; LLVM IR from brpapa/algorithms :: solutions/live-archive/2883.ll (Z11hasSomePawnPi)

; 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 nounwind uwtable
define dso_local noundef zeroext i1 @_Z11hasSomePawnPi(ptr noundef %0) #1 {
  %2 = alloca i1, align 1
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #2
  store i32 0, ptr %4, align 4, !tbaa !9
  br label %6

6:                                                ; preds = %19, %1
  %7 = load i32, ptr %4, align 4, !tbaa !9
  %8 = icmp slt i32 %7, 8
  br i1 %8, label %10, label %9

9:                                                ; preds = %6
  store i32 2, ptr %5, align 4
  br label %22

10:                                               ; preds = %6
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = load i32, ptr %4, align 4, !tbaa !9
  %13 = sext i32 %12 to i64
  %14 = getelementptr inbounds i32, ptr %11, i64 %13
  %15 = load i32, ptr %14, align 4, !tbaa !9
  %16 = icmp ne i32 %15, -1
  br i1 %16, label %17, label %18

17:                                               ; preds = %10
  store i1 true, ptr %2, align 1
  store i32 1, ptr %5, align 4
  br label %22

18:                                               ; preds = %10
  br label %19

19:                                               ; preds = %18
  %20 = load i32, ptr %4, align 4, !tbaa !9
  %21 = add nsw i32 %20, 1
  store i32 %21, ptr %4, align 4, !tbaa !9
  br label %6, !llvm.loop !11

22:                                               ; preds = %17, %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #2
  %23 = load i32, ptr %5, align 4
  switch i32 %23, label %27 [
    i32 2, label %24
    i32 1, label %25
  ]

24:                                               ; preds = %22
  store i1 false, ptr %2, align 1
  br label %25

25:                                               ; preds = %24, %22
  %26 = load i1, ptr %2, align 1
  ret i1 %26

27:                                               ; preds = %22
  unreachable
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { mustprogress 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, !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 nofree norecurse nosync nounwind willreturn memory(argmem: read) uwtable
define dso_local noundef zeroext i1 @_Z11hasSomePawnPi(ptr nocapture noundef readonly %0) local_unnamed_addr #0 {
  %2 = load i32, ptr %0, align 4, !tbaa !5
  %.not = icmp eq i32 %2, -1
  br i1 %.not, label %3, label %24

3:                                                ; preds = %1
  %4 = getelementptr inbounds i8, ptr %0, i64 4
  %5 = load i32, ptr %4, align 4, !tbaa !5
  %.not.1 = icmp eq i32 %5, -1
  br i1 %.not.1, label %6, label %24

6:                                                ; preds = %3
  %7 = getelementptr inbounds i8, ptr %0, i64 8
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %.not.2 = icmp eq i32 %8, -1
  br i1 %.not.2, label %9, label %24

9:                                                ; preds = %6
  %10 = getelementptr inbounds i8, ptr %0, i64 12
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %.not.3 = icmp eq i32 %11, -1
  br i1 %.not.3, label %12, label %24

12:                                               ; preds = %9
  %13 = getelementptr inbounds i8, ptr %0, i64 16
  %14 = load i32, ptr %13, align 4, !tbaa !5
  %.not.4 = icmp eq i32 %14, -1
  br i1 %.not.4, label %15, label %24

15:                                               ; preds = %12
  %16 = getelementptr inbounds i8, ptr %0, i64 20
  %17 = load i32, ptr %16, align 4, !tbaa !5
  %.not.5 = icmp eq i32 %17, -1
  br i1 %.not.5, label %18, label %24

18:                                               ; preds = %15
  %19 = getelementptr inbounds i8, ptr %0, i64 24
  %20 = load i32, ptr %19, align 4, !tbaa !5
  %.not.6 = icmp eq i32 %20, -1
  br i1 %.not.6, label %21, label %24

21:                                               ; preds = %18
  %22 = getelementptr inbounds i8, ptr %0, i64 28
  %23 = load i32, ptr %22, align 4, !tbaa !5
  %.not.7 = icmp ne i32 %23, -1
  br label %24

24:                                               ; preds = %21, %18, %15, %12, %9, %6, %3, %1
  %.lcssa = phi i1 [ true, %1 ], [ true, %3 ], [ true, %6 ], [ true, %9 ], [ true, %12 ], [ true, %15 ], [ true, %18 ], [ %.not.7, %21 ]
  ret i1 %.lcssa
}

attributes #0 = { mustprogress nofree norecurse nosync nounwind willreturn 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++ TBAA"}


; Effective O3 passes: CorrelatedValuePropagationPass,GVNPass,GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,LCSSAPass,LoopRotatePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass