; LLVM IR from LeoVen/C-Macro-Collections :: examples (callbacks)

; 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.buffer = type { [100 x i32], i64, i32, ptr, ptr, ptr }

@__func__.b_push_back = external hidden unnamed_addr constant [12 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @b_full(ptr noundef) #0

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @b_push_back(ptr noundef %0, i32 noundef %1) #0 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %6 = load ptr, ptr %4, align 8, !tbaa !5
  %7 = call zeroext i1 @b_full(ptr noundef %6)
  br i1 %7, label %8, label %11

8:                                                ; preds = %2
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.buffer, ptr %9, i32 0, i32 2
  store i32 10, ptr %10, align 8, !tbaa !11
  store i1 false, ptr %3, align 1
  br label %32

11:                                               ; preds = %2
  %12 = load i32, ptr %5, align 4, !tbaa !9
  %13 = load ptr, ptr %4, align 8, !tbaa !5
  %14 = getelementptr inbounds %struct.buffer, ptr %13, i32 0, i32 0
  %15 = load ptr, ptr %4, align 8, !tbaa !5
  %16 = getelementptr inbounds %struct.buffer, ptr %15, i32 0, i32 1
  %17 = load i64, ptr %16, align 8, !tbaa !14
  %18 = add i64 %17, 1
  store i64 %18, ptr %16, align 8, !tbaa !14
  %19 = getelementptr inbounds [100 x i32], ptr %14, i64 0, i64 %17
  store i32 %12, ptr %19, align 4, !tbaa !9
  %20 = load ptr, ptr %4, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.buffer, ptr %20, i32 0, i32 2
  store i32 0, ptr %21, align 8, !tbaa !11
  %22 = load ptr, ptr %4, align 8, !tbaa !5
  %23 = getelementptr inbounds %struct.buffer, ptr %22, i32 0, i32 5
  %24 = load ptr, ptr %23, align 8, !tbaa !15
  %25 = icmp ne ptr %24, null
  br i1 %25, label %26, label %31

26:                                               ; preds = %11
  %27 = load ptr, ptr %4, align 8, !tbaa !5
  %28 = getelementptr inbounds %struct.buffer, ptr %27, i32 0, i32 5
  %29 = load ptr, ptr %28, align 8, !tbaa !15
  %30 = load ptr, ptr %4, align 8, !tbaa !5
  call void %29(ptr noundef @__func__.b_push_back, ptr noundef %30)
  br label %31

31:                                               ; preds = %26, %11
  store i1 true, ptr %3, align 1
  br label %32

32:                                               ; preds = %31, %8
  %33 = load i1, ptr %3, align 1
  ret i1 %33
}

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" }

!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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !10, i64 408}
!12 = !{!"buffer", !7, i64 0, !13, i64 400, !10, i64 408, !6, i64 416, !6, i64 424, !6, i64 432}
!13 = !{!"long", !7, i64 0}
!14 = !{!12, !13, i64 400}
!15 = !{!12, !6, i64 432}


; 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"

@__func__.b_push_back = external hidden unnamed_addr constant [12 x i8], align 1

; Function Attrs: nounwind uwtable
declare dso_local zeroext i1 @b_full(ptr noundef) local_unnamed_addr #0

; Function Attrs: nounwind uwtable
define dso_local noundef zeroext i1 @b_push_back(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = tail call zeroext i1 @b_full(ptr noundef %0)
  br i1 %3, label %4, label %6

4:                                                ; preds = %2
  %5 = getelementptr inbounds i8, ptr %0, i64 408
  store i32 10, ptr %5, align 8, !tbaa !5
  br label %15

6:                                                ; preds = %2
  %7 = getelementptr inbounds i8, ptr %0, i64 400
  %8 = load i64, ptr %7, align 8, !tbaa !12
  %9 = add i64 %8, 1
  store i64 %9, ptr %7, align 8, !tbaa !12
  %10 = getelementptr inbounds [100 x i32], ptr %0, i64 0, i64 %8
  store i32 %1, ptr %10, align 4, !tbaa !13
  %11 = getelementptr inbounds i8, ptr %0, i64 408
  store i32 0, ptr %11, align 8, !tbaa !5
  %12 = getelementptr inbounds i8, ptr %0, i64 432
  %13 = load ptr, ptr %12, align 8, !tbaa !14
  %.not = icmp eq ptr %13, null
  br i1 %.not, label %15, label %14

14:                                               ; preds = %6
  tail call void %13(ptr noundef nonnull @__func__.b_push_back, ptr noundef nonnull %0) #1
  br label %15

15:                                               ; preds = %6, %14, %4
  %.0 = xor i1 %3, true
  ret i1 %.0
}

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 = { 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, !10, i64 408}
!6 = !{!"buffer", !7, i64 0, !9, i64 400, !10, i64 408, !11, i64 416, !11, i64 424, !11, i64 432}
!7 = !{!"omnipotent char", !8, i64 0}
!8 = !{!"Simple C/C++ TBAA"}
!9 = !{!"long", !7, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!"any pointer", !7, i64 0}
!12 = !{!6, !9, i64 400}
!13 = !{!10, !10, i64 0}
!14 = !{!6, !11, i64 432}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GlobalOptPass,InstCombinePass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass