; LLVM IR from ADJA/algos :: DataStructures/QueueWithMinimum.ll (Z7enqueuei)

; 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"

%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

@d = external dso_local global %"class.std::deque", align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z7enqueuei(i32 noundef %0) #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %"struct.std::pair", align 4
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr %3) #3
  store i32 1, ptr %3, align 4, !tbaa !5
  br label %5

5:                                                ; preds = %15, %1
  %6 = call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @d) #3
  br i1 %6, label %13, label %7

7:                                                ; preds = %5
  %8 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80) @d) #3
  %9 = getelementptr inbounds %"struct.std::pair", ptr %8, i32 0, i32 0
  %10 = load i32, ptr %9, align 4, !tbaa !9
  %11 = load i32, ptr %2, align 4, !tbaa !5
  %12 = icmp sgt i32 %10, %11
  br label %13

13:                                               ; preds = %7, %5
  %14 = phi i1 [ false, %5 ], [ %12, %7 ]
  br i1 %14, label %15, label %21

15:                                               ; preds = %13
  %16 = call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80) @d) #3
  %17 = getelementptr inbounds %"struct.std::pair", ptr %16, i32 0, i32 1
  %18 = load i32, ptr %17, align 4, !tbaa !11
  %19 = load i32, ptr %3, align 4, !tbaa !5
  %20 = add nsw i32 %19, %18
  store i32 %20, ptr %3, align 4, !tbaa !5
  call void @_ZNSt5dequeISt4pairIiiESaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80) @d) #3
  br label %5, !llvm.loop !12

21:                                               ; preds = %13
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %22 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  store i64 %22, ptr %4, align 4
  call void @_ZNSt5dequeISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(80) @d, ptr noundef nonnull align 4 dereferenceable(8) %4)
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr %3) #3
  ret void
}

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5dequeISt4pairIiiESaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80)) #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5dequeISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(8)) #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 0}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = !{!10, !6, i64 4}
!12 = distinct !{!12, !13}
!13 = !{!"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"

%"class.std::deque" = type { %"class.std::_Deque_base" }
%"class.std::_Deque_base" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl" = type { %"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" }
%"struct.std::_Deque_base<std::pair<int, int>, std::allocator<std::pair<int, int>>>::_Deque_impl_data" = type { ptr, i64, %"struct.std::_Deque_iterator", %"struct.std::_Deque_iterator" }
%"struct.std::_Deque_iterator" = type { ptr, ptr, ptr, ptr }
%"struct.std::pair" = type { i32, i32 }

@d = external dso_local global %"class.std::deque", align 8

; Function Attrs: mustprogress uwtable
define dso_local void @_Z7enqueuei(i32 noundef %0) local_unnamed_addr #0 {
  %2 = alloca i32, align 4
  %3 = alloca i32, align 4
  %4 = alloca %"struct.std::pair", align 8
  store i32 %0, ptr %2, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 4, ptr nonnull %3) #3
  %5 = tail call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @d) #3
  br i1 %5, label %.critedge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %10
  %6 = phi i32 [ %14, %10 ], [ 1, %1 ]
  %7 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80) @d) #3
  %8 = load i32, ptr %7, align 4, !tbaa !9
  %9 = icmp sgt i32 %8, %0
  br i1 %9, label %10, label %.critedge

10:                                               ; preds = %.lr.ph
  %11 = tail call noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80) @d) #3
  %12 = getelementptr inbounds i8, ptr %11, i64 4
  %13 = load i32, ptr %12, align 4, !tbaa !11
  %14 = add nsw i32 %6, %13
  tail call void @_ZNSt5dequeISt4pairIiiESaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80) @d) #3
  %15 = tail call noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80) @d) #3
  br i1 %15, label %.critedge, label %.lr.ph, !llvm.loop !12

.critedge:                                        ; preds = %.lr.ph, %10, %1
  %.lcssa = phi i32 [ 1, %1 ], [ %14, %10 ], [ %6, %.lr.ph ]
  store i32 %.lcssa, ptr %3, align 4, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr nonnull %4) #3
  %16 = call i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4) %2, ptr noundef nonnull align 4 dereferenceable(4) %3)
  store i64 %16, ptr %4, align 8
  call void @_ZNSt5dequeISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(80) @d, ptr noundef nonnull align 4 dereferenceable(8) %4)
  call void @llvm.lifetime.end.p0(i64 8, ptr nonnull %4) #3
  call void @llvm.lifetime.end.p0(i64 4, ptr nonnull %3) #3
  ret void
}

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #1

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef zeroext i1 @_ZNKSt5dequeISt4pairIiiESaIS1_EE5emptyEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local noundef nonnull align 4 dereferenceable(8) ptr @_ZNSt5dequeISt4pairIiiESaIS1_EE4backEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress nounwind uwtable
declare dso_local void @_ZNSt5dequeISt4pairIiiESaIS1_EE8pop_backEv(ptr noundef nonnull align 8 dereferenceable(80)) local_unnamed_addr #2 align 2

; Function Attrs: mustprogress uwtable
declare dso_local void @_ZNSt5dequeISt4pairIiiESaIS1_EE9push_backEOS1_(ptr noundef nonnull align 8 dereferenceable(80), ptr noundef nonnull align 4 dereferenceable(8)) local_unnamed_addr #0 align 2

; Function Attrs: mustprogress uwtable
declare dso_local i64 @_ZSt9make_pairIRiS0_ESt4pairINSt25__strip_reference_wrapperINSt5decayIT_E4typeEE6__typeENS2_INS3_IT0_E4typeEE6__typeEEOS4_OS9_(ptr noundef nonnull align 4 dereferenceable(4), ptr noundef nonnull align 4 dereferenceable(4)) local_unnamed_addr #0

; Function Attrs: mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #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 = { mustprogress nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #3 = { 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 0}
!10 = !{!"_ZTSSt4pairIiiE", !6, i64 0, !6, i64 4}
!11 = !{!10, !6, i64 4}
!12 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: DSEPass,EarlyCSEPass,GVNPass,GlobalOptPass,InferAlignmentPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SimplifyCFGPass,TailCallElimPass