; 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 }

@.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 @testStackIsEmpty(ptr noundef %0) #0 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  store ptr %0, ptr %2, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %3) #4
  %4 = call ptr @stackInitialization(ptr noundef @free)
  store ptr %4, ptr %3, align 8, !tbaa !5
  %5 = call signext i16 @stackIsEmpty(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 187, ptr noundef null, i32 noundef -83386157, i32 noundef %9)
  %10 = load ptr, ptr %2, align 8, !tbaa !5
  %11 = load ptr, ptr %3, align 8, !tbaa !5
  %12 = call signext i16 @stackIsEmpty(ptr noundef %11)
  %13 = sext i16 %12 to i32
  call void @CuAssertIntEquals_LineMsg(ptr noundef %10, ptr noundef @.str, i32 noundef 189, ptr noundef null, i32 noundef 1, i32 noundef %13)
  %14 = load ptr, ptr %3, align 8, !tbaa !5
  %15 = call ptr @generateIntPointerST(i32 noundef 10)
  call void @stackPush(ptr noundef %14, ptr noundef %15)
  %16 = load ptr, ptr %3, align 8, !tbaa !5
  %17 = call ptr @generateIntPointerST(i32 noundef 20)
  call void @stackPush(ptr noundef %16, ptr noundef %17)
  %18 = load ptr, ptr %3, align 8, !tbaa !5
  %19 = call ptr @generateIntPointerST(i32 noundef 30)
  call void @stackPush(ptr noundef %18, ptr noundef %19)
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = call ptr @generateIntPointerST(i32 noundef 40)
  call void @stackPush(ptr noundef %20, ptr noundef %21)
  %22 = load ptr, ptr %2, align 8, !tbaa !5
  %23 = load ptr, ptr %3, align 8, !tbaa !5
  %24 = call signext i16 @stackIsEmpty(ptr noundef %23)
  %25 = sext i16 %24 to i32
  call void @CuAssertIntEquals_LineMsg(ptr noundef %22, ptr noundef @.str, i32 noundef 196, ptr noundef null, i32 noundef 0, i32 noundef %25)
  br label %26

26:                                               ; preds = %31, %1
  %27 = load ptr, ptr %3, align 8, !tbaa !5
  %28 = call signext i16 @stackIsEmpty(ptr noundef %27)
  %29 = icmp ne i16 %28, 0
  %30 = xor i1 %29, true
  br i1 %30, label %31, label %34

31:                                               ; preds = %26
  %32 = load ptr, ptr %3, align 8, !tbaa !5
  %33 = call ptr @stackPop(ptr noundef %32)
  call void @free(ptr noundef %33) #4
  br label %26, !llvm.loop !12

34:                                               ; preds = %26
  %35 = load ptr, ptr %2, align 8, !tbaa !5
  %36 = load ptr, ptr %3, align 8, !tbaa !5
  %37 = call signext i16 @stackIsEmpty(ptr noundef %36)
  %38 = sext i16 %37 to i32
  call void @CuAssertIntEquals_LineMsg(ptr noundef %35, ptr noundef @.str, i32 noundef 201, ptr noundef null, i32 noundef 1, i32 noundef %38)
  %39 = load ptr, ptr %3, align 8, !tbaa !5
  call void @destroyStack(ptr noundef %39)
  call void @llvm.lifetime.end.p0(i64 8, ptr %3) #4
  ret void
}

declare signext i16 @stackIsEmpty(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 = 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"

@.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 @testStackIsEmpty(ptr noundef %0) local_unnamed_addr #0 {
  %2 = tail call ptr @stackInitialization(ptr noundef nonnull @free) #3
  %3 = tail call signext i16 @stackIsEmpty(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 187, ptr noundef null, i32 noundef -83386157, i32 noundef %5) #3
  %6 = tail call signext i16 @stackIsEmpty(ptr noundef %2) #3
  %7 = sext i16 %6 to i32
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 189, ptr noundef null, i32 noundef 1, i32 noundef %7) #3
  %8 = tail call ptr @generateIntPointerST(i32 noundef 10)
  tail call void @stackPush(ptr noundef %2, ptr noundef %8) #3
  %9 = tail call ptr @generateIntPointerST(i32 noundef 20)
  tail call void @stackPush(ptr noundef %2, ptr noundef %9) #3
  %10 = tail call ptr @generateIntPointerST(i32 noundef 30)
  tail call void @stackPush(ptr noundef %2, ptr noundef %10) #3
  %11 = tail call ptr @generateIntPointerST(i32 noundef 40)
  tail call void @stackPush(ptr noundef %2, ptr noundef %11) #3
  %12 = tail call signext i16 @stackIsEmpty(ptr noundef %2) #3
  %13 = sext i16 %12 to i32
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 196, ptr noundef null, i32 noundef 0, i32 noundef %13) #3
  %14 = tail call signext i16 @stackIsEmpty(ptr noundef %2) #3
  %.not14 = icmp eq i16 %14, 0
  br i1 %.not14, label %.lr.ph, label %._crit_edge

.lr.ph:                                           ; preds = %1, %.lr.ph
  %15 = tail call ptr @stackPop(ptr noundef %2) #3
  tail call void @free(ptr noundef %15) #3
  %16 = tail call signext i16 @stackIsEmpty(ptr noundef %2) #3
  %.not = icmp eq i16 %16, 0
  br i1 %.not, label %.lr.ph, label %._crit_edge, !llvm.loop !12

._crit_edge:                                      ; preds = %.lr.ph, %1
  %17 = tail call signext i16 @stackIsEmpty(ptr noundef %2) #3
  %18 = sext i16 %17 to i32
  tail call void @CuAssertIntEquals_LineMsg(ptr noundef %0, ptr noundef nonnull @.str, i32 noundef 201, ptr noundef null, i32 noundef 1, i32 noundef %18) #3
  tail call void @destroyStack(ptr noundef %2) #3
  ret void
}

declare signext i16 @stackIsEmpty(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 = distinct !{!12, !13}
!13 = !{!"llvm.loop.mustprogress"}


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