; LLVM IR from lolosssss/leetcode :: c (55_jump_game)

; 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 zeroext i1 @canJump(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i1, align 1
  %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
  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
  call void @llvm.lifetime.start.p0(i64 4, ptr %7) #2
  store i32 0, ptr %7, align 4, !tbaa !9
  %9 = load i32, ptr %5, align 4, !tbaa !9
  %10 = icmp eq i32 %9, 1
  br i1 %10, label %11, label %12

11:                                               ; preds = %2
  store i1 true, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %53

12:                                               ; preds = %2
  store i32 0, ptr %6, align 4, !tbaa !9
  br label %13

13:                                               ; preds = %49, %12
  %14 = load i32, ptr %6, align 4, !tbaa !9
  %15 = load i32, ptr %5, align 4, !tbaa !9
  %16 = sub nsw i32 %15, 1
  %17 = icmp slt i32 %14, %16
  br i1 %17, label %18, label %52

18:                                               ; preds = %13
  %19 = load i32, ptr %7, align 4, !tbaa !9
  %20 = load i32, ptr %6, align 4, !tbaa !9
  %21 = icmp sge i32 %19, %20
  br i1 %21, label %22, label %47

22:                                               ; preds = %18
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !9
  %25 = sext i32 %24 to i64
  %26 = getelementptr inbounds i32, ptr %23, i64 %25
  %27 = load i32, ptr %26, align 4, !tbaa !9
  %28 = load i32, ptr %6, align 4, !tbaa !9
  %29 = add nsw i32 %27, %28
  %30 = load i32, ptr %7, align 4, !tbaa !9
  %31 = icmp sgt i32 %29, %30
  br i1 %31, label %32, label %40

32:                                               ; preds = %22
  %33 = load ptr, ptr %4, align 8, !tbaa !5
  %34 = load i32, ptr %6, align 4, !tbaa !9
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds i32, ptr %33, i64 %35
  %37 = load i32, ptr %36, align 4, !tbaa !9
  %38 = load i32, ptr %6, align 4, !tbaa !9
  %39 = add nsw i32 %37, %38
  store i32 %39, ptr %7, align 4, !tbaa !9
  br label %40

40:                                               ; preds = %32, %22
  %41 = load i32, ptr %7, align 4, !tbaa !9
  %42 = load i32, ptr %5, align 4, !tbaa !9
  %43 = sub nsw i32 %42, 1
  %44 = icmp sge i32 %41, %43
  br i1 %44, label %45, label %46

45:                                               ; preds = %40
  store i1 true, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %53

46:                                               ; preds = %40
  br label %48

47:                                               ; preds = %18
  store i1 false, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %53

48:                                               ; preds = %46
  br label %49

49:                                               ; preds = %48
  %50 = load i32, ptr %6, align 4, !tbaa !9
  %51 = add nsw i32 %50, 1
  store i32 %51, ptr %6, align 4, !tbaa !9
  br label %13, !llvm.loop !11

52:                                               ; preds = %13
  store i1 false, ptr %3, align 1
  store i32 1, ptr %8, align 4
  br label %53

53:                                               ; preds = %52, %47, %45, %11
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %54 = load i1, ptr %3, align 1
  ret i1 %54
}

; 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 noundef zeroext i1 @canJump(ptr nocapture noundef readonly %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp eq i32 %1, 1
  br i1 %3, label %.loopexit, label %.preheader

.preheader:                                       ; preds = %2
  %4 = add nsw i32 %1, -1
  %5 = icmp slt i32 %1, 2
  br i1 %5, label %.loopexit, label %.lr.ph.preheader

.lr.ph.preheader:                                 ; preds = %.preheader
  %6 = zext nneg i32 %4 to i64
  br label %.lr.ph

7:                                                ; preds = %.lr.ph
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %8 = icmp uge i64 %indvars.iv.next, %6
  %9 = zext nneg i32 %spec.select to i64
  %.not = icmp uge i64 %indvars.iv, %9
  %or.cond = or i1 %8, %.not
  br i1 %or.cond, label %.loopexit, label %.lr.ph, !llvm.loop !5

.lr.ph:                                           ; preds = %.lr.ph.preheader, %7
  %indvars.iv = phi i64 [ 0, %.lr.ph.preheader ], [ %indvars.iv.next, %7 ]
  %.022 = phi i32 [ 0, %.lr.ph.preheader ], [ %spec.select, %7 ]
  %10 = getelementptr inbounds i32, ptr %0, i64 %indvars.iv
  %11 = load i32, ptr %10, align 4, !tbaa !7
  %12 = trunc nuw nsw i64 %indvars.iv to i32
  %13 = add nsw i32 %11, %12
  %spec.select = tail call i32 @llvm.smax.i32(i32 %13, i32 %.022)
  %.not20.not = icmp sge i32 %spec.select, %4
  br i1 %.not20.not, label %.loopexit, label %7

.loopexit:                                        ; preds = %.lr.ph, %7, %.preheader, %2
  %.016 = phi i1 [ true, %2 ], [ false, %.preheader ], [ %.not20.not, %7 ], [ %.not20.not, %.lr.ph ]
  ret i1 %.016
}

; Function Attrs: nocallback nofree nosync nounwind speculatable willreturn memory(none)
declare i32 @llvm.smax.i32(i32, i32) #1

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" }
attributes #1 = { nocallback nofree nosync nounwind speculatable willreturn memory(none) }

!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"}
!7 = !{!8, !8, i64 0}
!8 = !{!"int", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C/C++ TBAA"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SCCPPass,SROAPass,SimplifyCFGPass,TailCallElimPass