; LLVM IR from ahampriyanshu/algo-ds-101 :: Algorithms/Graph/Dijkstra/dijkstra_leftist_heap/leftistHeap.ll (ZN4NodeC2ESt4pairIfiE)

; 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.std::pair" = type { float, i32 }
%class.Node = type { %"struct.std::pair", i32, ptr, ptr, ptr }

; Function Attrs: mustprogress uwtable
define dso_local void @_ZN4NodeC2ESt4pairIfiE(ptr noundef nonnull align 8 dereferenceable(40) %0, i64 %1) unnamed_addr #0 align 2 {
  %3 = alloca %"struct.std::pair", align 4
  %4 = alloca ptr, align 8
  store i64 %1, ptr %3, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  %5 = load ptr, ptr %4, align 8
  %6 = getelementptr inbounds %class.Node, ptr %5, i32 0, i32 0
  call void @_ZNSt4pairIfiEC2IfiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8) %6)
  %7 = getelementptr inbounds %class.Node, ptr %5, i32 0, i32 0
  %8 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIfiEaSERKS0_(ptr noundef nonnull align 4 dereferenceable(8) %7, ptr noundef nonnull align 4 dereferenceable(8) %3)
  %9 = getelementptr inbounds %class.Node, ptr %5, i32 0, i32 1
  store i32 0, ptr %9, align 8, !tbaa !9
  %10 = getelementptr inbounds %class.Node, ptr %5, i32 0, i32 2
  store ptr null, ptr %10, align 8, !tbaa !14
  %11 = getelementptr inbounds %class.Node, ptr %5, i32 0, i32 3
  store ptr null, ptr %11, align 8, !tbaa !15
  %12 = getelementptr inbounds %class.Node, ptr %5, i32 0, i32 4
  store ptr null, ptr %12, align 8, !tbaa !16
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIfiEC2IfiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #1 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIfiEaSERKS0_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(8)) #1 align 2

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 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C++ TBAA"}
!9 = !{!10, !13, i64 8}
!10 = !{!"_ZTS4Node", !11, i64 0, !13, i64 8, !6, i64 16, !6, i64 24, !6, i64 32}
!11 = !{!"_ZTSSt4pairIfiE", !12, i64 0, !13, i64 4}
!12 = !{!"float", !7, i64 0}
!13 = !{!"int", !7, i64 0}
!14 = !{!10, !6, i64 16}
!15 = !{!10, !6, i64 24}
!16 = !{!10, !6, i64 32}


; 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.std::pair" = type { float, i32 }

; Function Attrs: mustprogress nounwind uwtable
define dso_local void @_ZN4NodeC2ESt4pairIfiE(ptr noundef nonnull align 8 dereferenceable(40) %0, i64 %1) unnamed_addr #0 align 2 {
  %3 = alloca %"struct.std::pair", align 8
  store i64 %1, ptr %3, align 8
  tail call void @_ZNSt4pairIfiEC2IfiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8) %0)
  %4 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIfiEaSERKS0_(ptr noundef nonnull align 4 dereferenceable(8) %0, ptr noundef nonnull align 4 dereferenceable(8) %3)
  %5 = getelementptr inbounds i8, ptr %0, i64 8
  store i32 0, ptr %5, align 8, !tbaa !5
  %6 = getelementptr inbounds i8, ptr %0, i64 16
  call void @llvm.memset.p0.i64(ptr noundef nonnull align 8 dereferenceable(24) %6, i8 0, i64 24, i1 false)
  ret void
}

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt4pairIfiEC2IfiTnNSt9enable_ifIXsr6__and_ISt37__is_implicitly_default_constructibleIT_ES3_IT0_EEE5valueEbE4typeELb1EEEv(ptr noundef nonnull align 4 dereferenceable(8)) unnamed_addr #0 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt4pairIfiEaSERKS0_(ptr noundef nonnull align 4 dereferenceable(8), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: nocallback nofree nounwind willreturn memory(argmem: write)
declare void @llvm.memset.p0.i64(ptr nocapture writeonly, i8, i64, i1 immarg) #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 = { nocallback nofree nounwind willreturn memory(argmem: write) }

!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, !11, i64 8}
!6 = !{!"_ZTS4Node", !7, i64 0, !11, i64 8, !12, i64 16, !12, i64 24, !12, i64 32}
!7 = !{!"_ZTSSt4pairIfiE", !8, i64 0, !11, i64 4}
!8 = !{!"float", !9, i64 0}
!9 = !{!"omnipotent char", !10, i64 0}
!10 = !{!"Simple C++ TBAA"}
!11 = !{!"int", !9, i64 0}
!12 = !{!"any pointer", !9, i64 0}


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