; LLVM IR from MostafaTwfiq/C-DataStructures-And-Algorithms :: Unit Test/Tests/DataStructuresTests/StacksTest/StackTest (StackTest)

; 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.Stack = type { ptr, i32, i32, ptr }

@.str = external hidden unnamed_addr constant [147 x i8], align 1
@ERROR_TEST = external dso_local global ptr, align 8

; Function Attrs: nounwind uwtable
declare dso_local ptr @generateIntPointerST(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 @stackInitialization(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 @destroyStack(ptr noundef) #2

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

declare ptr @stackPop(ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local void @testStackPeek(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca i32, align 4
  %5 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %6 = call ptr @stackInitialization(ptr noundef @free)
  store ptr %6, ptr %3, align 8, !tbaa !5
  %7 = call ptr @stackPeek(ptr noundef null)
  %8 = load ptr, ptr %2, align 8, !tbaa !5
  %9 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.ErrorTestStruct, ptr %9, i32 0, i32 0
  %11 = load i32, ptr %10, align 4, !tbaa !9
  call void @CuAssertIntEquals_LineMsg(ptr noundef %8, ptr noundef @.str, i32 noundef 157, ptr noundef null, i32 noundef -83386157, i32 noundef %11)
  %12 = load ptr, ptr %3, align 8, !tbaa !5
  %13 = call ptr @stackPeek(ptr noundef %12)
  %14 = load ptr, ptr %2, align 8, !tbaa !5
  %15 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.ErrorTestStruct, ptr %15, i32 0, i32 0
  %17 = load i32, ptr %16, align 4, !tbaa !9
  call void @CuAssertIntEquals_LineMsg(ptr noundef %14, ptr noundef @.str, i32 noundef 160, ptr noundef null, i32 noundef -833816740, i32 noundef %17)
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = call ptr @generateIntPointerST(i32 noundef 10)
  call void @stackPush(ptr noundef %18, ptr noundef %19)
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = call ptr @generateIntPointerST(i32 noundef 20)
  call void @stackPush(ptr noundef %20, ptr noundef %21)
  %22 = load ptr, ptr %3, align 8, !tbaa !5
  %23 = call ptr @generateIntPointerST(i32 noundef 30)
  call void @stackPush(ptr noundef %22, ptr noundef %23)
  %24 = load ptr, ptr %3, align 8, !tbaa !5
  %25 = call ptr @generateIntPointerST(i32 noundef 40)
  call void @stackPush(ptr noundef %24, ptr noundef %25)
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  store i32 50, ptr %4, align 4, !tbaa !12
  br label %26

26:                                               ; preds = %31, %1
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.Stack, ptr %27, i32 0, i32 2
  %29 = load i32, ptr %28, align 4, !tbaa !13
  %30 = icmp ne i32 %29, -1
  br i1 %30, label %31, label %46

31:                                               ; preds = %26
  %32 = load i32, ptr %4, align 4, !tbaa !12
  %33 = sub nsw i32 %32, 10
  store i32 %33, ptr %4, align 4, !tbaa !12
  call void @llvm.lifetime.start.p0(i64 8, ptr %5) #4
  %34 = load ptr, ptr %3, align 8, !tbaa !5
  %35 = call ptr @stackPeek(ptr noundef %34)
  store ptr %35, ptr %5, align 8, !tbaa !5
  %36 = load ptr, ptr %2, align 8, !tbaa !5
  %37 = load i32, ptr %4, align 4, !tbaa !12
  %38 = load ptr, ptr %5, align 8, !tbaa !5
  %39 = load i32, ptr %38, align 4, !tbaa !12
  call void @CuAssertIntEquals_LineMsg(ptr noundef %36, ptr noundef @.str, i32 noundef 172, ptr noundef null, i32 noundef %37, i32 noundef %39)
  %40 = load ptr, ptr %2, align 8, !tbaa !5
  %41 = load i32, ptr %4, align 4, !tbaa !12
  %42 = load ptr, ptr %3, align 8, !tbaa !5
  %43 = call ptr @stackPop(ptr noundef %42)
  %44 = load i32, ptr %43, align 4, !tbaa !12
  call void @CuAssertIntEquals_LineMsg(ptr noundef %40, ptr noundef @.str, i32 noundef 173, ptr noundef null, i32 noundef %41, i32 noundef %44)
  %45 = load ptr, ptr %5, align 8, !tbaa !5
  call void @free(ptr noundef %45) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %5) #4
  br label %26, !llvm.loop !15

46:                                               ; preds = %26
  %47 = load ptr, ptr %3, align 8, !tbaa !5
  call void @destroyStack(ptr noundef %47)
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret void
}

declare ptr @stackPeek(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 = !{!11, !11, i64 0}
!13 = !{!14, !11, i64 12}
!14 = !{!"Stack", !6, i64 0, !11, i64 8, !11, i64 12, !6, i64 16}
!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 [147 x i8], align 1
@ERROR_TEST = external dso_local local_unnamed_addr global ptr, align 8

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

declare ptr @stackInitialization(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 @destroyStack(ptr noundef) local_unnamed_addr #1

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

declare ptr @stackPop(ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local void @testStackPeek(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call ptr @stackInitialization(ptr noundef nonnull @free) #3
  %3 = tail call ptr @stackPeek(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 157, ptr noundef null, i32 noundef -83386157, i32 noundef %5) #3
  %6 = tail call ptr @stackPeek(ptr noundef %2) #3
  %7 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %8 = load i32, ptr %7, align 4, !tbaa !9
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 160, ptr noundef null, i32 noundef -833816740, i32 noundef %8) #3
  %9 = tail call ptr @generateIntPointerST(i32 noundef 10)
  tail call void @stackPush(ptr noundef %2, ptr noundef %9) #3
  %10 = tail call ptr @generateIntPointerST(i32 noundef 20)
  tail call void @stackPush(ptr noundef %2, ptr noundef %10) #3
  %11 = tail call ptr @generateIntPointerST(i32 noundef 30)
  tail call void @stackPush(ptr noundef %2, ptr noundef %11) #3
  %12 = tail call ptr @generateIntPointerST(i32 noundef 40)
  tail call void @stackPush(ptr noundef %2, ptr noundef %12) #3
  %13 = getelementptr inbounds i8, ptr %2, i64 12
  %14 = load i32, ptr %13, align 4, !tbaa !12
  %.not17 = icmp eq i32 %14, -1
  br i1 %.not17, label %._crit_edge, label %.lr.ph

.lr.ph:                                           ; preds = %1, %.lr.ph
  %.018 = phi i32 [ %15, %.lr.ph ], [ 50, %1 ]
  %15 = add nsw i32 %.018, -10
  %16 = tail call ptr @stackPeek(ptr noundef nonnull %2) #3
  %17 = load i32, ptr %16, align 4, !tbaa !14
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 172, ptr noundef null, i32 noundef %15, i32 noundef %17) #3
  %18 = tail call ptr @stackPop(ptr noundef nonnull %2) #3
  %19 = load i32, ptr %18, align 4, !tbaa !14
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 173, ptr noundef null, i32 noundef %15, i32 noundef %19) #3
  tail call void @free(ptr noundef %16) #3
  %20 = load i32, ptr %13, align 4, !tbaa !12
  %.not = icmp eq i32 %20, -1
  br i1 %.not, label %._crit_edge, label %.lr.ph, !llvm.loop !15

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

declare ptr @stackPeek(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, !11, i64 12}
!13 = !{!"Stack", !6, i64 0, !11, i64 8, !11, i64 12, !6, i64 16}
!14 = !{!11, !11, i64 0}
!15 = distinct !{!15, !16}
!16 = !{!"llvm.loop.mustprogress"}


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