; 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

; Function Attrs: nounwind uwtable
define dso_local void @testStackPush(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 @stackInitialization(ptr noundef @free)
  store ptr %5, ptr %3, align 8, !tbaa !5
  call void @stackPush(ptr noundef null, ptr noundef null)
  %6 = load ptr, ptr %2, align 8, !tbaa !5
  %7 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.ErrorTestStruct, ptr %7, i32 0, i32 0
  %9 = load i32, ptr %8, align 4, !tbaa !9
  call void @CuAssertIntEquals_LineMsg(ptr noundef %6, ptr noundef @.str, i32 noundef 78, ptr noundef null, i32 noundef -83386157, i32 noundef %9)
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  call void @stackPush(ptr noundef %10, ptr noundef null)
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %12 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %13 = getelementptr inbounds %struct.ErrorTestStruct, ptr %12, i32 0, i32 0
  %14 = load i32, ptr %13, align 4, !tbaa !9
  call void @CuAssertIntEquals_LineMsg(ptr noundef %11, ptr noundef @.str, i32 noundef 81, ptr noundef null, i32 noundef -83384987, i32 noundef %14)
  %15 = load ptr, ptr %3, align 8, !tbaa !5
  %16 = call ptr @generateIntPointerST(i32 noundef 10)
  call void @stackPush(ptr noundef %15, ptr noundef %16)
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = call ptr @generateIntPointerST(i32 noundef 20)
  call void @stackPush(ptr noundef %17, ptr noundef %18)
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = call ptr @generateIntPointerST(i32 noundef 30)
  call void @stackPush(ptr noundef %19, ptr noundef %20)
  %21 = load ptr, ptr %3, align 8, !tbaa !5
  %22 = call ptr @generateIntPointerST(i32 noundef 40)
  call void @stackPush(ptr noundef %21, ptr noundef %22)
  call void @llvm.lifetime.start.p0(i64 4, ptr %4) #4
  store i32 0, ptr %4, align 4, !tbaa !12
  br label %23

23:                                               ; preds = %44, %1
  %24 = load i32, ptr %4, align 4, !tbaa !12
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.Stack, ptr %25, i32 0, i32 2
  %27 = load i32, ptr %26, align 4, !tbaa !13
  %28 = add nsw i32 %27, 1
  %29 = icmp slt i32 %24, %28
  br i1 %29, label %31, label %30

30:                                               ; preds = %23
  call void @llvm.lifetime.end.p0(i64 4, ptr %4) #4
  br label %47

31:                                               ; preds = %23
  %32 = load ptr, ptr %2, align 8, !tbaa !5
  %33 = load i32, ptr %4, align 4, !tbaa !12
  %34 = add nsw i32 %33, 1
  %35 = mul nsw i32 %34, 10
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = getelementptr inbounds %struct.Stack, ptr %36, i32 0, i32 0
  %38 = load ptr, ptr %37, align 8, !tbaa !15
  %39 = load i32, ptr %4, align 4, !tbaa !12
  %40 = sext i32 %39 to i64
  %41 = getelementptr inbounds ptr, ptr %38, i64 %40
  %42 = load ptr, ptr %41, align 8, !tbaa !5
  %43 = load i32, ptr %42, align 4, !tbaa !12
  call void @CuAssertIntEquals_LineMsg(ptr noundef %32, ptr noundef @.str, i32 noundef 90, ptr noundef null, i32 noundef %35, i32 noundef %43)
  br label %44

44:                                               ; preds = %31
  %45 = load i32, ptr %4, align 4, !tbaa !12
  %46 = add nsw i32 %45, 1
  store i32 %46, ptr %4, align 4, !tbaa !12
  br label %23, !llvm.loop !16

47:                                               ; preds = %30
  %48 = load ptr, ptr %3, align 8, !tbaa !5
  call void @destroyStack(ptr noundef %48)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret void
}

declare void @stackPush(ptr noundef, 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 = !{!14, !6, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"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

; Function Attrs: nounwind uwtable
define dso_local void @testStackPush(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call ptr @stackInitialization(ptr noundef nonnull @free) #3
  tail call void @stackPush(ptr noundef null, ptr noundef null) #3
  %3 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %4 = load i32, ptr %3, align 4, !tbaa !9
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 78, ptr noundef null, i32 noundef -83386157, i32 noundef %4) #3
  tail call void @stackPush(ptr noundef %2, ptr noundef null) #3
  %5 = load ptr, ptr @ERROR_TEST, align 8, !tbaa !5
  %6 = load i32, ptr %5, align 4, !tbaa !9
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 81, ptr noundef null, i32 noundef -83384987, i32 noundef %6) #3
  %7 = tail call ptr @generateIntPointerST(i32 noundef 10)
  tail call void @stackPush(ptr noundef %2, ptr noundef %7) #3
  %8 = tail call ptr @generateIntPointerST(i32 noundef 20)
  tail call void @stackPush(ptr noundef %2, ptr noundef %8) #3
  %9 = tail call ptr @generateIntPointerST(i32 noundef 30)
  tail call void @stackPush(ptr noundef %2, ptr noundef %9) #3
  %10 = tail call ptr @generateIntPointerST(i32 noundef 40)
  tail call void @stackPush(ptr noundef %2, ptr noundef %10) #3
  %11 = getelementptr inbounds i8, ptr %2, i64 12
  %12 = load i32, ptr %11, align 4, !tbaa !12
  %.not14 = icmp slt i32 %12, 0
  br i1 %.not14, label %._crit_edge, label %.lr.ph

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

.lr.ph:                                           ; preds = %1, %.lr.ph
  %indvars.iv = phi i64 [ %indvars.iv.next, %.lr.ph ], [ 0, %1 ]
  %indvars.iv.next = add nuw nsw i64 %indvars.iv, 1
  %13 = load ptr, ptr %2, align 8, !tbaa !14
  %14 = getelementptr inbounds ptr, ptr %13, i64 %indvars.iv
  %15 = load ptr, ptr %14, align 8, !tbaa !5
  %16 = load i32, ptr %15, align 4, !tbaa !15
  %17 = trunc i64 %indvars.iv.next to i32
  %18 = mul i32 %17, 10
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 90, ptr noundef null, i32 noundef %18, i32 noundef %16) #3
  %19 = load i32, ptr %11, align 4, !tbaa !12
  %20 = sext i32 %19 to i64
  %.not.not = icmp slt i64 %indvars.iv, %20
  br i1 %.not.not, label %.lr.ph, label %._crit_edge, !llvm.loop !16
}

declare void @stackPush(ptr noundef, 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 = !{!13, !6, i64 0}
!15 = !{!11, !11, i64 0}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}


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