; LLVM IR from sympiler/nasoq :: src/nasoq_step.ll (ZN5nasoq9NasoqStep11solve_stepsEi)

; 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: 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

; Function Attrs: mustprogress uwtable
declare dso_local noundef i32 @_ZN5nasoq9NasoqStep10solve_stepEv(ptr noundef nonnull align 8 dereferenceable(684)) #1 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN5nasoq9NasoqStep11solve_stepsEi(ptr noundef nonnull align 8 dereferenceable(684) %0, i32 noundef %1) #1 align 2 {
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !9
  %8 = load ptr, ptr %3, align 8
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  store i32 4, ptr %5, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %9

9:                                                ; preds = %20, %2
  %10 = load i32, ptr %6, align 4, !tbaa !9
  %11 = load i32, ptr %4, align 4, !tbaa !9
  %12 = icmp slt i32 %10, %11
  br i1 %12, label %14, label %13

13:                                               ; preds = %9
  store i32 2, ptr %7, align 4
  br label %23

14:                                               ; preds = %9
  %15 = call noundef i32 @_ZN5nasoq9NasoqStep10solve_stepEv(ptr noundef nonnull align 8 dereferenceable(684) %8)
  store i32 %15, ptr %5, align 4, !tbaa !9
  %16 = load i32, ptr %5, align 4, !tbaa !9
  %17 = icmp ne i32 %16, 4
  br i1 %17, label %18, label %19

18:                                               ; preds = %14
  store i32 2, ptr %7, align 4
  br label %23

19:                                               ; preds = %14
  br label %20

20:                                               ; preds = %19
  %21 = load i32, ptr %6, align 4, !tbaa !9
  %22 = add nsw i32 %21, 1
  store i32 %22, ptr %6, align 4, !tbaa !9
  br label %9, !llvm.loop !11

23:                                               ; preds = %18, %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %24

24:                                               ; preds = %23
  %25 = load i32, ptr %5, align 4, !tbaa !9
  store i32 1, ptr %7, align 4
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  ret i32 %25
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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, !6, i64 0}
!6 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"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: mustprogress uwtable
declare dso_local noundef i32 @_ZN5nasoq9NasoqStep10solve_stepEv(ptr noundef nonnull align 8 dereferenceable(684)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
define dso_local noundef i32 @_ZN5nasoq9NasoqStep11solve_stepsEi(ptr noundef nonnull align 8 dereferenceable(684) %0, i32 noundef %1) local_unnamed_addr #0 align 2 {
  %3 = icmp sgt i32 %1, 0
  br i1 %3, label %.lr.ph, label %._crit_edge

4:                                                ; preds = %.lr.ph
  %5 = add nuw nsw i32 %.08, 1
  %exitcond.not = icmp eq i32 %5, %1
  br i1 %exitcond.not, label %._crit_edge, label %.lr.ph, !llvm.loop !5

.lr.ph:                                           ; preds = %2, %4
  %.08 = phi i32 [ %5, %4 ], [ 0, %2 ]
  %6 = tail call noundef i32 @_ZN5nasoq9NasoqStep10solve_stepEv(ptr noundef nonnull align 8 dereferenceable(684) %0)
  %.not = icmp eq i32 %6, 4
  br i1 %.not, label %4, label %._crit_edge

._crit_edge:                                      ; preds = %4, %.lr.ph, %2
  %.1 = phi i32 [ 4, %2 ], [ %6, %.lr.ph ], [ 4, %4 ]
  ret i32 %.1
}

attributes #0 = { mustprogress 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: GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass