; LLVM IR from LlimaV10/doom-nukem_v2 :: libft (ft_sqrt)

; 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 i32 @ft_sqrt(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  %6 = load i32, ptr %3, align 4, !tbaa !5
  %7 = icmp sle i32 %6, 0
  br i1 %7, label %8, label %9

8:                                                ; preds = %1
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %32

9:                                                ; preds = %1
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = icmp eq i32 %10, 1
  br i1 %11, label %12, label %13

12:                                               ; preds = %9
  store i32 1, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %32

13:                                               ; preds = %9
  store i32 2, ptr %4, align 4, !tbaa !5
  br label %14

14:                                               ; preds = %28, %13
  %15 = load i32, ptr %4, align 4, !tbaa !5
  %16 = load i32, ptr %4, align 4, !tbaa !5
  %17 = mul nsw i32 %15, %16
  %18 = load i32, ptr %3, align 4, !tbaa !5
  %19 = icmp sle i32 %17, %18
  br i1 %19, label %20, label %31

20:                                               ; preds = %14
  %21 = load i32, ptr %4, align 4, !tbaa !5
  %22 = load i32, ptr %4, align 4, !tbaa !5
  %23 = mul nsw i32 %21, %22
  %24 = load i32, ptr %3, align 4, !tbaa !5
  %25 = icmp eq i32 %23, %24
  br i1 %25, label %26, label %28

26:                                               ; preds = %20
  %27 = load i32, ptr %4, align 4, !tbaa !5
  store i32 %27, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %32

28:                                               ; preds = %20
  %29 = load i32, ptr %4, align 4, !tbaa !5
  %30 = add nsw i32 %29, 1
  store i32 %30, ptr %4, align 4, !tbaa !5
  br label %14, !llvm.loop !9

31:                                               ; preds = %14
  store i32 0, ptr %2, align 4
  store i32 1, ptr %5, align 4
  br label %32

32:                                               ; preds = %31, %26, %12, %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %33 = load i32, ptr %2, align 4
  ret i32 %33
}

; 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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = distinct !{!9, !10}
!10 = !{!"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(none) uwtable
define dso_local i32 @ft_sqrt(i32 noundef %0) local_unnamed_addr #0 {
  %2 = icmp slt i32 %0, 1
  br i1 %2, label %.loopexit, label %3

3:                                                ; preds = %1
  %4 = icmp eq i32 %0, 1
  br i1 %4, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %3
  %.not14 = icmp ult i32 %0, 4
  br i1 %.not14, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %7
  %5 = phi i32 [ %9, %7 ], [ 4, %.preheader ]
  %.015 = phi i32 [ %8, %7 ], [ 2, %.preheader ]
  %6 = icmp eq i32 %5, %0
  br i1 %6, label %.loopexit, label %7

7:                                                ; preds = %.lr.ph
  %8 = add nuw nsw i32 %.015, 1
  %9 = mul nuw nsw i32 %8, %8
  %.not = icmp sgt i32 %9, %0
  br i1 %.not, label %.loopexit, label %.lr.ph, !llvm.loop !5

.loopexit:                                        ; preds = %.lr.ph, %7, %.preheader, %3, %1
  %.011 = phi i32 [ 0, %1 ], [ 1, %3 ], [ 0, %.preheader ], [ %.015, %.lr.ph ], [ 0, %7 ]
  ret i32 %.011
}

attributes #0 = { nofree norecurse nosync nounwind memory(none) 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 = distinct !{!5, !6}
!6 = !{!"llvm.loop.mustprogress"}


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