; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: Unit Test/Tests/DataStructuresTests/DequesTest/DoublyLinkedListDequeTest (testDLLDequePeekRear)

; 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.ErrorTestStruct = type { i32 }
%struct.DLDeque = type { ptr }

@.str = external hidden unnamed_addr constant [179 x i8], align 1
@ERROR_TEST = external dso_local global ptr, align 8

; Function Attrs: nounwind uwtable
declare dso_local ptr @generateIntPointerDLLDT(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

declare ptr @dlDequeInitialization(ptr noundef) #2

declare void @CuAssertIntEquals_LineMsg(ptr noundef, ptr noundef, i32 noundef, ptr noundef, i32 noundef, i32 noundef) #2

; Function Attrs: nounwind
declare void @free(ptr noundef) #3

declare void @destroyDLDeque(ptr noundef) #2

declare void @dLDequeInsertFront(ptr noundef, ptr noundef) #2

declare i32 @doublyLinkedListGetLength(ptr noundef) #2

declare void @dLDequeInsertRear(ptr noundef, ptr noundef) #2

declare ptr @dLDequeGetRear(ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @testDLLDequePeekRear(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %5 = call ptr @dlDequeInitialization(ptr noundef @free)
  store ptr %5, ptr %3, align 8, !tbaa !5
  %6 = call ptr @dLDequePeekRear(ptr noundef null)
  %7 = load ptr, ptr %2, align 8, !tbaa !5
  %8 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %9 = getelementptr inbounds %struct.ErrorTestStruct, ptr %8, i32 0, i32 0
  %10 = load i32, ptr %9, align 4, !tbaa !9
  call void @CuAssertIntEquals_LineMsg(ptr noundef %7, ptr noundef @.str, i32 noundef 207, ptr noundef null, i32 noundef -83386157, i32 noundef %10)
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = call ptr @generateIntPointerDLLDT(i32 noundef 2)
  call void @dLDequeInsertFront(ptr noundef %11, ptr noundef %12)
  %13 = load ptr, ptr %3, align 8, !tbaa !5
  %14 = call ptr @generateIntPointerDLLDT(i32 noundef 1)
  call void @dLDequeInsertFront(ptr noundef %13, ptr noundef %14)
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = call ptr @generateIntPointerDLLDT(i32 noundef 3)
  call void @dLDequeInsertRear(ptr noundef %15, ptr noundef %16)
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = call ptr @generateIntPointerDLLDT(i32 noundef 4)
  call void @dLDequeInsertRear(ptr noundef %17, ptr noundef %18)
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = getelementptr inbounds %struct.DLDeque, ptr %19, i32 0, i32 0
  %21 = load ptr, ptr %20, align 8, !tbaa !12
  %22 = call i32 @doublyLinkedListGetLength(ptr noundef %21)
  %23 = sub nsw i32 %22, 1
  store i32 %23, ptr %4, align 4, !tbaa !14
  br label %24

24:                                               ; preds = %37, %1
  %25 = load i32, ptr %4, align 4, !tbaa !14
  %26 = icmp sge i32 %25, 0
  br i1 %26, label %28, label %27

27:                                               ; preds = %24
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  br label %40

28:                                               ; preds = %24
  %29 = load ptr, ptr %2, align 8, !tbaa !5
  %30 = load i32, ptr %4, align 4, !tbaa !14
  %31 = add nsw i32 %30, 1
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = call ptr @dLDequePeekRear(ptr noundef %32)
  %34 = load i32, ptr %33, align 4, !tbaa !14
  call void @CuAssertIntEquals_LineMsg(ptr noundef %29, ptr noundef @.str, i32 noundef 215, ptr noundef null, i32 noundef %31, i32 noundef %34)
  %35 = load ptr, ptr %3, align 8, !tbaa !5
  %36 = call ptr @dLDequeGetRear(ptr noundef %35)
  call void @free(ptr noundef %36) #4
  br label %37

37:                                               ; preds = %28
  %38 = load i32, ptr %4, align 4, !tbaa !14
  %39 = add nsw i32 %38, -1
  store i32 %39, ptr %4, align 4, !tbaa !14
  br label %24, !llvm.loop !15

40:                                               ; preds = %27
  %41 = load ptr, ptr %3, align 8, !tbaa !5
  call void @destroyDLDeque(ptr noundef %41)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret void
}

declare ptr @dLDequePeekRear(ptr noundef) #2

attributes #0 = { 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 = { "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 "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 #4 = { 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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"ErrorTestStruct", !11, i64 0}
!11 = !{!"int", !7, i64 0}
!12 = !{!13, !6, i64 0}
!13 = !{!"DLDeque", !6, i64 0}
!14 = !{!11, !11, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"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"

@.str = external hidden unnamed_addr constant [179 x i8], align 1
@ERROR_TEST = external dso_local local_unnamed_addr global ptr, align 8

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

declare ptr @dlDequeInitialization(ptr noundef) local_unnamed_addr #1

declare void @CuAssertIntEquals_LineMsg(ptr noundef, ptr noundef, i32 noundef, ptr noundef, i32 noundef, i32 noundef) local_unnamed_addr #1

; Function Attrs: mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite)
declare void @free(ptr allocptr nocapture noundef) #2

declare void @destroyDLDeque(ptr noundef) local_unnamed_addr #1

declare void @dLDequeInsertFront(ptr noundef, ptr noundef) local_unnamed_addr #1

declare i32 @doublyLinkedListGetLength(ptr noundef) local_unnamed_addr #1

declare void @dLDequeInsertRear(ptr noundef, ptr noundef) local_unnamed_addr #1

declare ptr @dLDequeGetRear(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @testDLLDequePeekRear(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call ptr @dlDequeInitialization(ptr noundef nonnull @free) #3
  %3 = tail call ptr @dLDequePeekRear(ptr noundef null) #3
  %4 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %5 = load i32, ptr %4, align 4, !tbaa !9
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 207, ptr noundef null, i32 noundef -83386157, i32 noundef %5) #3
  %6 = tail call ptr @generateIntPointerDLLDT(i32 noundef 2)
  tail call void @dLDequeInsertFront(ptr noundef %2, ptr noundef %6) #3
  %7 = tail call ptr @generateIntPointerDLLDT(i32 noundef 1)
  tail call void @dLDequeInsertFront(ptr noundef %2, ptr noundef %7) #3
  %8 = tail call ptr @generateIntPointerDLLDT(i32 noundef 3)
  tail call void @dLDequeInsertRear(ptr noundef %2, ptr noundef %8) #3
  %9 = tail call ptr @generateIntPointerDLLDT(i32 noundef 4)
  tail call void @dLDequeInsertRear(ptr noundef %2, ptr noundef %9) #3
  %10 = load ptr, ptr %2, align 8, !tbaa !12
  %11 = tail call i32 @doublyLinkedListGetLength(ptr noundef %10) #3
  %12 = icmp sgt i32 %11, 0
  br i1 %12, label %.lr.ph, label %._crit_edge

._crit_edge:                                      ; preds = %.lr.ph, %1
  tail call void @destroyDLDeque(ptr noundef nonnull %2) #3
  ret void

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.0.in12 = phi i32 [ %.0, %.lr.ph ], [ %11, %1 ]
  %.0 = add nsw i32 %.0.in12, -1
  %13 = tail call ptr @dLDequePeekRear(ptr noundef nonnull %2) #3
  %14 = load i32, ptr %13, align 4, !tbaa !14
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 215, ptr noundef null, i32 noundef %.0.in12, i32 noundef %14) #3
  %15 = tail call ptr @dLDequeGetRear(ptr noundef nonnull %2) #3
  tail call void @free(ptr noundef %15) #3
  %16 = icmp ugt i32 %.0.in12, 1
  br i1 %16, label %.lr.ph, label %._crit_edge, !llvm.loop !15
}

declare ptr @dLDequePeekRear(ptr noundef) local_unnamed_addr #1

attributes #0 = { 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 = { "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 #2 = { mustprogress nounwind willreturn allockind("free") memory(argmem: readwrite, inaccessiblemem: readwrite) "alloc-family"="malloc" "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 = !{!"any pointer", !7, i64 0}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!10, !11, i64 0}
!10 = !{!"ErrorTestStruct", !11, i64 0}
!11 = !{!"int", !7, i64 0}
!12 = !{!13, !6, i64 0}
!13 = !{!"DLDeque", !6, i64 0}
!14 = !{!11, !11, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,JumpThreadingPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,SROAPass,SimplifyCFGPass,TailCallElimPass