; LLVM IR from lzyrapx/Competitive-Programming :: 51Nod/1174（线段树）.ll (Z6PushUPi)

; 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"

@MAX = external dso_local global [888888 x i32], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z3maxii(i32 noundef, i32 noundef) #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6PushUPi(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  %3 = load i32, ptr %2, align 4, !tbaa !5
  %4 = shl i32 %3, 1
  %5 = sext i32 %4 to i64
  %6 = getelementptr inbounds [888888 x i32], ptr @MAX, i64 0, i64 %5
  %7 = load i32, ptr %6, align 4, !tbaa !5
  %8 = load i32, ptr %2, align 4, !tbaa !5
  %9 = shl i32 %8, 1
  %10 = or i32 %9, 1
  %11 = sext i32 %10 to i64
  %12 = getelementptr inbounds [888888 x i32], ptr @MAX, i64 0, i64 %11
  %13 = load i32, ptr %12, align 4, !tbaa !5
  %14 = call noundef i32 @_Z3maxii(i32 noundef %7, i32 noundef %13)
  %15 = load i32, ptr %2, align 4, !tbaa !5
  %16 = sext i32 %15 to i64
  %17 = getelementptr inbounds [888888 x i32], ptr @MAX, i64 0, i64 %16
  store i32 %14, ptr %17, align 4, !tbaa !5
  ret void
}

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"}


; 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"

@MAX = external dso_local local_unnamed_addr global [888888 x i32], align 16

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef i32 @_Z3maxii(i32 noundef, i32 noundef) local_unnamed_addr #0

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z6PushUPi(i32 noundef %0) local_unnamed_addr #0 {
  %2 = shl i32 %0, 1
  %3 = sext i32 %2 to i64
  %4 = getelementptr inbounds [888888 x i32], ptr @MAX, i64 0, i64 %3
  %5 = load i32, ptr %4, align 8, !tbaa !5
  %6 = or disjoint i32 %2, 1
  %7 = sext i32 %6 to i64
  %8 = getelementptr inbounds [888888 x i32], ptr @MAX, i64 0, i64 %7
  %9 = load i32, ptr %8, align 4, !tbaa !5
  %10 = tail call noundef i32 @_Z3maxii(i32 noundef %5, i32 noundef %9)
  %11 = sext i32 %0 to i64
  %12 = getelementptr inbounds [888888 x i32], ptr @MAX, i64 0, i64 %11
  store i32 %10, ptr %12, align 4, !tbaa !5
  ret void
}

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,InferAlignmentPass,InstCombinePass,SROAPass,TailCallElimPass