; LLVM IR from VastoLorde95/Competitive-Programming :: CodeChef/SHORT/COOK65/Problem E/brute.ll (Z5mergei)

; 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.node = type { i32, i32, i32 }

@st = external dso_local global [400040 x %struct.node], align 16

; Function Attrs: mustprogress uwtable
define dso_local void @_Z5mergei(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 = mul nsw i32 2, %3
  %5 = sext i32 %4 to i64
  %6 = getelementptr inbounds [400040 x %struct.node], ptr @st, i64 0, i64 %5
  %7 = getelementptr inbounds %struct.node, ptr %6, i32 0, i32 1
  %8 = load i32, ptr %7, align 4, !tbaa !9
  %9 = load i32, ptr %2, align 4, !tbaa !5
  %10 = mul nsw i32 2, %9
  %11 = add nsw i32 %10, 1
  %12 = sext i32 %11 to i64
  %13 = getelementptr inbounds [400040 x %struct.node], ptr @st, i64 0, i64 %12
  %14 = getelementptr inbounds %struct.node, ptr %13, i32 0, i32 1
  %15 = load i32, ptr %14, align 4, !tbaa !9
  %16 = add nsw i32 %8, %15
  %17 = load i32, ptr %2, align 4, !tbaa !5
  %18 = sext i32 %17 to i64
  %19 = getelementptr inbounds [400040 x %struct.node], ptr @st, i64 0, i64 %18
  %20 = getelementptr inbounds %struct.node, ptr %19, i32 0, i32 1
  store i32 %16, ptr %20, align 4, !tbaa !9
  %21 = load i32, ptr %2, align 4, !tbaa !5
  %22 = mul nsw i32 2, %21
  %23 = sext i32 %22 to i64
  %24 = getelementptr inbounds [400040 x %struct.node], ptr @st, i64 0, i64 %23
  %25 = getelementptr inbounds %struct.node, ptr %24, i32 0, i32 0
  %26 = load i32, ptr %2, align 4, !tbaa !5
  %27 = mul nsw i32 2, %26
  %28 = add nsw i32 %27, 1
  %29 = sext i32 %28 to i64
  %30 = getelementptr inbounds [400040 x %struct.node], ptr @st, i64 0, i64 %29
  %31 = getelementptr inbounds %struct.node, ptr %30, i32 0, i32 0
  %32 = call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %25, ptr noundef nonnull align 4 dereferenceable(4) %31)
  %33 = load i32, ptr %32, align 4, !tbaa !5
  %34 = load i32, ptr %2, align 4, !tbaa !5
  %35 = sext i32 %34 to i64
  %36 = getelementptr inbounds [400040 x %struct.node], ptr @st, i64 0, i64 %35
  %37 = getelementptr inbounds %struct.node, ptr %36, i32 0, i32 2
  %38 = load i32, ptr %37, align 4, !tbaa !11
  %39 = add nsw i32 %33, %38
  %40 = load i32, ptr %2, align 4, !tbaa !5
  %41 = sext i32 %40 to i64
  %42 = getelementptr inbounds [400040 x %struct.node], ptr @st, i64 0, i64 %41
  %43 = getelementptr inbounds %struct.node, ptr %42, i32 0, i32 0
  store i32 %39, ptr %43, align 4, !tbaa !12
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #1

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" }
attributes #1 = { inlinehint 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"}
!9 = !{!10, !6, i64 4}
!10 = !{!"_ZTS4node", !6, i64 0, !6, i64 4, !6, i64 8}
!11 = !{!10, !6, i64 8}
!12 = !{!10, !6, i64 0}


; 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.node = type { i32, i32, i32 }

@st = external dso_local global [400040 x %struct.node], align 16

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_Z5mergei(i32 noundef %0) local_unnamed_addr #0 {
  %2 = shl nsw i32 %0, 1
  %3 = sext i32 %2 to i64
  %4 = getelementptr inbounds [400040 x %struct.node], ptr @st, i64 0, i64 %3
  %5 = getelementptr inbounds i8, ptr %4, i64 4
  %6 = load i32, ptr %5, align 4, !tbaa !5
  %7 = or disjoint i32 %2, 1
  %8 = sext i32 %7 to i64
  %9 = getelementptr inbounds [400040 x %struct.node], ptr @st, i64 0, i64 %8
  %10 = getelementptr inbounds i8, ptr %9, i64 4
  %11 = load i32, ptr %10, align 8, !tbaa !5
  %12 = add nsw i32 %11, %6
  %13 = sext i32 %0 to i64
  %14 = getelementptr inbounds [400040 x %struct.node], ptr @st, i64 0, i64 %13
  %15 = getelementptr inbounds i8, ptr %14, i64 4
  store i32 %12, ptr %15, align 4, !tbaa !5
  %16 = tail call noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4) %4, ptr noundef nonnull align 4 dereferenceable(4) %9)
  %17 = load i32, ptr %16, align 4, !tbaa !10
  %18 = getelementptr inbounds i8, ptr %14, i64 8
  %19 = load i32, ptr %18, align 4, !tbaa !11
  %20 = add nsw i32 %19, %17
  store i32 %20, ptr %14, align 4, !tbaa !12
  ret void
}

; Function Attrs: inlinehint mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(4) ptr @_ZSt3maxIiERKT_S2_S2_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #1

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 = { inlinehint 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, !7, i64 4}
!6 = !{!"_ZTS4node", !7, i64 0, !7, i64 4, !7, i64 8}
!7 = !{!"int", !8, i64 0}
!8 = !{!"omnipotent char", !9, i64 0}
!9 = !{!"Simple C++ TBAA"}
!10 = !{!7, !7, i64 0}
!11 = !{!6, !7, i64 8}
!12 = !{!6, !7, i64 0}


; Effective O3 passes: EarlyCSEPass,GlobalOptPass,InferAlignmentPass,InstCombinePass,PostOrderFunctionAttrsPass,ReassociatePass,SROAPass,TailCallElimPass