; 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 }
%struct.buffer_fval = type { ptr, ptr, ptr, ptr, ptr, ptr }

@__func__.b_contains = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.start.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nocallback nofree nosync nounwind willreturn memory(argmem: readwrite)
declare void @llvm.lifetime.end.p0(i64 immarg, ptr nocapture) #0

; Function Attrs: nounwind uwtable
define dso_local zeroext i1 @b_contains(ptr noundef %0, i32 noundef %1) #1 {
  %3 = alloca i1, align 1
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i8, align 1
  %7 = alloca i64, align 8
  %8 = alloca i32, align 4
  store ptr %0, ptr %4, align 8, !tbaa !5
  store i32 %1, ptr %5, align 4, !tbaa !9
  %9 = load ptr, ptr %4, align 8, !tbaa !5
  %10 = getelementptr inbounds %struct.buffer, ptr %9, i32 0, i32 3
  %11 = load ptr, ptr %10, align 8, !tbaa !11
  %12 = icmp eq ptr %11, null
  br i1 %12, label %20, label %13

13:                                               ; preds = %2
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = getelementptr inbounds %struct.buffer, ptr %14, i32 0, i32 3
  %16 = load ptr, ptr %15, align 8, !tbaa !11
  %17 = getelementptr inbounds %struct.buffer_fval, ptr %16, i32 0, i32 0
  %18 = load ptr, ptr %17, align 8, !tbaa !14
  %19 = icmp eq ptr %18, null
  br i1 %19, label %20, label %23

20:                                               ; preds = %13, %2
  %21 = load ptr, ptr %4, align 8, !tbaa !5
  %22 = getelementptr inbounds %struct.buffer, ptr %21, i32 0, i32 2
  store i32 11, ptr %22, align 8, !tbaa !16
  store i1 false, ptr %3, align 1
  br label %66

23:                                               ; preds = %13
  %24 = load ptr, ptr %4, align 8, !tbaa !5
  %25 = getelementptr inbounds %struct.buffer, ptr %24, i32 0, i32 2
  store i32 0, ptr %25, align 8, !tbaa !16
  call void @llvm.lifetime.start.p0(i64 1, ptr %6) #2
  store i8 0, ptr %6, align 1, !tbaa !17
  call void @llvm.lifetime.start.p0(i64 8, ptr %7) #2
  store i64 0, ptr %7, align 8, !tbaa !19
  br label %26

26:                                               ; preds = %49, %23
  %27 = load i64, ptr %7, align 8, !tbaa !19
  %28 = load ptr, ptr %4, align 8, !tbaa !5
  %29 = getelementptr inbounds %struct.buffer, ptr %28, i32 0, i32 1
  %30 = load i64, ptr %29, align 8, !tbaa !20
  %31 = icmp ult i64 %27, %30
  br i1 %31, label %33, label %32

32:                                               ; preds = %26
  store i32 2, ptr %8, align 4
  br label %52

33:                                               ; preds = %26
  %34 = load ptr, ptr %4, align 8, !tbaa !5
  %35 = getelementptr inbounds %struct.buffer, ptr %34, i32 0, i32 3
  %36 = load ptr, ptr %35, align 8, !tbaa !11
  %37 = getelementptr inbounds %struct.buffer_fval, ptr %36, i32 0, i32 0
  %38 = load ptr, ptr %37, align 8, !tbaa !14
  %39 = load ptr, ptr %4, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.buffer, ptr %39, i32 0, i32 0
  %41 = load i64, ptr %7, align 8, !tbaa !19
  %42 = getelementptr inbounds [100 x i32], ptr %40, i64 0, i64 %41
  %43 = load i32, ptr %42, align 4, !tbaa !9
  %44 = load i32, ptr %5, align 4, !tbaa !9
  %45 = call i32 %38(i32 noundef %43, i32 noundef %44)
  %46 = icmp eq i32 0, %45
  br i1 %46, label %47, label %48

47:                                               ; preds = %33
  store i8 1, ptr %6, align 1, !tbaa !17
  store i32 2, ptr %8, align 4
  br label %52

48:                                               ; preds = %33
  br label %49

49:                                               ; preds = %48
  %50 = load i64, ptr %7, align 8, !tbaa !19
  %51 = add i64 %50, 1
  store i64 %51, ptr %7, align 8, !tbaa !19
  br label %26, !llvm.loop !21

52:                                               ; preds = %47, %32
  call void @llvm.lifetime.end.p0(i64 8, ptr %7) #2
  br label %53

53:                                               ; preds = %52
  %54 = load ptr, ptr %4, align 8, !tbaa !5
  %55 = getelementptr inbounds %struct.buffer, ptr %54, i32 0, i32 5
  %56 = load ptr, ptr %55, align 8, !tbaa !23
  %57 = icmp ne ptr %56, null
  br i1 %57, label %58, label %63

58:                                               ; preds = %53
  %59 = load ptr, ptr %4, align 8, !tbaa !5
  %60 = getelementptr inbounds %struct.buffer, ptr %59, i32 0, i32 5
  %61 = load ptr, ptr %60, align 8, !tbaa !23
  %62 = load ptr, ptr %4, align 8, !tbaa !5
  call void %61(ptr noundef @__func__.b_contains, ptr noundef %62)
  br label %63

63:                                               ; preds = %58, %53
  %64 = load i8, ptr %6, align 1, !tbaa !17, !range !24, !noundef !25
  %65 = trunc i8 %64 to i1
  store i1 %65, ptr %3, align 1
  store i32 1, ptr %8, align 4
  call void @llvm.lifetime.end.p0(i64 1, ptr %6) #2
  br label %66

66:                                               ; preds = %63, %20
  %67 = load i1, ptr %3, align 1
  ret i1 %67
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { 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 #2 = { 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, !10, i64 0}
!10 = !{!"int", !7, i64 0}
!11 = !{!12, !6, i64 416}
!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 = !{!15, !6, i64 0}
!15 = !{!"buffer_fval", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40}
!16 = !{!12, !10, i64 408}
!17 = !{!18, !18, i64 0}
!18 = !{!"_Bool", !7, i64 0}
!19 = !{!13, !13, i64 0}
!20 = !{!12, !13, i64 400}
!21 = distinct !{!21, !22}
!22 = !{!"llvm.loop.mustprogress"}
!23 = !{!12, !6, i64 432}
!24 = !{i8 0, i8 2}
!25 = !{}


; 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_contains = external hidden unnamed_addr constant [11 x i8], align 1

; Function Attrs: nounwind uwtable
define dso_local noundef zeroext i1 @b_contains(ptr noundef %0, i32 noundef %1) local_unnamed_addr #0 {
  %3 = getelementptr inbounds i8, ptr %0, i64 416
  %4 = load ptr, ptr %3, align 8, !tbaa !5
  %5 = icmp eq ptr %4, null
  br i1 %5, label %9, label %6

6:                                                ; preds = %2
  %7 = load ptr, ptr %4, align 8, !tbaa !12
  %8 = icmp eq ptr %7, null
  br i1 %8, label %9, label %11

9:                                                ; preds = %6, %2
  %10 = getelementptr inbounds i8, ptr %0, i64 408
  store i32 11, ptr %10, align 8, !tbaa !14
  br label %28

11:                                               ; preds = %6
  %12 = getelementptr inbounds i8, ptr %0, i64 408
  store i32 0, ptr %12, align 8, !tbaa !14
  %13 = getelementptr inbounds i8, ptr %0, i64 400
  %14 = load i64, ptr %13, align 8, !tbaa !15
  %.not22 = icmp eq i64 %14, 0
  br i1 %.not22, label %._crit_edge, label %.lr.ph

15:                                               ; preds = %.lr.ph
  %16 = add nuw i64 %.019, 1
  %17 = load i64, ptr %13, align 8, !tbaa !15
  %18 = icmp ult i64 %16, %17
  br i1 %18, label %.lr.ph, label %._crit_edge, !llvm.loop !16

.lr.ph:                                           ; preds = %11, %15
  %.019 = phi i64 [ %16, %15 ], [ 0, %11 ]
  %19 = load ptr, ptr %3, align 8, !tbaa !5
  %20 = load ptr, ptr %19, align 8, !tbaa !12
  %21 = getelementptr inbounds [100 x i32], ptr %0, i64 0, i64 %.019
  %22 = load i32, ptr %21, align 4, !tbaa !18
  %23 = tail call i32 %20(i32 noundef %22, i32 noundef %1) #1
  %24 = icmp eq i32 %23, 0
  br i1 %24, label %._crit_edge, label %15

._crit_edge:                                      ; preds = %15, %.lr.ph, %11
  %.lcssa = phi i1 [ false, %11 ], [ %24, %.lr.ph ], [ %24, %15 ]
  %25 = getelementptr inbounds i8, ptr %0, i64 432
  %26 = load ptr, ptr %25, align 8, !tbaa !19
  %.not = icmp eq ptr %26, null
  br i1 %.not, label %28, label %27

27:                                               ; preds = %._crit_edge
  tail call void %26(ptr noundef nonnull @__func__.b_contains, ptr noundef nonnull %0) #1
  br label %28

28:                                               ; preds = %._crit_edge, %27, %9
  %.016 = phi i1 [ false, %9 ], [ %.lcssa, %27 ], [ %.lcssa, %._crit_edge ]
  ret i1 %.016
}

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, !11, i64 416}
!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 = !{!13, !11, i64 0}
!13 = !{!"buffer_fval", !11, i64 0, !11, i64 8, !11, i64 16, !11, i64 24, !11, i64 32, !11, i64 40}
!14 = !{!6, !10, i64 408}
!15 = !{!6, !9, i64 400}
!16 = distinct !{!16, !17}
!17 = !{!"llvm.loop.mustprogress"}
!18 = !{!10, !10, i64 0}
!19 = !{!6, !11, i64 432}


; Effective O3 passes: CorrelatedValuePropagationPass,EarlyCSEPass,GVNPass,GlobalOptPass,IPSCCPPass,InferFunctionAttrsPass,InstCombinePass,InstSimplifyPass,JumpThreadingPass,LCSSAPass,LICMPass,LoopRotatePass,LoopSimplifyPass,LoopUnrollPass,PostOrderFunctionAttrsPass,SROAPass,SimplifyCFGPass,TailCallElimPass