; LLVM IR from tangjz/acm-icpc :: lydsy/1452.ll (Z3sumPA300_iii)

; 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 i32 @_Z3sumPA300_iii(ptr noundef %0, i32 noundef %1, i32 noundef %2) #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
  store i32 %2, 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
  br label %9

9:                                                ; preds = %38, %3
  %10 = load i32, ptr %5, align 4, !tbaa !9
  %11 = icmp sge i32 %10, 0
  br i1 %11, label %13, label %12

12:                                               ; preds = %9
  call void @llvm.lifetime.end.p0(i64 4, ptr %8) #2
  br label %46

13:                                               ; preds = %9
  %14 = load i32, ptr %6, align 4, !tbaa !9
  store i32 %14, ptr %8, align 4, !tbaa !9
  br label %15

15:                                               ; preds = %29, %13
  %16 = load i32, ptr %8, align 4, !tbaa !9
  %17 = icmp sge i32 %16, 0
  br i1 %17, label %18, label %37

18:                                               ; preds = %15
  %19 = load ptr, ptr %4, align 8, !tbaa !5
  %20 = load i32, ptr %5, align 4, !tbaa !9
  %21 = sext i32 %20 to i64
  %22 = getelementptr inbounds [300 x i32], ptr %19, i64 %21
  %23 = load i32, ptr %8, align 4, !tbaa !9
  %24 = sext i32 %23 to i64
  %25 = getelementptr inbounds [300 x i32], ptr %22, i64 0, i64 %24
  %26 = load i32, ptr %25, align 4, !tbaa !9
  %27 = load i32, ptr %7, align 4, !tbaa !9
  %28 = add nsw i32 %27, %26
  store i32 %28, ptr %7, align 4, !tbaa !9
  br label %29

29:                                               ; preds = %18
  %30 = load i32, ptr %8, align 4, !tbaa !9
  %31 = xor i32 %30, -1
  %32 = load i32, ptr %8, align 4, !tbaa !9
  %33 = add nsw i32 %32, 1
  %34 = and i32 %31, %33
  %35 = load i32, ptr %8, align 4, !tbaa !9
  %36 = sub nsw i32 %35, %34
  store i32 %36, ptr %8, align 4, !tbaa !9
  br label %15, !llvm.loop !11

37:                                               ; preds = %15
  br label %38

38:                                               ; preds = %37
  %39 = load i32, ptr %5, align 4, !tbaa !9
  %40 = xor i32 %39, -1
  %41 = load i32, ptr %5, align 4, !tbaa !9
  %42 = add nsw i32 %41, 1
  %43 = and i32 %40, %42
  %44 = load i32, ptr %5, align 4, !tbaa !9
  %45 = sub nsw i32 %44, %43
  store i32 %45, ptr %5, align 4, !tbaa !9
  br label %9, !llvm.loop !13

46:                                               ; preds = %12
  %47 = load i32, ptr %7, align 4, !tbaa !9
  call void @llvm.lifetime.end.p0(i64 4, ptr %7) #2
  ret i32 %47
}

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"}
!13 = distinct !{!13, !12}


; 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 i32 @_Z3sumPA300_iii(ptr nocapture noundef readonly %0, i32 noundef %1, i32 noundef %2) local_unnamed_addr #0 {
  %4 = or i32 %1, %2
  %or.cond = icmp sgt i32 %4, -1
  br i1 %or.cond, label %.preheader.us, label %._crit_edge19

.preheader.us:                                    ; preds = %3, %._crit_edge.us
  %.01318.us = phi i32 [ %10, %._crit_edge.us ], [ 0, %3 ]
  %.01417.us = phi i32 [ %19, %._crit_edge.us ], [ %1, %3 ]
  %5 = zext nneg i32 %.01417.us to i64
  br label %6

6:                                                ; preds = %.preheader.us, %6
  %.016.us = phi i32 [ %2, %.preheader.us ], [ %14, %6 ]
  %.115.us = phi i32 [ %.01318.us, %.preheader.us ], [ %10, %6 ]
  %7 = zext nneg i32 %.016.us to i64
  %8 = getelementptr inbounds [300 x i32], ptr %0, i64 %5, i64 %7
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = add nsw i32 %9, %.115.us
  %11 = xor i32 %.016.us, -1
  %12 = add nuw nsw i32 %.016.us, 1
  %13 = and i32 %12, %11
  %14 = sub nsw i32 %.016.us, %13
  %15 = icmp sgt i32 %14, -1
  br i1 %15, label %6, label %._crit_edge.us, !llvm.loop !9

._crit_edge.us:                                   ; preds = %6
  %16 = xor i32 %.01417.us, -1
  %17 = add nuw nsw i32 %.01417.us, 1
  %18 = and i32 %17, %16
  %19 = sub nsw i32 %.01417.us, %18
  %20 = icmp sgt i32 %19, -1
  br i1 %20, label %.preheader.us, label %._crit_edge19, !llvm.loop !11

._crit_edge19:                                    ; preds = %._crit_edge.us, %3
  %.013.lcssa = phi i32 [ 0, %3 ], [ %10, %._crit_edge.us ]
  ret i32 %.013.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"}
!9 = distinct !{!9, !10}
!10 = !{!"llvm.loop.mustprogress"}
!11 = distinct !{!11, !10}


; Effective O3 passes: GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopInstSimplifyPass,LoopRotatePass,LoopSimplifyCFGPass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,SimplifyCFGPass