; LLVM IR from AdrianWR/push_swap :: src/push_swap (smart)

; 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.s_stack = type { i32, i32, ptr }

@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1

; 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

declare void @run_n(ptr noundef, ptr noundef, ptr noundef, i32 noundef) #1

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

10:                                               ; preds = %25, %2
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = getelementptr inbounds %struct.s_stack, ptr %11, i32 0, i32 2
  %13 = load ptr, ptr %12, align 8, !tbaa !13
  %14 = load i32, ptr %5, align 4, !tbaa !9
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds i32, ptr %13, i64 %15
  %17 = load i32, ptr %16, align 4, !tbaa !9
  %18 = load i32, ptr %4, align 4, !tbaa !9
  %19 = icmp ne i32 %17, %18
  br i1 %19, label %20, label %23

20:                                               ; preds = %10
  %21 = load i32, ptr %5, align 4, !tbaa !9
  %22 = icmp sge i32 %21, 0
  br label %23

23:                                               ; preds = %20, %10
  %24 = phi i1 [ false, %10 ], [ %22, %20 ]
  br i1 %24, label %25, label %28

25:                                               ; preds = %23
  %26 = load i32, ptr %5, align 4, !tbaa !9
  %27 = add nsw i32 %26, -1
  store i32 %27, ptr %5, align 4, !tbaa !9
  br label %10, !llvm.loop !14

28:                                               ; preds = %23
  %29 = load i32, ptr %5, align 4, !tbaa !9
  %30 = icmp slt i32 %29, 0
  br i1 %30, label %31, label %32

31:                                               ; preds = %28
  store i32 1, ptr %6, align 4
  br label %52

32:                                               ; preds = %28
  %33 = load i32, ptr %5, align 4, !tbaa !9
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.s_stack, ptr %34, i32 0, i32 0
  %36 = load i32, ptr %35, align 8, !tbaa !11
  %37 = sdiv i32 %36, 2
  %38 = icmp slt i32 %33, %37
  br i1 %38, label %39, label %43

39:                                               ; preds = %32
  %40 = load ptr, ptr %3, align 8, !tbaa !5
  %41 = load i32, ptr %5, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  call void @run_n(ptr noundef @.str.2, ptr noundef null, ptr noundef %40, i32 noundef %42)
  br label %50

43:                                               ; preds = %32
  %44 = load ptr, ptr %3, align 8, !tbaa !5
  %45 = load ptr, ptr %3, align 8, !tbaa !5
  %46 = getelementptr inbounds %struct.s_stack, ptr %45, i32 0, i32 0
  %47 = load i32, ptr %46, align 8, !tbaa !11
  %48 = load i32, ptr %5, align 4, !tbaa !9
  %49 = sub nsw i32 %47, %48
  call void @run_n(ptr noundef @.str.3, ptr noundef null, ptr noundef %44, i32 noundef %49)
  br label %50

50:                                               ; preds = %43, %39
  br label %51

51:                                               ; preds = %50
  store i32 0, ptr %6, align 4
  br label %52

52:                                               ; preds = %51, %31
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #3
  %53 = load i32, ptr %6, align 4
  switch i32 %53, label %55 [
    i32 0, label %54
    i32 1, label %54
  ]

54:                                               ; preds = %52, %52
  ret void

55:                                               ; preds = %52
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { "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 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 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 0}
!12 = !{!"s_stack", !10, i64 0, !10, i64 4, !6, i64 8}
!13 = !{!12, !6, i64 8}
!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"

@.str.2 = external hidden unnamed_addr constant [4 x i8], align 1
@.str.3 = external hidden unnamed_addr constant [3 x i8], align 1

declare void @run_n(ptr noundef, ptr noundef, ptr noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local void @smart_rotate_b(ptr noundef %0, i32 noundef %1) local_unnamed_addr #1 {
  %3 = load i32, ptr %0, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 8
  %5 = load ptr, ptr %4, align 8, !tbaa !11
  %6 = sext i32 %3 to i64
  br label %7

7:                                                ; preds = %7, %2
  %indvars.iv = phi i64 [ %indvars.iv.next, %7 ], [ %6, %2 ]
  %8 = getelementptr inbounds i32, ptr %5, i64 %indvars.iv
  %9 = load i32, ptr %8, align 4, !tbaa !12
  %10 = icmp ne i32 %9, %1
  %11 = icmp sgt i64 %indvars.iv, -1
  %12 = and i1 %11, %10
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  br i1 %12, label %7, label %13, !llvm.loop !13

13:                                               ; preds = %7
  %14 = trunc nsw i64 %indvars.iv to i32
  %15 = icmp slt i64 %indvars.iv, 0
  br i1 %15, label %23, label %16

16:                                               ; preds = %13
  %17 = sdiv i32 %3, 2
  %18 = icmp sgt i32 %17, %14
  br i1 %18, label %19, label %21

19:                                               ; preds = %16
  %20 = add nuw nsw i32 %14, 1
  tail call void @run_n(ptr noundef nonnull @.str.2, ptr noundef null, ptr noundef nonnull %0, i32 noundef %20) #2
  br label %23

21:                                               ; preds = %16
  %22 = sub nsw i32 %3, %14
  tail call void @run_n(ptr noundef nonnull @.str.3, ptr noundef null, ptr noundef nonnull %0, i32 noundef %22) #2
  br label %23

23:                                               ; preds = %21, %19, %13
  ret void
}

attributes #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 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, !7, i64 0}
!6 = !{!"s_stack", !7, i64 0, !7, i64 4, !10, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C/C++ TBAA"}
!10 = !{!"any pointer", !8, i64 0}
!11 = !{!6, !10, i64 8}
!12 = !{!7, !7, i64 0}
!13 = distinct !{!13, !14}
!14 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,LCSSAPass,LICMPass,LoopRotatePass,LoopUnrollPass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass