; LLVM IR from ippeb/ACM-ICPC :: dynamic_programming/RMQ/RMQ_sparse_table.ll (Z3RMQii)

; 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"

@A = external dso_local global [100001 x i32], align 16
@M = external dso_local global [100001 x [66 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z2l2i(i32 noundef) #0

; 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

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z3RMQii(i32 noundef %0, i32 noundef %1) #0 {
  %3 = alloca i32, align 4
  %4 = alloca i32, align 4
  %5 = alloca i32, align 4
  %6 = alloca i32, align 4
  %7 = alloca i32, align 4
  store i32 %0, ptr %4, align 4, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %6) #2
  %8 = load i32, ptr %5, align 4, !tbaa !5
  %9 = load i32, ptr %4, align 4, !tbaa !5
  %10 = sub nsw i32 %8, %9
  %11 = add nsw i32 %10, 1
  %12 = call noundef i32 @_Z2l2i(i32 noundef %11)
  store i32 %12, ptr %6, align 4, !tbaa !5
  %13 = load i32, ptr %4, align 4, !tbaa !5
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [100001 x [66 x i32]], ptr @M, i64 0, i64 %14
  %16 = load i32, ptr %6, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [66 x i32], ptr %15, i64 0, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = sext i32 %19 to i64
  %21 = getelementptr inbounds [100001 x i32], ptr @A, i64 0, i64 %20
  %22 = load i32, ptr %21, align 4, !tbaa !5
  %23 = load i32, ptr %5, align 4, !tbaa !5
  %24 = load i32, ptr %6, align 4, !tbaa !5
  %25 = shl i32 1, %24
  %26 = sub nsw i32 %23, %25
  %27 = add nsw i32 %26, 1
  %28 = sext i32 %27 to i64
  %29 = getelementptr inbounds [100001 x [66 x i32]], ptr @M, i64 0, i64 %28
  %30 = load i32, ptr %6, align 4, !tbaa !5
  %31 = sext i32 %30 to i64
  %32 = getelementptr inbounds [66 x i32], ptr %29, i64 0, i64 %31
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = sext i32 %33 to i64
  %35 = getelementptr inbounds [100001 x i32], ptr @A, i64 0, i64 %34
  %36 = load i32, ptr %35, align 4, !tbaa !5
  %37 = icmp sgt i32 %22, %36
  br i1 %37, label %38, label %46

38:                                               ; preds = %2
  %39 = load i32, ptr %4, align 4, !tbaa !5
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds [100001 x [66 x i32]], ptr @M, i64 0, i64 %40
  %42 = load i32, ptr %6, align 4, !tbaa !5
  %43 = sext i32 %42 to i64
  %44 = getelementptr inbounds [66 x i32], ptr %41, i64 0, i64 %43
  %45 = load i32, ptr %44, align 4, !tbaa !5
  store i32 %45, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %58

46:                                               ; preds = %2
  %47 = load i32, ptr %5, align 4, !tbaa !5
  %48 = load i32, ptr %6, align 4, !tbaa !5
  %49 = shl i32 1, %48
  %50 = sub nsw i32 %47, %49
  %51 = add nsw i32 %50, 1
  %52 = sext i32 %51 to i64
  %53 = getelementptr inbounds [100001 x [66 x i32]], ptr @M, i64 0, i64 %52
  %54 = load i32, ptr %6, align 4, !tbaa !5
  %55 = sext i32 %54 to i64
  %56 = getelementptr inbounds [66 x i32], ptr %53, i64 0, i64 %55
  %57 = load i32, ptr %56, align 4, !tbaa !5
  store i32 %57, ptr %3, align 4
  store i32 1, ptr %7, align 4
  br label %58

58:                                               ; preds = %46, %38
  call void @llvm.lifetime.end.p0(i64 4, ptr %6) #2
  %59 = load i32, ptr %3, align 4
  ret i32 %59
}

attributes #0 = { 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 #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 = !{!"int", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}


; 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"

@A = external dso_local local_unnamed_addr global [100001 x i32], align 16
@M = external dso_local local_unnamed_addr global [100001 x [66 x i32]], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z2l2i(i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local noundef i32 @_Z3RMQii(i32 noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %reass.sub = sub i32 %1, %0
  %3 = add i32 %reass.sub, 1
  %4 = tail call noundef i32 @_Z2l2i(i32 noundef %3)
  %5 = sext i32 %0 to i64
  %6 = sext i32 %4 to i64
  %7 = getelementptr inbounds [100001 x [66 x i32]], ptr @M, i64 0, i64 %5, i64 %6
  %8 = load i32, ptr %7, align 4, !tbaa !5
  %9 = sext i32 %8 to i64
  %10 = getelementptr inbounds [100001 x i32], ptr @A, i64 0, i64 %9
  %11 = load i32, ptr %10, align 4, !tbaa !5
  %.neg = shl nsw i32 -1, %4
  %12 = add i32 %1, 1
  %13 = add i32 %12, %.neg
  %14 = sext i32 %13 to i64
  %15 = getelementptr inbounds [100001 x [66 x i32]], ptr @M, i64 0, i64 %14, i64 %6
  %16 = load i32, ptr %15, align 4, !tbaa !5
  %17 = sext i32 %16 to i64
  %18 = getelementptr inbounds [100001 x i32], ptr @A, i64 0, i64 %17
  %19 = load i32, ptr %18, align 4, !tbaa !5
  %20 = icmp sgt i32 %11, %19
  %. = select i1 %20, i32 %8, i32 %16
  ret i32 %.
}

attributes #0 = { 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" }

!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: EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,ReassociatePass,SROAPass,SimplifyCFGPass,TailCallElimPass