #5
  %11 = srem i32 %10, 10
  %12 = icmp slt i32 %11, 6
  br i1 %12, label %13, label %16

13:                                               ; preds = %.lr.ph
  %14 = call i32 (ptr, ...) @printf(ptr noundef nonnull dereferenceable(1) @.str)
  %15 = call i32 @stack_push(ptr noundef nonnull %1, ptr noundef null) #5
  br label %16

16:                                               ; preds = %13, %.lr.ph
  %17 = call i32 @stack_pop(ptr noundef nonnull %1, ptr noundef null) #5
  %18 = icmp eq i32 %17, 0
  br i1 %18, label %.lr.ph, label %._crit_edge, !llvm.loop !5

._crit_edge:                                      ; preds = %16, %0
  %19 = call i32 @stack_destroy(ptr noundef nonnull %1) #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: 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

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

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

declare i32 @stack_destroy(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

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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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