; LLVM IR from pranjalwalia/Competitive-programming :: spoj/dquery.ll (Z3fixii)

; 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"

%struct.fo = type { i32, i32 }

@a = external dso_local global [1000000 x i32], align 16
@n = external dso_local global i32, align 4
@b = external dso_local global [1000000 x %struct.fo], align 16

; 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 void @_Z6updateiiix(i32 noundef, i32 noundef, i32 noundef, i64 noundef) #1

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3fixii(i32 noundef %0, i32 noundef %1) #1 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  store i32 %0, ptr %3, align 4, !tbaa !5
  store i32 %1, ptr %4, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %5) #2
  %7 = load i32, ptr %4, align 4, !tbaa !5
  store i32 %7, ptr %5, align 4, !tbaa !5
  br label %8

8:                                                ; preds = %28, %2
  %9 = load i32, ptr %5, align 4, !tbaa !5
  %10 = load i32, ptr %3, align 4, !tbaa !5
  %11 = icmp sgt i32 %9, %10
  br i1 %11, label %13, label %12

12:                                               ; preds = %8
  call void @llvm.lifetime.end.p0(i64 4, ptr %5) #2
  br label %31

13:                                               ; preds = %8
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %14 = load i32, ptr %5, align 4, !tbaa !5
  %15 = sext i32 %14 to i64
  %16 = getelementptr inbounds [1000000 x %struct.fo], ptr @b, i64 0, i64 %15
  %17 = getelementptr inbounds %struct.fo, ptr %16, i32 0, i32 1
  %18 = load i32, ptr %17, align 4, !tbaa !9
  store i32 %18, ptr %6, align 4, !tbaa !5
  %19 = load i32, ptr %6, align 4, !tbaa !5
  %20 = icmp sgt i32 %19, 0
  br i1 %20, label %21, label %27

21:                                               ; preds = %13
  %22 = load i32, ptr %6, align 4, !tbaa !5
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [1000000 x i32], ptr @a, i64 0, i64 %23
  store i32 1, ptr %24, align 4, !tbaa !5
  %25 = load i32, ptr %6, align 4, !tbaa !5
  %26 = load i32, ptr @n, align 4, !tbaa !5
  call void @_Z6updateiiix(i32 noundef %25, i32 noundef 1, i32 noundef %26, i64 noundef 1)
  br label %27

27:                                               ; preds = %21, %13
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  br label %28

28:                                               ; preds = %27
  %29 = load i32, ptr %5, align 4, !tbaa !5
  %30 = add nsw i32 %29, -1
  store i32 %30, ptr %5, align 4, !tbaa !5
  br label %8, !llvm.loop !11

31:                                               ; preds = %12
  ret void
}

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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !6, i64 4}
!10 = !{!"_ZTS2fo", !6, i64 0, !6, i64 4}
!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"

%struct.fo = type { i32, i32 }

@a = external dso_local local_unnamed_addr global [1000000 x i32], align 16
@n = external dso_local local_unnamed_addr global i32, align 4
@b = external dso_local local_unnamed_addr global [1000000 x %struct.fo], align 16

; Function Attrs: mustprogress uwtable
declare dso_local void @_Z6updateiiix(i32 noundef, i32 noundef, i32 noundef, i64 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress uwtable
define dso_local void @_Z3fixii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = icmp sgt i32 %1, %0
  br i1 %3, label %.lr.ph.preheader, label %._crit_edge

.lr.ph.preheader:                                 ; preds = %2
  %4 = sext i32 %1 to i64
  %5 = sext i32 %0 to i64
  br label %.lr.ph

._crit_edge:                                      ; preds = %13, %2
  ret void

.lr.ph:                                           ; preds = %.lr.ph.preheader, %13
  %indvars.iv = phi i64 [ %4, %.lr.ph.preheader ], [ %indvars.iv.next, %13 ]
  %6 = getelementptr inbounds [1000000 x %struct.fo], ptr @b, i64 0, i64 %indvars.iv, i32 1
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = icmp sgt i32 %7, 0
  br i1 %8, label %9, label %13

9:                                                ; preds = %.lr.ph
  %10 = zext nneg i32 %7 to i64
  %11 = getelementptr inbounds [1000000 x i32], ptr @a, i64 0, i64 %10
  store i32 1, ptr %11, align 4, !tbaa !10
  %12 = load i32, ptr @n, align 4, !tbaa !10
  tail call void @_Z6updateiiix(i32 noundef %7, i32 noundef 1, i32 noundef %12, i64 noundef 1)
  br label %13

13:                                               ; preds = %9, %.lr.ph
  %indvars.iv.next = add nsw i64 %indvars.iv, -1
  %14 = icmp sgt i64 %indvars.iv.next, %5
  br i1 %14, label %.lr.ph, label %._crit_edge, !llvm.loop !11
}

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 = !{!6, !7, i64 4}
!6 = !{!"_ZTS2fo", !7, i64 0, !7, i64 4}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!7, !7, i64 0}
!11 = distinct !{!11, !12}
!12 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: GlobalOptPass,IPSCCPPass,IndVarSimplifyPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass