; 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 }

; 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: nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #1

; Function Attrs: nounwind uwtable
declare dso_local ptr @b_new_custom(ptr noundef, ptr noundef, ptr noundef) #2

; Function Attrs: nounwind uwtable
define dso_local ptr @b_copy_of(ptr noundef %0) #2 {
  %2 = alloca ptr, align 8
  %3 = alloca ptr, align 8
  %4 = alloca ptr, align 8
  %5 = alloca i32, align 4
  %6 = alloca i64, align 8
  store ptr %0, ptr %3, align 8, !tbaa !5
  call void @llvm.lifetime.start.p0(i64 8, ptr %4) #3
  %7 = load ptr, ptr %3, align 8, !tbaa !5
  %8 = getelementptr inbounds %struct.buffer, ptr %7, i32 0, i32 3
  %9 = load ptr, ptr %8, align 8, !tbaa !9
  %10 = load ptr, ptr %3, align 8, !tbaa !5
  %11 = getelementptr inbounds %struct.buffer, ptr %10, i32 0, i32 4
  %12 = load ptr, ptr %11, align 8, !tbaa !13
  %13 = call ptr @b_new_custom(ptr noundef %9, ptr noundef %12, ptr noundef null)
  store ptr %13, ptr %4, align 8, !tbaa !5
  %14 = load ptr, ptr %4, align 8, !tbaa !5
  %15 = icmp ne ptr %14, null
  br i1 %15, label %19, label %16

16:                                               ; preds = %1
  %17 = load ptr, ptr %3, align 8, !tbaa !5
  %18 = getelementptr inbounds %struct.buffer, ptr %17, i32 0, i32 2
  store i32 1, ptr %18, align 8, !tbaa !14
  store ptr null, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %84

19:                                               ; preds = %1
  %20 = load ptr, ptr %3, align 8, !tbaa !5
  %21 = getelementptr inbounds %struct.buffer, ptr %20, i32 0, i32 5
  %22 = load ptr, ptr %21, align 8, !tbaa !15
  %23 = load ptr, ptr %4, align 8, !tbaa !5
  %24 = getelementptr inbounds %struct.buffer, ptr %23, i32 0, i32 5
  store ptr %22, ptr %24, align 8, !tbaa !15
  %25 = load ptr, ptr %3, align 8, !tbaa !5
  %26 = getelementptr inbounds %struct.buffer, ptr %25, i32 0, i32 3
  %27 = load ptr, ptr %26, align 8, !tbaa !9
  %28 = icmp ne ptr %27, null
  br i1 %28, label %29, label %64

29:                                               ; preds = %19
  %30 = load ptr, ptr %3, align 8, !tbaa !5
  %31 = getelementptr inbounds %struct.buffer, ptr %30, i32 0, i32 3
  %32 = load ptr, ptr %31, align 8, !tbaa !9
  %33 = getelementptr inbounds %struct.buffer_fval, ptr %32, i32 0, i32 1
  %34 = load ptr, ptr %33, align 8, !tbaa !16
  %35 = icmp ne ptr %34, null
  br i1 %35, label %36, label %64

36:                                               ; preds = %29
  call void @llvm.lifetime.start.p0(i64 8, ptr %6) #3
  store i64 0, ptr %6, align 8, !tbaa !18
  br label %37

37:                                               ; preds = %60, %36
  %38 = load i64, ptr %6, align 8, !tbaa !18
  %39 = load ptr, ptr %3, align 8, !tbaa !5
  %40 = getelementptr inbounds %struct.buffer, ptr %39, i32 0, i32 1
  %41 = load i64, ptr %40, align 8, !tbaa !19
  %42 = icmp ult i64 %38, %41
  br i1 %42, label %44, label %43

43:                                               ; preds = %37
  store i32 2, ptr %5, align 4
  call void @llvm.lifetime.end.p0(i64 8, ptr %6) #3
  br label %63

44:                                               ; preds = %37
  %45 = load ptr, ptr %3, align 8, !tbaa !5
  %46 = getelementptr inbounds %struct.buffer, ptr %45, i32 0, i32 3
  %47 = load ptr, ptr %46, align 8, !tbaa !9
  %48 = getelementptr inbounds %struct.buffer_fval, ptr %47, i32 0, i32 1
  %49 = load ptr, ptr %48, align 8, !tbaa !16
  %50 = load ptr, ptr %3, align 8, !tbaa !5
  %51 = getelementptr inbounds %struct.buffer, ptr %50, i32 0, i32 0
  %52 = load i64, ptr %6, align 8, !tbaa !18
  %53 = getelementptr inbounds [100 x i32], ptr %51, i64 0, i64 %52
  %54 = load i32, ptr %53, align 4, !tbaa !20
  %55 = call i32 %49(i32 noundef %54)
  %56 = load ptr, ptr %4, align 8, !tbaa !5
  %57 = getelementptr inbounds %struct.buffer, ptr %56, i32 0, i32 0
  %58 = load i64, ptr %6, align 8, !tbaa !18
  %59 = getelementptr inbounds [100 x i32], ptr %57, i64 0, i64 %58
  store i32 %55, ptr %59, align 4, !tbaa !20
  br label %60

60:                                               ; preds = %44
  %61 = load i64, ptr %6, align 8, !tbaa !18
  %62 = add i64 %61, 1
  store i64 %62, ptr %6, align 8, !tbaa !18
  br label %37, !llvm.loop !21

63:                                               ; preds = %43
  br label %75

64:                                               ; preds = %29, %19
  %65 = load ptr, ptr %4, align 8, !tbaa !5
  %66 = getelementptr inbounds %struct.buffer, ptr %65, i32 0, i32 0
  %67 = getelementptr inbounds [100 x i32], ptr %66, i64 0, i64 0
  %68 = load ptr, ptr %3, align 8, !tbaa !5
  %69 = getelementptr inbounds %struct.buffer, ptr %68, i32 0, i32 0
  %70 = getelementptr inbounds [100 x i32], ptr %69, i64 0, i64 0
  %71 = load ptr, ptr %3, align 8, !tbaa !5
  %72 = getelementptr inbounds %struct.buffer, ptr %71, i32 0, i32 1
  %73 = load i64, ptr %72, align 8, !tbaa !19
  %74 = mul i64 4, %73
  call void @llvm.memcpy.p0.p0.i64(ptr align 8 %67, ptr align 8 %70, i64 %74, i1 false)
  br label %75

75:                                               ; preds = %64, %63
  %76 = load ptr, ptr %3, align 8, !tbaa !5
  %77 = getelementptr inbounds %struct.buffer, ptr %76, i32 0, i32 1
  %78 = load i64, ptr %77, align 8, !tbaa !19
  %79 = load ptr, ptr %4, align 8, !tbaa !5
  %80 = getelementptr inbounds %struct.buffer, ptr %79, i32 0, i32 1
  store i64 %78, ptr %80, align 8, !tbaa !19
  %81 = load ptr, ptr %3, align 8, !tbaa !5
  %82 = getelementptr inbounds %struct.buffer, ptr %81, i32 0, i32 2
  store i32 0, ptr %82, align 8, !tbaa !14
  %83 = load ptr, ptr %4, align 8, !tbaa !5
  store ptr %83, ptr %2, align 8
  store i32 1, ptr %5, align 4
  br label %84

84:                                               ; preds = %75, %16
  call void @llvm.lifetime.end.p0(i64 8, ptr %4) #3
  %85 = load ptr, ptr %2, align 8
  ret ptr %85
}

attributes #0 = { nocallback nofree nosync nounwind willreturn memory(argmem: readwrite) }
attributes #1 = { nocallback nofree nounwind willreturn memory(argmem: readwrite) }
attributes #2 = { 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 #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, !6, i64 416}
!10 = !{!"buffer", !7, i64 0, !11, i64 400, !12, i64 408, !6, i64 416, !6, i64 424, !6, i64 432}
!11 = !{!"long", !7, i64 0}
!12 = !{!"int", !7, i64 0}
!13 = !{!10, !6, i64 424}
!14 = !{!10, !12, i64 408}
!15 = !{!10, !6, i64 432}
!16 = !{!17, !6, i64 8}
!17 = !{!"buffer_fval", !6, i64 0, !6, i64 8, !6, i64 16, !6, i64 24, !6, i64 32, !6, i64 40}
!18 = !{!11, !11, i64 0}
!19 = !{!10, !11, i64 400}
!20 = !{!12, !12, i64 0}
!21 = distinct !{!21, !22}
!22 = !{!"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"

; Function Attrs: mustprogress nocallback nofree nounwind willreturn memory(argmem: readwrite)
declare void @llvm.memcpy.p0.p0.i64(ptr noalias nocapture writeonly, ptr noalias nocapture readonly, i64, i1 immarg) #0

; Function Attrs: nounwind uwtable
declare dso_local ptr @b_new_custom(ptr noundef, ptr noundef, ptr noundef) local_unnamed_addr #1

; Function Attrs: nounwind uwtable
define dso_local ptr @b_copy_of(ptr nocapture noundef %0) local_unnamed_addr #1 {
  %2 = getelementptr inbounds i8, ptr %0, i64 416
  %3 = load ptr, ptr %2, align 8, !tbaa !5
  %4 = getelementptr inbounds i8, ptr %0, i64 424
  %5 = load ptr, ptr %4, align 8, !tbaa !12
  %6 = tail call ptr @b_new_custom(ptr noundef %3, ptr noundef %5, ptr noundef null)
  %.not = icmp eq ptr %6, null
  br i1 %.not, label %33, label %7

7:                                                ; preds = %1
  %8 = getelementptr inbounds i8, ptr %0, i64 432
  %9 = load ptr, ptr %8, align 8, !tbaa !13
  %10 = getelementptr inbounds i8, ptr %6, i64 432
  store ptr %9, ptr %10, align 8, !tbaa !13
  %11 = load ptr, ptr %2, align 8, !tbaa !5
  %.not26 = icmp eq ptr %11, null
  br i1 %.not26, label %27, label %12

12:                                               ; preds = %7
  %13 = getelementptr inbounds i8, ptr %11, i64 8
  %14 = load ptr, ptr %13, align 8, !tbaa !14
  %.not27 = icmp eq ptr %14, null
  br i1 %.not27, label %27, label %.preheader

.preheader:                                       ; preds = %12
  %15 = getelementptr inbounds i8, ptr %0, i64 400
  %16 = load i64, ptr %15, align 8, !tbaa !16
  %.not29 = icmp eq i64 %16, 0
  br i1 %.not29, label %.loopexit, label %.lr.ph

.lr.ph:                                           ; preds = %.preheader, %.lr.ph
  %.028 = phi i64 [ %24, %.lr.ph ], [ 0, %.preheader ]
  %17 = load ptr, ptr %2, align 8, !tbaa !5
  %18 = getelementptr inbounds i8, ptr %17, i64 8
  %19 = load ptr, ptr %18, align 8, !tbaa !14
  %20 = getelementptr inbounds [100 x i32], ptr %0, i64 0, i64 %.028
  %21 = load i32, ptr %20, align 4, !tbaa !17
  %22 = tail call i32 %19(i32 noundef %21) #2
  %23 = getelementptr inbounds [100 x i32], ptr %6, i64 0, i64 %.028
  store i32 %22, ptr %23, align 4, !tbaa !17
  %24 = add nuw i64 %.028, 1
  %25 = load i64, ptr %15, align 8, !tbaa !16
  %26 = icmp ult i64 %24, %25
  br i1 %26, label %.lr.ph, label %.loopexit, !llvm.loop !18

27:                                               ; preds = %12, %7
  %28 = getelementptr inbounds i8, ptr %0, i64 400
  %29 = load i64, ptr %28, align 8, !tbaa !16
  %30 = shl i64 %29, 2
  tail call void @llvm.memcpy.p0.p0.i64(ptr nonnull align 8 %6, ptr nonnull align 8 %0, i64 %30, i1 false)
  %.pre = load i64, ptr %28, align 8, !tbaa !16
  br label %.loopexit

.loopexit:                                        ; preds = %.lr.ph, %.preheader, %27
  %31 = phi i64 [ 0, %.preheader ], [ %.pre, %27 ], [ %25, %.lr.ph ]
  %32 = getelementptr inbounds i8, ptr %6, i64 400
  store i64 %31, ptr %32, align 8, !tbaa !16
  br label %33

33:                                               ; preds = %1, %.loopexit
  %.sink = phi i32 [ 0, %.loopexit ], [ 1, %1 ]
  %34 = getelementptr inbounds i8, ptr %0, i64 408
  store i32 %.sink, ptr %34, align 8, !tbaa !20
  ret ptr %6
}

attributes #0 = { mustprogress nocallback nofree 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, !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 = !{!6, !11, i64 424}
!13 = !{!6, !11, i64 432}
!14 = !{!15, !11, i64 8}
!15 = !{!"buffer_fval", !11, i64 0, !11, i64 8, !11, i64 16, !11, i64 24, !11, i64 32, !11, i64 40}
!16 = !{!6, !9, i64 400}
!17 = !{!10, !10, i64 0}
!18 = distinct !{!18, !19}
!19 = !{!"llvm.loop.mustprogress"}
!20 = !{!6, !10, i64 408}


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