; LLVM IR from LeetCode-in-C/LeetCode-in-C :: src/main/c/g0001_0100/s0045_jump_game_ii (Solution)

; 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 @jump(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  %8 = alloca i32, align 4
  %9 = alloca i32, align 4
  %10 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, 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
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %8) #2
  store i32 0, ptr %8, align 4, !tbaa !9
  call void @llvm.lifetime.start.p0(i64 4, ptr %9) #2
  store i32 0, ptr %9, align 4, !tbaa !9
  br label %11

11:                                               ; preds = %52, %2
  %12 = load i32, ptr %9, align 4, !tbaa !9
  %13 = load i32, ptr %5, align 4, !tbaa !9
  %14 = sub nsw i32 %13, 1
  %15 = icmp slt i32 %12, %14
  br i1 %15, label %17, label %16

16:                                               ; preds = %11
  store i32 2, ptr %10, align 4
  br label %55

17:                                               ; preds = %11
  %18 = load i32, ptr %6, align 4, !tbaa !9
  %19 = add nsw i32 %18, -1
  store i32 %19, ptr %6, align 4, !tbaa !9
  %20 = load i32, ptr %7, align 4, !tbaa !9
  %21 = add nsw i32 %20, -1
  store i32 %21, ptr %7, align 4, !tbaa !9
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = load i32, ptr %9, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds i32, ptr %22, i64 %24
  %26 = load i32, ptr %25, align 4, !tbaa !9
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = icmp sgt i32 %26, %27
  br i1 %28, label %29, label %35

29:                                               ; preds = %17
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  %31 = load i32, ptr %9, align 4, !tbaa !9
  %32 = sext i32 %31 to i64
  %33 = getelementptr inbounds i32, ptr %30, i64 %32
  %34 = load i32, ptr %33, align 4, !tbaa !9
  store i32 %34, ptr %7, align 4, !tbaa !9
  br label %35

35:                                               ; preds = %29, %17
  %36 = load i32, ptr %6, align 4, !tbaa !9
  %37 = icmp sle i32 %36, 0
  br i1 %37, label %38, label %42

38:                                               ; preds = %35
  %39 = load i32, ptr %7, align 4, !tbaa !9
  store i32 %39, ptr %6, align 4, !tbaa !9
  %40 = load i32, ptr %8, align 4, !tbaa !9
  %41 = add nsw i32 %40, 1
  store i32 %41, ptr %8, align 4, !tbaa !9
  br label %42

42:                                               ; preds = %38, %35
  %43 = load i32, ptr %6, align 4, !tbaa !9
  %44 = load i32, ptr %5, align 4, !tbaa !9
  %45 = load i32, ptr %9, align 4, !tbaa !9
  %46 = sub nsw i32 %44, %45
  %47 = sub nsw i32 %46, 1
  %48 = icmp sge i32 %43, %47
  br i1 %48, label %49, label %51

49:                                               ; preds = %42
  %50 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %50, ptr %3, align 4
  store i32 1, ptr %10, align 4
  br label %55

51:                                               ; preds = %42
  br label %52

52:                                               ; preds = %51
  %53 = load i32, ptr %9, align 4, !tbaa !9
  %54 = add nsw i32 %53, 1
  store i32 %54, ptr %9, align 4, !tbaa !9
  br label %11, !llvm.loop !11

55:                                               ; preds = %49, %16
  call void @llvm.lifetime.end.p0(i64 4, ptr %9) #2
  %56 = load i32, ptr %10, align 4
  switch i32 %56, label %59 [
    i32 2, label %57
  ]

57:                                               ; preds = %55
  %58 = load i32, ptr %8, align 4, !tbaa !9
  store i32 %58, ptr %3, align 4
  store i32 1, ptr %10, align 4
  br label %59

59:                                               ; preds = %57, %55
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %60 = load i32, ptr %3, align 4
  ret i32 %60
}

; 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 = !{!"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 = 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: nofree norecurse nosync nounwind memory(argmem: read) uwtable
define dso_local i32 @jump(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %.not3133 = icmp sgt i32 %1, 1
  br i1 %.not3133, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %3 = add nsw i32 %1, -1
  %wide.trip.count = zext nneg i32 %3 to i64
  br label %.lr.ph

.lr.ph:                                           ; preds = %.lr.ph, %.lr.ph.preheader
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %.lr.ph ]
  %.02036 = phi i32 [ 0, %.lr.ph.preheader ], [ %.1, %.lr.ph ]
  %.02135 = phi i32 [ 0, %.lr.ph.preheader ], [ %spec.select, %.lr.ph ]
  %.02334 = phi i32 [ 0, %.lr.ph.preheader ], [ %.124, %.lr.ph ]
  %4 = add nsw i32 %.02334, -1
  %5 = add nsw i32 %.02135, -1
  %6 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %.not = icmp slt i32 %7, %.02135
  %spec.select = select i1 %.not, i32 %5, i32 %7
  %8 = icmp slt i32 %.02334, 2
  %.124 = select i1 %8, i32 %spec.select, i32 %4
  %9 = zext i1 %8 to i32
  %.1 = add nuw nsw i32 %.02036, %9
  %10 = trunc nuw nsw i64 %indvars.iv to i32
  %11 = xor i32 %10, -1
  %12 = add nsw i32 %11, %1
  %.not30 = icmp sge i32 %.124, %12
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %exitcond.not = icmp eq i64 %indvars.iv.next, %wide.trip.count
  %or.cond = select i1 %.not30, i1 true, i1 %exitcond.not
  br i1 %or.cond, label %._crit_edge, label %.lr.ph, !llvm.loop !9

._crit_edge:                                      ; preds = %.lr.ph, %2
  %spec.select32 = phi i32 [ 0, %2 ], [ %.1, %.lr.ph ]
  ret i32 %spec.select32
}

attributes #0 = { nofree norecurse nosync nounwind memory(argmem: read) 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 = !{!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: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass